Senior to Principal SoftwareEngineer | Mission-led Fintech - Hybrid London Here’s the thing. If you’re a Senior, Staff, or Principal SoftwareEngineer who wants serious impact without the ego-fest, this will probably speak to you. I’m partnering with a fast-growing fintech that helps millions manage how they earn, save, and spend … and data you can do something with. Proper ownership. Fast cycles, low ceremony, and room to shape architecture while mentoring others. What you’ll work with as a Staff SoftwareEngineer Stack: Python, TypeScript, React, Svelte, PostgreSQL, Snowflake, AWS. Setup: Cross-functional squads that care about outcomes, not ticket-ticking. You’ll improve scalability, evolve architecture, and still … days annual leave, enhanced parental benefits, private healthcare Sabbatical and volunteering leave Tax-efficient pension and flexible benefits schemes If you’ve been looking for a Principal or Senior SoftwareEngineer role in London where you can build for scale and feel good about the outcome, let’s talk. Drop me a message here or email your CV. More ❯
london (city of london), south east england, united kingdom
Austin Werner
Senior to Principal SoftwareEngineer | Mission-led Fintech - Hybrid London Here’s the thing. If you’re a Senior, Staff, or Principal SoftwareEngineer who wants serious impact without the ego-fest, this will probably speak to you. I’m partnering with a fast-growing fintech that helps millions manage how they earn, save, and spend … and data you can do something with. Proper ownership. Fast cycles, low ceremony, and room to shape architecture while mentoring others. What you’ll work with as a Staff SoftwareEngineer Stack: Python, TypeScript, React, Svelte, PostgreSQL, Snowflake, AWS. Setup: Cross-functional squads that care about outcomes, not ticket-ticking. You’ll improve scalability, evolve architecture, and still … days annual leave, enhanced parental benefits, private healthcare Sabbatical and volunteering leave Tax-efficient pension and flexible benefits schemes If you’ve been looking for a Principal or Senior SoftwareEngineer role in London where you can build for scale and feel good about the outcome, let’s talk. Drop me a message here or email your CV. More ❯
Senior SoftwareEngineer Node.js/AWS/React London (Hybrid, 3 days onsite) Are you the kind of Senior SoftwareEngineer who enjoys taking something fast-and-scrappy and turning it into something scalable, elegant, and genuinely robust? This is a chance for a Senior SoftwareEngineer to join a small, but ambitious tech … based in the London City Centre thats building products to make sense of massive data streams. Youll be part of a tight-knit team (around ten people total, five software engineers), working on a genuinely greenfield platform with a modern stack and zero legacy The focus now is on maturing the codebase re-architecting, refactoring, testing, and scaling. As … a Senior SoftwareEngineer, youll play a key role in helping the team evolve from early-stage speed to long-term stability, with the freedom to influence both product direction and engineering quality What youll be doing: Building and scaling a Node.js application that sits at the core of the product Designing and implementing new features for different More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
Senior SoftwareEngineer/Developer (Data) London/WFH to £115k Global-leading FinTech is seeking a Senior SoftwareEngineer to take ownership of a new team responsible for data focussed strategic enhancements on their core platform. The organisation is a pioneer in the field of cross-asset securities and derivatives post-trade processing technology and … have created ground-breaking, adaptable software that produces secure and scalable solutions for peak operational efficiency and optimum business performance for their clients. This is a great opportunity to accelerate your career alongside established business and technology leaders and deepen your finance experience. As a Senior SoftwareEngineer, you'll work on strategic initiatives to develop integration … ll join colleagues in the London office three days a week with flexibility to work from home the other two days. About you: You're a data centric, Senior SoftwareEngineer with a strong knowledge of modern software engineering best practices You have strong development experience with C#, C++ or Python You have advanced SQL database knowledge More ❯
Founding Product EngineerSoftwareEngineer | C# | .NET | React | TypeScript | FinTech | Start-Up | London We are seeking a talented SoftwareEngineer to join as a Founding Product Engineer at an early-stage fintech. You will work on building an instant, transparent, and affordable payments network. This role is perfect for a SoftwareEngineer … do: Work directly with leadership to design, build, and launch the core platform using C#, .NET, TypeScript, and React. Write high-quality, maintainable code daily as a hands-on Software Engineer. Build backend APIs, front-end web apps, and systems integrations using C# and .NET, with React and TypeScript on the front end. Leverage AI tools to design, debug … features faster, boosting productivity. Influence architectural decisions, including enterprise patterns such as microservices, DDD, and CQRS. Who you are: Experienced in C#, .NET,with 3+ years experience as a Software Engineer. Comfortable working across the full stack and adapting to new technologies quickly. Its preferred that candidates have worked with TypeScript/React however this role is Backend leaning. More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Client Server
