2,336,271+ Full Stack Software Engineer Javascript React Elixir Jobs in UK — Top Companies Hiring June 2026

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Senior Ruby Engineer

What You’ll Do Design and implement scalable, high-performance backend systems to power our e-commerce experience. Build and maintain interfaces that support our frontend, mobile, and third-party integrations. Be very experienced working with pull, push models for data p ...

Senior Embedded Software Lead DO 178C (Aerospace/Defense)

Leonardo Worldwide Corporation in Luton is seeking a Lead Software Engineer to provide technical leadership within critical software components for Electronic Warfare and Future Combat Air programmes. The ideal candidate will have extensive embedded software engineering experience and strong capabiliti ...

Software Developer Apprentice Level 4 (Hybrid, Mentored)

A UK government agency is offering a Software Developer/Engineer Apprenticeship to work on modern digital platforms and support key government services. This role includes developing software applications under supervision and participating in code reviews. Candidates should possess a Level 3 Software Developmen ...

C#/.NET Engineer — Hybrid Role Driving Scientific Automation

A fast-growing technology company in South Cambridgeshire is looking for a C#/.NET Software Engineer. In this role, you will design and build high-quality software across various environments while working alongside talented engineers. Responsibilities include writing impactful code for real machines and mentori ...

Acoustic Engineer

Acoustic Engineer – LondonSalary: £27,000 - £35,000Aztrum is currently working with a specialist international environmental consultancy that is looking to appoint an Acoustic Engineer to join its growing UK team.This is a varied role that combines environmental acoustics consultancy with sof ...

Graduate Acoustic Engineer

Graduate Acoustic Engineer – LondonSalary: £27,000 - £30,000Aztrum is currently working with a specialist international environmental consultancy that is looking to appoint a Graduate Acoustic Engineer to join its growing UK team.This is a varied role that combines environmental acoustics con ...

Senior AI Engineer

Job DescriptionAs Senior AI Engineer you will be the technical practitioner within the AI engineering function, leading complex technical delivery of production-grade AI applications whilst mentoring and directing the engineering team.You will be building AI applications that ...

Junior Product Security Engineer

The Role As a Product Security Engineer Analyst, you will help embed security into our product development lifecycle, handle vulnerability management, and collaborate across teams to improve security practices across Trainline’s digital products. What You’ll Do Support Secure D ...

Senior AI Engineer

Job DescriptionAs Senior AI Engineer you will be the technical practitioner within the AI engineering function, leading complex technical delivery of production-grade AI applications whilst mentoring and directing the engineering team.You will be building AI applications that ...

Climate Tech QA Engineer Automation & API Testing

The Science Based Targets initiative (SBTi) is looking for a Software Test Engineer to ensure high-quality technology infrastructure within the organization. This full-time position in London emphasizes improving testing practices while collaborating closely with developers to meet business needs and c ...

Motion Control & .NET Automation Engineer

A leading recruitment agency is seeking an Automation Engineer to design high-performance automation solutions in Manchester. The ideal candidate will have experience with Siemens Step 7 and .NET applications, and will thrive in fast-paced environments. Responsibilities include developing control software and in ...

AI Engineer – Deploy & Integrate Production AI

Java Script Works is looking for an AI Engineer in London, United Kingdom. This role emphasizes deploying and integrating AI models into production environments, utilizing Python or TypeScript. Ideal candidates are experienced software engineers with strong knowledge of Python and/or TypeScript. Compen ...

Senior Java Engineer Kubernetes & Spring Boot Expert

Golang Works is seeking a Principal Software Engineer with 8+ years of experience in backend development, particularly in Java and Spring Boot. The role is based in London, United Kingdom, and is a full-time position. While specific benefits are not mentioned, the company offers competitive compensatio ...

AI Systems Optimisation Engineer — Boost Data Center Performance

Stars Arena is looking for a Systems Optimisation Engineer based in Greater London. This role involves developing software for test automation, particularly using Python or C++. Candidates should also have experience with metaheuristic optimisation techniques. The position offers a full-time commitment. While co ...

Lead Power Systems Engineer — CIM/CGMES, Java & Git

Aspen Technology, Inc. is seeking a Principal Power Systems Engineer in Glasgow, United Kingdom. The ideal candidate will have expertise within the electrical utility industry, specifically using CIM and CGMES standards, and proficiency in Java programming. This full-time position demands good experience with Gi ...

DevOps Engineer CI/CD, AWS & Automation

Point of Rental Software is seeking a skilled DevOps Engineer to advance their career within a dynamic environment. The ideal candidate will have experience in scripting with Bash or Python and a strong background in AWS technologies. You will be integral to deploying applications globally while workin ...

