18 software contractor jobs found

Seeking active open-source contributors with demonstrated experience working on well-known open-source repositories (e.g., significant GitHub contributions). Must-have: Strong ability to author and manage Pull Requests (PRs) , including merging new code into large and complex open-source codebases. Prior experience as a Software Engineer for 3+ years is preferred. Rate: Flexible, starting at $150/hr . Looking for expert-level engineers who can start immediately . We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request. Contract and Payment Terms You will be engaged as an independent contractor. This is a fully remote role that can be completed on your own schedule. Projects can be extended, shortened, or concluded early depending on needs and performance. Your work will not involve...

hiring experienced Python Engineers to support a variety of high-impact research collaborations with leading AI labs. Freelancers will help improve AI systems through work extending coding benchmarks that reflect real-world development across diverse languages and domains. This is a unique opportunity to apply your engineering expertise toward shaping the next generation of intelligent systems. Key Responsibilities Develop and validate coding benchmarks in Python by curating issues, solutions, and test suites from real-world repositories Ensure benchmark tasks include comprehensive unit and integration tests for solution verification Maintain consistency and scalability of benchmark task distribution Provide structured feedback on solution quality and clarity Debug, optimize, and document benchmark code for reliability and reproducibility Ideal Qualifications 3–10 years of experience as a backend software engineer, ML engineer,...

Seeking active open-source contributors with demonstrated experience working on well-known open-source repositories (e.g., significant GitHub contributions). Must-have: Strong ability to author and manage Pull Requests (PRs) , including merging new code into large and complex open-source codebases. Prior experience as a Software Engineer for 3+ years is preferred. Rate: Flexible, starting at $150/hr . Looking for expert-level engineers who can start immediately . We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request. Contract and Payment Terms You will be engaged as an independent contractor. This is a fully remote role that can be completed on your own schedule. Projects can be extended, shortened, or concluded early depending on needs and performance. Your work will not involve...

hiring experienced Python Engineers to support a variety of high-impact research collaborations with leading AI labs. Freelancers will help improve AI systems through work extending coding benchmarks that reflect real-world development across diverse languages and domains. This is a unique opportunity to apply your engineering expertise toward shaping the next generation of intelligent systems. Key Responsibilities Develop and validate coding benchmarks in Python by curating issues, solutions, and test suites from real-world repositories Ensure benchmark tasks include comprehensive unit and integration tests for solution verification Maintain consistency and scalability of benchmark task distribution Provide structured feedback on solution quality and clarity Debug, optimize, and document benchmark code for reliability and reproducibility Ideal Qualifications 3–10 years of experience as a backend software engineer, ML engineer,...

Seeking active open-source contributors with demonstrated experience working on well-known open-source repositories (e.g., significant GitHub contributions). Must-have: Strong ability to author and manage Pull Requests (PRs) , including merging new code into large and complex open-source codebases. Prior experience as a Software Engineer for 3+ years is preferred. Rate: Flexible, starting at $150/hr . Looking for expert-level engineers who can start immediately . We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request. Contract and Payment Terms You will be engaged as an independent contractor. This is a fully remote role that can be completed on your own schedule. Projects can be extended, shortened, or concluded early depending on needs and performance. Your work will not involve...

Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation isproject-based, not permanent employment. What this opportunity involves You'll create challenging coding test cases that push AI coding systems to their limits: Review and refine realistic coding tasks based on provided production codebases with realistic scope, requirements and information sources Write comprehensive functional tests that validate actual end-to-end behavior and edge-cases, not just superficial checks Craft "fair but hard " challenges where the AI has all the context it needs, but has to work for it (information scattered across files and external sources, complex reasoning required) Analyze AI failures to understand what the model struggles with vs. what it masters Iterate based on feedback...

Title: Freelance Software / Prompt Engineer (Claude Code Expert) Contract: 4 weeks initially Future: Potential for ongoing freelance or permanent role About BoldStream ™ BoldStream ™ is a multi-LLM SaaS platform for marketing and communications professionals. Role We're seeking a freelance Software / Prompt Engineer with strong Claude Code experience to help test, improve and build high-impact automations across BoldStream ™ during a focused two-week engagement. What you'll do Build agentic workflows using tools like OpenAI Agent Builder, LangGraph/LangChain and automation platforms (n8n, Zapier, Make). Use Claude Code and LLM tooling to develop and test AI workflows. Automate data flows and internal tools using APIs and JavaScript/TypeScript. Create reliable prompts, guardrails and testing approaches. Document workflows for non-technical teams. What we're looking for Strong Claude Code experience. Previous experience...

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for proficient programmers to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a full-time...

3Koncept – London (Hybrid / Ad Hoc On-Site) 3Koncept is a small start-up creative consultancy based in London, specialising in strategic solutions for owners and businesses across diverse hospitality and lifestyle industries. We are seeking a proactive, hands-on Freelance IT Consultant to support our growing business on a monthly retainer basis . This role is ideal for someone already working full-time or part-time who is looking to be involved in building something meaningful—rather than treating this as their primary income source. We are not looking for IT agencies or service providers . We want an individual who is genuinely interested in contributing ideas, growth, and long-term development as part of our extended team. About the Role This is a long-term partnership opportunity focused on oversight, proactive support, and ensuring our systems and infrastructure run efficiently. The role is not overly intensive but requires...