C++ SoftwareEngineer/Developer (C++ Mac Extensions API) WFH/London to £80k Are you a C++ SoftwareEngineer with experience of developing and integrating Apple Mac Extensions and APIs? You could be progressing your career at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform … structures to extract key metadata which is then analysed by in-house algorithms and allows customers to detect hackers, malware, data leakage and other malicious activity. As a C++ SoftwareEngineer you will focus on enabling the core product, written in C/C++ for Windows and Linux to run on Apple Mac software, using the latest … of the time, meeting up with colleagues in the London office once or twice a month. About you: You have strong C++ development skills You have experience of integrating software with Apple Mac Extensions and APIs You have a good knowledge of Network Security and EDR/EDTR You have VPN client or security experience You're collaborative with More ❯
Central London, London, United Kingdom Hybrid / WFH Options
Client Server
SoftwareEngineer/Front End Developer (TypeScript React Native AI) London/WFH to £65k Want to work on intellectually and technically challenging AI systems at the cutting edge of what is possible, whilst learning and collaborating with an amazing team and enjoying flexible working and a range of other perks? You could be progressing your career as … a SoftwareEngineer at a well-established AI company acting as tech incubator within the World Economic Forum to tackle issues like climate change, AI, battery technology and other real world problems. As a SoftwareEngineer you'll design and develop new features and enhancements on the core product that uses Artificial Intelligence to harness knowledge … You have excellent communication and collaboration skills You are a passionate technologist, keep up to date with the latest innovations and learn new things You have solid knowledge of software engineering principles, Agile practices, CI/CD and ideally have experience within a cloud environment (AWS preferred) You are a bright, proactive individual and a strong problem solver with More ❯
Senior SoftwareEngineer/Developer (C# .Net) London onsite to £150k Are you an experienced C#, backend focussed SoftwareEngineer? You could be progressing your career in a senior, hands-on role at a global Asset Manager with c$3 million under management. As a Senior SoftwareEngineer within the trading engine team you … are collaborative with excellent communication and stakeholder management skills You are degree educated in Computer Science or similar technical discipline What's in it for you: As a Senior SoftwareEngineer/Developer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance … Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior SoftwareEngineer/Developer (C# .Net) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of More ❯
Senior SoftwareEngineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Senior SoftwareEngineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems that disrupt … real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Senior Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the team are … build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a Senior SoftwareEngineer: Tech agnostic but preferable experience working with Golang, Rust, C/C++ or Java. In-depth knowledge of distributed systems, building solutions at scale where performance, reliability More ❯
london (city of london), south east england, united kingdom
Burns Sheehan
Senior SoftwareEngineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Senior SoftwareEngineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems that disrupt … real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Senior Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the team are … build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a Senior SoftwareEngineer: Tech agnostic but preferable experience working with Golang, Rust, C/C++ or Java. In-depth knowledge of distributed systems, building solutions at scale where performance, reliability More ❯
Lead SoftwareEngineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £130,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Lead SoftwareEngineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems that disrupt … real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Lead Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the team are … build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a Lead SoftwareEngineer: Tech agnostic but preferable experience working with Golang, Rust, Java and/or C/C++. In-depth knowledge of distributed systems, building solutions at scale where More ❯
