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Freelance Operating Systems Developer - Kirill Erokhin
Freelance Operating Systems Developer5.0 (233 reviews)

I am a senior full-stack & DevOps developer with a track record of maintaining distributed infrastructure, recent deep experience in large-scale data pipelines and a growing skillset and interest in applied AI/LLM integration. My recent work at an e-commerce search engine startup had me building and maintaining scrapers and a data pipeline that ingested over 10M product SKUs into an OpenSearch index, which was used for hybrid vector+lexical product search, enriched with LLM signals extracted as part of the pipeline. I've used reranking techniques like RRF to enhance relevance after retrieval, and RAG/grounding for features that answered personalized user queries with recommendations grounded in real customer reviews. My earlier work was heavily full-stack and always involved infrastructure where I often built and supported systems end-to-end, very often in context of a regulated market - with great examples like Deckard (PropTech/GovTech), Sick Children's Hospital/RareConnect (Healthcare-adjacent), and Ethoca \[now MasterCard\] (FinTech). I've also led IaC initiatives at Ethoca (Chef/Ansible, in 2016-17), and even implemented IaC from scratch for two startups - Pastel Labs (Terraform automation of AWS infrastructure for a B2B SaaS and a tutoring marketplace, in 2021), and Rilara (Pulumi for AWS infrastructure of their e-commerce product, in 2025-26). My startup experience is proven track record of working independently, but I also thrive as part of a team, with most recent example of being part of Deckard's distributed remote engineering team of 25+ people spread across the US and Australian timezones. Claude Code is part of my everyday workflow, and I am happy to consider myself a relatively-older senior developer who has successfully adapted to an AI-assisted/AI-first SDLC without compromising the quality of my work. I would be very excited to continue my journey with an opportunity in healthcare or finance, where I could apply my IaC skills while continuing to explore the world of LLM applications to improve user experience in these regulated environments. Should you have any questions about any of the background I mentioned here or on the attached resume, I would be glad to answer them in an interview at a time of your convenience. Thank you!

Freelance Operating Systems Developer - Willem Van Onsem
Freelance Operating Systems Developer5.0 (15 reviews)

Developer by day, programmer by night. I obtained a master of science in civil engineering (computer science) and participated - together with several teams - in programming contests and hackathlons. I answer questions on StackOverflow on a daily basis and wrote courses on Artificial Intelligence and Digital Electronics. I am mainly interested in Haskell, Python, and Prolog. I worked as a researcher in the field of hyperheuristics (artificial intelligence), a teaching assistant in computer science and as a data scientist and technical lead developer in an AI startup. During my spare time I developed small (and larger) projects to help with daily routine. For me, a computer should aim to automate everything that is boring, such that one can pay more attention to what is interesting in life. After each session, I aim to write a document (usually within one week) that describes what we discussed. The public GPG key can be found here: https://pgp.mit.edu/pks/lookup?op=vindex&search=0x6A148004A6024E2B Usually available between 17:30 - 21:30 UTC (Monday to Friday) and 9:30 - 21:30 UTC (weekend). See for time conversions https://goo.gl/eWdDCG (week days) and https://goo.gl/kdvMsa (weekends).

Freelance Operating Systems Developer - Vivek Kumar Verma
Freelance Operating Systems Developer

LinkedIn : https://www.linkedin.com/in/vivek-kumar-verma-29410460/ I am a Software Development Engineer with around 5+ years of experience that loves developing solutions to improve processes of everyday activities. I am working as Software Development Engineer at Expedia and I am also the part of the hiring team. I regularly take interviews for Coding and Design rounds. I can help you out. Please message me in private chat to discuss further. I am having an avid interest in Algorithms and Data Structures. I am strong engineering professional with a Bachelor of Technology (B.Tech.) focused in Computer Science and Engineering from Motilal Nehru National Institute of Technology (NIT), Allahabad - India. I have great experience developing applications in Java with Spring Boot. My Technical Skills are as follows : • Proficient in Data Structures and Algorithms • Object Oriented Programming • Programming Languages: C, C++, Java. • Scripting Languages: Python (Intermediate), Linux Shell Scripting • Web Technologies: HTML, CSS, Angular 4 • Frameworks: Spring Boot, Amazon AWS, REST/SOAP • Databases: MySQL • Web/Application Servers: Apache Tomcat • Operating Systems: Windows, Linux, Android, Juniper Junos • Tools: Postman, IntelliJ, Eclipse, Maven, Eclipse, Wireshark, GDB. • Testing: JUnit, JMeter, Mockito, Unit Testing. I have : • Designed and coded application components using Agile and scrum methodologies while applying them in practice. • Entrusted to take up complex task/problems to come up with solutions and delivering it on-time. Please connect with me on LinkedIn. Thanks!

Freelance Operating Systems Developer - Doug Gale
Freelance Operating Systems Developer5.0 (350 reviews)

Started programming at age 12 in 1988 on a Commodore VIC-20. Extremely adept at debugging of all kinds, performance optimization, databases, embedded systems, operating systems, networking, testing and automation across a wide variety of languages, APIs and frameworks, high level as React/Typescript and as low level as knowing several CPUs assembly languages and designing microcontroller PCBs. It is way too much to just enumerate. Formerly worked at Microsoft in Windows Protocols and Engines team.

