526 to 550 of 853 Software Engineering Jobs in the City of London

Senior Software Engineer (Python/AWS) 📍 Location: London or Manchester 💼 Employment Type: Full-time, Permanent About the Role We’re looking for a Senior Software Engineer with deep experience in Python and AWS to help design, build, and scale distributed, data-driven Ad-Tech systems. You’ll lead the delivery of cross-service features within a modern cloud … platform, making pragmatic architectural choices and setting high standards for engineering quality, reliability, and performance. You’ll play a key role in shaping technical direction, mentoring engineers, and ensuring the systems you build are secure, observable, and resilient. Key Responsibilities Lead complex delivery: Drive the end-to-end design and implementation of Python-based microservices and cloud-native solutions … hosted on AWS. Architect and optimise systems: Define service boundaries, data ownership, and failure-recovery patterns for scalable, high-availability systems. Raise engineering quality: Champion best practices for testing, observability, and security. Review critical PRs and guide technical decisions across the team. Operate and improve production systems: Monitor performance, reliability, and cost efficiency. Lead incident response and drive continuous More ❯

Senior Full-Stack Software Engineer -remote -up to £120K An early-stage B2B SaaS company seeks a Lead Software Engineer to join their UK based team. The role requires significant experience across Full-stack Engineering in addition to experience leading software engineers. The company is an AI-first B2B business that transforms the way businesses operate. … against this mission. The team come from some of the UK’s most exciting technology scale-ups and are well placed to execute. The role requires significant Full-Stack Engineering experience, including the backend, frontend and platform. It’s responsible for leading other engineers while remaining fully hands-on as an engineer. It will not suit someone who has … with multiple languages and has an open mind to finding the best technologies to solve their customers’ problems. About you : We’re looking for a hands-on Full-Stack Software Engineer who has experience in early-stage and scale-up technology companies. You must thrive in an environment where you work closely with customers and relish in receiving their More ❯

Senior Full-Stack Software Engineer -remote -up to £120K An early-stage B2B SaaS company seeks a Lead Software Engineer to join their UK based team. The role requires significant experience across Full-stack Engineering in addition to experience leading software engineers. The company is an AI-first B2B business that transforms the way businesses operate. … against this mission. The team come from some of the UK’s most exciting technology scale-ups and are well placed to execute. The role requires significant Full-Stack Engineering experience, including the backend, frontend and platform. It’s responsible for leading other engineers while remaining fully hands-on as an engineer. It will not suit someone who has … with multiple languages and has an open mind to finding the best technologies to solve their customers’ problems. About you : We’re looking for a hands-on Full-Stack Software Engineer who has experience in early-stage and scale-up technology companies. You must thrive in an environment where you work closely with customers and relish in receiving their More ❯

Senior Software Engineer - Gen AI 1 day a week in Central London, hybrid working Salaries paying £90k-£125k + annual bonus Oliver Bernard have partnered with a rapidly growing FinTech in London who are building the next generation of AI based financial products. We are looking for Senior Software Engineers who have commercial experience with GenerativeAI and LLM … LLMs, Vector Databases. The client are looking for someone to start as soon as possible and they are moving quickly with interviews! Please apply now for more information! Senior Software Engineer - Gen AI More ❯

Java Software Engineer - Java, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Java Software Engineer role:- You will be joining a fast-growing, research-driven company building an artificial intelligence using novel machine learning techniques. My client is revolutionising their industry with … a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some of the best known technology companies today. You will have a great opportunity to work with a variety of languages, frameworks and … tools. Applicants will need a background in Java and/or Python with a focus on Server side technologies. Core skills for the Java Software Engineer: 5yrs in a commercial Development role Solid experience of Java Good knowledge of Cloud Technologies (AWS) and Microservices Strong database knowledge (SQL and NoSQL) Degree in Computer Science, Engineering, or a related More ❯

Java Software Engineer - Java, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Java Software Engineer role:- You will be joining a fast-growing, research-driven company building an artificial intelligence using novel machine learning techniques. My client is revolutionising their industry with … a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some of the best known technology companies today. You will have a great opportunity to work with a variety of languages, frameworks and … tools. Applicants will need a background in Java and/or Python with a focus on Server side technologies. Core skills for the Java Software Engineer: 5yrs in a commercial Development role Solid experience of Java Good knowledge of Cloud Technologies (AWS) and Microservices Strong database knowledge (SQL and NoSQL) Degree in Computer Science, Engineering, or a related More ❯

