201 to 216 of 216 Senior Developer Jobs in London

I’m working with a fast-growing AI company that’s building scalable infrastructure products and developer platforms for next-generation applications. They’re looking for a Frontend Engineer who’s passionate about crafting clean, high-performing user interfaces and exploring how AI-assisted tools and LLMs can improve developer workflows, automation, and product quality 🚀 You’ll join … other relevant LLM development tools Nice to have • Background in data-driven or blockchain-based products • Experience with data visualisation (D3.js, Chart.js) or GraphQL • Interest in performance optimisation and developer tooling 📍 London (Hybrid) 💰 Competitive salary + equity potential If you’re curious about how AI is transforming the way engineers build and scale modern infrastructure and want to be More ❯

I’m working with a fast-growing AI company that’s building scalable infrastructure products and developer platforms for next-generation applications. They’re looking for a Frontend Engineer who’s passionate about crafting clean, high-performing user interfaces and exploring how AI-assisted tools and LLMs can improve developer workflows, automation, and product quality 🚀 You’ll join … other relevant LLM development tools Nice to have • Background in data-driven or blockchain-based products • Experience with data visualisation (D3.js, Chart.js) or GraphQL • Interest in performance optimisation and developer tooling 📍 London (Hybrid) 💰 Competitive salary + equity potential If you’re curious about how AI is transforming the way engineers build and scale modern infrastructure and want to be More ❯

Imagine joining a fintech thats small enough for your code to make a dent yet backed by the kind of financial power that moves billions every day. This isnt another digital transformation project. Its about re-engineering how institutions handle More ❯

A leading international bank is expanding its Fixed Income eTrading capability and seeking a talented Quant Developer to help design and deliver the next generation of electronic trading systems. This is a front-office, hands-on role working directly with traders and quants to build pricing and execution algorithms that drive performance in the bank's Fixed Income business. … career track record and a genuine interest in working closely with trading teams. This is a high-visibility position within the Fixed Income trading business, offering direct access to senior traders and decision-makers. The role provides genuine ownership, technical challenge, and the chance to influence the evolution of a strategic eTrading platform at one of the world's More ❯

As a C# skilled Quant Developer , you'll work closely with portfolio managers, researchers, and data scientists to build and maintain the systems that drive our alpha-generating strategies. You’ll contribute to every part of the investment pipeline—from research tooling and data infrastructure to real-time trading systems. Key Responsibilities: Design, develop, and optimize high-performance trading … eye for detail and a high level of ownership Why Join? Competitive compensation + performance bonuses Direct impact on trading and research performance Flat, collaborative culture with exposure to senior stakeholders State-of-the-art technology stack and hardware Opportunity to work on greenfield projects in a fast-moving environment More ❯

As a C# skilled Quant Developer , you'll work closely with portfolio managers, researchers, and data scientists to build and maintain the systems that drive our alpha-generating strategies. You’ll contribute to every part of the investment pipeline—from research tooling and data infrastructure to real-time trading systems. Key Responsibilities: Design, develop, and optimize high-performance trading … eye for detail and a high level of ownership Why Join? Competitive compensation + performance bonuses Direct impact on trading and research performance Flat, collaborative culture with exposure to senior stakeholders State-of-the-art technology stack and hardware Opportunity to work on greenfield projects in a fast-moving environment More ❯

Senior Backend/Full Stack Ruby Developer – Profitable SaaS Scale-Up | Up to £85k + Excellent Benefits | Hybrid (London) I am working with a long term client of Opus, who is a profitable, investment-backed SaaS company with serious growth plans! We’re hiring Backend-focused Ruby Developers or Full Stack Ruby Developers with modern JavaScript experience (React More ❯

Senior Backend/Full Stack Ruby Developer – Profitable SaaS Scale-Up | Up to £85k + Excellent Benefits | Hybrid (London) I am working with a long term client of Opus, who is a profitable, investment-backed SaaS company with serious growth plans! We’re hiring Backend-focused Ruby Developers or Full Stack Ruby Developers with modern JavaScript experience (React More ❯

Our client is seeking an experienced Pricing Systems Manager and a Pricing Systems Developer to help them design, build, and maintain a new internal pricing platform. The ideal candidate will have strong technical expertise, a deep understanding of software development best practices, and experience working in a pricing or actuarial environment, ideally within the (re)insurance sector. If you … are a qualified developer with previous experience building pricing models, excellent working knowledge of SQL and .NET, then please apply for more details. More ❯

of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here ! Role overview As a fullstack cross-platform Senior Android Engineer, you'll play a pivotal role in developing Proton Pass using Jetpack Compose and Rust. You'll lead with an end-to-end ownership approach, ensuring timely More ❯

Up to £900 per day (via umbrella) London - Hybrid (2-3 days onsite) 12-Month Initial Contract - Immediate Start Join a front-office Electronic Trading Technology team at a Tier-1 Investment Bank, delivering next-generation algorithmic trading systems across More ❯

Imagine joining a fintech thats small enough for your code to make a dent yet backed by the kind of financial power that moves billions every day. This isnt another digital transformation project. Its about re-engineering how institutions handle More ❯

Dunbar Brown Group are excited to be working retained with our London based customer. We are looking for a Senior Front End Engineer to join a growing team for a business that is a market leader in their field. This person will drive their front end solution and will have 5-8 years experience working as Front End Engineer. More ❯

Dunbar Brown Group are excited to be working retained with our London based customer. We are looking for a Senior Front End Engineer to join a growing team for a business that is a market leader in their field. This person will drive their front end solution and will have 5-8 years experience working as Front End Engineer. More ❯

Join a top-tier London consultancy partnering with a major insurance client to develop innovative analytics and actuarial solutions. Were looking for an experienced backend software engineer to take a leading role in the evolution of a cutting-edge internal More ❯

We are looking for a talented and experienced Market Data Python Developer for one of our global Investment Banking Clients. In this role, you will play a key part in developing and maintaining cutting-edge quantitative tools and infrastructure used by our front-office traders and other teams. Requirements Responsibilities: Be a self-starter and plan/schedule your More ❯