london (city of london), south east england, united kingdom
Burns Sheehan
Lead SoftwareEngineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £130,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Lead SoftwareEngineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems that disrupt … real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Lead Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the team are … build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a Lead SoftwareEngineer: Tech agnostic but preferable experience working with Golang, Rust, Java and/or C/C++. In-depth knowledge of distributed systems, building solutions at scale where More ❯
Senior .NET SoftwareEngineer - An esteemed investment management company is seeking an experienced Senior .NET SoftwareEngineer to lead the development of robust and scalable financial solutions. This high-impact role provides an opportunity to shape technology strategies and mentor junior engineers within a collaborative and growth-focused team. Responsibilities for the Senior .NET SoftwareEngineer: Drive the design, development, and deployment of complex software solutions using .NET technologies. Architect scalable systems to support evolving business requirements and ensure high performance. Take ownership of key projects, managing technical deliverables and ensuring deadlines are met. Provide technical leadership, guiding junior engineers and promoting best practices within the team. Collaborate with stakeholders to align … technical implementations with business objectives. Skills & Experience for the Senior .NET SoftwareEngineer: Extensive experience in .NET development, including expertise in C#, ASP.NET Core, and microservices architecture. Strong knowledge of database systems, including SQL and NoSQL technologies. Demonstrated success in delivering complex technical projects within a financial or investment setting. Experience with cloud platforms such as Azure, and More ❯
london (city of london), south east england, united kingdom
Miller Maxwell Ltd
Senior .NET SoftwareEngineer - An esteemed investment management company is seeking an experienced Senior .NET SoftwareEngineer to lead the development of robust and scalable financial solutions. This high-impact role provides an opportunity to shape technology strategies and mentor junior engineers within a collaborative and growth-focused team. Responsibilities for the Senior .NET SoftwareEngineer: Drive the design, development, and deployment of complex software solutions using .NET technologies. Architect scalable systems to support evolving business requirements and ensure high performance. Take ownership of key projects, managing technical deliverables and ensuring deadlines are met. Provide technical leadership, guiding junior engineers and promoting best practices within the team. Collaborate with stakeholders to align … technical implementations with business objectives. Skills & Experience for the Senior .NET SoftwareEngineer: Extensive experience in .NET development, including expertise in C#, ASP.NET Core, and microservices architecture. Strong knowledge of database systems, including SQL and NoSQL technologies. Demonstrated success in delivering complex technical projects within a financial or investment setting. Experience with cloud platforms such as Azure, and More ❯
City Of London, England, United Kingdom Hybrid / WFH Options
Kioni Talent
Opportunity & Requirement Summary 📛 Role | Python SoftwareEngineer 🔵 Company | Growing SaaS Software Provider 📏 Size | 15–20 employees 📍 Location | London (Hybrid – 3 days per week in the office) 💰 Offer | £60,000 – £90,000 + share options + benefits Detailed Overview Kioni Talent is partnering with an innovative SaaS company that’s helping businesses streamline complex workflows through their intelligent … software platform. They’re now looking for a Python SoftwareEngineer to join their close-knit team and play a key role in building and scaling the backend that powers their core product. You’ll be joining a collaborative engineering team of experienced developers, product thinkers, and problem-solvers — all passionate about writing clean, scalable code and … enjoy solving interesting technical problems in a modern SaaS environment. We’d love to hear from you. 📩 Apply now to learn more about the company and this opportunity! (Python Engineer, Python Developer, Backend Developer, Software Developer, SoftwareEngineer, Django Developer, Django, FastAPI, Flask, AWS, SaaS, REST API, Cloud, CI/CD, Start-up, London, Hybrid More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Kioni Talent
