Hire the best DOS specialists

Check out DOS specialists with the skills you need for your next job.
  • $62 hourly
    Experienced Software engineer in Software life cycle, design & development, Research & development, Embedded systems, Real-time-applications, Network protocols & socket programming (telecom), Object-oriented design & writing components, OS internals & Kernel modules, Modular/procedural approach, OOAD/OOP, IPD- CMM process, Project & product lifecycle, Image processing, video processing & 3D under Robotics, Embedded systems & Real-time-applications under Semiconductor ATE, Telecom & networking domains IT skills Operating Systems: Linux/Unix, VxWorks, RT-Linux, QNX, FreeRTOS. Programming: C, C++, core Java, Assembler, C# Scripting : Tcl/TK, Python, Ruby Tools & SW packages: Wind river Workbench, Simics, Rational Rose ClearCase, UML, Subversion, Tornado IDE, JDBC, CVS, lint, Bugzilla, Valgrind, Callgrind, Kachegrind, slick edit, Source Insight, Coverity, MS-Office, Visio, MS- Project, Eclipse, PCANView, Grafana, OpenTSDB, Picoscope, Octave Others: TCP/IP, CAN, fieldbus, Ethernet/IP, V-model approach, IPD-CMM level 5, Agile based iterative process.
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    Socket Programming
    TensorFlow
    Multithreaded Programming
    Real-Time Operating System
    Data Science
    XML
    Machine Learning
    Linux
    Standalone Application
    C++
    C#
    MySQL
    Python
    .NET Framework
    C
  • $33 hourly
    Hi, I developed web applications for more than 10 years using Python, PHP, JS (backend and frontend). I worked on absolutely new projects and maintained existed ones. I also worked with SQL, OOP, JSON, XML and a lot of different PHP frameworks: Django, Flask, Laravel, Zend Framework, Kohana, CodeIgniter. I'm seeking work to create awesome web applications. If you have some work for me - let's discuss how we can collaborate.
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    Front-End Development
    Laravel
    Node.js
    PHP
    Django
    Python
    Flask
    Vue.js
    React
  • $15 hourly
    I have 12 years of experience in web development. I initially started my career working on PHP. I then explored Databases like MySQL and Mongo DB. I cached things with Redis and Memcache. Pushed code with Git. Worked on plain vanilla JavaScript. After that moved to Node.js and Express.js. Acquainted with AWS, DevOps using Python, Docker, Microservice, Serverless, and Nginx web servers. Developed code in Angular and React. Presently writing a lot of JS code (client and server). Before starting freelancing, I was associated with big tech companies and developed many enterprise-level software. Please contact me if you want to know more about my competency. I am sure you will be with the right person, trust me.
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    Terraform
    API
    Laravel
    Git
    Node.js
    Web Development
    PHP
    Docker
    Amazon DynamoDB
    Kubernetes
    MongoDB
    Linux System Administration
    AWS Lambda
    Golang
    Python
  • $11 hourly
    I have over 20 experience years working in the IT industry in a number of different areas ranging from database applications, to office automation, to system wide implementations to CRM system implementations, to custom development. I have primarily worked on Upwork projects involving data extraction and formatting, but I have experience in other areas as well.
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    Oracle Database Administration
    English
    Time Management
    Computer Skills
    Microsoft Excel
    PHP
  • $99 hourly
    I have extensive experience in all aspects of Information Technology from the smallest job to the most complex systems. I have consulted with a wide variety of organizations both internationally and locally in the Washington DC metro area. I am particularly knowledgeable in the Non-Profit area where I have developed custom software, built database websites as well as recommended off-the-shelf Association Management Software and implemented the transition to these systems. I have designed and implemented both complex and simple networks from a small 4 user office to a several thousand user networks. In this regard, I have managed large data centers as well as small centers with only a few servers. I have been involved in virtualizing servers to minimize the data centers footprint. I have also wired a number of offices for ethernet as required by the client. Particularly for office moves and setting up new retail space such as restaurants etc. I have transitioned a number of organizations from old analogue phone systems to IP phone systems as part of my overall IT support. I manage the transition as well as continue to manage the phone system as required. In addition, I have worked with individuals both in home offices as well as at the client site assisting with implementation of hardware, software and networking of their PCs and MACs. I can diagnose and troubleshoot problems that include Internet connectivity, printing problems, Microsoft Office issues etc. I am very patient with end-user frustration.
