Central London / West End, London, United Kingdom Hybrid / WFH Options
Oho Group Ltd
Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and shape the backbone of our platform. What You’ll Do More ❯
We are looking to speak with Senior Software Engineers for our client, a growing SaaS company. Design and Architect scalable, reliable, and high-performance services and APIs. Write clean, optimised, and maintainable code primarily in TypeScript within an AWS cloud environment. Lead technical reviews and drive best engineering practices across the team (testing, CI/CD, documentation). 5+ … years of professional experience in software development, with 2+ years in a Senior capacity within a fast-paced SaaS or tech environment. More ❯
Java/Kotlin Engineer A fast-growing Fintech company based in London, are on the lookout for talented Kotlin Engineers to join their high-impact engineering team. You don t need to be a Kotlin expert yet if you ve worked in any JVM language (Java, Scala, Clojure, etc.) and are keen to learn Kotlin, we d love to … focused financial solutions. Contribute to architectural discussions and help shape our platform as we scale. Strong experience with Java, Scala, Kotlin, or another JVM language. Solid understanding of modern software engineering principles from CI/CD to cloud-native development (AWS, GCP, or Azure). Hybrid working (2 days in London office, 3 days from home), can also work More ❯
freely, and stay focused on our mission to build cutting-edge cryptographic, blockchain, and mobile-first privacy technology. About the Role We’re looking for a Senior React Native Engineer to play a key role in building, improving, and scaling our encrypted email app, C.Email. You’ll work closely with our CTO, cryptography specialist, and engineers to deliver a … on integration for data backup and key management systems. Participate in daily stand-ups and code reviews, sharing best practices and ideas. Qualifications 4-6 year’s experience in software engineering; strong background in React Native and TypeScript. Experience setting up automated tests from scratch — unit, component, and user-simulation tests. Strong understanding of mobile-first architecture (local data … React Native and problem-solving. Practical coding exercise - we’ll send you a task to complete during a live coding interview with our CTO and one of our Senior Software Engineers. Final Stage Interview - you’ll get to meet with our CEO and founder and explore more about the role with the company. More ❯
freely, and stay focused on our mission to build cutting-edge cryptographic, blockchain, and mobile-first privacy technology. About the Role We’re looking for a Senior React Native Engineer to play a key role in building, improving, and scaling our encrypted email app, C.Email. You’ll work closely with our CTO, cryptography specialist, and engineers to deliver a … on integration for data backup and key management systems. Participate in daily stand-ups and code reviews, sharing best practices and ideas. Qualifications 4-6 year’s experience in software engineering; strong background in React Native and TypeScript. Experience setting up automated tests from scratch — unit, component, and user-simulation tests. Strong understanding of mobile-first architecture (local data … React Native and problem-solving. Practical coding exercise - we’ll send you a task to complete during a live coding interview with our CTO and one of our Senior Software Engineers. Final Stage Interview - you’ll get to meet with our CEO and founder and explore more about the role with the company. More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Hargreaves Lansdown
Be part of HL's future. Be part of the future of investing. Shape it with us. What You'll Be Doing Building and deploying scalable, secure, and compliant software at pace. Integrating HL web and mobile apps with existing and new systems to deliver a seamless client experience across a range of products and services. Delivering value iteratively … HL's mission and client value. Championing a culture of continuous learning, cross-functional collaboration, and inclusivity with a growth mindset. About You 8-10 years of experience in software engineering , with a strong track record of delivering complex, user-facing applications in regulated, large-scale environments , ideally within Investment, Asset, or Wealth Management . Deep expertise in React More ❯