Opportunity & Requirement Summary 📛 Role | Python SoftwareEngineer 🔵 Company | Growing SaaS Software Provider 📏 Size | 15–20 employees 📍 Location | London (Hybrid – 3 days per week in the office) 💰 Offer | £60,000 – £90,000 + share options + benefits Detailed Overview Kioni Talent is partnering with an innovative SaaS company that’s helping businesses streamline complex workflows through their intelligent … software platform. They’re now looking for a Python SoftwareEngineer to join their close-knit team and play a key role in building and scaling the backend that powers their core product. You’ll be joining a collaborative engineering team of experienced developers, product thinkers, and problem-solvers — all passionate about writing clean, scalable code and … enjoy solving interesting technical problems in a modern SaaS environment. We’d love to hear from you. 📩 Apply now to learn more about the company and this opportunity! (Python Engineer, Python Developer, Backend Developer, Software Developer, SoftwareEngineer, Django Developer, Django, FastAPI, Flask, AWS, SaaS, REST API, Cloud, CI/CD, Start-up, London, Hybrid More ❯
City Of London, England, United Kingdom Hybrid / WFH Options
Harrington Starr
SoftwareEngineer C#, .NET Core, NUnit, Postgres, AWS, Azure, Kubernetes, Docker. City of London, United Kingdom Perm Role: £65,000 - £80,000 Harrington Starr has partnered with a Global Financial Technology company, and they are looking to hire a Mid - Senior C#, .Net SoftwareEngineer, with experience working with highly scalable and performant systems. This is … unrestricted right to work in the UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a Mid - Senior SoftwareEngineer, with strong C#, .Net experience, having a direct impact from the get-go! For any additional questions, please contact me via LinkedIn or through email - ollie.bluck@harringtonstarr.com. More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Harrington Starr
Senior SoftwareEngineer Key Technologies: C#, .NET, React, AWS, Docker, Kubernetes City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET SoftwareEngineer to join their growing team! This role provides the perfect opportunity to launch … skills. Unrestricted right to work in the UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a Senior SoftwareEngineer, with expert C#, .NET experience and commercial use of React having a direct impact from the get-go. Apply below and if you have any questions, please More ❯
SoftwareEngineer - 3D Tooling London £50,000 - £60,000 As a SoftwareEngineer – 3D Tooling, you’ll be central to transforming complex real-time data into intuitive tools that bridge computational models and physical phenomena. Your work will help drive innovation in 3D interaction and projection mapping. What You’ll Be Doing Implement real-time projection … techniques on dynamic surfaces and particle systems. Develop internal 3D tooling for non-technical users, prioritising usability and rapid iteration. Integrate software with hardware control systems, building computational pipelines linking authoring tools to physical display platforms. Collaborate closely with cross-functional teams within software, electronics, and product, to transition prototype tools into customer-facing systems. What's required … for this SoftwareEngineer - 3D Tooling opportunity? Strong experience programming in C++. Proficient in 3D graphics with OpenGL and OpenCL. Hands-on experience in real-time image processing, ideally with OpenCV. Understanding of geometric tracking, projection mapping, and real-time graphics optimisation. Understanding of 3D geometry, algorithms and system dynamics If you're skilled with 3D Graphics and More ❯
london (city of london), south east england, united kingdom
IC Resources
SoftwareEngineer - 3D Tooling London £50,000 - £60,000 As a SoftwareEngineer – 3D Tooling, you’ll be central to transforming complex real-time data into intuitive tools that bridge computational models and physical phenomena. Your work will help drive innovation in 3D interaction and projection mapping. What You’ll Be Doing Implement real-time projection … techniques on dynamic surfaces and particle systems. Develop internal 3D tooling for non-technical users, prioritising usability and rapid iteration. Integrate software with hardware control systems, building computational pipelines linking authoring tools to physical display platforms. Collaborate closely with cross-functional teams within software, electronics, and product, to transition prototype tools into customer-facing systems. What's required … for this SoftwareEngineer - 3D Tooling opportunity? Strong experience programming in C++. Proficient in 3D graphics with OpenGL and OpenCL. Hands-on experience in real-time image processing, ideally with OpenCV. Understanding of geometric tracking, projection mapping, and real-time graphics optimisation. Understanding of 3D geometry, algorithms and system dynamics If you're skilled with 3D Graphics and More ❯