Senior Python Engineer Data Pipelines & AWS (Edinburgh)

Stars Arena is seeking a Senior Python Engineer located in Edinburgh, United Kingdom, to lead software engineering initiatives and build data pipelines. The ideal candidate should have extensive programming experience in Python and strong knowledge of Amazon AWS. This full-time role offers an opportunity for own ...

DIG Test & Acceptance Engineer

Our client, a leading organisation within the Defence & Security sector, is currently seeking a Test & Acceptance Engineer for a contract position based in Christchurch. This role is pivotal in supporting a fully integrated command and control system for the Ministry of Defence (MoD). This extensive syste ...

Graduate Mechanical Design Engineer – Aero/Med Devices (Electric Car Scheme)

A leading manufacturer in Tewkesbury is seeking a motivated Graduate Mechanical Design Engineer to develop solutions for aerospace and medical projects. Responsibilities include designing engineering solutions and supporting manufacturing processes. Ideal candidates will have a degree in Mechanical Engineering a ...

AI Infra Engineer Scale & Collaborate with R&D

Harmonic is seeking a talented Software Engineer in Greater London to bridge the gap between AI research and product development. The ideal candidate should have a BS in Computer Science or related field, along with 2+ years of experience in software development. Responsibilities include collaborating with AI re ...

Lead Technology Consultant (Remote)

**Your role at Dynatrace** In this role, you will be responsible for delivering a wide range of services that are based on the Dynatrace Unified Platform, from deployment and training to long-term managed services. To ensure new consultants are sufficiently equipped for success, Dynatrace Services provi ...

Snr. Technical Product Engineer Cortex

Snr. Technical Product Engineer - Cortex Snr. Technical Product Engineer - Cortex 2 weeks ago Be among the first 25 applicants Our MissionAt Palo Alto Networks everything starts and ends with our mission: Our MissionAt Palo Alto Network ...

Affiliate Automation Tester

Get AI-powered advice on this job and more exclusive features. We are recruiting for an Affiliate Automation Tester for a contract to start ASAP. On-site presence required in Leeds 2 days per week. Day rate: up to £350 Who We Are AND Digital is a tech company focused on ac ...

Power Platform Developer SC Cleared

Power Platform Developer - SC ClearedLocation: London / Hybrid (50% office attendance across the month)Duration: 6 Month ContractPlease note: an active SC Clearance is required for this positionOur high profile Banking client is looking fo ...

Power Platform Developer SC Cleared

Power Platform Developer - SC ClearedLocation: London / Hybrid (50% office attendance across the month)Duration: 6 Month ContractPlease note: an active SC Clearance is required for this positionOur high profile Banking client is looking fo ...

Static Code Analysis Engineer

The aspiration of startups - Tech Unicorn status. This organisation has the vision and the VC backing to be that. A clear road map and massive investment from the organisation who went in early doors on the likes of Spotify and Klarna - these guys know a diamond when they see one. You’ll join the th ...

Transport Planner / Coordinator

We’re working with a global logistics company who is looking to appoint an experienced Transport Planner / Coordinator to join their busy transport operation in Stanford-le-Hope. This is a key role within the planning team, responsible for ensuring the efficient scheduling and movement of goods across the UK and ...

Staff Engineer – Labyrinth Screening (Remote, SaaS Scale)

A data and software solutions company is seeking a Staff Engineer to lead engineering efforts on their SaaS platform. You'll design scalable software, collaborate with cross-functional teams, and ensure high-quality architecture. Ideal candidates possess extensive experience in software engineering, big data pro ...

Quantum Systems Engineer: Low Latency & Observability

Metric is looking for a Software Engineer to develop and maintain the software for next-generation quantum computing systems. Collaborating with software, hardware, and research teams, you will build high-performance systems that drive innovation. The ideal candidate will have strong Python skills, exp ...

Backend Engineer Flexible Hours, Secure & Scalable

RELX is seeking a Software Engineer to contribute to backend services that support global experiences and events. The role involves building secure, performant software while collaborating with senior engineers and product partners. Your responsibilities will include developing clear documentation, mai ...

Senior Embedded Linux Engineer — Rust & Networking, Hybrid

Technical Futures Ltd is seeking a Senior Embedded Software Engineer to design and develop embedded software for Digital RF products in Rickmansworth, England. Candidates should have strong programming skills in C, experience with Linux and embedded systems, and several years in software development. This positi ...

.Net C# Software Engineer with Commodity Trading Company 12 Month Initial Contract

Overview Exciting opportunity for a .Net C# Software Engineer with a background in trading environments to join this global Commodities Trading Company. This is a 12-month initial contract with potential for rolling extensions and possible transition to permanent. Key Requirements <ul ...

Software Engineer with C# Dot net Asp Dot Net SQL Server SSIS

Software Data Engineer with C# Dot Net, ASP.NET, SQL Server, SSIS, SSRS Our Client is a bank based in Central London looking to recruit a Data Engineer with at least 7 years of experience in C# Dot Net and SQL Server, specifically with SSIS. You must have solid expertise of at least 7 years’ e ...

