2,045,078+ Full Stack Software Engineer Javascript React Elixir Jobs in UK — Top Companies Hiring June 2026

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C++ Embedded Systems Engineer — Aerospace

METIS Aerospace Ltd is seeking a Software Engineer C++ to develop applications integrating with their hardware in Lincoln. The role involves designing and implementing features, testing software on live systems, and collaborating closely with engineering teams. Candidates should have a strong understanding of C+ ...

Platform Tech Lead – Fintech, Scale & AI

8120 Barclaycard UK is seeking a Principal Software Engineer to drive technical excellence through innovative software design and mentoring of engineering teams. This role involves leading cross-functional collaborations and contributing to strategic planning, ensuring alignment with business objectives and d ...

Senior Staff Backend Architect – Global, Equity Options

Metropolis is seeking a Senior Staff Software Engineer to join our AeroParker team in Stockport. This role encompasses driving the technical strategy for our pre-book mobility platform and managing complex distributed systems while ensuring their scalability and reliability. The ideal candidate has ext ...

Senior Backend Engineer Portfolio Data Workflows

Addepar, located in Edinburgh, is seeking a Staff Backend Software Engineer to enhance their Portfolio Data Workflows team. You will play a critical role in designing and implementing API services that support a growing European market. This position offers substantial technical leadership opportunities in a ...

Wireless Protocol & System API Engineer (3GPP/Pre 6G)

A leading technology company is seeking a Wireless Protocol Software Engineer to develop software capabilities and APIs for system configuration. This role requires strong 3GPP protocol expertise and involves validating protocol configurations for UE and base station emulation. You will collaborate with cross-fu ...

Senior Real Time Embedded Engineer — Automotive Test Systems

A leading automotive engineering firm in Bradford-on-Avon is seeking a Senior Real-time Embedded Software Engineer. This role involves designing and deploying software for advanced automotive test equipment, ensuring high quality and compliance with industry standards. Applicants should have a strong engineering ...

Aerospace Cloud Integration Engineer

GE Aerospace is seeking a Software Integration Engineer in Chandler's Ford, UK. The role involves integrating software with customer systems for cloud-based air traffic management services. You will work with a cross-functional team to ensure reliable and secure solutions. The ideal candidate will have ...

Senior Backend Engineer (Java & Spring) | Microservices

Elsevier in Oxford is seeking a Software Engineer III to design and develop backend services using Java, Spring Boot, and Python in a collaborative agile environment. This role involves enhancing document transformation services and APIs while working with cloud technologies like AWS and Kafka. The ideal candida ...

Principal AI Innovation Architect

Pearson is seeking a Principal Software Engineer for their innovative AI team in Greater London. In this founding role, you will lead the design and delivery of advanced AI solutions, collaborating with product leaders and partners to solve customer issues and foster strategic innovation initiatives. T ...

Embedded Linux Kernel Engineer: PCIe/ARM | Share Options

Logik Source is seeking an experienced Embedded Linux Kernel Engineer based in Central London, who will develop software to host and monitor high-speed networks. The successful candidate will focus on AI/ML technologies for datacentres and work in a hybrid environment. The role encompasses defining sof ...

Monitoring Platform Engineer Observability & Automation

SRT Marine Systems PLC in Birmingham seeks a Software Engineer (Monitoring Platform) responsible for designing and maintaining a productized monitoring platform deployed across global clients. Key duties include building CI/CD pipelines, managing Docker-based service orchestration, and developing dashboards u ...

Safety Critical DO 178C SDET Engineer (Hybrid)

DCS Recruitment seeks a Software Engineer / Test Specialist in Oxford for a hybrid position with 2 days onsite per week. This role focuses on safety critical systems, ensuring compliance with DO-178C standards while engaging in advanced AI-driven software verification. Key responsibilities include lead ...

Automated Test Systems Engineer (Python)

A technology company in Lisburn is seeking a Test System Software Engineer. In this role, you will develop and maintain production test systems, ensuring quality through automation. You will collaborate with production teams to resolve issues and continuously improve processes. The ideal candidate will have 3+ y ...

AI Tooling Engineer for Developer Platforms

A leading tech-driven financial firm in Greater London is seeking a software engineer to architect LLM-powered tools and collaborate with engineering teams. The ideal candidate has over 2 years of experience in software engineering, fluency in Python, and strong analytical skills. This position offers a dynamic ...

Senior QA Engineer for AI Powered Platform (Remote UK)

Dayshape, based in Edinburgh, is seeking a Senior Software Quality Engineer. This role involves ensuring quality in software releases, adapting quickly to new teams, and utilizing AI tools to improve testing processes. The ideal candidate should have experience in exploratory testing, risk management, ...