Senior Software Engineer - London - £120k Please note - this role will require you to work from the London based office three days per week. You must have the unrestricted right to work in the UK to be eligible for this role - this organisation is not able to offer sponsorship. Are you passionate about building cutting-edge technology solutions that power More ❯

Circuit Mind we believe that this is wrong and we are on a mission to fix it, triggering the future of hardware design. We are creating an entirely new software engine for circuit boards, that takes as inputs the requirements of a circuit board and automatically outputs a complete design, ready for manufacture. As a Lead Software Engineer … ll create simple and elegant solutions to difficult technical problems that the world has not solved before. You will work in close collaboration with a highly-functioning team of software, electronics, algorithm engineers and product managers. Responsibilities Collaborate with the product team and in-house hardware engineers to understand the problems of hardware engineering teams. Plan, design, develop … test and iterate on the software solutions to those problems, accounting for functional and non-functional requirements. Co-design, pair on, and review the development work of other lead software developers. You’ll work on the entire company's backend code base: data models, algorithms, data pipelines, infrastructure, APIs, complex database queries, ML models. Learn, use, and improve More ❯

Circuit Mind we believe that this is wrong and we are on a mission to fix it, triggering the future of hardware design. We are creating an entirely new software engine for circuit boards, that takes as inputs the requirements of a circuit board and automatically outputs a complete design, ready for manufacture. As a Lead Software Engineer … ll create simple and elegant solutions to difficult technical problems that the world has not solved before. You will work in close collaboration with a highly-functioning team of software, electronics, algorithm engineers and product managers. Responsibilities Collaborate with the product team and in-house hardware engineers to understand the problems of hardware engineering teams. Plan, design, develop … test and iterate on the software solutions to those problems, accounting for functional and non-functional requirements. Co-design, pair on, and review the development work of other lead software developers. You’ll work on the entire company's backend code base: data models, algorithms, data pipelines, infrastructure, APIs, complex database queries, ML models. Learn, use, and improve More ❯

Credit & Rates Trading) Location: London Salary: 120K-140K + up to 25% Bonus + benefits About the Company This global financial technology firm is renowned for combining cutting-edge engineering with a market-leading trading platform that powers electronic trading across Credit and Rates. Their flagship product is used daily by thousands of brokers and traders worldwide and is … including New York) to ensure performance, scalability, and resilience in a high-volume, real-time environment. This is a hands-on leadership role where youll mentor other engineers, promote engineering excellence, and act as a point of contact for senior stakeholders. Projects Youll Work On Scaling a real-time trading platform: Handle vast growth in electronic trading volumes, ensuring … throughput and ultra-low latency. Resilience & recoverability: Build fault-tolerant services and recovery systems for mission-critical trading operations. Automation & testability: Drive forward engineering practices, embedding automation to ensure reliability and speed of deployment. Cross-market solutions: Exposure to multiple asset classes, building technology that underpins Credit, Rates, and wider electronic markets. Global impact engineering: Collaborate with international More ❯

Credit & Rates Trading) Location: London Salary: £120K-£140K + up to 25% Bonus + benefits About the Company This global financial technology firm is renowned for combining cutting-edge engineering with a market-leading trading platform that powers electronic trading across Credit and Rates. Their flagship product is used daily by thousands of brokers and traders worldwide and is … New York) to ensure performance, scalability, and resilience in a high-volume, real-time environment. This is a hands-on leadership role where you’ll mentor other engineers, promote engineering excellence, and act as a point of contact for senior stakeholders. Projects You’ll Work On Scaling a real-time trading platform: Handle vast growth in electronic trading volumes … ensuring throughput and ultra-low latency. Resilience & recoverability: Build fault-tolerant services and recovery systems for mission-critical trading operations. Automation & testability: Drive forward engineering practices, embedding automation to ensure reliability and speed of deployment. Cross-market solutions: Exposure to multiple asset classes, building technology that underpins Credit, Rates, and wider electronic markets. Global impact engineering: Collaborate with More ❯

At a Glance Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring senior software engineers who are comfortable contributing across all layers of the application and developing features end to end. Details: Role : Senior Software Engineer - Full Stack Location : London, UK (Hybrid, In-Person 4 days a week … companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A senior software engineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key responsibilities include: Improving … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 4+ years of experience as a software engineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You have More ❯

At a Glance Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring senior software engineers who are comfortable contributing across all layers of the application and developing features end to end. Details: Role : Senior Software Engineer - Full Stack Location : London, UK (Hybrid, In-Person 4 days a week … companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A senior software engineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key responsibilities include: Improving … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 4+ years of experience as a software engineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You have More ❯

