401 to 425 of 530 Software Engineering Jobs in London

Software Engineer – High-Performance Computing & Quant Tech HMx Labs – London (Hybrid), Permanent, ~£70k + benefits HMx Labs is a boutique consultancy focused on the messy, interesting intersection of high-performance computing, cloud, and quantitative finance . We help banks, hedge funds, and vendors design, build, and debug serious compute … platforms – from CPU/GPU clusters for risk calculations to low-latency analytics and large-scale simulations. We’re hiring a Software Engineer to work in the HPC side of the company. One day you might be talking to finance quants about risk workloads, the next you’re deep ...

Senior Software Engineer/Outside IR35 Contract/Java/AI/LLM Title: Senior Software Engineer AI First (Java/AI/LLM) Contract: 6 months Outside IR35 Location: London (hybrid) Pay: £500-£600 p/d Digital Transformation. Tiro are looking for senior software developer … with our client an established brand in the financial services sector. You would be joining a small team pioneering AI in their services. Senior Software Engineer/AI First, Outside IR35, Contract/Java/AI/LLM Responsibilities Develop and maintain software applications using Java. Implement ...

About The Role Job Level: 9 UK Wide We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems ...

Title: Software Engineer in Test Company: Specialist Technology/eCommerce Platform Location: London – 2-3 days a week Salary: up to £60,000 + benefits Tech essentials : Javascript and either Cypress or Playwright Interview process: 3 stage interview process Why should you be interested in this opportunity ...

Senior Software Engineer (Python) Hybrid London (2 days/week) Up to £100,000 + Benefits We're hiring a Senior Software Engineer to play a key role in building and scaling a high-impact ad-fraud prevention platform used globally. This is a senior IC role … engineers who enjoy ownership, solving complex problems, and setting a high bar for engineering quality. What you'll do: Lead delivery of complex, cross-service features Make pragmatic architecture and design decisions Own services end-to-end, including performance, reliability, and incident response Set standards for testing, observability ...

looking for a senior Front End Software Engineer who can be the technical go-to person in their area, offering guidance, mentorship, and hands-on expertise. You will be a proven senior who still loves to code, enjoys taking ownership of front-end decisions, and wants to play … both our technology and the people around you. This is a chance to make a real impact across multiple products and help influence our engineering direction as we continue to grow. We have bold ambitions as a business, and we're looking for people who want to grow with ...

partnering exclusively with one of London’s most prestigious trading powerhouses to hire a standout Front-End Software Engineer — someone who lives and breathes elegant UI engineering and wants to build products that matter at millisecond scale. This is your chance to work at the core of high … Build mission-critical tools that influence real-time trading decisions Work shoulder-to-shoulder with brilliant engineers and front-office teams Enjoy a flat, engineering-led culture with rapid iteration and true ownership Gain access to cutting-edge tooling, full autonomy — and compensation that reflects elite performance Compensation: £120k ...

enhancement. Their patented DSP and AI models are already being used in mission-critical environments and they’re now looking to expand their embedded engineering team. They’re seeking an Embedded Software Engineer to help design and develop next-generation embedded audio solutions. In this role … work on the full lifecycle of embedded systems, developing secure and compliant firmware, and supporting the continued growth of an emerging engineering team. For this Embedded Software Engineer role, we’re looking for someone with: Strong commercial experience in embedded software development Experience with secure firmware ...

Java Software Development Engineer in Test - FinTech - Java Remote (UK) | £80 - 90k Our client a cutting-edge fintech business is looking for a Software Development Engineer in Test (Java SDET) to strengthen their automated testing framework and drive software quality to the highest standards. This … testing to uncover edge cases and ensure robustness Pair with developers to enhance testing infrastructure for continuous delivery Proactively identify areas for improvement in software quality Essential Experience: Strong Object-Oriented Programming in Java (ideally Core Java) Proven background as an SDET Component testing, end-to-end testing & failure ...

Embedded Linux Software Engineer (Medical Devices & Custom Computing Systems) Are you passionate about building software that powers life-saving technology? Join a multidisciplinary team working on cutting-edge medical devices and custom computing platforms for hospital operating rooms. What You’ll Do Collaborate with diverse technical teams (application … software, embedded systems, computer vision, cloud platforms). Develop and productize custom computing and medical-grade devices. Work closely with hardware teams to build and maintain compatible kernels and drivers. Architect, develop, test, and debug system services and hardware-dependent applications. Lead code reviews for embedded software ...

Role We are helping to hire a Senior Software Engineer to strengthen the core foundation of our agentic data analytics platform, ensuring reliability, scalability, and performance as we move from MVP to enterprise scale. This is a core platform role with real ownership. You will work on data integrations … modern AI tooling landscape Some cloud infrastructure experience including Terraform Nice to Have Zero-to-one product experience, including OSS or side projects Data engineering experience such as pipelines and analytics Experience integrating LLMs, including prompt design and understanding model capabilities Deeper cloud experience, especially with GCP Experience with ...

want to work on problems that actually matter. You will be building backend systems that support advanced AI research and deployment decisions. The software you work on influences how complex models are tested, understood, and monitored before they reach the real world. This is serious engineering … shape how new systems are designed and brought into production Collaborating closely with technical stakeholders to solve ambiguous problems Taking real ownership over the software you build Most of the work is Python, but this is not scripting. You will be designing systems that need to be correct, performant ...

