1 to 25 of 26 Senior Software Engineer Jobs in the City of London

Senior Software Engineer | Senior Engineer | Senior Full Stack Engineer 💰Up to £110,000 per annum 🏡Office based in Central North-West London, 2 days a week in office 💻TypeScript, Node.js, React.js. My client are a Series A–funded startup building a product … company scales globally. The team works at pace, close to users, and on real-time data problems , making this a strong fit for senior engineers who enjoy ownership, ambiguity, and building meaningful products from the ground up. You’ll work end to end across the application, contributing to product ...

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/Developer (Java AWS Kafka) London/WFH to £140k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global, cloud-native, prime broker that is replacing … custody system, designed for today's complex global markets. The company is experiencing great success and is expanding into the UK. As a Senior Software Engineer you will take ownership of building a brand new Futures Trading platform for the UK, primarily using Java with a focus ...

Senior Software Engineer | London (hybrid) | £85k - £99k + Equity | Python | FastAPI | SaaS Location: London (hybrid) Salary: £84,000 to £99,000 plus equity Tech Stack: Backend: Python (FastAPI), experience in any strongly typed language is required Frontend: TypeScript (Vue.js) Cloud Systems: experience across any GCP, Azure … Senior Backend Engineer who wants to own the backend properly, not babysit it? We are working with a fast growing AI startup that is already live with enterprise customers, real revenue, and real technical complexity. The platform is multi-tenant, data heavy, and deeply tied to AI powered ...

Role: Senior Software Engineer (with DevOps) Location: Remote (with occasional monthly collaboration days) Are you... A software Engineer with 5+ years experience, working with modern programming with one or more programming languages, Python and/or Golang, Java, Ruby, TypeScript etc? Experienced working on cloud … meet colleagues or even change if scenery when you like? About: Our client are a "Scale-Up" cloud solutions consultancy, helping customers to optimise Software & Cloud, covering DevOps, DevSecOps, Transformation, Strategy and more. Due to recent successes in the continued commercial strategy, we are now looking to grow ...

Senior Software Engineer | London | £100,000 - £160,000 | Python | FastAPI | AWS Location: London based - hybrid Salary: £100,000 - £160,000 + equity Tech Stack: Backend: Python (experience with FastAPI or Django or Flask beneficial) Cursor, Claude Code AWS - experience with Azure & GCP beneficial Are you a backend … engineer who cares more about building robust systems and being part of a well-funded, fast moving start-up? We are working with a recently funded Series A technology company building AI powered automation for real world, critical workflows. Their platform captures operational knowledge and turns it into production ...

Position: Senior Software Engineer Location: London, UK Salary: £75K - £110K OTE Equity: Competitive equity Signing Bonus: Up to $10k for unique cases Are you a builder at heart who thrives in early-stage startup environments? Join a dynamic, Series A-funded company revolutionizing corporate travel with … powered solutions. We're managing over $4B in corporate travel spend for world-leading enterprises and are on the lookout for a Senior Software Engineer to be part of our founding team. What You'll Do: Design, build, and deploy end-to-end features across the full ...

Senior Software Engineer | High-Growth Tech Scale-Up London Area (Fully Remote) PHP (Symfony or Laravel), Angular, TypeScript We’re working with a fast-growing B2B SaaS company that builds enterprise-grade software used by global organisations to manage and optimise complex data and operational workflows. … they continue to scale, they’re looking for experienced Senior Software Engineers to join their product-focused engineering team. This is an opportunity to work on a modern platform solving real-world challenges at scale, with high ownership and impact from day one. Key Responsibilities ...

Senior Backend Engineer London - 4 days on site Up to £110k + benefits We're hiring for one of the UK's fastest growing fintech scale-ups. As a Senior Software Engineer, you will be deeply hands-on designing, building, deploying and operating scalable infrastructure ...

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 Software Engineer - C#, .Net, TypeScript, JavaScript Hybrid, 2 days in the office which is located near Liverpool Street £70,000 - £90,000 If you enjoy solving complex engineering problems, learning from highly capable peers, and working on a product where your contribution genuinely matters, this … progression and the chance to help shape both the product and engineering direction. You'll be part of a bright, collaborative team of talented software engineers and academically strong problem-solvers who value clean design and thoughtful architecture. The Role As a Full Stack Engineer, you'll design ...

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) Salary: Salary is competitive and negotiable based on experience. Job Type: Full-time, Permanent About Us Chevalier Tech Limited is a tier … 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 (Betting/Trading) Canary Wharf, London (Hybrid) £75,000 - £85,000 + Holiday + Pension This is an excellent opportunity for an experienced developer to join a disruptive technology start-up at a pivotal moment of growth. If you are a versatile engineer … Managers to define requirements, collaborate with third-party developers, and ensure the seamless rollout of new releases through end-to-end testing. As a senior member of a small, dynamic team, you will also play a key role in system support and problem solving to ensure high-performance service ...