Forward Deployed Software Engineer London Location: London, UK (Hybrid) Salary: 80,000-100,000 Start Date: Flexible A high-growth technology company is seeking a mission-driven Forward Deployed Software Engineer (FDE) to join its London team. This is a unique opportunity for engineers with strong data and product instincts who want to build impactful solutions that drive … a fast-paced, startup-like environment Hybrid working model The Company This organisation partners with ambitious enterprises and government agencies to solve their most critical challenges. It builds custom software products that integrate enterprise data into operator-focused workflows, enabling transformative outcomes at speed. The company operates more like a product startup than a traditional consultancy - valuing velocity, ingenuity … and grit. The Role As a Forward Deployed Engineer, youll work directly with stakeholders to understand their most valuable challenges and build operationalised software solutions that drive measurable impact. Youll be embedded with clients, iterating quickly, and delivering end-to-end applications that reshape how organisations operate. This is a hands-on engineering role with a strong focus More ❯

Principal Software Engineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior Software Engineer to join its high-performing engineering organisation in London. This is an opportunity to contribute to a platform designed to improve finance globally — with real impact at scale. The company … stability across the world — all via a modern, mobile-first platform. Backed by leading venture capital and impact investors, the organisation is entering a new phase of growth, with engineering at the core. The Opportunity As a Senior Engineer, you will play a key role in designing and delivering scalable, reliable systems that handle significant volumes of real-time … tangible value. Contribute to technical strategy , support platform scalability, and lead by example through code reviews and mentoring. Maintain a user-centred mindset , constantly measuring and iterating on how engineering decisions translate into product value. Technical Environment: Languages & Frameworks : Python, TypeScript, React, Svelte Infrastructure & Tools : AWS, PostgreSQL, Snowflake, CI/CD pipelines Ways of Working : Agile squads, continuous delivery More ❯

Principal Software Engineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior Software Engineer to join its high-performing engineering organisation in London. This is an opportunity to contribute to a platform designed to improve finance globally — with real impact at scale. The company … stability across the world — all via a modern, mobile-first platform. Backed by leading venture capital and impact investors, the organisation is entering a new phase of growth, with engineering at the core. The Opportunity As a Senior Engineer, you will play a key role in designing and delivering scalable, reliable systems that handle significant volumes of real-time … tangible value. Contribute to technical strategy , support platform scalability, and lead by example through code reviews and mentoring. Maintain a user-centred mindset , constantly measuring and iterating on how engineering decisions translate into product value. Technical Environment: Languages & Frameworks : Python, TypeScript, React, Svelte Infrastructure & Tools : AWS, PostgreSQL, Snowflake, CI/CD pipelines Ways of Working : Agile squads, continuous delivery More ❯

Java Engineer – 6-Month Contract – Hybrid (2 days on site, London) - Day Rate: Up to £650 (Inside IR35) Join a high-performing engineering team working on large-scale, high-availability systems used by millions. This role offers the chance to build and enhance complex backend services in a modern, cloud-native environment. What you’ll be doing: Designing and … experience with Java, Spring Boot, and microservice architecture. Proven background working in cloud environments (ideally AWS). Familiarity with CI/CD pipelines and automation tools. Solid grasp of software testing, TDD, and Agile methodologies. Good communication skills and the ability to work collaboratively in a hybrid setup. Contract Details: Location: London (2 days per week on site) Duration … months, strong potential for extension Rate: Up to £650 per day (Inside IR35) If you’re an experienced Java Engineer keen to join a modern engineering environment and work on systems that operate at scale, please get in touch for more information. More ❯

Forward Deployed Software Engineer – London Location: London, UK (Hybrid) Salary: £80,000-£100,000 Start Date: Flexible A high-growth technology company is seeking a mission-driven Forward Deployed Software Engineer (FDE) to join its London team. This is a unique opportunity for engineers with strong data and product instincts who want to build impactful solutions that drive … a fast-paced, startup-like environment Hybrid working model The Company This organisation partners with ambitious enterprises and government agencies to solve their most critical challenges. It builds custom software products that integrate enterprise data into operator-focused workflows, enabling transformative outcomes at speed. The company operates more like a product startup than a traditional consultancy - valuing velocity, ingenuity … and grit. The Role As a Forward Deployed Engineer, you’ll work directly with stakeholders to understand their most valuable challenges and build operationalised software solutions that drive measurable impact. You’ll be embedded with clients, iterating quickly, and delivering end-to-end applications that reshape how organisations operate. This is a hands-on engineering role with a More ❯