Systems SoftwareEngineer (Python) Are you a top-tier SoftwareEngineer with a passion for high-performance systems and a knack for solving complex infrastructure challenges? We are seeking an elite developer to join a rapidly growing, highly respected HFT company that operates at the cutting edge of its industry. This isn't a typical infrastructure … used to build robust, high-availability solutions that support their technology ecosystem. What We're Looking For: We are specifically targeting engineers who possess a world-class blend of software development and systems knowledge: Python is essential, including building production-grade, highly reliable systems. A comprehensive understanding of the Linux operating system, including its internals, performance tuning, and low … and performance bonuses. Office Perks including free daily meals, snacks, drinks, commuter benefits, a fitness stipend or on-site gym, and relocation assistance. If you are an experienced Systems SoftwareEngineer ready for your next truly challenging role and believe you meet the standard of the world's most selective technology companies, apply today Randstad Technologies Ltd is More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Oliver Bernard
Applied AI SoftwareEngineer - Python, Fast API, AWS, LLMs OB are partnered with a high-growth, B2B SaaS start-up who are looking to hire a highly skilled Applied AI Engineer to their Product Engineering team, where you'll pioneer the development of complex applications leveraging GenAI models. This role won't be a role focused on … building and training models from scratch, instead you'll leverage the latest tools in AI to build software that helps solve business problems, adds value to the product and shape the businesses AI roadmap. Applied AI SoftwareEngineer - Python, Fast API, AWS, LLMs Key skills and experience: 5+ years of experience, ideally working in high-growth start … top ranked University Base salary of £80k-£110k Exceptional equity and benefits package Hybrid working, with 2-3 days a week required in a Central London office Applied AI SoftwareEngineer - Python, Fast API, AWS, LLMs More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Ashdown Group
A well-established business is looking for an accomplished SoftwareEngineer with expert Python skills to join its organisation. Please note, this role is Outside IR35. The company embraces hybrid and flexible working so you will be able to work fully remotely, with occasional visits (perhaps once per month) to the office in London. Web, software, and … AI-enabled technology are fundamental to the success of the business so you must have proven experience of developing great software in Python and an interest in adopting cutting-edge technology. In order to be suitable for this Lead SoftwareEngineer role you must be an accomplished developer with a passion for technology and desire to mentor … role of significant responsibility, you will be both a Lead Developer and guide 2 in-house developers and an offshore team. You will act as a technical authority on software written in Python, lead architectural discussions, code, ensure technical quality and deliver complex software projects. You will also partner with key stakeholders to drive forward technological innovation and More ❯
Central London, London, United Kingdom Hybrid / WFH Options
Inspire People
We are seeking a highly skilled SoftwareEngineer with strong JavaScript/React/Typescript/Node for application development to join a dynamic development team within a Central Government Dept. As a SoftwareEngineer, you will play a pivotal role in designing, developing and maintaining web applications with a focus on React and AWS Technologies. … min. 2 days a week in London. Candidates must be eligible for SC clearance (typically min. of 3 of last 5 years resident in the UK). As a SoftwareEngineer, you will have relevant experience in: ? JavaScript, React, Node.js and TypeScript. ? Strong experience in writing reusable, testable components, within React. ? Proficiency in modern JavaScript (ES6) and JSX … on experience with PostgreSQL. ? Familiarity with version control using Git. ? Experience of continuous integration and continuous delivery using Github actions. ? Experience of working in an Agile environment. ? Knowledge of software engineering practices and design patterns. ? Ability to collaborate with cross functional teams, including individuals from various disciplines to deliver high quality software. ? Excellent communication skills, both written and verbal More ❯
connect, transact, and succeed. With a diverse and dynamic team, we’re committed to driving impact, fostering collaboration, and shaping the future of global trade. The role: As a SoftwareEngineer you will solve challenges and add value for our customers through your skills in technology. As a softwareengineer, you will be delivering new features … and are able to work with Engineering Managers and Product Managers to define and document architecture for new areas of the system, aligning to RedCloud’s architecture strategies. The SoftwareEngineer is a consistent high performer delivering value into production regularly, consistently and with high quality. They are an idea contributor and innovator adding new value to the … team and the product. What you’ll be doing: Deliver Features and bug fixes in our software platforms for our customers. Resolve Bugs Resolve production Outages/issues Estimate Features/Bugs Architecture & Design Refine feature requirements Carry out code reviews Keeping pace with Technology What you’ll need: At least 3+ years of experience in software engineering More ❯