Senior Data Engineer AI Led Software House Help Build New Data Practice

The Role A multi-award winning, AI-led software house specialising in large-scale projects for the UKs public sector, utilities, and transportation industries have announced their plans to build a brand new Data Practice . As a Senior Data ...

Lead Software Engineer – Python / Java AI Markets Technology, Credit Pre Trade Technology

We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible.As a Lead Software Engineer at JPMorganChase within Credit Technology, you are an integral part of an agile team that works to enhance, build, and deliver trusted market-leading techno ...

Software Engineering AWS DevOps Engineer eSC or eDV Cleared Professional Multiple Cities

At IBM Consulting UK FutureNow, you’ll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors. You’ll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and deliver solutions that ...

Software Engineer III Real Time Client Liquidity Dashboard Java and Kafka/ReactJs

Job Description Be an integral part of a team that’s constantly pushing the envelope to enhance, build, and deliver cutting‑edge technology products. As a Software Engineer III on the Global Liquidity and Cash Management Technology team, you will design, build, and enhance a real‑time client liqu ...

Lead Software Engineer Python / Java AI Markets Technology, Credit Pre Trade Technology

Job Description We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorganChase within Credit Technology, you are an integral part of an agile team that works to enhance, build, and deliver truste ...

Software Engineer III Real Time Client Liquidity Dashboard Java and Kafka/ReactJs

Job Description Be an integral part of a team that's constantly pushing the envelope to enhance, build, and deliver cutting‑edge technology products. As a Software Engineer III on the Global Liquidity and Cash Management Technology team, you will design, build, and enhance a real-time cli ...

Senior Software Engineer I, Infrastructure London, England, United Kingdom London, England, Uni[...]

Location: London, England, United Kingdom Join Axon and be a Force for Good. Your Impact What You’ll Do Work Location: This role is based out of our London office and follows a hybrid schedule. We rely on in-person collaboration and ask that team member ...

Software Engineer (Go)(Mid Level) Scale up Product Company Up to £90k!

I am recruiting for a fast‑growing tech scale‑up that’s transforming how hospitality and retail businesses manage flexible staffing. They are a proper product‑driven technology company building a platform that connects businesses with high‑quality staff. You’ll be joining one of three cr ...

Software Engineering Senior Linux Infrastructure Engineer eSC or eDV Clearance Required Profe[...]

At IBM Consulting UK FutureNow, you’ll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors. You’ll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and deliver solutions that ...

Research Software Engineer / Researcher in Quantum Computing and Verification – (Job ID: 186324)

Research Software Engineer / Researcher in Quantum Computing and Verification – (Job ID: ) University of OxfordOxford, United Kingdom The University of Oxford is recruiting for a research-focused position within its Department of Computer Science, contributing to advanced work in qu ...

Lead Software Engineer – Python / Java AI Markets Technology, Credit Pre Trade Technology

We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible.As a Lead Software Engineer at JPMorganChase within Credit Technology, you are an integral part of an agile team that works to enhance, build, and deliver trusted market-leading techno ...

Software Defined Network Engineer Cisco ACI and VMware NSX T (SC Clearance)

At CGI, our Space, Defence and Intelligence business unit delivers mission-critical systems that help keep the UK safe and secure. As a Software Defined Network Engineer, you will play a critical role in designing and delivering next-generation network solutions that enable secure, scalable, and hi ...

Senior Software Engineer II London, England, United Kingdom London, England, United Kingdom

Location: London, England, United Kingdom Join Axon and be a Force for Good. At Axon, we’re on a mission to Protect Life. We’re explorers, pursuing society’s most critical safety and justice issues with our ecosystem of devices and cloud software. Like our products, we work better ...

Senior Software Engineer I London, England, United Kingdom London, England, United Kingdom

Location: London, England, United Kingdom Join Axon and be a Force for Good. Your Impact What You’ll Do Lead engineering architecture design reviews, incorporating AI-driven insights and system modeling Set a high technical bar through code and architec ...

Maintenance Engineer Days in Worksop Interaction Recruitment

PPMs Must Be Correct and Up-to-Date at All Times PPMs must be correct and up-to-date at all times. Work Through Engineering Jobs List Provided by Engineering Manager Work through engineering jobs list provided by the Engineering Manager. React to Any Plant/Production Brea ...

Front End Engineer in London Blink The Employee App

Frontend Solutions Design and build efficient, reusable, and responsive UI components using modern web technologies. You will work with TypeScript, HTML, CSS, and React (or similar frameworks) to deliver high-quality frontend features. Collaborate with Cross-Functional Teams: Work closely with...o ...

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