Experis Software Engineer Perm Salary DOE London, Bristol (Hybrid) **DV or SC Clearance Essential** Our client, a rapidly growing deep-tech consultancy, urgently require an experienced Software Engineer to join their team on a permanent basis. In order to be successful, you will have the following experience: Experienced Software Developer/Engineer Strong background within Python, C++ … C#, SQL, TypeScript Experience of Palantir technology is a bonus DV or SC Clearance is essential Within this role, you will be responsible for: Delivering strategic advisory, engineering delivery, and enablement services to Government and commercial clients. Solve user problems by drawing source and captured data into a single foundational data model and building operational workflows that materially change More ❯

Role: Software Engineer Salary: £50,000 - £65,000 - DOE Location: London (Hybrid) Type: Permanent About the job: Are you an experienced Software Engineer who loves variety and still loves learning new things, while connecting with new people along the way? This role could be for you! This role requires a software engineer for the development and ongoing … support of the software applications for the internal systems and the businesses clients. You will be principally working in a team of 12 working on a single product across the full development stack and will have the opportunity to contribute towards all aspects of the project. Ideally you will have between 2-4 years of experience and be a … keen learner with ambition to take your career to the next level. Software Engineer required skills: .NET (ASP.NET) C# HTML, CSS JavaScript/TypeScript SQL Angular or React is preferred You must be UK based & have full right to work in the UK. If this role matches your professional background or you think you’d be a strong match More ❯

Role: Software Engineer Salary: £50,000 - £65,000 - DOE Location: London (Hybrid) Type: Permanent About the job: Are you an experienced Software Engineer who loves variety and still loves learning new things, while connecting with new people along the way? This role could be for you! This role requires a software engineer for the development and ongoing … support of the software applications for the internal systems and the businesses clients. You will be principally working in a team of 12 working on a single product across the full development stack and will have the opportunity to contribute towards all aspects of the project. Ideally you will have between 2-4 years of experience and be a … keen learner with ambition to take your career to the next level. Software Engineer required skills: .NET (ASP.NET) C# HTML, CSS JavaScript/TypeScript SQL Angular or React is preferred You must be UK based & have full right to work in the UK. If this role matches your professional background or you think you’d be a strong match More ❯

Senior Java Engineer – Product Engineering | B2B SaaS | Insurtech Up to £120,000 per annum plus bonus and excellent pension London – 2 days a week Java | Spring Boot | AWS | Kubernetes | Event-Driven Architecture Senior Java Engineer – We have been exclusively engaged by a leading B2B SaaS technology business to find a Senior Java Engineer with a “product engineering” mindset … that deliver tangible business value. Working closely with Product and the business, you will be leading technical initiatives, and mentoring colleagues, while also helping to shape the organisation’s engineering culture. This is an opportunity for an engineer who sees software development as a means to solve meaningful problems, not just to write code. The role requires someone … by the opportunity to build modern, scalable systems that make a real-world impact. Please reply with your CV or call Simon for a chat. Senior Java Engineer – Product Engineering | B2B SaaS | Insurtech Up to £120,000 per annum plus bonus and excellent pension London – 2 days a week Java | Spring Boot | AWS | Kubernetes | Event-Driven Architecture More ❯

with cutting-edge technology, make an immediate impact, and collaborate with a team that values innovation, agility, and real-world problem-solving. What You’ll Bring Experience as a software engineer, ideally in fast-paced tech environments. Strong skills in C#, .NET Core, React, AWS/Azure, and database systems (SQL/NoSQL). One or more of Aurora … collaborative approach. A self-starter attitude — comfortable working independently within a distributed team. What You’ll Be Doing Build, enhance, and deliver new features across the company’s core software platforms. Troubleshoot and resolve complex technical issues in production environments. Collaborate with engineering and product teams to design scalable, maintainable solutions. Conduct code reviews and champion high-quality … engineering practices. Contribute to architectural discussions and help define technical direction. Mentor junior engineers and share best practices across the team. Contract Snr .NET Engineer - C#, SQL, React, AWS/Azure - £550/day (OUTSIDE IR35) - Hybrid More ❯

sciences companies across the world to provide bespoke innovative solutions for secure, efficient and accurate patient data collection. Delivered by a world-class team of technologists, product designers and software engineers across our international facilities, we offer a completely circular solution to provisioned medical devices from deployment to sustainable recycling. The Role We’re seeking a strategic and user More ❯

sciences companies across the world to provide bespoke innovative solutions for secure, efficient and accurate patient data collection. Delivered by a world-class team of technologists, product designers and software engineers across our international facilities, we offer a completely circular solution to provisioned medical devices from deployment to sustainable recycling. The Role We’re seeking a strategic and user More ❯