501 to 525 of 648 Software Engineering Jobs in London

every 4 - 8 weeks) Salary: Up to £100,000 An established, global technology business within the hospitality-tech industry is seeking a talented Backend Software Engineer to help build and scale cutting-edge digital solutions. This is a chance to work on greenfield projects - building new, scalable products that … doing? Design, develop, test, and maintain high-performance backend systems supporting real-time hospitality operations. Take ownership of key features throughout the software development lifecycle - from technical design through to deployment and ongoing optimisation. Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer ...

trusted by leading brands and deliver real-world impact across sustainability, education and safety.This is a pivotal role, reporting to the Head of Engineering helping lead tech direction and delivery for some genuinely innovative products. The Role Act as the technical SME across multiple engineering teams including … Applications, GIS and Robotics) Provide hands-on technical leadership-shaping architecture, improving products and unblocking delivery. Solve complex engineering problems and drive best practice across the organisation. Requirements 5+ years' experience as a Principal Software Engineer (or similar) in an enterprise environment. Proven track record leading across multiple ...

trusted by leading brands and deliver real-world impact across sustainability, education and safety. This is a pivotal role, reporting to the Head of Engineering helping lead tech direction and delivery for some genuinely innovative products. The Role Act as the technical SME across multiple engineering teams including … Applications, GIS and Robotics) Provide hands-on technical leadership-shaping architecture, improving products and unblocking delivery. Solve complex engineering problems and drive best practice across the organisation. Requirements 5+ years' experience as a Principal Software Engineer (or similar) in an enterprise environment. Proven track record leading across multiple ...

Senior Software Engineer - Rust (Any Backend Language Accepted) Fastest Growing Start-up in the UK | Defense | Senior Software Engineer | Rust We are partnered with one of the UK's fastest-growing start-ups. They are a very technically focused group building cutting-edge decision-making technology. The company … years, and already have a lot of customers in the UK. On-site | London Up to 150,000 + Equity Senior/Principal Software Engineers: They're looking to add Senior/Principal Engineers to their team. The team are open to hiring pure backend engineers, or full-stack ...

Senior Software Engineer - Rust (Any Backend Language Accepted) Fastest Growing Start-up in the UK | Defense | Senior Software Engineer | Rust We are partnered with one of the UK's fastest-growing start-ups. They are a very technically focused group building cutting-edge decision-making technology. The company … years, and already have a lot of customers in the UK. On-site | London Up to 150,000 + Equity Senior/Principal Software Engineers: They're looking to add Senior/Principal Engineers to their team. The team are open to hiring pure backend engineers, or full-stack ...

incident response and outage management, including triage, stakeholder communication, and resolution Design, build, and maintain CI/CD pipelines to enable reliable and frequent software delivery Implement and support cloud infrastructure using Infrastructure as Code Support containerised platforms and orchestration solutions Collaborate across engineering teams to improve DevOps … Kubernetes (build, deploy, operate) CI/CD tooling (e.g. GitLab) Experience operating production systems in complex environments Solid understanding of DevOps, SRE, and platform engineering principles Comfortable working in agile, multidisciplinary teams DevOps Engineer - Contract Client: Government/Public SectorContract Length: 6 monthsRate: £440 per dayClearance: SC cleared preferred ...

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 ...

Gemba Advantage is seeking a Senior/Principal Software Engineer to design and deliver secure, scalable software solutions while working in small agile teams. The role requires active SC or DV clearance and entails championing modern engineering practices, shaping architectural direction, and influencing technical decisions. Candidates should ...

Software Engineer, Firebase, GCP, COR7557A An exceptional opportunity for an AI Software Engineer to join an early stage start-up, building a workflow and intelligence platform powered by agentic AI, multimodal analysis and domain-specific insight. This is a hands-on lead engineering role, with a clear … company scales - an Engineer who wants to lead. What will I be doing? Building on Firebase, using Claude API and leading LLMs, the AI Software Engineer will build the end-to-end architecture, security, performance and integration. Working closely with the Head of Product, the AI Software Engineer ...

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 ...

