326 to 350 of 425 Software Engineering Jobs in London

Sounds awesome, right? Now, let’s make sure you’re a good fit for the role: Must-have Skills: Strong fundamentals in Software Engineering. Direct experience with TypeScript and React. Proven ability to adapt across different full-stack environments. Demonstrated high performance in fast-paced, dynamic environments. Strong adaptability ...

Software Engineer Contract to Permanent Hybrid (London) Rates negotiable Most backend systems look fine on paper until they hit production. This role is about building services that actually work at scale, under real user demand. Why This Role Leading major media/streaming end client Real production impact from … Supporting and improving existing production systems Debugging real-world issues and keeping systems stable at scale Collaborating within an existing team + codebase (pragmatic engineering) Tech Stack Python AWS (Lambda, API Gateway, S3, DynamoDB, IAM) Event-driven systems (Kafka, SNS/SQS) Databases (Postgres, DynamoDB, Couchbase) CI/ ...

Senior C++ Developer - Fintech - London - Contract About the role: We are looking for an experienced Senior C++ Software Engineer to help grow and enhance our PTP software platform. The candidate will work on strategic enhancements to the platform as well as on client implementation projects. The PTP Platform … Securities Processing solution that provides trade life cycle processing for a wide range of global financial institutions. About the team: As a Senior C++ Software Engineer, you'll be part of our PTP Platform development group. The group is broken into smaller scrum teams that each hold responsibility ...

Software Engineer: E-Commerce Tech Startup (London) We're a funded e-commerce tech startup approaching public launch. The platform is built, transactions are live, and we're looking for an experienced, motivated software engineer to join us as an early hire. You'll work across the full ...

Software Engineer Our new client are expanding their engineering capability and are looking for talented Software Engineers with a strong focus on Java to join a growing team. If you thrive in modern engineering environments and enjoy building scalable, high-quality services, this role will … developing robust, secure, and efficient services using modern Java frameworks and tooling. Expect to contribute to API development, containerised applications, and cross-functional engineering initiatives. Must-Have Skills Strong commercial experience with Java Hands-on expertise with RESTful APIs Proficiency in Spring Boot Experience working with Docker Solid understanding ...

C++ Software Engineer – High-Frequency Trading A systematic trading firm of similar calibre to leading names in the space is seeking exceptional C++ Software Engineers to join its world-class engineering team. This is a hybrid position, open to candidates based in London or has the right … work in London. You will be part of a highly collaborative, low-ego engineering culture that prioritises performance, innovation, and impact. Working alongside some of the brightest minds in quantitative trading and systems engineering, you will build and optimise ultra-low latency, high-throughput systems that operate ...

Experis - Software Engineer Permanent Salary DOE London (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: Software Developer/Engineering Strong background within Python, React, 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 ...

Senior Software Engineer – AI Startup – Up to 160k 🚀🧠 💰 Salary: £70,000 - £160,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering … world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push ...

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) This is a hybrid role, 2 days remote and 3 days in the office Our client actively encourages diversity, equality and inclusion within its workforce and welcomes applications from a diverse background, REC Solutions Limited ...

Senior Java Software Engineer – Java 11+, Spring, Spring Boot, Microservices, Kafka, Akka, Docker/Kubernetes, Real-time, TDD/BDD, Reactive Programming, MongoDB Payments A Senior Java Engineer with a background in finance/payments and experience working on distributed real-time systems is sought after by a global … solutions to global financial institutions (including several Investment Banks), primarily to augment their payments capabilities. As a Senior Engineer, you will join the core engineering team working on the development of their real-time payments processing platform, using a primary tech stack of Java 17, Spring Boot and Akka. ...

Integrate data from multiple sources, ensuring flows are clean, reliable, and consistent. Optimise pipeline performance, reliability, and observability. Collaborate with Data Scientists, Analysts, and Software Engineers to create robust data solutions. Contribute to the architecture and design of data platforms and services. Maintain data quality, security, and compliance across … make a real impact. Our client offers a dynamic environment with opportunities for growth and innovation. If you're ready to take your data engineering career to the next level, we want to hear from ...

pipelines and DevOps principles. The role will require providing out of hours support (i.e. Monday to Saturday once per month). As a Senior Software Engineer with a focus on back-end development, you will play a key role in designing, building, and evolving high-performance, server-side applications. … Experience in developing applications that interact with at least one IDAM platform (e.g., ForgeRock, One Identity, Okta, Azure AD, AuthO) Java development Jenkins Reverse engineering Working collaboratively in a close-knit team and being able to work independently on Jira tickets ...

Software Engineer – Consumer Tech - Product Centric 📍 London (Hybrid, 3 days/week) 💰 £70-85k + Equity 🔧 React, Node, Next, TypeScript, AI tools (Full Stack) 👥 100,000s Paying Subscribers | Bootstrapped | Fast Growth I’m working with a high-growth consumer tech startup that’s built ...

