24 of 24 Permanent Senior Full-Stack Engineer Jobs in London

Location – London (Waterloo) Salary – £70k – £85k samuel.robinson@forsythbarnes.com Senior Full-Stack Engineer We’re looking for a Senior Full-Stack Engineer to join an established development programme building and evolving a production-critical internal … long-term, actively evolving system where performance, reliability, and maintainability are key . You’ll join a highly experienced team of senior engineers and QA specialists, working in an environment that values technical ownership, autonomy, and thoughtful engineering decisions . What you’ll be doing Designing, building ...

glass in the sink, load the dishwasher. What it takes: The Senior Software Engineer (back-end/Full-stack) position ensures the delivery of quality software solutions to meet the technical challenges the business faces. They will play a crucial role … delivering functionality in the platform, solving technical challenges, and maintaining a high level of quality. This position requires a strong technical engineer who can deliver substantial value to an engineering team. The Senior Software Engineer is a key driver of success for Onda, responsible ...

Senior Full-Stack Engineer/Software Developer/JavaScript Engineer (Node.js/React/Next.js – AWS Serverless) London (Hybrid – Farringdon Tues/Weds/Thurs) £85k–£90k + Bonus + Excellent Benefits Discretionary bonus (10%), Private Healthcare, 25 Days holiday … particularly interested in engineers who enjoy owning both the frontend experience and the Node.js APIs behind it. You’re a thoughtful, solutions-driven engineer who cares about architecture, performance, scalability, and long-term product impact. You don’t just close tickets, you take ownership, think systemically, and write ...

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 ...

About the Role As a Senior Engineer and Team Lead at Futuria, you'll own the delivery, quality, and culture of a core engineering team building our AI-driven platform. This is a hands-on technical leadership role where you'll split your time between writing … experimentation, and knowledge sharing Work with Head of Engineering on architecture, partner with product and design teams About You You're a strong senior engineer ready to lead a team but who still loves writing code. You have solid technical skills, opinions about quality and architecture ...

Senior Full Stack Engineer (Frontend Focus) Location: London (Hybrid) 1 day a week Salary: up to £90,000 Evantis Technology is working with a fast-growing digital marketplace platform operating in the creative/consumer space, helping them hire a Senior … high-impact features Contributing to technical discussions around architecture, scalability and product direction What they’re looking for Strong experience as a full-stack engineer with a frontend bias, particularly with modern JavaScript/TypeScript frameworks Comfortable contributing across both frontend and backend services ...

Senior Full Stack Engineer/Developer (TypeScript Elixir AWS) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could … progressing your career in a senior, hands-on Full Stack Engineer role at a successful and profitable energy trading market data scale-up. What's in it for you: Competitive salary, to £100k + Significant Equity Hybrid working (3 days London office ...

Senior Fullstack Software Engineer Location: London (3 days in the office) Contract Type: Permanent Salary: Up to £110,000 (DOE) plus stock options, private medical/dental, and £1,200 L&D budget Build fullstack platforms that generate real social impact globally, from user-facing experiences … fastest-growing companies in the UK, combining commercial success with meaningful social good. They're looking for a fullstack software engineer to join their London team and help build platforms that have already had a huge impact on the world. If you have 4+ years of professional software ...

Senior Fullstack TypeScript Engineer – AWS Cloud Location: London | Hybrid We are looking for a Senior Fullstack TypeScript Engineer to join a fast-paced team building and operating mission-critical insurance applications . This is an opportunity to work on cutting-edge technology … Infrastructure as Code – Terraform CI/CD – GitHub Actions Soft Skills – Strong communication, collaboration, and problem-solving; self-starter attitude Ideal Candidate Independent engineer who can hit the ground running Passionate about building scalable, reliable, cloud-native applications Comfortable in a fast-moving, Agile environment Ready to take ...

Join an elite engineering team building a high‐performance trading platform. Are you a seasoned Full‐Stack Engineer who thrives in highly technical, autonomous environments? Do you love designing reliable, long‐lived systems and solving complex performance challenges? A leading engineering organisation is hiring … Senior Full‐Stack Engineer to join an established trading platform development programme for a major enterprise client. Although the wider business is recognised for distributed ledger and advanced cryptography work, this role focuses on a non‐blockchain, production‐critical trading platform built ...

