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I'm in need of a proficient developer to create a comprehensive computer (in a network) probe software compatible with Windows and Linux. The software should have the following key features: 1. find systems in a network and log details to a CSV file/db table. hostname, ip addresses , mac address etc along with hard disks ,os,version etc. 2. find applications installed in the computers Ideal Skills & Experience: - Prior experience in developing network monitoring and security auditing software. - Proficiency in programming languages suitable for cross-platform development. - Strong understanding of network protocols and security standards. - Experience with compliance monitoring tools and techniques would be an added advantage. Please include related s...

...showcasing the features of an ERP system. The animations will demonstrate the system's interaction with people and various business processes. Key Points: - The animations should focus on key areas of the ERP system including user interface and interaction, data processing, reporting, and integration with other systems. - Specific use cases to be covered include: - Ledger accounting - Reporting mechanisms - Data flow within the system The ideal candidate for this project should have a strong background in: - 3D animation - Experience in creating engaging and informative business animations - Understanding of ERP systems would be an advantage, though not mandatory - The ability to work within a quick turnaround time is highly desirable. This...

...Title: Windows System-Level Gaming Keyboard Emulator Developer Project Overview: We are seeking a skilled developer to create a Windows-based keyboard emulator, specifically designed for gaming. The emulator must operate at a low system level to effectively mimic keyboard inputs for gaming purposes without requiring hardware. Key Requirements: OS Compatibility: The emulator should work exclusively on Windows systems. Emulation Focus: Aimed at simulating keyboard inputs for gaming applications. Ideal Skills and Experience: Proficient in Windows application development. Expert in low-level programming, specifically in system-level assembly language. Knowledgeable in gaming input emulation and keyboard input simulation. Experience in backend applications is b...

I'm looking for an experienced web developer to create a comprehensive IELTS Teaching Management System in PHP. The system will be utilized by students, teachers, and administrators. Key Features: - Student Management: The system should provide tools for student registration, tracking student progress, and managing student profiles. - Lesson Scheduling: Users should be able to schedule lessons, view lesson details, and manage their availability. - Progress Tracking: The system must include features for tracking student progress, including test scores, attendance, and performance analysis. - Payment Gateway: Integration with a secure payment gateway to facilitate online transactions for course fees. Ideal Skills: - Strong PHP programming skills and experti...

As the key motivator, I'm eager to freshen up ou...used (colors, size, etc.). * The design should be delivered as soon as possible, highlighting the urgency of this project. Skills and Experience: I'm seeking a professional who has: * Demonstrated experience in graphic design and branding. * An understanding of modern design techniques while respecting classic motifs. * Ability to present visually compelling concepts that effectively communicate our brand personality. * An artistically innovative mind, with an eye for luxury design. We need the logo to adapt to the raised leather marking. If you are a tenacious designer with a flair for creating visually appealing logos, I'd love to see your portfolio and your suggestions! We leave attached an idea that we ...

i have Pojo class where it is picking property value from api response as integer in the Pojo Class: @JsonProperty("intensity") private Integer intensity; public Integer getC...we add and this already defined in java if(checkVariant is true) then consider it string and parse it what i have to do to fix my code based on that condition so i can parse the string value this way: updateProperties("color", ((), )); how i can solve this issue so in case checkVariant is true then parse it as string otherwise leave it as it is now which integer. can i do that only on parser or i need to change the Pojo class as well (colorWsDTO) who can do it in summery and short let em know , thanks please consider error handling in this case

...company goals. 5. Virtual Assistant Retreat: Enjoy all-expenses-paid gatherings to meet and connect with colleagues when our team grows. 6. Flexible Vacation: Take time off when you need it, just inform us in advance. 7. Paid Holidays: Enjoy ten paid time-offs for recognized US, PH & IN public holidays. Simply notify the team in advance when you plan to use them. 8. Paid Sick Leave: Start accruing 0.5 day of sick leave every month from your first day, usable after 6 months of employment. 9. Opportunities for Advancement and Bonuses: Receive raises and bonuses for excellent performance, with support for your personal and professional growth goals....

