1 to 25 of 61 Permanent Senior Software Engineer Jobs in London

Senior Software Engineer (Python) – Reducing Carbon Emissions with Machine Learning! Python on AWS £90-£110,000 per annum plus stock London Office - 1-2 days a week Are you a Senior Software Engineer with a passion for working with curious, humble colleagues to build … exceptional customer-focused products using Python? Do you align with their principles – “Work as much as you want, where you want” - giving Software Engineers the autonomy and support to perform at their best? Do you want to be part of a period of significant growth and opportunity, shaping elegant ...

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 … Solutions Limited does not discriminate in regards to age, gender, national origin, religion or any other basis. An excellent opportunity has arisen for a Senior Software Engineer C++to join a friendly team my client are a well-established exchange (FinTech, Financial Technology) based in the City. ...

Senior Software Engineer | 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 Software Engineer with extensive knowledge of building distributed systems … 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 ...

Role: Senior Software Engineer Location: London Area, United Kingdom (Hybrid) Employment Type: Full-time Seniority: Senior Level Salary: £85,000 + Bonus Are you a highly experienced Software Engineer ready to take ownership of complex systems and drive engineering excellence in a fast-paced … environment? We're looking for a Senior Software Engineer to play a key role in designing and delivering scalable, high-quality software solutions. You'll operate at the heart of engineering-leading technical decisions, mentoring team members, and shaping architecture across modern, cloud-based platforms. This ...

Role: Senior Software Engineer - Front End Location : London/Newcastle – Hybrid Office & Home Who Are We? mkodo builds world class apps, middleware and digital products in the global lottery, betting, and gaming space. We have an open, supportive, dynamic culture where talented people are trusted to contribute … global lottery industries, brought mkodo strong financial security, access to resources and clients at a global level. About the role: Reporting to a Software Engineering Manager, the Senior Software Engineer is a major contributor and technical influencer within an engineering team delivering high-quality applications ...

Senior Software Engineer/Principal Software Engineer- C++, Python - Financial/Banking Candidates will have a minimum 8+ years C++ experience and excellent knowledge of Python -coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity. … work with the Product, Infrastructure and QA teams, to produce high performance, low latency and highly reliable code. Your goal will be to develop software which handle large amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this ...

Senior Software Engineer/Front End Developer (TypeScript React) London/WFH to £120k Are you a technologist with start-up experience looking for your next opportunity? You could be progressing your career at a tech start-up that is producing an AI native data pipelining platform. … Salary to £120k Equity Impactful role with excellent career progression as the company scales Hybrid working Pension Your role: As a Senior Software Engineer within a small team, you will build and implement new features across the full tech stack, with a focus on owning the build ...

innovative medical technology company based in London is looking for a Senior Embedded Software Engineer to join their growing R&D team. The business designs and manufactures smart surgical appliances combining precision engineering, robotics and advanced embedded software. We’re looking for an experienced Senior Embedded … Software Engineer with previous exposure to regulated medical device development and video experience. Their project work will involve a lot of exposure to robotic interfaces. This role is predominantly onsite, with one day per week available for home working. The company also offers flexible working hours, as long ...

Senior Software Engineer | Lloyd's Broker | London - Hybrid 2 days | Up to £85,000 (doe) Our Client, a respected broker within the insurance industry, is seeking a highly skilled Senior Software Engineer to join their innovative team. This is a hands-on role with … server databases, ensuring optimal performance and data integrity. Analyse data and generate robust reports to support business decision-making. Collaborate with third-party software vendors on integration projects. Assist team members by providing guidance, training, and technical support. Contribute to the continuous improvement of software processes and standards. ...

Senior Software Engineer Central London | £85,000 plus 10% bonus and benefits | 2 days in the office This is a chance to step into a senior, hands on engineering role where you can influence how complex, revenue critical platforms are designed and built. You will play … Design and build scalable, reliable backend and frontend systems that support internal products used to manage advertising campaigns end to end Act as a senior technical voice within the team, guiding design decisions and challenging the "why" behind solutions Coach and support a small group of developers through code ...

Senior Software Engineer London – Hybrid We’re working with a growing, international technology business at a pivotal stage of its scale-up journey. With a high-performing team of around 40 people and ambitious growth plans, the company is now seeking a Senior Software Engineer … systems and support the next phase of scale. Reporting into the VP of Engineering, this role is focused on building reliable, scalable software and supporting the systems that underpin the company’s platform. While not a people management position, it carries significant influence across engineering and plays a central ...

Senior Software Engineer Location: London (hybrid, 2 days per week in the office) Salary: Up to £95,000 + 10% Bonus Working Model: Hybrid (2 Days in Office per Week) This is an opportunity to step into a genuinely influential senior engineering role within a growing … requirements constructively and helping the team focus on the why, not just the task Your Skills and Experience Strong commercial experience building production-grade software in JavaScript or TypeScript environments Backend development experience with Node.js and modern APIs Frontend experience with React, ideally including Next.js Experience working ...