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    Fortran
    Hardware Troubleshooting
    Network Engineering
    Excel Macros
    Microsoft Access
    Computing & Networking
    COBOL
    SQL Programming
    Web Design
    Visual Basic
    FoxPro Programming
    Data Backup
    ASP.NET
    WordPress
    Web Application
  • $50 hourly
    I'm an experienced hands-on Software Engineer / Architect (and an expert-vetted Upwork freelancer) with the expertise of the SDLC of small to large-scale enterprise products. An avid learner of the latest technologies, standards, idioms, design patterns, and best practices to build robust, scaleable, and quality products. Also, well-versed with formal code reviews, refactoring, testing, maintenance, and documentation. Areas of Expertise and Interest -------------------------------------- - Backend / Cloud / Distributed Systems - Cross-platform Software Development - Open-source Software Development - Embedded and Systems Development - Performance Critical Applications - Endpoint and Cyber Security Keywords ------------ - C, C++, STL, Boost, Qt, Golang, Java (Core), Assembly - Scripting (Shell/Bash, Ruby, Python) - Build Systems (Make, CMake, QMake, Autotools) - Concurrency, Multithreading - Network Programming (TCP/UDP), gRPC - Web (HTTP/HTTPS, REST APIs, HTML, CSS, JavaScript) - Serialization/Deserialization (Binary, JSON, Protocol Buffers, MsgPack) - Command Line (Linux Shell, Windows cmd/PowerShell) - Operating Systems (Linux - Ubuntu/CentOS, macOS, Windows) - Version Control (Git/GitHub/GitLab, BitBucket, CVS, SVN) - Continuous Integration (GitHub Actions) - Profiling, Benchmarking (Valgrind Suite, perf, KCachegrind) - Testing, Load Testing, Automated Testing - Documentation (Markdown, Word, Google Docs) - Vagrant, Docker, Docker Compose, Kubernetes (minikube), Helm - Packaging (Debian/deb, RHEL/rpm, Windows/nuget, ...) - Miscellaneous: Databases, SQL, Redis, JIRA, Confluence, ...
    vsuc_fltilesrefresh_TrophyIcon DOS
    GitHub
    Back-End Development
    Ruby
    Golang
    Software Architecture & Design
    Bash
    Microsoft Windows
    C
    Docker
    Python
    C++
    Linux
    macOS
    Kubernetes
    Qt Framework
  • $40 hourly
    MSc. in Computational Physics, with lot of experience in writing simulation programs with different programming languages. I have good experience with machine learning and artificial intelligence, a strong background in Mathematics and Physics. I like solving problems and optimizing algorithms. I keep deadlines and deliver quality products. I am comfortable with the following programming languages: C/C++, Fortran, Python, Matlab, PHP/MySQL, Javascript/Jquery, VB, Microsoft Excel and Access VBA, R, Java, Turbo Pascal. I have been working with LaTeX for more than 10 years, and I have produced complex mathematical expressions as well as LaTeX templates. I primarily work to satisfy my clients, derive personal satisfaction on a job well done, and only then comes payment.
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    Visual Basic for Applications
    Delphi
    Mathematics
    Fortran
    Scientific Computation
    MATLAB Script
    Pascal
    Physics
    Data Science
    C
    LaTeX
    MATLAB
    R
    Python
  • $25 hourly
    I am a Quality Engineer with over 10 years of experience in software testing, that includes designing, building, and maintaining different Test Automation Frameworks for banking, finance, and HR technology industries, in a continuous integration/continuous delivery (CI/CD) environment. I am also a contractual Automation Expert and helps out with all things RPA related for an IT consulting company that specializes in Digital Transformation and Automation.