I'm in need of a web-based job card system that will allow the creation and editing of digital job cards. There is also a requirement for quotes, parts / inventory, archived jobs, and customer management. Both employees and managers will need access to the system, with an admin login section for authorization of completed job cards. We would like the system to export completed jobs to CSV file for automated invoice generation in Quickbooks Online. We will also require the system to import the customer database from Quickbooks in CSV format. Key Functionalities: - Creation and Editing of Jobs - Ability to use system on-site / remotely through the use of iOS or Android web browsing. Some - Ability to select a simple job status from a drop-down comb...

I am currently dealing with an issue on my AlmaLinux Development system that is preventing it from booting. The system is displaying an error message upon boot-up. This issue has arisen following some recent configuration changes. The ideal candidate for this job should be well-versed in AlmaLinux system administration and should have experience with troubleshooting boot issues. It would be great if you have a good understanding of system configuration and how it can impact booting. Your task would be to solve this booting issue and ensure the system is up and running smoothly. Key Skills: - AlmaLinux system administration - Troubleshooting boot issues - System configuration expertise This is an urgent job, and I need a professional who...

I'm looking for an adept programmer who can create a system that automates the process of filling online forms with data. The ideal candidate should have: - Extensive experience in Automation programming - Strong knowledge of form-based online platforms - Proficiency in cross-verifying data with existing databases Key tasks: - Design and set up an automation system to accurately fill online forms with data. - Implement a cross-verification function that checks the data to be filled against existing data to ensure its accuracy. My expectations for this project are a system that will accurately and automatically populate online forms, saving valuable time and reducing potential errors caused by manual data entry. Your ability to add a cross-verificatio...

I'm in need of a skilled social media expert who can manage our Twitter account for promoting our crypto token. The primary aim of this campaign is to enhance the community engagement and awareness of the crypto token. Key Responsibilities: - Develop engaging and professio...the crypto space and the target audience. - Proven track record in growing followers organically and increasing engagement. - Proficiency in maintaining a professional tone of voice in social media content. Please bid only if you can meet the mentioned requirements. We can easily detect bots that leave comments or likes, so please if you are planning on using bots, do not bid. Please explain clearly how much you charge and how you want payment to work. This will be a very long term project for ...

I am in need of a skilled individual who can create a robust and highly functional ERP system for me. This system should encompass: - Inventory Management - Sales and Purchase Management - Human Resources Management In addition to the above, I also require the system to handle Manufacturing Management, with a focus on: - Production planning and scheduling - Inventory control - Quality assurance The ideal candidate for this project will have extensive experience in system development and a comprehensive understanding of ERP systems. You should be familiar with all the mentioned functionalities and able to deliver high-quality results. Kindly note that im looking for some in Riyadh KSA

I need a competent writer with a strong understanding of computer science to help me research and write content for a web-based system. Key Requirements: - Proficiency in various areas of computer science, particularly in Artificial Intelligence, Data Science, or Cybersecurity. - Ability to thoroughly research and cover a range of topics within computer science, such as Machine Learning, Algorithms, or Network Security. - Excellent writing skills and the ability to articulate complex technical concepts in an engaging and easy-to-understand manner.

Develop or sketches to run dual processors in circuit as described in schematic , The light, called Eos 24, has three use cases or modes: 1. SW1 is closed: The neopixel runs constantly until SW1 moved to open. 2. SW1 is open: The neopixel runs when the PIR is triggered until interval4 is elapsed. When SW1 is open and interval4 is elapsed Eos 24 is in standby mode and the Neopixel is dark. 3. SW1 is open and interval4 is elapsed. This is standby mode and the Neopixel is dark until the PIR is triggered again.

I'm in need of a talented 3D animator to help create a character animation. The primary purpose of this animation is a personal project (NON COMMERICAL) as a birthday gift for my daughter I wanted to have a episode from her favorite cartoon (bluey)in vr I believe its about 7minutes worth of animation. The episodes name is " Omelette" episode 5 season 3 I have the video to send to you for reference. Technically, it's one mesh and skeleton ( They only differ in size and color) for 4 characters total, but I leave it for you to decide. I have the base mesh and a skeleton(can be changed if it is easier for you to work with) I do not require it to be rendered just the raw file with format that can be uploaded to blender or unreal engine to be timed and place ...

