23 of 23 Permanent Senior Full-Stack Engineer Jobs in London

Senior Product Engineer, Full Stack - Energy £70,000 to £95,000 Permanent London, hybrid The opportunity Our client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer … business and are pleased to be supporting them again on this important hire. This is a genuinely exciting opportunity for a frontend-strong engineer who wants real ownership, autonomy, and the chance to build products from scratch. They are looking for someone with strong React and TypeScript capability ...

Senior Full-Stack Engineer Introduction Join a specialist platform operating at the heart of telecoms, compliance, and secure business messaging. This is a senior, hands-on role where you’ll take real ownership of a product that underpins trust, validation ...

Senior Full-Stack Engineer (Backend-Leaning) – SaaS + AI Join a seed-stage SaaS startup backed by leading VCs, adopting AI to redefine their product. They’re pre-PMF, mid-pivot, and need a hands-on engineer (~80% coding … help build, define, and scale. 💰 Comp: Up to £100k + strong early stack equity package 🧑 💻 What you’ll do Full-stack engineering, backend-leaning (Next.js FE + BE, Node.js, TypeScript, legacy Python) Collaborate with product & CEO to shape the roadmap Help guide a small ...

RSMB is seeking an experienced and highly capable Senior Full Stack Engineer to play a central role in the design, development, and evolution of our expanding product suite, including Barb Ads Hub, NMO XCM, and our Data Fusion platform. You will join … London, and we are currently operating hybrid working: splitting the week between home and office working. The Senior Full Stack Engineer role: This role sits within the Development team in the Technology department and is critical to delivering scalable, high-performance, data ...

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 ...

Role: Senior Full Stack Engineer (Node/React OR Python/React) Salary: £90,000 – £110,000 + meaningful Equity Location: Central London – Hybrid working (3 days p/w) Key Skills: Node/TypeScript OR Python, paired with React & Agentic … 7+ years of experience with a pragmatic product engineering mindset and strong architectural capabilities Command of TypeScript/Node OR Python for full-stack development, alongside React and maintaining frontend design systems Philosophical alignment with AI-native development, actively using agentic tools like Cursor and Claude ...

About the Role We are seeking a Senior Full-Stack Engineer to join our team and help build the next generation of AI solutions. This is a unique opportunity to be a key technical contributor in a fast-paced, innovative environment where … wear many hats and have significant impact on our product and engineering culture. As a full-stack engineer, you'll work across the entire technology stack—from backend services and data pipelines to infrastructure and deployment. You'll collaborate closely with ...

Senior Full Stack Engineer Role (Typescript)- Up to £100k A fast growing scale up that are making a positive social impact are growing their engineering team! This is a really great opportunity, they are one of the fastest growing companies … give lots away to charity so are doing a lot of good ☺️ They are looking for a Senior Full Stack Engineer to join them at a crucial point in their journey. The Role: Using Typescript end to end, along with AWS, Serverless ...

Senior Fullstack Engineer (AI-Native) — Freelance via Shakers We're hiring a Senior Fullstack Engineer to help build the enterprise backbone of an AI hiring intelligence platform that's redefining recruitment through voice-first, capability-based assessment. You'll join a lean ...

Senior Product Engineer, Full Stack - Energy £70,000 to £95,000 Permanent London, hybrid The opportunity Our client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer ...

About The Role We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems. This role involves mentoring junior … process optimisation initiatives. Communicate complex technical concepts effectively to non-technical stakeholders. About You Professional knowledge and experience Essential Proven experience in full-stack software development, including design, development, testing, and deployment. Some of the languages and frameworks our teams work with: Java Python C#/ ...

Loomery Limited is seeking a Senior Product Engineer to lead technical delivery and standards across client projects in London, UK. The role involves hands-on coding within cross-functional teams and mentoring others, while engaging with emerging technologies. Ideal candidates will have extensive engineering experience, technical ...

Senior Full Stack Engineer (Python/React) -Join a TOP COMPANY!!! Central London | Hybrid (2 days office/3 days home) In partnership with Robert Half Ltd You’ll be joining a top-tier, high-standards engineering environment with strong tenure … genuinely solid technical culture. Permanent opportunity for a Senior Full Stack Engineer to join a scaling, data-driven business building modern analytics platforms. Key Responsibilities: Design and build scalable full stack applications across backend and frontend layers. Develop ...

deliver robust solutions Technology Environment Java and Spring Boot (low-latency) Distributed systems and microservices architecture AI Skills mandatory Angular or TypeScript (full-stack capability beneficial) Cloud and containerisation technologies CI/CD, automated testing, and observability tooling Requirements Strong experience in Java and backend development ...

Senior Software Engineer (Node + React)£85,000 + 10% Bonus + BenefitsLondon, Hybrid (2 days per week in the office) The Opportunity Our client are hiring three Senior Software Engineers to join a growing engineering function that builds technology powering large-scale advertising … media platforms. This is a hands-on senior role for engineers who enjoy thinking about the "why" , not just the "how". You'll help shape technical decisions, guide less experienced engineers, and contribute to building well-designed, scalable systems used across major advertising campaigns. The Challenge ...

Senior Python Engineer | Full Stack | Real-time Data Platform 3 days onsite (nr Oxford) every 6 weeks This is a backend-led full stack role at an early stage technology company building a production grade SaaS platform … maintainability in a live SaaS environment What we are looking for 5 or more years building production SaaS systems as a Software Engineer, with a backend focus Strong Python fundamentals with real production experience in a SaaS context Working ability in React or frontend development more broadly Cloud ...

thoughtfully rather than rewriting it, and being trusted to deliver without heavy supervision, this role will feel unusually well-matched. The role As Senior Fullstack Software Engineer, you will help design, build and maintain the production systems that power Outsmart’s platform. You’ll work closely … systems that matter. The environment We are a small, intellectually serious company. That has advantages and responsibilities. You will: Speak directly with senior decision-makers when needed Operate without perfect documentation Balance speed with long-term maintainability This role suits someone comfortable with autonomy, accountability and cross-functional ...

more effective, accessible, and science-driven. Role Description We’re looking for a full-time Senior Full Stack Engineer with exceptional frontend and product instincts to help shape the next generation of our customer experience. This is not a “ticket … Contributing to technical and product direction across frontend and backend architecture What We’re Looking For: 5+ years of experience as a full-stack or frontend-focused engineer Strong understanding of modern frontend development and product-focused UI/UX Highly proficient in TypeScript ...

repeatable, AI-assisted workflows across data ingestion, analysis, reporting, review, and compliance. We are looking for a Senior Full Stack Engineer to take ownership of both product and infrastructure development. This is a broad, hands-on engineering role for someone ...

services across various use cases, starting with industrial applications. We are looking for a passionate and skilled Senior Full Stack Engineer to join our innovative team in London. Our Mission At Humanoid we strive to create the world’s leading, commercially scalable ...

team operates at pace, with a strong emphasis on ownership, performance, and continuous iteration. The Role - Remote Europe (CET 3 We are seeking Senior Backend focused Full Stack Engineers to join a fully remote, cross-functional team working on high-traffic, production-grade systems. ...

RSMB is seeking an experienced and highly capable Senior Full Stack Engineer to play a central role in the design, development, and evolution of our expanding product suite, including Barb Ads Hub, NMO XCM, and our Data Fusion platform. You will join ...

Benefits 9% pension contribution Stock Options Health Insurance L&D Budget This is your chance to perform the job you love and make a difference in society whilst doing it! Help this one-of-a ...