1 to 25 of 48 Senior Software Engineer Jobs in the City of London

Senior Product Engineer | Senior Software Engineer | Full Stack Engineer | Senior Software Engineer 🌍 Climate Tech Startup Scaling Real-World Carbon Removal 💰 Up to £95,000 + Equity 💻 C#, React, Python, Azure 📍 Hybrid/Flexible | London Waterloo We’re partnered with … most interesting climate tech startups in the UK right now, a company building software and infrastructure to help scale large-scale carbon removal and sustainability initiatives globally. The business is entering a major growth phase and is building out a high-calibre engineering team to support that growth. They ...

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) ***This is a hybrid role, 3 days remote and 2 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/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 ...

interested in working in Tech for Good? Have you got experience working with Kotlin, or are keen to work with Kotlin? Senior Software Engineer – Clean Energy for EV Charging 💰 Up to £120k + bonus + shares + benefits 📍 Hybrid in London 2 days per week … accessible green energy for the charging of electric vehicles. Due to exciting projects in the pipeline, they are looking to grow their team with Senior Software Engineers who have experience in the following: Kotlin software development (They are also open to Core Java experience, as long ...

Senior Software Engineer - Automated Trading - London When you think about being challenged by a set of interesting problems in software engineering, what do those typically look like? We're working with a team of engineers at an algorithmic trading firm in London, which solves problems that … they end up writing a lot of heuristics for classifying transactions. Who they need to join them? There are two avenues they are prioritising. Software Engineer with several years of experience from a tech-driven company, supported by top-class academics. Existing team members hold IMO/ ...

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 | London | Hybrid | Tech for Good Location: London (hybrid) Salary: £80,000 to £95,000 + equity + benefits Tech stack: • Python (Django, Flask or FastAPI preferred) • React/TypeScript • AWS We’re partnered with a mission driven company using technology to support large scale … domain across the platform • Designing scalable systems that solve operational and technical bottlenecks • Working closely with stakeholders across different parts of the business • Building software that has direct real world impact beyond the screen • Contributing across the stack, with a stronger focus on backend engineering • Helping shape engineering direction ...

Senior Software Engineer (Data) Department: Engineering Employment Type: Full Time Location: London Description Hybrid: 2 days per week in our Tower Bridge office (Tuesdays & Thursdays) Uswitch At Uswitch, our goal is to be the UK’s favourite way to choose and manage home-life essentials – from broadband … with multiple teams like CRM, PPC & analytics to ship the pipelines, integrations and tooling behind how we find and talk to customers. As a Senior Software Engineer, you'll help design, build, and maintain our data pipelines and the services around them. You'll bring strong software ...

Contract Senior Software Engineer (Java or Python) | Inside IR35 Contract length: 6 months (with potential to extend) Location: London Working Environment: On-site You will be joining a private equity firm as a senior software engineer, to work across the following responsibilities: Develop ...

Senior Fullstack Software Engineer (Signals Team) Location: London, UK (Hybrid) Department: Engineering Reports To: Engineering Manager Job Type: Full-Time About the Role We are looking for a Senior Fullstack Software Engineer to join our Signals Team, contributing to the development of secure, scalable … security and identity features into Entrust’s identity platform What We’re Looking For Required Qualifications 5+ years of professional experience in fullstack or software engineering Strong proficiency in React/TypeScript and at least one backend language (Python, Kotlin, or Ruby) Proven experience designing and building distributed systems ...

Senior Software Engineer Department: Engineering Employment Type: Full Time Location: London Description Hybrid: 2 days per week in our Tower Bridge office Tempcover are at the forefront of the fast-growing world of short-term insurance. Our mission is to make car insurance flexible, quick, and easy … currently undertaking an overhaul of our systems to modernise and help us power the next generation of our technology. We are looking for a Senior Full Stack Engineer who can bring experience, judgement and curiosity to help shape this journey; working in a role with ownership, empowerment ...

Senior Software Engineer – Python, AWS, SQL Location: London - Hybrid (2 days per week on-site) Salary : Up to £100,000 Type: Permanent, Full-Time We’re partnering with an exciting, fast-growing technology business that’s tackling complex, real-world challenges with cutting-edge engineering. They … looking for a Senior Engineer (IC3) to play a key role in designing and delivering high-impact, cross-service features within a modern, distributed platform. What you’ll be doing: Leading the design and delivery of complex, scalable systems across multiple services Making pragmatic architectural decisions ...

Senior Software Engineer | ~£950/day Outside IR35 | 6-months initial contract | London Industry: Trading Location: London Job Type: Contract - 6-month initial Our client is building the next generation of execution and order management (EMS/OMS) infrastructure for global commodities trading. You will join … trading platform from the ground up, tightly integrated with risk, pricing, and market data systems to support high-performance trading environments. This is a senior, hands-on role for an engineer who wants end-to-end ownership — from low-level protocol integration through to distributed execution services ...