...The comments list shows icons for each option you have selected, The idea is that everything is the same but with a different appearance. svg templates for the reactions and seasons of the year and colors and the functionality of selecting each option. The system must run on WordPress and work on it until it is 100% functional. My website is made with Wordpress + Elementor + acf STEP 2: After having the complete system in its entirety, you must import comments that are in a json, in said JSON are the perfumes + their comments and leave it linked and when you add manual comments to each entry, add them normally and add them without problem. The idea is to import all the perfumes + their comments. IT IS IN A JSON WHICH I ALREADY HAVE UPLOADED TO MY SERVER. IT WO...

...manager system from Google Script (Javascript) to Office365. The primary purpose of this migration is to rebuild the system on a completely different platform. Key Requirements: - Proficient in Google Script (Javascript) - Familiar with Office365 platform - Previous experience with voicemail manager systems is a plus The ideal candidate for this project should have a strong background in both Google Script and Office365, with a particular focus on migration projects. Since the goal is to enhance the system's reliability, it is important that the freelancer has a good understanding of the intricacies of voicemail manager systems. The project's success will depend on the freelancer's ability to effectively transfer the existing system's functi...

...- Possibility to leave reviews and ratings - Sign up for subscriptions - Integration with Bigbluebutton tool - Payment options through Stripe Connect, Google and Apple Pay, among other methods - Calendar synchronization with Google and Apple. For Tutors (as a minimum): - Functionality to create and manage profiles - Ability to set availability and schedule - Receive tutoring session bookings - Opt in for subscription for repeated lessons. For Admin (as minimum): -Dashboard -payout Ideal freelancers for this project will be proficient in not only the development of digital marketplaces but also in integrating third-party tools such as Bigbluebutton, Stripe Connect, and Google/Apple API's for payment and comllex calendaring functions & integration, & GeoGebr...

I'm seeking a skilled individual to assist with...individual to assist with a multi-machine power system dynamics analysis and control. The primary goal of this project is to optimize power flow efficiency. Key Requirements: - Proficiency in power systems dynamics and control analysis - Experience with multi-machine systems - Ability to optimize for voltage levels Your responsibilities will include: - Conducting power system dynamics analysis - Implementing control measures to optimize power flow efficiency - Focusing on voltage levels optimization Ideal candidates should have a strong background in power systems, and be able to work on a multi-machine system. This project will require a good understanding of power flow and voltage levels in orde...

Overview: This application will enable Shopify store owners to collect and display customer reviews. However, only customers who have made a purchase will be able to leave a review. You can use the product reviews sample app from Shopify Github if you want, it is not a problem for me. Project Requirements: User Authentication: • Only customers who have made a purchase should be able to leave a review. • There should be no public option for writing a review on the store’s frontend. Review Collection: • After a purchase, customers should receive an invitation via email to write a review. Review Display: • Reviews submitted by customers should be displayed on the respective product page of the Shopify store. Webservice Integration:

I'm seeking a seasoned freelancer to devise a Derby car timer using Arduino Uno. The expected outcome will be a two-lane track device, with the ability to dict...for indicating 1st and 2nd place finishes. Ideal Skills and Qualifications: - Working knowledge of Arduino programming language. - In-depth understanding of microcontroller-based systems. - Hands-on experience with infrared sensor technology. - Ability to integrate multiple components into one cohesive, functioning system. - Practical knowledge of LED Display systems, specifically the 7-Segment LED HT16K33 Backpack. - Comfortable with crafting solutions for race-based project requirements. In bidding, please showcase your experience with Arduino Uno projects, and if possible, share examples of similar timing s...

...reader keeps the password for the RFID cards as a hard-coded constant. 3) The reader has an 4-byte reader ID stored in its EEPROM memory. 4) The RGB LED on the edge of the main board, whose location matches the hole in the antenna. RGB LEDs are connected to the PWM pins of the controller. 5) A waterproof (if possible) speaker must be on the opposite edge of the main board, closer to one side to leave space for wires. The speaker must be connected to a PWM pin of the microcontroller. 6) RS485 interface, half-duplex. 6a) The RS485 command should trigger an RGB LED sequence and the speaker sound effect. The command contains a reader ID. The reader accepts commands only if the reader ID matches. 6b) When an RFID card is applied, the reader reads a password-protected memory block and...

