2,135,520+ Full Stack Software Engineer Javascript React Elixir Jobs in UK — Top Companies Hiring June 2026

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Senior Cards Experience Engineer – EU

Perk is seeking a Senior Software Engineer to join their Cards Experience EU team. You will be instrumental in enhancing the core card spending experience, collaborating with seasoned engineers across European hubs. Your responsibilities will include writing production code, shaping technical designs, and ove ...

Real Time Systems Performance Engineer (JVM & AWS)

Tink is looking for a Systems Performance Engineer to enhance our fraud prevention software. This role involves tuning JVM settings, analyzing logs, and collaborating across teams to solve technical issues. The ideal candidate has a strong background in Linux and system diagnostics, and will drive impr ...

Embedded Electronics Engineer Industrial Placement

BlackBerry Inc. in St. Neots is offering a 12-month industrial placement as an electronics and/or embedded software engineer. You will work on designing, developing, and testing electronic solutions while collaborating with experienced engineers. Ideal candidates are ongoing undergraduate students in engineer ...

Senior Production Engineering Lead

Citigroup Inc. is seeking a Senior Engineer in Production Management to lead the development of critical software solutions. This role offers the opportunity to influence global finance and drive innovation with a focus on clean code and agile methodologies. The candidate will take ownership of technic ...

Lead Structural Design Engineer — Civil & Temporary Works

Barhale Holdings Ltd is looking for a Senior Design Engineer in London to lead and deliver structural designs for civil engineering projects. You will play a critical role in ensuring compliance with safety and quality standards while offering technical support to design teams. The ideal candidate will ...

Senior AI Engineer — GenAI Apps & Client Impact (Remote)

Futurice GmbH is seeking a Senior AI Engineer in the United Kingdom to join their AI & Data team. In this role, you will be designing and building intelligent applications while mentoring junior engineers. You'll engage with clients to help shape AI strategies across diverse industries. The role requir ...

Enterprise AI Engineer — Embed AI in Live SaaS Products

Sivara GmbH in Bracknell is seeking an experienced AI Engineer to help embed AI into established enterprise SaaS products. In this permanent position, you will collaborate closely with product and engineering teams to develop and deploy AI/ML features, managing MLOps including deployment pipelines and model m ...

Senior iOS Core Product Engineer (Remote)

Speechify is seeking a Software Engineer for its iOS Core Product team in London. This role is key to supporting the growth of the app and shaping the user experience with fast-paced decision-making and engineering. The candidate will lead engineering decisions, contribute production code, and work within a d ...

Remote AI Engineer – End to End Dev & AI Tools

Recruit4Mum is seeking an AI Engineer for a 6-month fixed-term contract based in Birmingham. This role is predominantly remote with occasional office attendance required. You will design and build intelligent digital tools to improve outcomes for customers and internal teams. The ideal candidate will h ...

Angular Front End Engineer — 3D Modeling & AI (London)

Trimble is looking for a skilled Angular Front-End Software Engineer to join our SketchUp Habitat team in London. In this role, you will develop high-performance, cloud-based applications that help design professionals visualize eco-friendly structures using cutting-edge technologies. The position requ ...

SVP, Trading Tech & AI Platform Architect

Citi is seeking a Senior Software Engineer (SVP) for the FX Client & Sales Technology team in London. This role involves hands-on design, architecture, and technology platform implementation, driving strategic evolution while managing a global team. The ideal candidate will have extensive capital marke ...

Senior PHP Engineer: Symfony, Cloud & Remote Delivery

MPS, located in Greater London, is seeking a Software Engineer to enhance high-quality film delivery solutions. In this role, you’ll collaborate with internal teams and partners to develop features that improve user satisfaction. Key responsibilities include building scalable applications using PHP and framew ...

DevOps Engineer (Junior/Mid) – Guildford Office

Stratospherec Ltd is looking for a Junior or Mid-Level DevOps Engineer to join their growing team in Guildford. You will play an integral role in supporting the TechOps team, focusing on CI/CD pipeline management, system reliability, and integrating DevSecOps into the DevOps lifecycle. The ideal candid ...

AI Engineer: Agentic AI for Production Systems

RELX INC is seeking an AI Engineer to develop intelligent systems powered by innovative AI technologies. This role involves building and testing AI solutions as part of a cross-functional team, interfacing with stakeholders to ensure the development fits real workflows. Key responsibilities include pro ...

Blockchain Engineer: Tokenization & Multi‑Chain Platform

Ctrl Alt in Greater London is seeking a Blockchain Engineer to enhance the company’s blockchain and tokenization infrastructure. In this role, you’ll design secure smart contracts and integrate blockchain technology into various financial systems. You’ll collaborate with engineers and the product team to ensu ...

ML Runtime Engineer (Senior) – Inference & Rust

Fractile is seeking a Senior ML Runtime Engineer to join our innovative team in either London or Bristol. You will integrate cutting-edge AI acceleration hardware with leading open-source projects such as PyTorch and vLLM, while developing a high-performance Rust runtime for our AI solutions. The ideal ...