Change Software Forever QA slows the world down. Flaky tests kill trust, stall releases, and bleed engineering velocity. Duku AI is ending that era. We’re building autonomous agents that think like engineers : they run every critical user journey, catch failures before users do, and self-heal as the codebase evolves. Real AI teammates, not test scripts that break … and grew Deliveroo from zero to hypergrowth. We know what elite execution looks like and we’re hunting for one more builder to help us rewrite the rules of software quality. What You’ll Do Ship fast, learn faster : We deploy daily, not monthly Talk to users, shape the roadmap : Sit in the trenches with founders on calls that … for mindset, not credentials. That said, you might have: Shipped AI features in prod Built something from 0 to 1 Thrived in chaos with high ownership Why This Matters Software is accelerating. QA hasn’t kept up. Autonomous testing is inevitable, and we’re building it. Five years from now, every high-velocity team will rely on AI agents More ❯
Change Software Forever QA slows the world down. Flaky tests kill trust, stall releases, and bleed engineering velocity. Duku AI is ending that era. We’re building autonomous agents that think like engineers: they run every critical user journey, catch failures before users do, and self-heal as the codebase evolves. Real AI teammates, not test scripts that break … and grew Deliveroo from zero to hypergrowth. We know what elite execution looks like and we’re hunting for one more builder to help us rewrite the rules of software quality. What You’ll Do Ship fast, learn faster : We deploy daily, not monthly Talk to users, shape the roadmap : Sit in the trenches with founders on calls that … for mindset, not credentials. That said, you might have: Shipped AI features in prod Built something from 0 to 1 Thrived in chaos with high ownership Why This Matters Software is accelerating. QA hasn’t kept up. Autonomous testing is inevitable, and we’re building it. Five years from now, every high-velocity team will rely on AI agents More ❯
financial markets. With a legacy tracing back almost 100 years, they have established themselves as a leading player, executing millions of trades and clearing contracts annually. Position Overview: Senior Software Developer up to £130,000 basic + Bonus As a Senior Software Developer within this market-leading finance firm, you will play a pivotal role in the development More ❯
financial markets. With a legacy tracing back almost 100 years, they have established themselves as a leading player, executing millions of trades and clearing contracts annually. Position Overview: Senior Software Developer up to £130,000 basic + Bonus As a Senior Software Developer within this market-leading finance firm, you will play a pivotal role in the development More ❯
london (city of london), south east england, united kingdom
Harrington Starr
financial markets. With a legacy tracing back almost 100 years, they have established themselves as a leading player, executing millions of trades and clearing contracts annually. Position Overview: Senior Software Developer up to £130,000 basic + Bonus As a Senior Software Developer within this market-leading finance firm, you will play a pivotal role in the development More ❯
the future from scratch, channelling our start-up mentality every step of the way - meaning you'll have the opportunity to make a real impact. As a Front-End Engineer at JPMorgan Chase within the International Consumer Bank, you will be a part of a flat-structure organization. Your responsibilities are to deliver end-to-end cutting-edge solutions More ❯
On a personal level, we are a close-knit team of 30 talented individuals, who thrive on collaboration and enjoy one another's company. About the Role Join the Software Engineering team, where you will be developing and enhancing our investment reporting platform, Serpentine - a web application written using Python and Django. Serpentine tackles the challenges of managing large … client websites, as well as publishing complex investment reports. We are at a pivotal stage in the development of our business, with plans to develop a new suite of software products using a microservices approach. This is an exciting opportunity to be involved with new software projects, from the research and planning stage through to final deployment. You … will Become familiar with all facets of our software's backend, with the opportunity to work on all layers of the application, including AWS infrastructure. Architect and implement new software solutions, contributing towards the overall structural design and engineering best practice. Collaborate closely with our design, front-end, and client-facing teams. Be given the opportunity to take More ❯
We are looking to speak with Senior Software Engineers for our client, a growing SaaS company. Key Responsibilities: Design and Architect scalable, reliable, and high-performance services and APIs. Write clean, optimised, and maintainable code primarily in TypeScript within an AWS cloud environment. Lead technical reviews and drive best engineering practices across the team (testing, CI/CD, documentation … . Collaborate cross-functionally with Product Managers and Design to translate business requirements into technical solutions. Key Requirements: 5+ years of professional experience in software development, with 2+ years in a Senior capacity within a fast-paced SaaS or tech environment. Proven experience designing and deploying applications in a microservices/distributed architecture. More ❯