Validation of Sample implementation of One Loan product (Business Loan) created by Transdigital team. - Help Transdigital team in End to end testing of the system after product configuration - Creation of Roles and Users - Generation of Reports - Conducting on the job training for Trasdigital Business Analysts

I'm looking for a skilled developer to help me customize my current PHP SMS system. It's primarily used for sending notifications. I have the script and has been working with twilio, however all of a sudden it stopped working due to twilio changes I need assistance in modifying the script

I'm in need of a professional website d...of a professional website designer to help create an e-commerce website for my business. The website should include key features such as: - Product pages: individual pages for each of my products, showcasing pictures, descriptions and pricing. - Shopping cart: an easy-to-use shopping cart for customers to make purchases directly from the website. - Customer reviews: a feature for customers to leave and view reviews for each product. In terms of payment methods, I'd like the website to support Credit Card, PayPal, and UPI transactions. Ideal skills and experience for this job would include a demonstrated proficiency in e-commerce website development, understanding of payment gateway integration, and experience in designing user-...

I'm looking for a skilled web developer to create an engaging e-commerce website that possesses the following features: - Product Search and Filtering: A strong, user-friendly search and filter system is crucial to help customers swiftly locate products of their interest. - Customer Reviews: A platform for customers to leave reviews on our products. This feedback is vital for our business growth. - Shopping Cart: An easy-to-use shopping cart feature for customer convenience. For the payment options, we'll discuss this aspect later as I'm still considering the best choices for my customers. Hence, the web developer should have the ability to incorporate different payment options. Ideal candidates should have solid experience in e-commerce platforms, great att...

I require an advanced database to streamline church operations. It must include: - Member management: This involves recording personal details of each member, tracking attendance, and allocating to the right departments. Each member's record should also include household and family details, with specific fields for spouse and child...fields like gender, age, membership status, notes, and whether they serve as workers or ministers. - Financial management: The platform should have capabilities for recording and tracking financial contributions. Ideal freelancers will have experience in building similar database systems, with a keen understanding of how to translate our church's requirements into a user-friendly, efficient system. Knowledge of member management systems wi...

...featuring a comprehensive catalogue. Features Required: - Destination descriptions: Detailed and engaging descriptions of various travel destinations. - Tour packages: Information on the different tour packages that we offer. - Accommodation options: Clear, concise details about various accommodation choices available within each travel package. - Customer review: A section where customers can leave feedback and rate our services. - Direct communication: Options for the customers to get in touch with me directly via a contact form, live chat, phone number, Whatsapp and email. Ideal skills: - Proven web development experience - Excellent communication skills - Attention to detail - Experience in developing eCommerce or similar platforms This is an exciting opportunity for...

1. Create a customer registration system 2. Publish ads with a online payment gateway 3. Call button for mobile phone when scrolling needs to call the registered phone number for customer 4. Automatic email reminder for ad expiry and if there is no payment ad has to be removed automatically.

I'm seeking an experienced C++ developer to create a simulation study focused on analyzing system performance. The freelancer should be proficient in: - C++ programming - Building simulation models - System performance analysis The end goal is to have a robust, accurate simulation that can analyze the performance of various systems. Prior experience in similar projects would be highly advantageous.

...price; unemployed, and have cancer with bills backing up, $10 possible? Please note $10 is the max total that I can handle for this (doing hourly reduces % fee). Will leave a Glowing paragraph of feedback 5 stars : - ) My funds are low but will pay quick and leave 5 stars. Please give your best possible for your bid ? (something reasonable?) Please note there is hope we can mutually complete this task; we can leave each other nice comments and 5 stars for each? Look at feedback on my profile, feedback I left for many others. Here is the project: SINCERELY WOULD BE NICE TO MEET YOU PLEASE ANY THOUGHTS ? Please note project is due in two hours as this projects deadline, as this is needed if we can get some done - then we can talk about next steps a...

I need a robust class management system that caters to the needs of a large-scale educational institution. Our primary users will be students, teachers, administrators, and parents. Key Features: - Attendance Tracking: The system should allow teachers to mark and track the attendance of students. - Grade Management: An intuitive grade management system that enables teachers to input and calculate grades effectively. - Messaging System: A communication platform that facilitates seamless interaction between all stakeholders (students, teachers, administrators, and parents). By Whatsapp - Schedule Change Option: The system should have a feature that allows for the smooth management of schedule changes. User Base: - The system will cater to over 100 ...

