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5 senior backend developer jobs found

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up to 6 Months senior backend developer
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Contract Spy
Jun 01, 2026
up to 6 Months
Senior Backend Engineer (Go) at CloudFactory, Remote, 4 Months, £Contract Rate
Contract Spy Remote
At CloudFactory, we are a mission-driven team passionate about unlocking the potential of AI to transform the world. By combining advanced technology with a global network of talented people, we make unusable data usable, driving real-world impact at scale. More than just a workplace, we're a global community founded on strong relationships and the belief that meaningful work transforms lives. Our commitment to earning, learning, and serving fuels everything we do as we strive to connect one million people to meaningful work and build leaders worth following. Our Culture At CloudFactory, we believe in building a workplace where everyone feels empowered, valued, and inspired to bring their authentic selves to work. We are: Mission-Driven: We focus on creating economic and social impact. People-Centric: We care deeply about our team's growth, well-being, and sense of belonging. Innovative: We embrace change and find better ways to do things together. Globally...
Contract Spy
May 28, 2026
up to 6 Months
FastAPI Engineer - Python at Photoroom, London, 3-6 Months, £Contract Rate
Contract Spy London, UK
About us Founded in 2019 and part of Y Combinator's 2020 cohort, Photoroom is the leading visual solution for e-commerce. We've raised Series B funding and reached 300+ million users worldwide, processing over 5 billion images annually and serving both small businesses and major enterprises like Amazon, DoorDash, and Decathlon through our mobile app, web platform, and API. We're a remote-friendly team of 100+ passionate builders giving e-commerce businesses superpowers to create visuals that help them grow, making the hardest parts of selling online disappear. We focus on craft, innovation, and collaboration, creating exceptional impact for e-commerce businesses worldwide. Python Engineer – Public API (Contract) Day rate: Negotiable Duration: 6 months Location: Remote. We can hire people already based in selected countries only: France, Germany, Ireland, Italy, Portugal, Spain, UK   About the Role You will design,...
Contract Spy
May 20, 2026
up to 6 Months
FastAPI Engineer - Python at Photoroom, London, 3-6 Months, £Contract Rate
Contract Spy London, UK
About us Founded in 2019 and part of Y Combinator's 2020 cohort, Photoroom is the leading visual solution for e-commerce. We've raised Series B funding and reached 300+ million users worldwide, processing over 5 billion images annually and serving both small businesses and major enterprises like Amazon, DoorDash, and Decathlon through our mobile app, web platform, and API. We're a remote-friendly team of 100+ passionate builders giving e-commerce businesses superpowers to create visuals that help them grow, making the hardest parts of selling online disappear. We focus on craft, innovation, and collaboration, creating exceptional impact for e-commerce businesses worldwide. Python Engineer – Public API (Contract) Day rate: Negotiable Duration: 6 months Location: Remote. We can hire people already based in selected countries only: France, Germany, Ireland, Italy, Portugal, Spain, UK   About the Role You will design,...
Contract Spy
May 13, 2026
up to 6 Months
FastAPI Engineer - Python at Photoroom, London, 3-6 Months, £Contract Rate
Contract Spy London, UK
About us Founded in 2019 and part of Y Combinator's 2020 cohort, Photoroom is the leading visual solution for e-commerce. We've raised Series B funding and reached 300+ million users worldwide, processing over 5 billion images annually and serving both small businesses and major enterprises like Amazon, DoorDash, and Decathlon through our mobile app, web platform, and API. We're a remote-friendly team of 100+ passionate builders giving e-commerce businesses superpowers to create visuals that help them grow, making the hardest parts of selling online disappear. We focus on craft, innovation, and collaboration, creating exceptional impact for e-commerce businesses worldwide. Python Engineer – Public API (Contract) Day rate: Negotiable Duration: 6 months Location: Remote. We can hire people already based in selected countries only: France, Germany, Ireland, Italy, Portugal, Spain, UK   About the Role You will design, build, and...
Contract Spy
May 21, 2026
up to 6 Months
Senior Software Engineer, Native Applications and Networking at Secure Code Warrior, London, 3 Months, £Contract Rate
Contract Spy London, UK
Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices!   Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles. More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security. We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom.   Secure Code Warrior is seeking a Senior Engineer to take long-term ownership of our core system-level product suite across Windows and macOS. In this contract role, you will be the architectural...
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