looking for a Contract Java Software Engineer to join my client in their FinTech Business Unit. 6 month | Inside IR35 | Hybrid (1x week London) | £550 per day What you'll do: Develop scalable, high-performance systems and microservices Solve complex technical challenges and advocate best practices Support compliance processes ...

looking for a Contract Java Software Engineer to join my client in their FinTech Business Unit. 6 month | Inside IR35 | Hybrid (1x week London) | £550 per day What you'll do: Develop scalable, high-performance systems and microservices Solve complex technical challenges and advocate best practices Support compliance processes ...

operation and closing over 90 million ledger, the XRPL offers streamlined development, low transaction costs, high performance, and sustainability. We are looking for senior engineering talent to help us maintain this high technical bar, while building innovative solutions to ensure the XRPL can power the growing needs … global digital economy. WHAT YOU'LL DO Increase the capabilities, performance, scalability, and reliability of the XRP ledger. Participate in the full software development lifecycle, including architecture, technical design, C++ development, bug fixing, as well as functional and performance validations. Be part of the open-source XRP ledger community ...

system that can reason across millions of documents immediately. What You'll Do Architect the backbone of a revolutionary system Pioneer breakthrough Performance Engineering Lead technical innovation Engineer systems that transform an industry What They're Looking For 8+ years of Python Development experience, ideally experience in distributed systems … Deep systems architecture experience Performance Engineering experience Technical Leadership experience Track record of building systems that handle millions of operations with sub second response times Background with AI/ML platforms Regulated industry experience What's On Offer Competitive salary and a meaningful equity stake in a fast-growing ...

provides support to the clients across EMEA, APAC, US and Canada. We have an excellent job opportunity for you. Job Title: GenAI Developer/Software Engineer Duration: 3 months Pay Rate: Market rate Clearance required: SC Location: Home—On-site once a month Role Description: We are running … with the equivalent of the pulse survey. We require developers who are comfortable innovating with tools that can generate audio, video etc. Strong prompt engineering skills are required. The role is predominantly working within Azure and embedded within a mature AI Factory. Deep technical understanding of GenAI tools, such ...

financial market, backed by top-tier investors (including Anthropic backers) and founders from MIT, Cambridge, Oxford. The role This is a greenfield platform engineering role with complete ownership over the core architecture. You'll design and build the systems powering real-time trading from the ground up, working directly ...

Stack Python (FastAPI), Postgres TypeScript, Next.js GCP, Kubernetes LLMs (OpenAI, Gemini), Speech-to-Text, Text-to-Speech Requirements 5–10 years of backend-leaning engineering experience. Strong Python experience. Some experience with LLMs or AI products. Early-stage startup experience strongly preferred. Having worked with customers is a plus. ...

Startup - Backend Python Engineer A pair of second time founders who have already built and exited successful ventures are assembling a new elite engineering team for their next AI startup! They have secured top tier backing (8 figures!), built early traction with thousands of users and are now searching … foundations from day zero Work directly with the founders on product strategy and technical direction Move fast in an iterative environment while maintaining high engineering quality Shape backend engineering culture, tooling and processes for a rapidly scaling product 🛠️ Tech Environment Python with FastAPI PostgreSQL Event driven backend services ...

Development team that designs and maintains cutting-edge trading platforms. You will be responsible for optimizing trading engines, developing custom hardware solutions, and leveraging software, hardware engineering, data science, and research to build critical tools and infrastructure. As a C++ Software Engineer, your role will involve designing ...

Lead C++ Software Engineer/Developer (Windows C/C++, C#) London to £115k FTC Are you a skilled C++ Software Engineer with technical/team leadership skills looking for a new opportunity? You could be progressing your career in a senior, hands-on role at a global … market data provider. As a Lead C++ Software Engineer you will head-up an Agile team (5 engineers) focussed on building and maintaini click apply for full job details ...

Software Engineer, GraphRAG, TypeScript, AWS, Remote, CO7428A A pre-seed start-up building a workflow and intelligence platform powered by agentic AI, multimodal analysis and domain-specific insight, requires an AI Software Engineer/Knowledge Graph Specialist. The AI Software Engineer will be contracted initially ...

Software Engineer London - Remote first (onsite twice per month) £160,000 + bonus + 10% pension + 10% benefit funding + 30 days holiday A leading financial institution is hiring an eFX Software Engineer to build and optimise high-performance trading systems within a low-latency e-trading … environment. You'll work as a senior technical contributor within the eFX engineering group, driving architectural decisions, evolving Java performance patterns, and shaping platform strategy at scale. This role offers significant technical scope, direct impact, and the opportunity to influence system performance, design, and future direction across ...

joining one of London’s most exciting entertainment brands - a creative, fast-moving business with over 100 people and a growing in-house engineering function that supports everything from digital production systems to cloud infrastructure powering live experiences. They’re building out their DevOps capability to bring more structure … scaling Kubernetes clusters, managing deployments with Helm and ArgoCD Owning CI/CD pipelines across multiple environments (GitHub Actions, Jenkins, etc.) Working closely with software engineers to streamline delivery and performance Bringing structure and observability into their environments using tools like Prometheus, Grafana, and ELK Championing DevOps best practice ...