This Senior Software Engineer role will appeal to those who have already thrived in an Electronics Engineering environment and seek to broaden their knowledge in this type of application. With a full understanding of the Software Lifecycle (Requirements, Design, Development and Test) you will need to have ...

Principal Software Engineer – AI in Healthcare (Python/Distributed Systems) Overview We’re building automation systems that enable AI agents to operate like doctors and nurses. As a Principal Software Engineer, you will work directly with hospitals and clinics to deploy production-grade AI systems for patient communication … iterate quickly. Ensure performance, reliability, and clinical accuracy in mission-critical systems. What We’re Looking For 5+ years building complex, production-grade software systems. Strong expertise in Python (Go, React, AWS are a plus). Experience designing scalable architectures from scratch. High ownership, low ego, and comfort operating ...

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 ...

Software Engineer — AI x Finance 💡 What if your next role let you reinvent how the world’s most important business decisions are made — turning Excel into an AI-powered engineering environment? 🚀 Our client — a seed-stage AI startup — is hiring a Software Engineer (London, onsite). They … tools (Cursor, Claude Code) to ship high-quality code at speed ✅ Own features end-to-end — from Rust services to frontend ✅ Write highly optimised software (memory, caching, performance) ✅ Improve AI agent systems, tooling, and context optimisation ✅ Own backend infrastructure and CI pipelines ✅ Collaborate closely with design to deliver polished ...

Founding AI Software Engineer | Global Media | London/Yorkshire | The Opportunity Join a newly formed AI team acting as an internal incubator for a highly established, global media and technology group. We are reinventing how we operate through the lens of artificial intelligence, building high-impact solutions across … autonomy of a startup founder, backed by the resources, scale, and rich data of a heritage media institution. What You’ll Be Doing Core Engineering & Prototyping Ship at Velocity: Build AI-powered solutions rapidly using AI-native development approaches, leveraging tools like Claude Code and agentic engineering techniques ...

Lead Software Engineer – Ruby on Rails - London (Hybrid) | Full-Time FRESH has partnered with a fast-growing B2B SaaS company building a next-generation data platform that delivers real-time insights to support passengers requiring assistance while travelling. They are now hiring a Tech Lead to strengthen the core ...

looking for an Automation Software Engineer with strong Power Automate experience, supported by .NET and scripting, to deliver and mature automation across IT service management and operational workflows. Contract: 6 months Rate: £650/day (Inside IR35) Location: London (weekly for first 2 weeks, then monthly) What ...

working with a forward-thinking technology company looking to hire a Graduate/Junior Software Engineer to join their growing team. This is a fantastic opportunity for someone early in their career to gain hands-on experience across a modern infrastructure stack, working on systems that are scalable, secure ...

working with a forward-thinking technology company looking to hire a Graduate/Junior Software Engineer to join their growing team. This is a fantastic opportunity for someone early in their career to gain hands-on experience across a modern infrastructure stack, working on systems that are scalable, secure ...

strong focus on performance, scalability, and real-time decisioning. Process? 3 stages - Chat with EM>Take home assignment and subsequent walk through with Engineering Team>Sometimes follow up chat with VP/CTO. Remote v Hybrid? Hybrid - London Victoria office - 3 days per week mandatory. Salary? Up to £130k ...

Python Software Engineer/Developer (Data ML) Remote UK to £75k Are you a data savvy Python Software Engineer? You could be progressing your career in as a hands-on Python Software Engineer role as part of a friendly and supportive international team at a growing … presence; their platform enables an insurance quote to be made to the consumer within 60 seconds, using just 4 clicks. As a Python Software Engineer you will play a key role in building the foundational platforms that enable Machine Learning at scale across all countries where the company operates. ...

Software Engineer – Real‐Time Python Systems (Front Office) A leading global investment bank is growing a front‐office engineering team responsible for building and owning high‐performance, real‐time systems used directly in live environments. This role is firmly hands‐on and engineering‐driven. You’ll work … building and supporting backend systems in live environments Familiarity with APIs, databases, and distributed systems Finance or FX experience is helpful but not required - engineering ability comes first ...

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 ...