Senior Software Engineer/Developer (Java AWS Kafka) London/WFH to £140k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global, cloud-native, prime broker that is replacing ...

looking for a Senior Software Engineer to join a growing team building smart, scalable tools used by professionals across a range of industries. You'll work onsite in London, helping shape robust backend services and responsive user experiences using React, NextJS and NodeJS. What ...

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role building high … performance, scalable software for real-world, high-traffic systems. About the Role You’ll join a permanent feature team, taking end-to-end ownership of services, from design and development to testing, deployment, and optimisation. Your focus will be on building robust microservices that support high-traffic user experiences ...

About the Company A growing technology organisation is seeking a Senior Software Engineer to join its Data Platform team, working on tools and APIs that connect raw and enriched data to user-facing applications. About the Role This role offers the opportunity to collaborate closely with world … make data more actionable and accessible Stay pragmatic, recognising when to perfect and when to move fast Take full ownership across the entire software development lifecycle Feel comfortable switching between backend and frontend development Enjoy working closely with data engineers ...

problems that have never been solved before? Looking for a values‐led company that truly invests in your growth? We’re looking for a Senior Software Engineer to join our product‐engineering organisation and help build a next‐generation data and intelligence platform that powers blockchain analysis ...

Senior Core Java Engineer – Low-Latency Trading 💹 💰 Salary: Up to £125,000 + bonus + benefits 📍 Location: City of London (3 days onsite) Build ultra-low latency systems at the heart of global FX trading! This is an opportunity for a Senior Core Java Engineer … high-performance systems Background working in high-throughput, distributed environments Comfortable working in cloud-based infrastructure (AWS or GCP) Strong engineering fundamentals and a senior-level mindset (ownership, mentoring, architectural input) Interest in financial markets or trading systems (experience in finance is a plus, not essential) 🌍 Why join? ➡️Work ...

Senior Full Stack Engineer | London | £80,000 – £150,000 | Python | React Location: London (hybrid) Salary: £80,000 – £150,000 + meaningful equity Hiring for mid-senior-lead levels! Tech Stack: Backend: Python (Flask, FastAPI) Frontend: React, TypeScript Cloud: GCP or AWS Do you like building software … demo-ware. Not slide-ware. Real systems, in production, powering real businesses. We’re partnered with a Series A AI company building automation software embedded directly into the operational core of fast growing organisations. This is production critical, customer facing, revenue impacting software used daily at scale. This ...

robotics start-up – London This deep-tech company is developing next-generation autonomous platforms across ground, air and marine systems, combining embedded software, edge AI and robotics to deliver adaptive, real-world autonomy. The team are now looking for an Autonomous Platforms/Edge AI Developer to support … edge hardware. You’ll work closely with researchers, roboticists and embedded engineers, helping translate advanced AI and control concepts into reliable, real-time software on autonomous platforms. For this Autonomous Platforms/Edge AI Developer role, we are looking for someone with: Strong experience developing C++ software ...

title: Frontend Software Engineer (5+ Years) Client: Elite Tech Driven Trading Firm Salary: Up to £200k + Bonus Location: London (Hybrid Working) Sells: Cutting-edge tech, ownership of multiple greenfield projects, no red tape, gold medal Olympiads, exceptional technologists, option to research and develop your own models … friendly/collaborative environment, beautiful offices. An Elite Tech Driven Trading Firm is looking for a highly talented FrontendSoftware Engineer to join an elite group of individuals This team have an unlimited tech budget, promote a great culture and are made up of fantastic like-minded technologists! Role: They ...

Native | 0→1 Build | Series B We are in the most exciting era for product builders in decades. I’m hiring a Senior Fullstack Product Engineer for an AI-native London startup building collaborative, LLM-powered tools from first principles. Stack: TypeScript, Node, React, Postgres, AWS Comp: Above … market salary + meaningful equity This is senior in scope - not just years. You will: • Own complex user-facing features end-to-end • Build agentic workflows and real-time collaboration systems • Prototype rapidly with LLM integrations • Work directly with users to shape product direction • Help unlock the next 100x ...

York's Hudson Valley with offices in Hudson Yards and Brooklyn, we're now expanding to London—and looking for our first engineer on the ground to help us do it. About the Role This is a senior engineering role. You'll be the first CGCG engineer … Comfortable working with Excel Experience with authentication methods such as OAuth 2.0, API keys, JWT IT background with experience supporting, integrating, or administering enterprise software systems Exposure to SOC 2, GDPR, or enterprise security requirements Experience with Infrastructure as Code (CDK, CloudFormation, or Terraform) Knowledge of CI/ ...

most employees to be onsite five days per week, with pragmatic flexibility for personal commitments when needed. About the Role As a Forward Deployed Engineer, you will work in small, high-impact teams delivering end-to-end technical execution on mission-critical projects. You will act as the bridge … between advanced intelligence platforms and real-world operational environments. You’ll deploy and integrate autonomy software, operating systems, and tooling into complex customer platforms, often in demanding environments. The role spans software engineering, system deployment, hardware integration, and solution architecture. Responsibilities Deploy and operationalise advanced autonomy platforms ...