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4 senior backend engineer jobs found in Remote

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Remote Hourly/Freelance senior backend engineer
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Contract Spy
Aug 28, 2026
Hourly/Freelance
Senior Backend Engineer - Kotlin at voize, Remote, 3 Months+, £Freelance Rate
Contract Spy Remote
Why voize? Because we’re more than just a job! At voize, we believe the greatest gift to frontline workers is time - time to care, connect, and be present. Today, that time is lost to admin work that pulls nurses away from what matters most: people .   Your Mission As a Freelance Senior Backend Engineer for our German Market squad , you’ll ensure that data flows smoothly between our products and our partners' software solutions. You'll build and maintain the integrations that connect the voize with senior care and hospital software platforms. We are open for you to be based remotely across Germany, France or the UK.   Your Daily Business – No two days are alike Shape the future of our integrations – Develop interfaces that seamlessly connect voize with systems in the care and medical sector Build future-proof solutions – Develop a scalable API, set industry standards, and work closely...
Contract Spy
Aug 26, 2026
Hourly/Freelance
Python Coding Specialist - Freelance AI Trainer Project at Meridial, Remote, £Hourly Rate
Contract Spy Remote
Are you a coding expert fluent in Python eager to shape the future of AI? Large‑scale language models are evolving from clever chatbots into powerful engines of scientific discovery. With high‑quality training data, tomorrow's AI can democratize world‑class education, keep pace with cutting‑edge research, and streamline software development for engineers everywhere. That training data begins with you—we need your expertise to help power the next generation of AI. We're looking for Python coding specialists who live and breathe algorithms, data structures, software architecture, frontend and backend development, cloud infrastructure, and systems programming—and who can do so fluently using Python. You'll challenge advanced language models on topics like asynchronous programming, RESTful API integration, memory management, object-oriented design, secure coding practices, and debugging distributed systems—documenting every failure mode so we can harden model...
Contract Spy
Aug 25, 2026
Hourly/Freelance
Fractional Growth & Commercial Analytics Lead at Krotos, Remote, Part-Time, £Freelance Rate
Contract Spy Remote
Location: Remote Europe, ideally UK / Greece Job Type: Freelance agreement: 2 days per week initially, reducing to approximately 1 day per week once the core analytics system is established. Reports to: CEO About Krotos   Krotos builds creative audio software used by sound designers, filmmakers, video editors and content creators worldwide. Our products have been used on major productions including Game of Thrones , Avengers and The Lord of the Rings . We are now building the next generation of AI-powered sound creation tools while growing our subscription and enterprise businesses. We have plenty of data. Our challenge is turning it into clear, reliable commercial decisions. That is where you come in.   Your Mission   Give Krotos one reliable commercial truth, explain why the numbers move, and identify where we should focus to grow recurring revenue.   This is not primarily a dashboard or reporting role....
Contract Spy
Aug 19, 2026
Hourly/Freelance
Python Coding Specialist - Freelance AI Trainer Project at Meridial, Remote, £Hourly Rate
Contract Spy Remote
Are you a coding expert fluent in Python eager to shape the future of AI? Large‑scale language models are evolving from clever chatbots into powerful engines of scientific discovery. With high‑quality training data, tomorrow's AI can democratize world‑class education, keep pace with cutting‑edge research, and streamline software development for engineers everywhere. That training data begins with you—we need your expertise to help power the next generation of AI. We're looking for Python coding specialists who live and breathe algorithms, data structures, software architecture, frontend and backend development, cloud infrastructure, and systems programming—and who can do so fluently using Python. You'll challenge advanced language models on topics like asynchronous programming, RESTful API integration, memory management, object-oriented design, secure coding practices, and debugging distributed systems—documenting every failure mode so we can harden model...
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