Senior Traffic Signals Engineer – Lead Design & Clients (Hybrid)

WSP in the UK & Ireland is seeking a Senior or Principal Traffic Signalling Engineer to lead traffic consultancy projects in various UK locations including Cardiff. You will utilize your expertise in traffic signals, manage client relationships, and supervise tasks performed by junior colleagues in a hybrid w ...

Senior Principal Technologist Pro Services & AI Platforms

Amazon is seeking a Senior Principal Software Development Engineer to drive the technical strategy for the P&S Engineering Services portfolio. The ideal candidate will possess a robust background in AI/ML applications, cloud-native systems, and DevOps practices, influencing technical decisions at the highest ...

Senior Angular Frontend Engineer — Enterprise Web Apps (Hybrid)

Spica Technologies is looking for a Frontend Software Engineer to join their team in Birmingham. You will be responsible for designing and developing modern web applications using Angular and TypeScript. The role involves working closely with backend engineers and UX designers to create user-friendly experien ...

Rust Systems Engineer Teleoperation Infra + Equity

Jack & Jill, a venture-backed startup in London, is seeking a Software Engineer to build low-latency infrastructure crucial for robotic teleoperation. You'll work closely with the founders to develop systems that ensure real-time data transmission for humanoid and autonomous vehicles. The ideal candida ...

Embedded AI Engineer, Google Cloud Consulting

Google Inc. is seeking a Forward Deployed Engineer in Greater London to build and integrate AI-driven solutions within customer environments. This role bridges cutting-edge AI products with practical deployment, requiring a Bachelor's degree in Engineering or Computer Science and expertise in software develop ...

Senior .NET Engineer: APIs, Event Driven & Scalable Systems

United States Digital Space LLC in Greater London is seeking a Senior Software Engineer to design and deliver high-quality C#/.NET applications within an agile team. The role involves hands-on programming, collaborating on platform capabilities, and ensuring high-quality code through CI/CD practices. T ...

Java & Clojure Engineer for Fintech Data Platform

S&P Global is looking for a Java/Clojure Engineer to join their OTC Derivatives Data team in Greater London. You will develop new software and enhance existing applications, collaborating closely with product specialists. The role requires a depth of knowledge in Java and a willingness to learn Clojure. < ...

Forward Deployed AI Engineer — Enterprise AI Delivery

United States Digital Space LLC is seeking a Forward Deployed Engineer to bridge the gap between frontier AI products and production-grade solutions. You will be responsible for the architecture, coding, and implementation of AI systems, ensuring they meet customer needs effectively. This role requires ...

Quality Engineer: Test Strategy & Automation Coach

Aberdeen is seeking a Quality Engineer to embed quality throughout the software development lifecycle. In this role, you will work with various teams, championing best practices in testing and quality assurance. You will design automated tests, mentor developers, and ensure high standards are maintained throu ...

Production Ready AI Engineer — Transformation Lead

MBN Solutions is seeking a Forward Deployed Engineer based in London to drive AI transformation across investment operations. This hands-on role involves direct collaboration with senior stakeholders to create AI-enabled workflows that transform business processes. The ideal candidate will have strong ...

Senior Trading Tech Lead: Low Latency FX & Rates

Citigroup Inc. is seeking a Senior Software Engineer (SVP) in London to lead the design and implementation of a robust technology platform for the STIRT business. This role demands expertise in capital markets, focusing on modernizing trading systems and enhancing AI integration within engineering work ...

Aerospace Product Design Engineer — Prototyping & Lighting

Expert Employment is seeking a Product Design Engineer to join an innovative Aerospace Engineering team in Guildford, UK. The role involves designing products by using cutting-edge technologies while ensuring proper qualifications for aerospace applications. Candidates should possess experience in design and ...

Electrical Design Engineer – Building Services (UK Projects)

Criterion Capital is looking for an experienced Electrical Design Engineer to join their Construction MEP division in Greater London. You will be instrumental in delivering complex projects across residential, hospitality, and mixed-use sectors, ensuring compliance with industry regulations and standards. </p ...

Lead SDET: AI Driven Backend Testing & CI/CD Leader

JPMorganChase is seeking a Lead Software Development Engineer in Test (SDET) based in Greater London. In this role, you will design, build, and support automated testing frameworks for backend applications. Collaborate with developers to ensure systems are robust and scalable while driving innovation and effi ...

Highways Digital Engineer M60 Simister Island Project

Costain Group is searching for a Digital Engineer for the M60 Simister Island project located in Bury, England. This role involves supporting Digital Engineering implementation throughout the Construction & Handover stages and collaborating with the project team and suppliers for optimal client outcomes. ...

Power Systems Engineer — Grid Studies & Renewables

Jacobs is looking to recruit a Power System Engineer to join our Future Energy & Power Systems team in Leeds, UK. The role involves modelling and conducting power system studies for major clients worldwide, focusing on thermal, renewables, storage, transmission, and industrial systems. The successful c ...