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    SQL
    C#
    Microsoft VBScript
    Java
    Apache Groovy
  • $20 hourly
    Hello! my name is Magdy. - I have 20+ years of experience working as a freelancer. - My main skill is to deliver on time, always communicate and put a big eye on details. I can help you for the following :- * Generate Barcode Labels from Excel Files * Generate Avery labels From Excel files * Extract Data from PDF files to Excel or CSV * Convert Single Label PDF to Avery Labels * Convert Avery Labels to Single Labels * Stamp PDF using Text , Image and Barcode * Split PDF File * Merge PDF files * Auto Print PDF files from folder * Auto print ZPL files from Folder * ZPL Programming
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    Visual Basic
    Visual Basic for Applications
    Web Crawling
    Amazon
    Thermal Printer
    Adobe Acrobat
    Data Scraping
    Scripting
    Desktop Application
    Label & Packaging Design
    Copy Editing
    Microsoft PowerPoint
    PDF Conversion
    Microsoft Office
    Document Conversion
  • $50 hourly
    •Expert Advisors. •Scanners •Dashboards •Indicators. •Scripts. Hi, I'm Habiba. I'm a Meta Trader 4 MQL4 programmer with 5+ years of experience in creating Expert Advisors, building Indicators(Dashboards, Scanners), and writing scripts. I would love to assist you in coding your Custom Strategy or Indicator or a Fully Functional Custom Strategy-based Expert Advisor. Feel free to arrange a call(free of charge) to discuss your project. Best regards, Habiba
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    Technical Analysis
    Forex Trading
    MQL 4
    MetaTrader 4
    Trading Automation
  • $25 hourly
    vsuc_fltilesrefresh_TrophyIcon DOS
    Data Recovery
    Proxmox VE
    Network Administration
    RAID Administration
    Cisco IOS
    Linux System Administration
    Unix System Administration
    LAN Administration
    Linux
  • $30 hourly
    Ever since I was a kid, I've been fascinated by computers. I was introduced to Linux almost 15 years ago, and that was the time I discovered my first true passion.. I worked as a software developer (iOS - Swift) and Linux system administrator, but I wasn't satisfied with neither developing corporate/commercial applications, nor repeating same routines like adding/removing users, setting up VPSs, configuring programs following the same conventions.. I needed something to satisfy my passion for creativity and problem solving/algorithmic/programmatic thinking, but that is still related to Linux.. Enter Bash, an amazing way to interact and utilize full potential of your Unix OS in a totally programmatic manner.. I've been perfecting my Bash skills for over 5 years now, and I have quite a lot of complex projects, successful jobs and happy clients to support that.. I'm also quite proficient with Python as well, but given my stand on mainstream appliances, I'm only interested in jobs utilizing core principles, I DON'T have any "domain-specific" skills, so please DON'T contact me about AI/Machine Learning/Trading/Full stack/bot automation etc, only basic python skills.. That being said, if you're looking for a Linux expert who thinks of Bash as a programming language and vim as an IDE, feel free to reach out and I'd be happy to provide my services! :)
    vsuc_fltilesrefresh_TrophyIcon DOS
    Bash
    Unix
    Vim
    Linux
    Awk
    Unix Shell
    Regex Writing
    Bash Programming
    Git
    Python
  • $40 hourly
    I am a software developer and researcher. My knowledge in this field will help me solve any problem in this field. Moreover, my devotion to the job will encourage me to carry any difficult tasks. I have the skills which will aid me to maintain a good relationship with clients and team members. My positive attitude will always keep me on the right track. My hardworking attitude will be useful for the development of the company I have 5+ years of experience in software development and machine learning; Tools and technologies: — NLP — LLMs & ChatGPT — Machine Learning and Deep Learning ; — CNN, ANN — Keras — Tensorflow — PyTourch — Python — YOLO — PyQt5 — C/C++ — C# — IoT & Embedded Systems — Java — Arduino — Raspberry Pi — Automation — Web (HTML, CSS, JavaScript) — Node.js — Vue — Arduino — Raspberry PI — Flutter
    vsuc_fltilesrefresh_TrophyIcon DOS
    Linux
    PyQt
    Microsoft Windows
    Raspberry Pi
    Artificial Intelligence
    Deep Learning
    OpenCV
    Natural Language Processing
    Python
    Machine Learning Model
    Machine Learning
    Neural Network
    Computer Vision
    Artificial Neural Network
  • $65 hourly
    I'm an experienced software developer based in the UK. I've worked with a wide variety of businesses such as NHS Digital, Green Flag, Severn Trent Water and Boohoo.com; on a wide variety of applications, ranging from content management systems & high volume ecommerce to genetic algorithms & linear optimisation. My priority is making sure that your project is a success, please get in touch to work together on something great!
