26 to 50 of 50 Senior Developer Jobs in London

Blazor developer/Senior .NET Integration Engineer City of London (3 days in office) Up to £85,000 We are seeking a Senior Integration Engineer to design and build scalable, enterprise-grade UI systems using Blazor integrated with .NET APIs. This role focuses on owning ...

Excellent opportunity for a Senior Software Developer to play a key role in architecting, developing, and enhancing our clients in-house trading and research systems. This is an opportunity to work on greenfield projects, influence architectural decisions, and directly impact systems that support real-world trading strategies. … senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C# .NET SQL Server ASP.NET ecosystem, developing high-performance, reliable, and maintainable applications. Key Responsibilities Design, develop, and maintain high-performance applications ...

Excellent opportunity for a Senior Software Developer to play a key role in architecting, developing, and enhancing our clients in-house trading and research systems. This is an opportunity to work on greenfield projects, influence architectural decisions, and directly impact systems that support real-world trading strategies. … senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C# .NET SQL Server ASP.NET ecosystem, developing high-performance, reliable, and maintainable applications. Key Responsibilities Design, develop, and maintain high-performance applications ...

client is in the Financial Sector and is looking to grow the team with a new Senior Developer. This role can be done remote with weekly meet ups in London on a Wednesday. The technology function is around 80 people total and you will work in an Agile team … 8. Client Details Our client is in the Financial Sector and is looking to grow the team with a new Senior Developer. This role can be done remote with weekly meet ups in London on a Wednesday. The technology function is around 80 people total and you will work ...

Senior Python/Django Developer (Contract) £700-£750 per day (Inside IR35) | Remote | 6 months We're supporting a leading UK retailer as they scale an AI-driven pricing platform across Europe, and are looking for a Senior Python/Django Developer to support the next ...

Senior Django/Python Developer Pay Rate: up to £700 (Inside IR35 - Umbrella) Duration: 6 months' Working arrangement: Once a every 3 months - London We're working on behalf of aFTSE 100 leading UK retailer, supporting the expansion of a highly successful AI-driven Smart Pricing programme. Following … results across well-known UK household brands, the organisation is now extending this platform across its European operations and is looking for an experienced Senior Django/Python Developer to support the next phase of delivery. This is a pure backend role, focused on scalable, high-quality Python ...

Excellent opportunity for a Senior Software Developer to play a key role in architecting, developing, and enhancing our clients in-house trading and research systems. This is an opportunity to work on greenfield projects, influence architectural decisions, and directly impact systems that support real-world trading strategies click ...

Title: Senior Front-End Developer (React/TypeScript/Python/Azure) Role Type: Contract Contract Length: 3 months initial Location: UK based (Onsite once a week in London) Summary Our client is looking for a Senior Front-End Developer to build modern, secure and high ...

reach and stability of a global financial services business. To learn more, visit Payments.corpay.com/cross-border. Role Overview: We are looking for a Senior Full Stack Software Developer to help evolve the platforms that power Corpay Cross-Borders international payments and foreign exchange capabilities. This ...

Celon is seeking a Senior Microsoft Dynamics Developerto join our growing team on a 12-month contract, with an immediate start and the potential to extend. This is a hands-on role for someone who can work independently, understand business needs, and translate them into practical, well-structured solutions. … sound technical decisions, challenge requirements where needed, and ensure solutions are scalable, maintainable, and fit for purpose. The Role We are looking for a Senior Microsoft Dynamics Developer to take ownership of the design and delivery of Dynamics 365 solutions. This is a hands-on role for someone ...

Celon is seeking a Senior Microsoft Dynamics Developerto join our growing team on a 12-month contract, with an immediate start and the potential to extend. This is a hands-on role for someone who can work independently, understand business needs, and translate them into practical, well-structured solutions. … sound technical decisions, challenge requirements where needed, and ensure solutions are scalable, maintainable, and fit for purpose. The Role We are looking for a Senior Microsoft Dynamics Developer to take ownership of the design and delivery of Dynamics 365 solutions. This is a hands-on role for someone ...