Job description About the Role We’re looking for an experienced freelance SEO & Generative AI Content Writer to work with us 2 days per week to create high-performing content that ranks in search engines and is structured to be surfaced by generative AI tools (e.g. ChatGPT, Gemini, and Google AI Overviews). You’ll help us increase visibility, traffic, and engagement by producing clear, well-structured, and semantically rich content.   About HubBox HubBox’shttp://hubbox.com/ makes it easy for any retailer to offer local pickup at their online checkout.  Trusted by 1,500+ global brands, including Macy’s, Gap and Selfridges, HubBox cuts shipping costs and boosts cart conversions for retailers, while providing the flexible, convenient delivery option that 70% of shoppers want.  As a strategic tech partner to leading carriers like UPS, DPD, DHL and Royal Mail, HubBox quickly and reliably increases  OOH network volume –...

This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English. Mindrift is looking for highly skilled Vibecode specialists to join the Tendem project (https://tendem.ai/) and drive specialized data scraping workflows within our hybrid AI + human system. In this role, as an AI Pilot - that's how we refer to this role at Mindrift - you'll collaborate with Tendem Agents that handle repetitive tasks, while you provide critical thinking, domain expertise, and quality control to deliver accurate and actionable results. This part-time remote opportunity is ideal for technical professionals with hands-on experience in web scraping, data extraction and processing. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into...

UAV - Software Integration Engineer. Remote (UK Work Eligibility Required) Occasional travel in England for flight tests and hardware integration. Contract: Initially ~12 weeks (extension likely) Rate: £25-£40 per hour, depending on experience. Time: Flexible/part-time OK (deliverables matter more than hours) ✈ What you’ll do. We’re looking for a software engineer to support the development of a large (>25kg) unmanned aircraft. You will mostly be working around ArduPilot and Mission Planner. This is an MVP-style role: build, test, iterate, and keep things moving with minimal meetings. You’ll start with smaller, well-defined tasks while you ramp up, then take on more complex integrations with more independence as you understand the project’s architecture. ✈ Typical tasks. Depending on your strengths, you’ll get to work on some of the following: - Extend Mission Planner - Added...

About Bristol Groundschool Bristol Groundschool is a leading aviation training provider, delivering specialist digital learning platforms to pilots worldwide. Our software ecosystem include s ATPdigital , a Laravel-based CBT application, a large online question bank, an associated admin system, and an in-browser student portal. As our digital products grow, we are strengthening our internal quality assurance capability. We now have an internal QA tester stepping up into a more senior role and are looking for an experienced QA professional to support and mentor them during this transition. The Role We are seeking an experienced freelance Senior QA Consultant to work with us on a short term temporary, part-time basis to help mature our QA processes and capability. This is a hands-on advisory and coaching role, not a delivery or line-management position . You will work closely with our internal QA tester and development team, providing guidance, feedback,...

This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English. Mindrift is looking for highly skilled Vibecode specialists to join the Tendem project (https://tendem.ai/) and drive specialized data scraping workflows within our hybrid AI + human system. In this role, as an AI Pilot - that's how we refer to this role at Mindrift - you'll collaborate with Tendem Agents that handle repetitive tasks, while you provide critical thinking, domain expertise, and quality control to deliver accurate and actionable results. This part-time remote opportunity is ideal for technical professionals with hands-on experience in web scraping, data extraction and processing. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into...

3Koncept – London (Hybrid / Ad Hoc On-Site)   3Koncept is a small start-up creative consultancy based in London, specialising in strategic solutions for owners and businesses across diverse hospitality and lifestyle industries. We are seeking a proactive, hands-on Freelance IT Consultant  to support our growing business on a  monthly retainer basis . This role is ideal for someone already working full-time or part-time who is looking to be involved in building something meaningful—rather than treating this as their primary income source. We are  not looking for IT agencies or service providers . We want an individual who is genuinely interested in contributing ideas, growth, and long-term development as part of our extended team.   About the Role This is a  long-term partnership opportunity  focused on oversight, proactive support, and ensuring our systems and infrastructure run efficiently. The role...

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Game Engine Developer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work...

Job Overview We are seeking a talented and motivated software & hardware developer to join in the prototyping, trials & final product development of a new device. The successful candidate will assist by supporting the originator with coding, construction, testing & developing the product, within the guidance & functional requirements that evolve. This role offers an excellent opportunity, for anyone locally situated, whether still studying or experienced, to work on an innovative project & to progress to sharing ownership of the resultant company. Responsibilities Analyse requirements and translate them into functional software. Source & construct components for prototyping. Develop & test, clean, efficient, code using AI systems & manual refinement. Collaborate with the developer to deliver seamless solutions. Opportunities This is a rare opportunity to assist in developing a technological solution to a medical...

UAV - Software Integration Engineer. Remote (UK Work Eligibility Required) Occasional travel in England for flight tests and hardware integration. Contract: Initially ~12 weeks (extension likely) Rate: £25-£40 per hour, depending on experience. Time: Flexible/part-time OK (deliverables matter more than hours) ✈ What you’ll do. We’re looking for a software engineer to support the development of a large (>25kg) unmanned aircraft. You will mostly be working around ArduPilot and Mission Planner. This is an MVP-style role: build, test, iterate, and keep things moving with minimal meetings. You’ll start with smaller, well-defined tasks while you ramp up, then take on more complex integrations with more independence as you understand the project’s architecture. ✈ Typical tasks. Depending on your strengths, you’ll get to work on some of the following: - Extend Mission Planner - Added...