26 to 50 of 153 Senior Jobs in the City of London

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 who enjoys working across … 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 delivery. ...

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 … early stage product environments Experience with data ingestion pipelines or internal tooling for AI or data teams The engineering team is currently small and senior, with a strong academic and systems background. There is no formal product team. Engineers own user experience, technical decisions and delivery. The culture values thinking ...

GenAI Full Stack Engineer - Consultant/Senior Consultant Salary: £60,000 - £70,000 pa + £4,000 Bonus plus benefits, perks and healthcare options Job Type: Permanent - Hybrid/2 x days per week - Travel to client site Base Locations: London, Manchester, Newcastle, Glasgow Overview: We're looking … GenAI Full Stack Engineer who is passionate about solving real-world challenges through technology. You'll work closely with senior stakeholders both internally and within key clients to create GenAI strategies that translate business issues into relevant technical solutions and competitive propositions that are scalable, secure, and sustainable. Your Role ...

Senior Software Engineer Central London | Hybrid £100k–£140k + bonus + equity Python, Databricks, AWS/GCP, Kubernetes We’re hiring a Senior Software Engineer to join a well-funded data business operating in the government/intelligence space. This Senior Software Engineer role sits within the Core Engineering team … working on a high-scale data platform analysing complex transaction data. It’s a technically challenging environment with real-world impact. As a Senior Software Engineer, you’ll optimise ETL/ELT pipelines (batch & streaming), improve architecture and latency (with a big focus on this), strengthen data quality and monitoring ...

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 AI-powered solutions. … 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 stack, including frontend, backend, and infrastructure. Contribute ...

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 the legacy infrastructure used across … 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 on backend development ...

Senior Azure Platform Engineer | Azure, Terraform & Kubernetes | Cloud & Platform Consulting Salary: £75,000–£90,000 + bonus & equity Location: Hybrid working – c. 1 day per week in office Requirement: You must already hold active UK Security Clearance. Permanent, full-time position We’re hiring an Azure Platform Engineer to join … budget Funded cloud certifications Flexible hybrid working with minimal office requirement Private healthcare and wellbeing support Enhanced parental leave Pension and additional lifestyle benefits Senior Azure Platform Engineer | Azure, Terraform & Kubernetes | Cloud & Platform Consulting ...

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 workflows. ...

Senior Engineering Manager (B2C Web Mobile) London/WFH to £140k Do you have an indepth knowledge of modern, cloud first, software engineering best practices? You could be progressing your career in a senior, technical leadership role at a hugely successful health/wellness company. As a Senior Engineering Manager … actionable outcomes You have strong business acumen, able to balance value, cost, risk and long term sustainability What's in it for you: As Senior Engineering Manager you will receive a comprehensive package: Salary to £140k 26 days holiday Pension Gym membership Private Health and Dental Insurance Access ...

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 that actually gets used ...

Senior Software Engineer Key Technologies: C#, .NET, React, JavaScript, Typescript, AWS, Docker City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET Software Engineer to join their growing team! This … work in the UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a Senior Software Engineer, with expert C#, .NET experience having a direct impact from the get-go. ...

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 You'll Do Build and maintain ...

Senior UI/UX Designer & Frontend Developer - Mobile Figma JavaScript React Global Legal Tech A rare chance to join one of the worlds most respected legal brandspart of the industrys magic circleas they build a next-generation, AI-driven SaaS platform set to transform how global legal teams work. This … organisation is a genuine technology leader, investing heavily in automation, cloud-native engineering (Azure), and modern product delivery. Were looking for a Senior UI/UX Designer & Frontend Developer who thrives at the intersection of creativity and engineering. This is a true 50:50 hybrid role : youll shape the products ...

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 is an opportunity ...

latency, high-frequency trading platform . You will use cutting-edge Java programming techniques so experience in this area is essential . As a Senior Developer, youll not only code but also take on key design responsibilities, shaping impactful projects. You'll mentor junior members of the team, driving innovation ...

Senior Full Stack Engineer - C#, .Net, TypeScript, JavaScript Hybrid, 1-2 days near Liverpool Street Up to £90,000 + bonus + benefits If you enjoy solving complex engineering problems, learning from highly capable peers, and working on a product where your contribution genuinely matters, this is an opportunity ...

Pricing Services and Risk Viewer Senior Developer Location: London - 3 days a week onsite Job Type: Full-time Salary: Competitive A new exciting permanent, Vice President level, Pricing Services & Risk Viewer Senior Developer to join an exciting growing GIT - CMI - Risk FX IT department with a global leading internation bank. … This senior software development position requires a candidate with outstanding skills in C# and TypeScript/React, and a robust understanding of pricing models and risk analytics for both vanilla and exotic FX derivatives. The role involves close collaboration with business analysts, traders, and software engineers to ensure seamless integration ...

Senior Performance Test Engineer Location: UK (Remote/Hybrid) Clearance: BPSS required, SC eligible or preferred Salary - 48k-55k pa Role Overview We are looking for a Senior Performance Tester to deliver hands-on load and performance testing across large-scale digital services and backend applications, with experience of working ...

Senior Software Engineer Key Technologies: C#, .NET, React, JavaScript, Typescript, AWS, Docker City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Commodities Brokerage and they are looking for a Senior C#, .NET Software Engineer to join their growing front office team ...

Senior C# Engineer - .Net Core, AWS Serverless Services, MySQL, APIs, Event Driven Outstanding permanent opportunity to join this global, market leading, B2B SaaS tech business as a Senior C# Backend Engineer with deep expertise C#, .Net Core, MySQL, AWS Serverless Services and event driven architecture. This business is embracing ...

Senior Software Engineer | London | £100,000 | Security | Python Location: London (hybrid) Salary: £90,000 - £100,000 (+/- 10% DOE) + benefits This is a proper backend role, not a support function. You’d be joining a security start-up where the systems you build are the product, powering complex … smart people who care about getting it right. If that sounds like you, or someone you know, drop me an email at imogen@sr2rec.co.uk. Senior Software Engineer | London | £100,000 | Security | Python ...

client is in the Financial Sector and is looking to grow the team with a new Senior Developer. This role can be done remote with weekly meet ups in Central London on a Wednesday. The technology function is around 80 people total and you will work in an Agile team … 8. Client Details Our client is in the Financial Sector and is looking to grow the team with a new Senior Developer. This role can be done remote with weekly meet ups in Central London on a Wednesday. The technology function is around 80 people total and you will work ...

trajectory is ambitious, from zero to seven figures in recurring revenue within its first year and plus over £20million in funding already!! As a Senior Software Engineer, you’ll join a small, high calibre team where ownership is everything. You’ll work primarily on the backend, integrating with LLMs ...

education – making high-quality, personalised learning accessible to everyone. What was once technologically impossible is now within our grasp. We’re looking for a Senior Full Stack Developer to join our growing development team. What you will do 🚀 Design and implement a new high-scale system for millions of users. ...

Senior data engineer (Apache Flink) Role overview You will bring deep hands-on expertise in production Flink on AWS, working closely with a senior FT engineer and AWS stakeholders. A key part of the role is knowledge transfer through pairing, reviews and clear documentation so the capability can be supported ...