Senior .NET AWS Engineer: Cloud Native Microservices Lead

Daniel James Resourcing Ltd is looking for a Senior Software Engineer to join their team in Manchester. This role involves contributing to the migration of a .NET Framework monolith to AWS-native microservices, designing scalable backend services, and driving CI/CD practices. The position offers a 6-mo ...

Rust Systems Engineer Teleoperation Infra + Equity

Jack & Jill, a venture-backed startup in London, is seeking a Software Engineer to build low-latency infrastructure crucial for robotic teleoperation. You'll work closely with the founders to develop systems that ensure real-time data transmission for humanoid and autonomous vehicles. The ideal candida ...

Senior Backend Engineer Real Time SaaS & Scale

Rive is looking for a Senior Software Engineer to join our Backend Team in London. In this role, you will develop core backend services that support the Rive editor and ensure a seamless user experience. You will leverage your expertise in Node.js and cloud infrastructure while collaborating with a talented t ...

DV Cleared Senior AI Engineer

DV Cleared Senior AI Engineer Location: London (Hybrid) Contract Type: Contract Day rate: 700 Outside Clearance Required: Active UK DV Clearance (Mandatory) The Opportunity We a ...

Staff Product Engineer AI Driven, Scalable Systems Leader

Elea Ecuador is looking for a Staff Product Engineer based in London to lead technical initiatives in building top-tier software solutions. This role requires a combination of excellent technical skills and proven leadership experience. The ideal candidate will contribute to optimizing business delivery while ...

Research Scientist: Verified Code Gen & Lean Proofs

Google Inc. is hiring for an experienced engineer focused on formal methods and AI systems. The role involves designing systems that produce formal proofs of code correctness and collaborating across teams in London, UK. A PhD in computer science and experience in static analysis or software verification are ...

DV Cleared Senior AI Engineer

DV Cleared Senior AI Engineer Location: London (Hybrid) Contract Type: Contract Day rate: 700 Outside Clearance Required: Active UK DV Clearance (Mandatory) The Opportunity We a ...

Studio TechOps Engineer: Production Systems & Support

Amazon is looking for a Technology Operations Engineer to be a key player in supporting their MGM Studios. This role involves troubleshooting and providing technical support to ensure seamless operations for content production. You will engage with both production personnel and technical teams, addressing iss ...

Automation Engineer

Were recruiting for an Automation Engineer. Please read on if you're considering your next challenge. Role This is a programming and commissioning role, the main role will be focused on developing and implementing software on systems and all aspects of install/commissioning ...

Agentic AI Engineer (.NET) Contract

Agentic AI Engineer (.NET) - Contract Client: Global Technology Leader - NASDAQ Listed Location: Hybrid - Bristol / 1-2 Days Per Week Duration: 6 months + Intention to extend (Greenfield Multi-Year Programme) ...

Senior C# Developer .Net Core FinTech

Senior C# Developer / Backend Software Engineer (C# .Net Core) *Newcastle onsite* to £110k+ Are you a senior, backend focused C# Developer with a strong academic background? You could be working on complex, high impact systems at a growing FinTech scale-up with solid financial ...

Structural Engineer

The Opportunity An exciting opportunity has arisen for an experienced Structural Engineer to join a growing multidisciplinary engineering consultancy based in West Yorkshire. You will apply your technical expertise across a varied portfolio of commercial and ...

Senior C++ Engineer – High Performance ML & Trading

Hunter Bond is seeking a C++ 20/23 Software Engineer to join an elite tech-driven trading firm in London. This role offers the chance to build high-performance solutions and work on cutting-edge projects with top technologists in a collaborative environment.With up to £200k compensation and a hybrid wo ...

Senior RL Data Engineer: End to End Pipelines & QA

United States Digital Space LLC is seeking a Senior Engineer in Greater London to develop and manage data pipelines for AI systems. This role involves significant responsibilities, including ensuring the quality of reinforcement learning data, collaborating with various teams, and innovating operational frame ...

Hybrid DevEx Security Engineer

Motorway is looking for a Developer Experience Security Engineer to enhance security protocols within our rapidly growing technology team. You will design and implement secure platform capabilities, collaborate with engineers to ensure security is embedded into software development, and automate security proc ...

Senior Backend Engineer, Dashboard Platform & Infra

Algolia is looking for a Senior Software Engineer for their Dashboard Platform team, focusing on infrastructure automation. You will work on core dashboard features and collaborate closely with teams to enhance developer experience. The role requires expertise in modern infrastructure management, speci ...

Lead Building Envelope Design Engineer

Sisk is seeking an experienced Senior Design Engineer to join their Engineering Services team in Frogmore, England. This role involves providing technical expertise, leading design tasks, and ensuring high-quality deliverables for multi-disciplinary construction projects. The ideal candidate should hav ...

Electrical Engineer – Building Services, Decarbonisation

Joshua Robert is hiring an Electrical Engineer in London to lead the design and coordination of electrical building services projects. Ideal candidates will have experience within electrical building services and be degree qualified in a relevant field. The role offers significant career progression opportuni ...

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    Full Stack Software Engineer Javascript React Elixir Jobs in United Kingdom Job Search Guide, Trends and Insights