Senior Software Engineer | Sports Data London, UK | Remote Working Up to £80,000 + Company-wide benefits We’re partnered with a high-growth sports media network that operates a portfolio of market-leading brands and partnerships across the sports betting and tech space. Their mission … fans with premium content, real-time insights, and cutting-edge tools, all powered by modern, cloud-native technology. They are looking for an established Senior Software Engineer to join their expanding data team, where you will be working directly on key services that power a core part ...

Senior Software Engineer Lloyd's Broker London - Hybrid 2 days Up to £85,000 (doe) Our Client, a respected broker within the insurance industry, is seeking a highly skilled Senior Software Engineer to join their innovative team. This is a hands-on role with ...

Senior Software Engineer | £70k–£95k | Python • FastAPI • AWS • EKS 🚀 Looking for a product-led engineering role in a recently profitable, high-growth scale-up? This isn't just about maintenance; it’s about building high-scale, cloud-native microservices and tackling a massive upcoming greenfield build. … passion for clean code and architectural best practices. Interested in joining a profitable scale-up with a top-tier engineering pedigree? Let’s chat. 📩 Senior Software Engineer | £70k–£95k | Python • FastAPI ...

Title : Senior Software Engineer (Compilers) Company : HPC & AI Location : London (primarily remote) Compensation : Up to £190,000 Company : An advanced HPC R&D firm, looking to expand the UK compiler team. Most of the team are ex-Big-Tech, ex-FAANG or ex-Chip firms. They joined … technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring. Role : Senior Software Engineer position with an emphasis on AI Compiler development. You will be a significant hire and will own much ...

Title : Senior Software Engineer (GPU Drivers) Company : AI Acceleration Location : London (very flexible WFH) Pay : Up to £160,000 + bonus and benefits Company : An advanced HPC R&D firm, looking to expand their GPU Driver team. Most of the team are ex-Big-Tech, ex-FAANG … technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring. Role : Senior Software Engineer position. You will be a significant hire spearheading much of their 2025 development. Much of the team will be built ...

Senior OR Mid Software Engineer - London (Hybrid/2days onsite) - Up to £95K + Bonus TogetherWeTech is hiring a Backend Engineer for their progressive Computer Vision (AI) client that focuses on end-to-end security solutions. As a Backend Engineer, it's a great opportunity … Insurance Dental Insurance Stock options Personal development training budget Key Requirements & Responsibilities: Collaborate with cross-functional teams to design, develop, and implement high-quality software solutions. Their environment is Golang (Must have experience) Lead the architecture and design of complex systems, ensuring scalability, reliability, and performance. Strong expertise ...

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 … 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 ...

scale up our tech team with the very best engineers to supercharge our growth. We are looking for a bright, driven, full-stack Senior Software Engineer who is excited about solving complex problems and building scalable platforms. The role As a Senior Software Engineer … Understand complex business problems then propose and implement technical solutions Have input into the architecture, working closely with the Head of Technology and other senior team members Work with other engineers and the business to improve user experiences Bring your experience and enthusiasm to our engineering culture Promote excellence ...

SENIOR SOFTWARE ENGINEER £85,000 LONDON We're working with a well-established digital media and technology organisation who are growing their engineering function and hiring Senior Software Engineers to help shape the next phase of their internal platforms. This role suits engineers who enjoy … Product, Architecture, and other Engineering teams to ensure solutions are well-designed and fit for purpose Act as a technical sounding board for less-senior engineers, providing guidance and reviewing approaches rather than simply approving code Ensure code quality, performance, and maintainability across the platform TECH STACK Node.js (backend ...

Senior Software Engineer Python London, N7 (Hybrid) £75,000 £90,000 + Equity Deep Tech Scale-Up Sponsorship available - have to be a UK resident and based locally to the role. Were partnered with a well-funded deep tech scale-up with a global footprint, currently scaling … their internal platforms and looking for a Senior Cloud Software Engineer to play a key role in building systems that support cutting-edge research and engineering. This is a high-impact opportunity to work in a complex, hybrid environment (cloud and physical systems), where your work directly ...

Senior Cloud Software Engineer London, N7 (Hybrid) £75,000 £90,000 + Equity Deep Tech Scale-Up Intro Were partnered with a well-funded deep tech scale-up with a global footprint, currently scaling their internal platforms and looking for a Senior Cloud Software Engineer … complex, hybrid environment (cloud and physical systems), where your work directly enables breakthrough technology. The Role This is a hands-on cloud software engineering role focused on building and owning internal applications and cloud-based systems. Youll work across backend development and cloud infrastructure, with a strong emphasis ...

Senior Software Engineer Location: London (Hybrid/On-site) Salary: £100,000 – £150,000 + equity About the Company We’re working with an early-stage, venture-backed legal technology startup on a mission to transform one of the UK’s most broken consumer experiences: the legal … strong foundation for navigating regulation while moving quickly in a traditionally slow industry. The Role This is an opportunity for a Staff or Senior Product Engineer to join as one of the earliest engineers in the business. You’ll be part of a small, high-calibre team ...

Senior Cloud Software Engineer London, N7 (Hybrid) £75,000 £90,000 + Equity Deep Tech Scale-Up Intro Were partnered with a well-funded deep tech scale-up with a global footprint, currently scaling their internal platforms and looking for a Senior Cloud Software Engineer ...