Senior Software Engineer (Python/Java, AWS) London, Manchester or Cheltenham - primarily on site £60,000-£65,000 per annum basic salary, with some flexibility at the top end for the right candidate £15,000-£20,000 per annum in additional compensation related to clearance and wider benefits … Sanderson Government and Defence are partnered with a major organisation in the UK Defence and National Security space as they look to strengthen their engineering capability delivering into a highly secure government programme. This role can be based in London, Manchester or Cheltenham, and we are open to candidates ...

looking for a C++ Software Engineer to work on defence projects. Key Responsibilities Develop and maintain C++ and Python software for complex systems Work on real-time data processing, simulation, or sensor integration Support verification, validation, and testing activities Build and maintain CI/CD pipelines (Linux ...

Python Software Engineer – High-Frequency Trading We're working with a high-frequency trading (HFT) firm that is looking to expand its technology team with a Python Software Engineer. This is an opportunity to join a trading firm operating at the cutting edge of global markets, where technology … highly scalable, ultra-low latency trading systems that compete across major global exchanges. You’ll work on some of the most complex and rewarding engineering challenges in the financial technology space. The Role As a Python Software Engineer, you’ll collaborate with traders, quantitative researchers, and other developers ...

Lead Software Engineer Contract to Permanent Hybrid (London) Rates negotiable Most streaming platforms struggle to scale backend systems properly you’ve seen it. This role is about building the infrastructure that actually holds up under real-world production demand. Why This Role Leading major media/streaming end client … Kafka, SNS/SQS) CI/CD (Concourse, Git workflows) Databases (Postgres, DynamoDB, Couchbase) Observability (Prometheus, Grafana, CloudWatch) What You’ll Bring Strong backend engineering experience (Python preferred) Proven experience building distributed systems at scale Deep understanding of microservices + event-driven architecture Experience debugging complex production environments Ability ...

C++ Software Engineer Salary: £150k–£200k Total Comp: £250k–£500k (based on performance and seniority) I'm partnered with a quantitative trading firm hiring a C++ Software Engineer to join its high-frequency trading team in London. The focus is on building and scaling ultra-low-latency systems … interest in hardware behavior, networking, and optimization Why Join: Work on systems where tiny optimizations have real financial impact Collaborate with top engineers across software and hardware Engineering-led culture focused on innovation and excellence Tackle complex, cutting-edge performance challenges ...

with global reach. About the Role We're looking for a Staff or Senior Product Engineers to join as an early member of our engineering team. We're a small team of generalists with deep experience in startups and who care about craft. We move fast, ship often ...

GenAI Engineer/Software Developer (Python LLM RAG) London 12 month FTC to £180k Are you a Senior Software Engineer with a strong knowledge of the capabilities of GenAI? You could be progressing your career in a hands-on role at a tech driven, global Asset Manager with … evaluation and engineering. The work is interesting and complex, spanning Python development, RAG and retrieval workflows, MCP and tool integrations, model evaluation and the engineering needed to turn promising ideas into reliable internal tools. You'll be at the intersection of platform engineering, data engineering and developer ...

Lead Software Engineer/Developer (Ruby TypeScript React) London/Remote to £130k Are you a polyglot Software Engineer with Developer Experience, API/SDK development skills? You could be joining a highly regarded provider of serverless real-time infrastructure for the Internet that processes billions of messages … from live chat and VoIP calls to real-time pricing and stock availability for a multitude of services around the globe. As a Lead Software Engineer you'll own the technical strategy and architecture for one or more Developer Ecosystems (iOS, Web, Infra/Automation), define and drive best ...

designing and building cutting-edge generative AI solutions for complex challenges. You will report to the Technical Lead and collaborate with data scientists, software engineers and product specialists across the team to build and deliver high-impact solutions. Essential Skills and Experience Expert-level Python programming skills; strong advocate … Unix, pytest). Experience retrieving data from structured, unstructured and web sources (Selenium/PlayWright, Pandas, XML etc) Must have experience building data engineering pipelines in Azure Experience in Azure including Azure Fabric, Data Factory and Azure integrated services such as ML Studio, Foundry, Synapse, Cosmos Deep expertise ...

Graduate Quant Software Engineer (C++/Java – Trading Systems) | £55,000–£77,000 | Hybrid (London/Remote) Build technology that powers real trading. Join a high-performance engineering team developing low-latency, resilient backend systems used in live trading environments. You’ll work on complex technical challenges from … building software that genuinely impacts how markets operate — not just writing code in the background. This is a fast-growing fintech where strong engineers progress quickly into Senior, Low-Latency, or Quant-Engineering tracks within 12–24 months. What You’ll Do Design, build, and optimise backend components ...

C++ Software Engineer London | Hybrid (2-3 days per week) | Competitive salary + bonus Ncounter is partnering with a leading trading technology group to hire an exceptional C++ Software Engineer to build and evolve high-performance order gateway systems used in fast-moving fixed income markets. This … engineers, working across a high-availability C++ codebase to deliver fast, resilient and observable services. You’ll be empowered to design, implement and test software that directly impacts trading performance, scalability and reliability. Key Responsibilities: • Design and develop high-throughput order gateway components in modern C++ • Implement robust connectivity ...

Experis - Software Engineer Permanent Salary DOE London (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: Software Developer/Engineering Strong background within Python, React, SQL, TypeScript Experience click apply for full job details ...