Senior Backend Engineer (Python/Go), London (Hybrid), £100,000 - £120,000 + Bonus • Job Title: Senior Backend Engineer • Salary Range: £100,000–£120,000 + Bonus & Benefits • Location: London | Hybrid Working (2–3 days in office) Our client is expanding a newly created strategic technology … mindset to rapidly deliver scalable, data-driven products that solve complex commercial challenges for some of the world’s largest banking organisations. The Senior Backend Engineer will play a critical role in designing and building a brand-new API-first data intelligence platform used by enterprise clients. ...

Senior Software Engineer – Perm £85,000 base + Benefits package 3 days in London based office required We are working with a well established exciting client that are interested in candidates who have solid experience in working on full-stack (frontend and backend), and who cover … designing and building scalable full-stack web applications using TypeScript/React and C#/.NET (or equivalent technologies). Deep understanding of core software engineering principles, including design patterns, modular architecture, and maintainable, testable code. Proven ability to design, build, and evolve RESTful APIs and microservices, with ...

Senior C# Engineer City of London (On-site) Permanent | £90,000 – £120,000 We’re partnered with an innovative proprietary trading firm in the City of London that is hiring a Senior C# Software Engineer . You’ll work on greenfield projects, cutting-edge technology ...

Title: Senior Embedded Software Engineer Rank: Determined by the confirmed level and scope of experience Company: Chevalier Tech Limited Location: Colindale, Greater London (On-site) Job Type: Full-time, Permanent About Us Chevalier Tech Limited is a tier-one supplier specialising in advanced technology systems, primarily … Smart Door Handles, and Control Electronics, which are integrated into high-end passenger and super cars worldwide. About the Role As a highly Experienced Software Engineer , you will lead the software engineering team, play a pivotal role in the design, development, and implementation of embedded software ...

Senior Software Engineer - Foodtech Start-up London Hybrid- 2 days in office (3 can be remote in UK) £60-70k + equity This job opportuinity is workin for one of the most exciting early-stage foodtech startups in London right now, building the operational and logistics … infrastructure behind modern workplace catering.Having rapidly scaled and tripled revenue over the past two years, they’re now hiring a Senior Full Stack Engineer to help build the next generation of the platform from the ground up. This is a genuinely high-impact opportunity within a fast-growing ...

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's founding team has real pedigree, with … just over two 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 ...

Senior Backend Engineer Location: London, Hybrid (2 Days Onsite) Salary: £90,000 - £105,000 + Competitive bonus We're working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time … operations, connecting users with seamless, intelligent technology solutions. They are looking for a Senior Backend Engineer with deep expertise in JVM technologies to help scale and enhance their high-performance systems. There will be a requirement to use Kotlin moving forwards! This is an opportunity to work with ...

Senior Software Engineer/Reliability Engineering - Real-time Data Location London Business Area Engineering and CTO Ref # 10049067 Description & Requirements Our department is responsible for efficiently distributing financial data from its source to interested users all around the world. This includes (for example) stock prices … foreign exchange rates. Data can either be served in response to a request or streamed in real time. The group owns: The distribution software and infrastructure A range of different sources of data Supporting services to administer and manage the system, including permissioning and metering The team is also ...

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

Senior Software Engineer - Electronic Trading Shared Services Location London Business Area Engineering and CTO Ref # 10047651 Description & Requirements We are part of the engineering organization that powers Bloomberg’s global Electronic Trading platforms across Fixed Income, Foreign Exchange, Equities, and Derivatives. Our systems process millions … understanding of how global financial markets operate by working closely with product managers and clients You’ll need to have Demonstrated enterprise experience developing software in C++ and Python A degree in Computer Science, Engineering, Mathematics, or equivalent practical experience Strong understanding of data structures, algorithms, and software ...

Senior Software Engineer/SRE - BQL Reliability Engineering Location London Business Area Engineering and CTO Ref # 10049751 Description & Requirements Bloomberg runs on data. It’s our business and our product. BQL is the single API for all client-facing structured data at Bloomberg. As Bloomberg Terminal … MTTR) by improving signal quality, strengthening alerting, and enabling rapid root cause analysis. We also embed reliability as a first-class concern throughout the Software Development Lifecycle—driving instrumentation standards, defining SLIs and SLOs, influencing design reviews, and ensuring production learnings continuously improve engineering practices. By institutionalizing observability ...

Senior Product Engineer - yhangry (YC W22) We're the UK's largest private chef marketplace, think Airbnb for private chefs. We’re currently across the UK and US enabling chefs to earn over 3x more than they would working in restaurants. We are currently rethinking the way customers … chefs curate in person events using AI to enable better human connections across the world. We're looking for a Senior Product Engineer to join our team. This is a founding-engineer-style seat: high ownership, direct impact, no layers. We’ve rebuilt our engineering culture around ...