2,234,662+ Full Stack Software Engineer Javascript React Elixir Jobs in UK — Top Companies Hiring June 2026

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Senior Python & C# Engineer Semantic API & Flexible Hours

Limelight Health is looking for a Software Engineer III with strong Python and C# skills for its Greater London location. In this role, you'll develop and maintain a semantic search API and implement best coding practices while working independently on complex challenges. The ideal candidate will have ...

Senior Financial Systems Architect

Galatea Associates, located in Greater London, is seeking an experienced Financial Software Engineer to join our innovative team. This role involves defining and architecting systems used to facilitate access to liquidity in the capital markets. You will have the opportunity to mentor junior engineers and tak ...

Lead Principal Engineer Global Markets Risk Platform

Bank of America in London is seeking a Principal Engineer experienced in developing elegant and maintainable Python code. This role requires strong technical expertise and a solid understanding of investment banking in global markets. The successful candidate will lead initiatives and closely collaborate with ...

Senior Java Engineer — AI/ML, AWS, Hybrid (Notting Hill)

Bentley Whitaker Search and Selection is looking for a Senior Java Software Engineer to join their fast-growing team in Notting Hill. The role involves developing innovative artificial intelligence solutions using cutting-edge technologies. Applicants should have over 5 years of experience in Java, kno ...

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 ...

Senior Android Architect & Tech Lead (Kotlin/Jetpack)

Marks and Spencer is seeking a Staff Android Engineer to drive the technical vision across teams. This role involves mentoring engineers, ensuring modern, scalable Android solutions, and enhancing engineering standards. As part of the M&S Software Engineering, you'll work with various teams, pushing th ...

Frontend Engineer – Shopping Experience (Hybrid)

On the Beach in Manchester is seeking a Mid-Level Software Engineer IC2 to enhance the customer journey for holiday packages. You will build intuitive customer-facing applications and collaborate with marketing and product teams to ensure a seamless end-to-end experience. The role offers flexible worki ...

Senior Staff Backend Engineer – Distributed Systems

Metropolis Technologies in Abbot's Salford is seeking a Senior Staff Software Engineer for their AeroParker team to lead technical strategy and architecture for their e-commerce platform. You'll engage in high-impact initiatives and mentor senior engineers while ensuring systems scalability and security. ...

North London Field Appliance Engineer – Up to £50k OTE

Occupop is seeking a Field-Based White Goods Engineer for North London to perform fault diagnosis and repair on domestic appliances directly in customers' homes. The role offers a competitive salary between £34,000 and £43,000, uncapped bonuses, and up to 33 days holiday. Responsibilities include diagn ...

AI Driven Product Engineer for Health Impact

Pelago is seeking a Product Engineer in Greater London to develop and deliver innovative solutions for behavioral health care. This role emphasizes AI-augmented engineering and cross-functional collaboration, allowing you to own projects from discovery to rollout. A strong technical foundation in software dev ...

FPGA Engineer & Consultant — Pioneering Defence Tech

Awerian Ltd in Cambridge is seeking an FPGA Engineer - Consultant to engage in innovative projects that enhance UK Defence and Homeland Security. The role involves tackling real-world challenges through collaboration with multi-disciplinary teams. You will manage the product life cycle from concept through im ...

OT Cybersecurity Engineer for Nuclear Plant Systems

ALTEN in Heysham is seeking an Operational Technology Engineer to join our team in the Nuclear sector. In this role, you will support the maintenance, configuration control, and cyber resilience of OT systems, ensuring they remain secure and compliant. The ideal candidate will have a degree in Software ...

Power System Studies Engineer — Remote & Flexible

Airswift is hiring a Power System Engineer to join their dynamic team in Surrey, United Kingdom. This role involves conducting power system studies and working with advanced software tools. You will have the opportunity to enjoy flexible working patterns, including one day working from home. The ideal ...

Lead Quality Engineer – AI Driven Cloud & QA Strategy

Cox Automotive Europe is seeking a Lead Quality Engineer to oversee quality engineering in a significant transformation project. You will shape teams through the shift from legacy systems to modern, cloud-native architectures, while integrating AI practices. The ideal candidate will provide leadership, ...

Senior AI Silicon Verification Engineer

IC Resources is looking for a Silicon Verification Engineer to join their team in Greater London. This role involves ensuring the verification of complex digital systems for next-generation AI products, contributing to high-impact projects and influencing product quality from early development stages. ...

Lead Control Systems Engineer — Design to Commission, Early Friday Finish

NMS Recruit Ltd t/a Russell Taylor Group is seeking a Senior Control Systems Engineer based in Rotherham. The role involves leading control system projects from design through commissioning, developing PLC and SCADA software, and mentoring junior engineers. A key benefit is an early finish on Fridays. ...

Senior ML Engineer: Real World Impact in Regulated Systems

Energy Jobline ZR is seeking a Senior Machine Learning Engineer to tackle complex machine learning problems and lead end-to-end delivery in a secure environment. Candidates should have a strong background in applied mathematics and software engineering, along with exceptional Python skills and experience with ...

Field IT Engineer Audits, Onsite Support & Networking

Radius Limited in Belfast is seeking an experienced IT Support Engineer who will assess, document, and optimize IT infrastructure across various customer sites. This role combines onsite IT support, hardware/software troubleshooting, and compliance audits. Candidates must have over 5 years of relevant experie ...

Cloud Native Modernization Lead (Java/Microservices)

Bestway-Group is searching for a Modernization Engineer Lead to oversee the re-design of in-house applications. This role involves close collaboration with the Principal Architect while mentoring developers. The ideal candidate will have over 10 years of Java development experience, particularly in Spring Boo ...