...price; unemployed, and have cancer with bills backing up, $10 possible? Please note $10 is the max total that I can handle for this (doing hourly reduces % fee). Will leave a Glowing paragraph of feedback 5 stars : - ) My funds are low but will pay quick and leave 5 stars. Please give your best possible for your bid ? (something reasonable?) Please note there is hope we can mutually complete this task; we can leave each other nice comments and 5 stars for each? Look at feedback on my profile, feedback I left for many others. Here is the project: SINCERELY WOULD BE NICE TO MEET YOU PLEASE ANY THOUGHTS ? Please note project is due in two hours as this projects deadline, as this is needed if we can get some done - then we can talk about next steps a...

I need a robust and efficient platform that will help in managing incubator operations effectively. This online portal shoule cater not only for startups but also for incubator staff, investors, and our research partners. The following features are essential: - User management: This will facilitate management of all users in the system including startups, staff, investors, and research partners. - Project tracking: It should enable us to track and monitor all incubator projects. - Resource allocation: Feature to allocate and monitor resources for all included startups is crucial. - Recruitment and selection of businesses: Swipe in potential incubatees, and streamline their onboarding. - Performance tracking: Monitor and assess the development of startups enlisted. - M...

Hi, I am looking for a developer to maintain, make upgrades and fix bugs on my current website and booking system. The system has been done in SQL written in C# by my old developer. He has had a change of career and can no longer work on things but is happy to do a handover to make things easier. This will be an ongoing business relationship and not a one off thing so will need someone with good communication and accurate times of completion. Thanks, Luke.

I am in need of a skilled freelancer to develop a cloud-based do...of a skilled freelancer to develop a cloud-based document management system. This system will be used within my small team, which consists of less than 10 users. Key Features: - File Storage and Organization: The system needs to allow us to securely store and categorize our text documents. - Document Indexing and Search: It should have an efficient indexing system with a powerful search capability, so we can quickly find and access the necessary files. Ideal Skills and Experience: - Proficiency in cloud-based technologies - Experience in developing document management software - Familiarity with creating systems optimized for small teams Please let me know your relevant experience and how you...

I'm seeking a proficient and experienced UI designer with superior skills in Figma, Sketch, and Adobe XD. Your task will be to design a unique, user-oriented interface for a Warehouse Management System. The project is primarily aimed at enhancing the interface with key features. Skills and Experience Required: - Proven UI design experience - Proficiency in using Figma, Sketch, and Adobe XD - Experience designing interfaces for Warehouse Management Systems (preferred, but not mandatory) - Experience using tools such as Photoshop, Sketch, Illustrator, InVision, UXPin, Quartz. - Understanding of basic front-end languages: HTML5, CSS3 Javascript. -Creative ideas with problem solving mindset. - Experience working in an agile/scrum development process. Key Features for the...

I'm seeking a talented developer to construct a robust DDEX music distribution system. This platform will serve as a key component of my radio station's operations. We're looking for a developer with experience on building a DDEX distribution system where the user can upload the tracks and albums, images to distribute on different dsp sites like Spotify, Beatport, Apple Music, etc and receive music from our industry partners. With functionalities where the user can upload any format of track file like mp3, wav, flac so that it can be encoded into different formats and can be distributed to different dsp sites depending upon required formats. The administrator can upload the royalty files in different formats like xls, csv, txt. provided by dsp sites and calcul...

I'm in need of an expert to assist with the following project. - My current POS system, an Ingenico, is frequently crashing and it's impacting the smooth operation of our sales process. - I need the POS system to be downloaded on my preferred Operating System, Windows - In addition, I need you to diagnose and resolve the frequent crashing issue The ideal candidate for this project should be experienced with POS systems, have a strong understanding of Windows OS, and the ability to troubleshoot and resolve system crashes.

I'm looking for a professional who can work with me in programming and installing a POS system on Ingenico iwl250 GPRS terminals. Details: - Programming: The system requires a set of specific programming requirements such as customisable user interface, integration with existing POS software, real-time inventory management, and OS download. - Installation: The installation could be a mix of fixed and remote installations, so you must have experience with both. Additionally, the system requires security features like encryption of sensitive data, secure remote access, and user authentication. Ideal Skills: - Prior experience in programming POS systems - Proficient in customizing user interfaces - Strong background in real-time inventory management - Knowledg...