We are looking to speak with Senior Software Engineers for our client, a growing SaaS company. Key Responsibilities: Design and Architect scalable, reliable, and high-performance services and APIs. Write clean, optimised, and maintainable code primarily in TypeScript within an AWS cloud environment. Lead technical reviews and drive best engineering practices across the team (testing, CI/CD, documentation … . Collaborate cross-functionally with Product Managers and Design to translate business requirements into technical solutions. Key Requirements: 5+ years of professional experience in software development, with 2+ years in a Senior capacity within a fast-paced SaaS or tech environment. Proven experience designing and deploying applications in a microservices/distributed architecture. More ❯
We are looking to speak with Senior Software Engineers for our client, a growing SaaS company. Key Responsibilities: Design and Architect scalable, reliable, and high-performance services and APIs. Write clean, optimised, and maintainable code primarily in TypeScript within an AWS cloud environment. Lead technical reviews and drive best engineering practices across the team (testing, CI/CD, documentation … . Collaborate cross-functionally with Product Managers and Design to translate business requirements into technical solutions. Key Requirements: 5+ years of professional experience in software development, with 2+ years in a Senior capacity within a fast-paced SaaS or tech environment. Proven experience designing and deploying applications in a microservices/distributed architecture. More ❯
london (city of london), south east england, united kingdom
Ad Idem Consulting
We are looking to speak with Senior Software Engineers for our client, a growing SaaS company. Key Responsibilities: Design and Architect scalable, reliable, and high-performance services and APIs. Write clean, optimised, and maintainable code primarily in TypeScript within an AWS cloud environment. Lead technical reviews and drive best engineering practices across the team (testing, CI/CD, documentation … . Collaborate cross-functionally with Product Managers and Design to translate business requirements into technical solutions. Key Requirements: 5+ years of professional experience in software development, with 2+ years in a Senior capacity within a fast-paced SaaS or tech environment. Proven experience designing and deploying applications in a microservices/distributed architecture. More ❯
Senior Product Engineer (Mobile - React Native) | AI SaaS Company | London A well-funded AI SaaS company is hiring for a Senior Product Engineer (Mobile) to take full ownership of its core mobile platform. This company is building an innovative product that delivers real-world insights to a growing global client base and is supported by a world-class More ❯
Senior Product Engineer (Mobile - React Native) | AI SaaS Company | London A well-funded AI SaaS company is hiring for a Senior Product Engineer (Mobile) to take full ownership of its core mobile platform. This company is building an innovative product that delivers real-world insights to a growing global client base and is supported by a world-class More ❯
Senior Product Engineer (Mobile - React Native) | AI SaaS Company | London A well-funded AI SaaS company is hiring for a Senior Product Engineer (Mobile) to take full ownership of its core mobile platform. This company is building an innovative product that delivers real-world insights to a growing global client base and is supported by a world-class More ❯
london (city of london), south east england, united kingdom
Twelve
Senior Product Engineer (Mobile - React Native) | AI SaaS Company | London A well-funded AI SaaS company is hiring for a Senior Product Engineer (Mobile) to take full ownership of its core mobile platform. This company is building an innovative product that delivers real-world insights to a growing global client base and is supported by a world-class More ❯
Duration: 6 months Job Type: Hybrid - office based 2 days per week Job Description: Design, implement, and optimise live streaming capabilities into existing software-based video pipeline Leverage hardware acceleration to develop high-performance, low-latency video capture, processing, AI inference, visualization and streaming software Work as part of a multidisciplinary team to develop robust and secure-by … design software for a medical device Maintain a high level of quality and reliability in submitted code and participate in team code reviews Must Haves Expertise on WebRTC live video streaming development Expertise on software video pipelines (e.g., GStreamer and/or FFmpeg) Excellent C++ development skills with C++11 or higher, multi-threading, inter-process communication and performance More ❯