Pioneering Research Engineer, Multi Agent Learning

Google Inc. is seeking a Research Engineer in Multi Agent Learning at DeepMind in London. You will leverage your expertise in software development, particularly in Python and C++, to contribute to novel algorithms and large-scale research projects. This role demands collaboration with researchers, optimizing ...

Lead DevOps Engineer: Secure, Scalable Platform Architect

Elliptic Enterprises Ltd. in Greater London is seeking a Lead DevOps Engineer to elevate their DevOps practices. This role combines technical expertise with team leadership, requiring a strong background in Kubernetes and cloud infrastructure. The successful candidate will define the automation roadmap ...

Senior Scientist/Engineer Time & Frequency Systems Lead

Rullion is seeking a Senior Scientist/Engineer to join a multidisciplinary team focused on developing innovative Time and Frequency systems. This pivotal role involves leading projects, designing advanced measurement systems, and collaborating with global experts to deliver high-quality solutions. The ...

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 ...

Electrical Engineer LV/MV Systems, Design & FAT Expert

E3 Recruitment is seeking an experienced Electrical Engineer to join a global Engineering & Manufacturing company in Wyke, England. The role involves designing and delivering electrical solutions for LV and MV systems while providing technical support throughout the project lifecycle. The ideal candida ...

Controls Engineer – PLC Design & Commissioning (Bristol)

Energy Jobline ZR in Bristol is seeking a Controls Engineer to join their team at a state-of-the-art facility. The role involves designing and testing electrical control systems and software, ensuring compliance with industry standards. The successful candidate will benefit from first-class training and devel ...

Platform Architect & Principal Engineer (Go/Python)

Harvey Nash is looking for a Principal Software Engineer in Greater London to lead platform architecture for a high-growth tech company. The role involves mentoring senior engineers and shaping technology direction while remaining hands-on. Ideal candidates will have extensive experience in backend engineerin ...

AI Driven SDET Engineer for Quality & Testing

Tata Consultancy Services is seeking an SDET Engineer (AI‑enabled Testing) in Manchester. This role involves combining manual, automated, and AI-assisted testing approaches to ensure high quality in modern engineering environments. You will be responsible for designing test strategies, developing autom ...

Python Engineer: Real Time Data Pipelines for Trading

Cedar Cares, Inc is looking for a Python Software Engineer to help build and expand their data pipeline and event streaming functionality for the largest equities exchange in Europe. This role involves collaborating with business development and sales teams to create reliable, testable Python systems to suppo ...

Cloud AI Engineer — Production Grade Agentic Solutions

GOOGLE is seeking a Forward Deployed Engineer to bridge frontier AI products with customer environments. This role emphasizes hands-on development in complex AI applications, ensuring seamless transitions from prototypes to production. A background in software development, especially with Python, and AI syste ...

AI Product Engineer – LLM Powered Copilot

Elliptic is seeking an AI Engineer to join the Automation Forge team, focusing on building AI-powered features that enhance compliance investigations. Responsibilities include developing LLM-powered tools and collaborating with product and engineering teams to bring innovative solutions to life. The id ...

Lead Controls Engineer: PLC/SCADA & HMI Lead

BGEN Ltd is seeking a Lead Engineer to work on complex control system projects in Stafford, England. You will manage your team’s workload while collaborating with the Project Manager to achieve project milestones. The ideal candidate will have versatile systems engineering experience and proficiency in PLC & ...

Graduate Structural Engineer – Heritage & Luxury Builds

Size Group is looking for a Graduate Structural Engineer to support the design team in developing safe and efficient structural solutions across projects for their sister companies. This role will involve using design software such as AutoCAD and Revit, ensuring designs comply with codes, and assisting in str ...

Hybrid Power Systems Engineer — ETAP/EMT Studies

Airswift is seeking a Power System Engineer based in Surrey, United Kingdom, to join our team for an exciting role in the power industry. This position entails conducting power system studies, including load flow and short circuit analyses, while providing oversight to third-party vendors. The ideal ca ...

AI Field Engineer: Demos, Integrations & Value Delivery

Tessl is seeking a Field Engineer to join our dynamic team in London. In this role, you'll build field engineering processes, own technical sales relationships, and help customers maximize the value of AI-native software development. The ideal candidate has over 5 years of relevant experience in technical sal ...

Senior Embedded C++ Engineer – Defence Systems (On‑Site)

ALTEN is seeking a Senior Embedded C++ Engineer in Crawley, UK to develop advanced software for communication systems used in defence. This role involves working on high-reliability technologies that require strong knowledge of secure coding practices and performance optimisation. The ideal candidate h ...

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 ...

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 ...

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 ...

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 ...

Product Engineer — AI Driven Health Tech (Hybrid NYC)

Pelago, a leading virtual clinic in Substance Use Management, seeks a Product Engineer to drive innovation in healthcare delivery. This hybrid role involves close collaboration with product, design, data, and clinical teams to build secure and effective software solutions. Ideal candidates should possess stro ...

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 ...

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 ...

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 ...

Embedded AI Infrastructure Engineer

Redpanda Data is looking for a Forward Deployed Engineer to build production-quality agents and data pipelines directly at customer sites. You will work closely with customer teams, ensuring that integrations are effective and can be maintained post-engagement. The ideal candidate has a strong backgrou ...

Principal ML Engineer Lead Production ML & Platform

Hiscox Underwriting Group Services Ltd (HUGS) is seeking a Principal Machine Learning Engineer to lead the technical strategy for production ML systems in the London/York area. This position requires extensive experience in machine learning engineering and an ability to influence the adoption of AI within the ...

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 ...

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 ...

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