I'm looking for a freelancer with specific experience in Vegavoip. The main task will be to set up a new Vegavoip system, ensuring it's up and running smoothly. The key features that are an absolute must for this system are call forwarding and call out capabilities. Ideal Skills and Experience: - Proven track record of setting up Vegavoip systems. This is essential for the successful completion of the project. - Familiarity with configuring VoIP providers. While the main focus is on Vegavoip, additional experience with VoIP provider configuration would be an advantage. - Strong understanding of essential features such as call forwarding and call out. The successful candidate will need to ensure these features are working correctly.

I'm looking for a seasoned developer to create a desktop application focused on data management. This software will be used on the Windows operating system and must be developed using Java. The ideal candidate will have: - Extensive experience with Java and Windows development - A deep understanding of data management systems - The ability to work effectively and communicate progress regularly Please provide a clear demonstration of your skills in these areas when submitting a proposal, we are looking for the best development talents to execute this project.

I'm seeking freelancer who want me to build a responsive e-commerce website. The main objective of this website is to facilitate online sales. Key requirements: - Develop a responsive e-commerce website that allows customers to view, select and purchase products. - Implement a customer reviews feature that allows customers to leave reviews and ratings on purchased products. Content: - I will provide all the content for the website. You'll be responsible for the design and layout, ensuring that it's engaging and drives conversions. Ideal skills and experience: - 10+ years of experience in web development, with a strong portfolio of e-commerce websites. - Proficiency in e-commerce platforms and technologies, with a focus on customer reviews feature. - Strong understa...

I'm looking for a skilled developer to help me resolve some bugs in my system and provide ongoing support as needed. Ideal skills and experience include: - Strong experience in bug fixing - Proven success with database issues - Excellent knowledge of system design Expectations: - Implement bug fixes and make suitable modifications to address these issues - Provide ongoing support as needed - Communicate updates and feedback through remote access to my system I'm open to discussing the project further with qualified individuals.

I am in need of a versatile developer who can build an integrated messaging system that ties together Facebook Messenger, Slack, and Instagram. The key features of this project include: - Ability to both manually and automatically respond to the received messages. - The automatic response should apply only to text messages. Desired Skills & Experience: - Extensive experience in API integration. - Deep understanding of Facebook Messenger, Instagram and Slack platforms. - Experience in designing systems that handle both automatic and manual responses to messages. - Familiarity with algorithms to effectively auto-reply text messages.

I'm seeking experienced UML and OCL modelers to conceptualize my full system information and transcribe the model for the USE (.use) tool. Key tasks include: - Conceptualize the entire system model using UML and OCL - Transcribe the model for USE tool - Create necessary UML diagrams: Class Diagram, Use Case Diagram, Sequence Diagram Ideal skills would include expertise in UML, OCL, and system modeling. Familiarity with the USE tool is essential.

We are seeking a skilled developer or development team to create a comprehensive web crawler system. This system should scrape, structure, and update information from web pages, handle large projects, and be accessible via a powerful API. The system should offer user-friendly features for both individuals and businesses and include flexible user management for both customers and employees. Project Requirements 1. Web Crawling and Data Extraction -Develop a system capable of scraping entire websites and extracting data from each page. -The system should divide the scraped information into sections to facilitate easy reading and understanding. -For e-commerce sites, the system should identify and structure the following information: --Product...

I need to design a tracker control unit for the 137 MHz band antenna system of the ground station receiving weather information from the NOAA spacecraft on Arduino. The project must be modeled at https://projecthub.arduino.cc. Need your idea and help how to implement it.

I am in need of a skilled professional with solid experience in Electronic Payment Gateway Systems. The main purpose will be securing onl...Facilitating secure transactions primarily via credit/debit cards and bank transfers. The ideal consultant should have a proven background in: - E-commerce platforms and tools. - Cybersecurity - Managing credit/debit card transactions and bank transfers through payment gateway systems. - Setting up streamlined and hassle-free payment processes. Unfortunately, the type of transactions my system will primarily support hasn't been decided yet, so flexibility and advice in this regard will be appreciated. Experience with multiple types of transactions, including eCommerce, subscription payments, or peer-to-peer transfers will be a strong...

I'm looking for a Linux developer experienced in firewall handling and know PHP Apache seriuos developer for long term Key Tasks: Ideal Candidate: - Proficient with Linux environment - Experience in system administration - Understanding of different system tasks