    vsuc_fltilesrefresh_TrophyIcon DOS
    MySQL Programming
    MVC Framework
    Microsoft SQL Server Programming
    C#
    PHP
    .NET Framework
  • $10 hourly
    My 3 significant years of work experience and multiple skills and qualities make me an ideal candidate for the role. Duties performed involve weighing and evaluating factors requiring judgment, analytical ability, and problem-solving. I am responsible for making sure our customers have a great experience. I was able to deliver an exceptional customer experience by responding to inquiries in a timely, effective and accurate manner. I successfully dealt with diverse customers and clients with unique demands. I am skilled in my emotional intelligence and keen to utilize my passion and vast experience in excellent customer service to provide the best possible customer experience for clients and customers. I believe that is the key success of good quality customer service. Also, adept at managing departmental administrative duties as assigned. With international solid and key communication skills and significant insight into global and cultural diversity, I feel that I am a knowledgeable and qualified candidate. Looking forward to a fruitful collaboration with you. Please consider my experience and qualifications for this position: ⦁ Received supervisory calls and managed all assigned client escalations and issues to full resolution. ⦁ Handled priority queues within the Customer Care department including Billing Retention, Level 2 Support, and other escalated situations. ⦁ Strong skills in Salesforce, Zendesk, Freshdesk, NetSuite, MS Office: Excel, Word, Outlook, PowerPoint, Google Sheets, Google Keep, Google Calendar, Desktop Sharing, VoIP, Slack, Microsoft Teams, Google Chat, Trello, ⦁ Provide customer support in a 24/7 service desk support 145 collocation data centers globally with N+1 redundancy and 99.99% uptime ⦁ Enter all requests into online locking ticketing systems for tracking purposes and assign appropriate responsibility for problem resolution via Email, Phone, Google Form, and Customer Portal within established service levels ⦁ Part of specialized team managing orders only for the top accounts: financial services, enterprise, Cloud, and Content Providers ⦁ Directed investigations to verify and resolve customers' complaints. ⦁ Work with the Vendors, Sellers, and Carriers, about customers' inquiries of the products and complaints that are resolved in accordance with Company policies. Regards, Edralin E.
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    Order Tracking
    Microsoft Office
    Ticketing System
    SEO Keyword Research
    Phone Communication
    Customer Service
    Customer Support
    Social Media Management
    Technical Support
    Email Support
    Online Chat Support
  • $13 hourly
    I have been working in Upwork since 2010 with focus on below tasks: - Microsoft Office/Excel VBA script and automation - Website data scraping/crawling - Windows automation script and small software - Google apps script and Google API script for automated tasks. With profesional way of working and attitude. I hope that i can work with all of you and keep long term relationship.
    vsuc_fltilesrefresh_TrophyIcon DOS
    MySQL
    Google Spreadsheets API
    Desktop Application
    Web Crawling
    Microsoft Excel
    Automation
    Perl
    Google Apps Script
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