Flutter Developer £70,000 Hybrid (Scotland) Permanent Most Flutter roles are about building apps. This one is about building technology that connects software with real-world hardware. We're working with a global technology business operating across 13 countries, looking for an experienced Flutter Developer to join their … both software and hardware innovation Interview Process Two-stage process: Hiring Manager Interview Head of R&D Interview If you're a Flutter developer who wants to work on more than just apps and you're excited by the challenge of bringing software and hardware together, I'd love ...

Must have Bachelor's Degree in Computer Science, Maths, Stats, or Op Research Recruit From UK only Annual Salary - £250,000 - £600,000 Senior Quantitative Developer/Research & Data Engineer - LONDON, UK x3 - Annual Salary - £250,000 - £600,000 (base salary £120k - £160k+) Primary Skills - Python, C++, quantitative … into an independent firm already managing $6bn+ AUM, with ambitions to become one of the largest quant spinouts in the industry. They are hiring senior Quantitative Developers/Research & Data Engineers in London to help build the core infrastructure of the new platform. The environment combines the backing, leadership ...

seeking a senior Moodle PHP developer with strong technical product ownership experience to lead development of a large scale global learning platform. Role Build and extend Moodle via custom plugins and core development Own technical architecture and product delivery decisions Design APIs, integrations and scalable system architecture Improve ...

Senior Django/Python Developer Pay Rate: up to £700 (Inside IR35 - Umbrella) Not sure what skills you will need for this opportunity Simply read the full description below to get a complete picture of candidate requirements. Duration: 6 months' Working arrangement: Once a every 3 months - London ...

Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at senior levels who are passionate about crafting exceptional products. Initially it will be a six-month contract but there is potential for it to be extended. The role … systems and extensive datasets. Foster close collaboration with our Product, Data, Front-end, Platform, and Security teams. Knowledge and Skills: Demonstrated expertise as a Senior Backend Developer. Proficiency in Python as your primary language, or willingness to adapt. Hands-on experience with RESTful APIs and/or GraphQL. Proficiency ...

I am currently working with a London-based financial services client who are actively seeking multiple Frontend Developers for a brand-new business-critical project. What you'll need to succeed Extensive React/Typescript ...

client is a London-based financial-services company who are actively seeking a Senior Python Quant Developer to join on an initial 12-month contract basis. What you'll need to succeed : Extensive hands-on Python Development experience building REST APIs with FastAPI or similar. Strong quantitative background ...

Java Software Engineer Join a tier-one global financial institution undergoing a major digital transformation across its capital markets technology estate. You'll play a key role in scaling a mission-critical platform, driving architecture ...

Online Trading Platform FinTech Client are looking for experienced Senior Java Engineers to join a new team to modernise and simplify critical legacy services using the latest AI Tools and Internally Built LLMs.The client can offer up to £120,000 Basic + Bonus (c25-35k) + PensionThis role ...

Online Trading Platform FinTech Client are looking for experienced Senior Java Engineers to join a new team to modernise and simplify critical legacy services using the latest AI Tools and Internally Built LLMs. The client can offer up to £120,000 Basic + Bonus (c25-35k) + Pension This ...

Software Engineer (Android), Remote, UK About Revolut People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of ...

Software Engineer (Android), Remote, UK About Revolut People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of ...

Celon is seeking a Senior Microsoft Dynamics Developerto join our growing team on a 12-month contract, with an immediate start and the potential to extend. This is a hands-on role for someone who can work independently, understand business needs, and translate them into practical, well-structured solutions. ...

Celon is seeking a Senior Microsoft Dynamics Developerto join our growing team on a 12-month contract, with an immediate start and the potential to extend. This is a hands-on role for someone who can work independently, understand business needs, and translate them into practical, well-structured solutions. ...