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5 senior backend developer jobs found

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senior backend developer £400 - £500 Remote
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Contract Spy
Feb 23, 2026
Duration not stated
Senior Solidity Engineer at Test Yantra Software Solutions Private Limited, Remote, £400 per day
£400 per day
Contract Spy Remote
Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial instruments and systems. Bonus...
Contract Spy
Feb 20, 2026
Duration not stated
Modern Start-Up Product Owner at Toucanberry Tech, Remote, £500 per day
£500 per day
Contract Spy Remote
Toucanberry Tech is a UK-based boutique software consultancy delivering high-impact solutions to the financial sector. You’ll be joining a pivotal project, building a cutting-edge reinsurance platform from the ground up for a global reinsurer in Bermuda. ROLE: We are looking for a hungry and hands-on Product Owner to join our dedicated onshore team. This is not a project management role; we need a modern start up Product Owner who lives and breathes the product, sits side-by-side with our developers, and is passionate about building exceptional backend, data-centric solutions. Key Responsibilities: Own and manage the product backlog, translating high-level business requirements into clear, actionable user stories for the development team. Collaborate daily with a co-located, onshore squad of engineers, QAs, and designers to ensure seamless delivery and a shared understanding of the product vision. Define and analyse metrics to inform the success of the...
Contract Spy
Feb 13, 2026
Duration not stated
Modern Start-Up Product Owner at Toucanberry Tech, Remote, £500 per day
£500 per day
Contract Spy Remote
Toucanberry Tech is a UK-based boutique software consultancy delivering high-impact solutions to the financial sector. You’ll be joining a pivotal project, building a cutting-edge reinsurance platform from the ground up for a global reinsurer in Bermuda. ROLE: We are looking for a hungry and hands-on Product Owner to join our dedicated onshore team. This is not a project management role; we need a modern start up Product Owner who lives and breathes the product, sits side-by-side with our developers, and is passionate about building exceptional backend, data-centric solutions. Key Responsibilities: Own and manage the product backlog, translating high-level business requirements into clear, actionable user stories for the development team. Collaborate daily with a co-located, onshore squad of engineers, QAs, and designers to ensure seamless delivery and a shared understanding of the product vision. Define and analyse metrics to inform the success of the...
Contract Spy
Feb 12, 2026
Duration not stated
Data Product Owner (Pipelines & Modelling) at Toucanberry Tech, Remote, £500 per day (Outside IR35)
£500 per day
Contract Spy Remote
Toucanberry Tech is a UK-based boutique software consultancy delivering high-impact solutions to the financial sector. We work in agile, cross-functional teams to solve complex challenges with speed, autonomy, and innovation. The Role We are looking for a hands-on Data Product Owner to join our dedicated onshore team. We need someone with a start up mindset who lives and breathes the product, sits side-by-side with our developers, and is passionate about building exceptional backend, data-centric solutions. Key Responsibilities: Owning the end-to-end data lifecycle, from ingestion and transformation through to modelling, analysis, and visualisation. Converting disparate raw data into reliable, structured datasets ready for modelling, analysis, and visual reporting. Managing the product backlog, translating high-level business requirements into clear, actionable user stories. Leading a high-performing squad of engineers and analysts to ensure seamless...
Contract Spy
Feb 06, 2026
Duration not stated
Modern Start-Up Product Owner at Toucanberry Tech, Remote, £500 per day
£500 per day
Contract Spy Remote
Toucanberry Tech is a UK-based boutique software consultancy delivering high-impact solutions to the financial sector. You’ll be joining a pivotal project, building a cutting-edge reinsurance platform from the ground up for a global reinsurer in Bermuda. ROLE: We are looking for a hungry and hands-on Product Owner to join our dedicated onshore team. This is not a project management role; we need a modern start up Product Owner who lives and breathes the product, sits side-by-side with our developers, and is passionate about building exceptional backend, data-centric solutions. Key Responsibilities: Own and manage the product backlog, translating high-level business requirements into clear, actionable user stories for the development team. Collaborate daily with a co-located, onshore squad of engineers, QAs, and designers to ensure seamless delivery and a shared understanding of the product vision. Define and analyse metrics to inform the success of the...
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