Senior Fullstack Engineer: Cyber Startup Location: London or easy commute for hybrid setup We're partnering with a well-funded, cybersecurity intelligence company building a next-generation third-party and supply chain risk platform. The Opportunity You’ll work across the stack (backend-leaning ...

large financial services organisation is seeking a Senior Backend Engineer to join a high-performing digital engineering function. This role sits within a customer-facing mobile product environment, delivering secure, scalable solutions at scale. Working across two product teams alongside a dedicated DevOps function, you will ...

Senior/Lead Full Stack TypeScript Engineer 📍 Remote/Hybrid 💰 Up to £130k + Up to 0.3% Equity We’re looking for a Senior/Lead Full Stack TypeScript Engineer with 5+ years … real product impact Work closely with experienced founders and operators Competitive salary and equity Flexible working environment If you're a strong TypeScript engineer who enjoys building in high-growth startup environments, apply directly or reach out to learn more. ...

potential path to a permanent role with equity. Role Description This is a contract role for a Senior Full-Stack Engineer. The candidate will design, develop, and deploy a platform that integrates multiple third-party APIs, normalises inconsistent data formats across jurisdictions, and presents … party APIs and handle inconsistent external data. Experience in front-end development, building functional dashboards and user-facing portals. Strong background in full-stack development, with the ability to own an entire product from infrastructure to UI. Proficiency in Node.js or Python, React, PostgreSQL, and AWS. ...

recognized digital product studio that sits at the sweet spot of high-end aesthetic design and hardcore engineering. They're looking for a Senior & Lead Full-stack Engineer to join the growing function. This isn't a "ticket-taking" role. This ...

Senior Fullstack Engineer. Fully remote or hybrid - London £80,000 - £100,000 "If being too popular is their biggest problem, they're in a pretty good place." That's a quote from the FT! Founded just a few years ago, this company has grown into a global cultural … side of the business whilst continuing to see huge success on their marketplace. We are supporting the hiring of two senior fullstack engineers (70% ish front end) You'll: Lead development of high-performance Next.js applications Design scalable APIs (GraphQL a plus) Own code across the stack ...

Senior Full Stack Engineer/Developer (TypeScript Elixir AWS) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could … progressing your career in a senior, hands-on Full Stack Engineer role at a successful and profitable energy trading market data scale-up click apply for full job details ...

Senior Full Stack Data Engineer – Decho Group (Part of Accenture) About Decho Group Decho Group is a fast-growing Tech and AI consultancy, founded to solve complex data challenges for governments and enterprises. We specialise in Palantir technologies, advanced analytics … team that thrives on curiosity, collaboration, and bold thinking, working on projects that genuinely change lives and industries. The Role We’re seeking Senior Consultant Engineers who want to apply their technical mastery in AI consultancy and Palantir engineering while shaping the future of data-driven decision-making. ...

A great energy client based in London is looking for a Full Stack Python Engineer. Fantastic benefits, bonus, training, events, cycling scheme, pension, free breakfast and much more! If you’re ...

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 ...

launch, and we operate like a top-tier creative engineering studio: small team, high taste, high ownership, low bureaucracy. We’re hiring a Senior Fullstack engineer to build the enterprise backbone that makes all of this possible: high-concurrency APIs, event-driven systems, and reliability foundations … high-impact areas: Enterprise-grade architecture Standardised patterns from intake → build → QA → deploy → measure. Secure by default, GDPR-safe, compliance-ready. Full-stack workflow automation Scalable GraphQL APIs, integrations, event-driven systems, monitoring/logging, error handling, and documentation that scales beyond you. What ...

versatile full stack engineer who thrives on variety and innovation? We’re hiring two engineers to join a newly formed Special Operations team — dedicated to building out initiatives that can’t be supported by busy delivery teams. Think of this as the Swiss Army ...

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

that redefines what’s possible in fertility care. Join wawa and help transform millions of families’ lives. Who you are You are an engineer who thrives under pressure, embraces challenge, and seeks to push the boundaries of what’s possible. Long hours and high expectations don’t intimidate ...