Freelance Operating Systems Developer - Dato Simó
Freelance Operating Systems Developer5.0 (157 reviews)

### Arc.dev profile Senior backend engineer / DevOps / SRE roles. Ex-Google, years of experience working as a freelance developer. ### Codementor profile I studied an MEng in Computer Science in Spain, and moved to Ireland to work at Google as a Site Reliability Engineer for five years. Them I moved in Argentina, to teach in the country’s biggest University. * I have wide experience teaching how to program, and in explaining the foundational concepts of Computer Science. * I can also help delving into more low-level topics like network programming and operating system internals. * Finally, Data Science & Machine Learning is an area of interest, and I can help you in courses that touch these topics.

Freelance Operating Systems Developer - Mustafa Bamboat
Freelance Operating Systems Developer5.0 (38 reviews)

I've been working in this field since 1998, programming in a variety of languages, including Java and C#. I have taught professional courses designed to meet the needs of reputable organizations. Everything in this universe, in my opinion, is programmed; even atoms are programmed to join together to form molecules. I always do my best to solve problems programmatically.

Freelance Operating Systems Developer - Abi
Freelance Operating Systems Developer5.0 (30 reviews)

Experienced Devops Engineer with good exposure in managing applications hosted on Cloud. Skilled on Infrastructure Provisioning Automation - AWS CFN , Terraform, Azure Resource Manager (ARM), Sceptre and Troposhere Skilled in cloud infra (AWS), OS (Linux & Windows), Python, DevOps Tools (Docker, Git, Ansible, Nexus), Skilled at security as code with the intent of making security and compliance consumable as a service. Experienced on Serverless architecture. (AWS Lambda) Good CI-CD exposure with Jenkins & Gitlab.

Freelance Operating Systems Developer - Yeshasvi Tirupachuri
Freelance Operating Systems Developer5.0 (25 reviews)

I am seasoned expert in robotics and AI with over 8 years of experience in full-stack software development and systems engineering focused on robots and cyber-physical systems. My career has been marked by a commitment to innovation, efficiency, and excellence in academia and tech industry. As a mentor, I am dedicated to helping you navigate the complexities of software development and robotics, ensuring you gain the skills and knowledge necessary to excel your project goals. What I Offer: - Full-Stack Development: Guidance on developing complete software solutions for robotic systems, including front-end, back-end, and middleware. - Robotics Systems Engineering: Expertise in designing, developing, and integrating robotic systems, with a focus on industrial applications. - Project Management: Insights into managing tech projects effectively, including team leadership, Agile methodologies, and Scrum. - API Development: Best practices for creating high-level software stacks and APIs for robotic applications. - CI/CD Optimization: Strategies to optimize continuous integration and deployment pipelines, enhancing productivity and efficiency. - Cross-Functional Team Coordination: Techniques for coordinating teams across different functions to achieve common goals. Over the last several years I gained a significant hands-on experience on several robotic platforms, both in simulation and real hardware, ranging from manipulators, mobile robots to humanoids. **ROS Projects Porfolio:** https://www.youtube.com/watch?v=RYAo0PvXM3Q&list=PLEV059fZ53hcZ6FaNOT3NptL6WltTFwc4&ab_channel=YeshasviTirupachuri

Freelance Operating Systems Developer - Leandro Medus
Freelance Operating Systems Developer5.0 (20 reviews)

During my grad school period, I developed a fascination for programming and embedded systems. Since then, I've been teaching "Embebbed C" for advanced students at the university, and "Advance Programming" in C++. On the other hand, I've worked with algorithms and problem solving, so a strong background in Matlab and Python was required. After academia, I've worked developing embedded C/C++ applications with Qt interfaces. Later, I decided to pursue a Ph.D. in hardware design in FPGAs for fast data processing. Since then, I've developed different projects using C, C++, Python, Qt, Keras, Skit-learn, Pandas, VHDL, scripting, and more. I really enjoy being a mentor because I can continue teaching, giving a different perspective, and helping others with solutions for different cool projects.

Freelance Operating Systems Developer - Suvam Kumar Das
Freelance Operating Systems Developer5.0 (18 reviews)

I am a **Doctoral student** conducting my research work in the field of **Databases and Big Data** at the **University of New Brunswick, Canada**. I joined here since January 2020. I Worked as a **Software Development Engineer** in **Sonim Technologies (India) Pvt Ltd** – Bangalore for **3 years (March 2012 – February 2015)**. Worked on the development of **User Interface (UI) in C language** for Push-to-Talk (PTT) application for Sonim feature phones. I joined the **Department of Higher Education, Govt. of West Bengal, India** as an **Assistant Professor of Computer Science** from **February, 2015** and continued working there till **December, 2019**

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Frequently asked questions

How long do Operating Systems projects normally take?

The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Operating Systems project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Operating Systems request on Codementor, check out our article.

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We don’t charge anything when you post a freelance hiring request for Operating Systems developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.

What makes Codementor Operating Systems developers different?

We do a comprehensive technical and communications screen of all Operating Systems developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Operating Systems developers’ user satisfaction rates.

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