Senior Data Platform Engineer ML Pipelines & Databricks

twentysix, located in Washington, England, is looking for a skilled software engineer to be responsible for owning and maintaining their production machine learning and delivery platform. The role involves designing large-scale Databricks/Spark pipelines and leading technical improvements. Applicants s ...

Senior Real Time Embedded Engineer Growth & Hybrid

A leading aerospace and defense company is seeking a passionate Real-Time Embedded Software Engineer to design and deliver high-integrity embedded software solutions. With around 4 years of experience, you will collaborate with multi-disciplinary teams and enhance your skills in a supportive environment. The rol ...

AI Hardware Verification Engineer Early Career

A pioneering AI company based in the UK is looking for a Silicon Verification Engineer to join their innovative team. This role involves collaborating across multiple disciplines to ensure the highest standards of functional quality in RTL releases. Candidates should have strong software skills, preferably in Py ...

Senior Cloud Data Engineer AWS, Python & Databricks

SoCode Limited, a leading financial data and analytics company, is seeking a Senior Software Engineer to join their team in London. This role focuses on building and maintaining systems for efficient data distribution to clients globally. The ideal candidate will have over 6 years of software engineeri ...

Senior DevOps Engineer (eDV)

Senior DevOps Engineer (eDV) - Cheltenham/Gloucester or Manchester (Hybrid) You'll be joining an experienced software dev function, working in a cross-functional team, delivering and deploying applications and software to cloud or on-prem environments across National Security projects. < ...

Senior UI Infrastructure Engineer — Embedded C++

A leading streaming technology company is seeking a Senior Software Engineer, UI Infrastructure to enhance the embedded UI framework. This role involves developing tools for the development community, improving system stability, and impacting millions of users. The ideal candidate will have over 5 years of exper ...

Senior Node.js Engineer — Build Scalable Backend & APIs

A leading sports and gaming marketing company in Greater London is seeking a Senior Software Engineer to take charge of backend services and API integration. The role involves leading technical decisions, shaping product features, and ensuring scalability. Candidates should have hands-on experience with large-sc ...

Real Time C# Defense Simulation Engineer

Electus Recruitment Solutions is looking for a skilled software engineer to develop real-time, performance-critical simulation software for complex defence systems. The role involves interfacing with hardware-in-the-loop testing and supporting the verification and validation of physical systems. The id ...

Senior Backend Engineer — Java, Cloud & DevOps

Parser Limited is looking for a Senior Java Engineer to join their dynamic team in London. This role involves developing software solutions and embracing DevOps practices while working 2-3 days a week in the office. The company promises a highly competitive compensation package and extensive growth opportunit ...

Embedded Test Engineer – Medical Devices & Automation

HS Design, Inc. is seeking an Embedded Software Engineer in Test to work on a greenfield medical device project in Bristol. You will develop structured testing strategies for embedded software and automate test processes while collaborating with multidisciplinary teams. The ideal candidate should have ...

Product AI Engineer — Build Enterprise AI Platforms

NewsNowGh is seeking a Product AI Engineer in London, UK, to design and develop AI-powered enterprise applications. This role involves collaborating directly with founders and teams to design scalable systems and integrate cutting-edge AI solutions. The ideal candidate will have proficiency in software ...

Embedded Electronics Engineer R&D Growth Role (Newcastle)

KO2 Embedded Recruitment Solutions Ltd is seeking an Electronics / Embedded Design Engineer to support a new R&D and design function in Newcastle upon Tyne. This role combines hardware and software development, focusing on PCB design, schematic capture, and embedded software for microcontrollers. Ideal candidate ...

Senior Security Engineer: Secure, Scalable Apps

A leading global financial services firm is seeking a Software Engineer III to join their agile team in Bournemouth, England. The successful candidate will design and deliver trusted market-leading technology products. Responsibilities include developing secure production code, analyzing large data sets, and con ...

Lead Backend Engineer, Data Infrastructure (Golang)

A global digital asset platform is seeking a Lead Software Engineer for its CoinDesk Data Engineering team in the UK. The role involves owning projects, driving operational standards, and ensuring quality in software delivery. Candidates should have over 6 years of backend development experience, proficiency in ...

Senior Real Time Streaming Platform Engineer

CrowdStrike Holdings, Inc. is seeking a Senior Software Engineer specializing in real-time streaming systems. The role involves designing and developing scalable streaming services using Java, Go, and technologies like Apache Kafka and Flink, supporting the company’s mission in cybersecurity. You will ...

Lead Backend Engineer | C# .NET, Azure SaaS | Hybrid/Remote

Client Server is seeking a Lead Backend Software Engineer in Reigate. This role involves hands-on leadership in developing a complex SaaS platform, focusing on C# and Azure technologies. You'll work with a small team, engaging in all phases of the software development lifecycle. The position offers a h ...

Autonomous AI Innovation Engineer | GenAI & ML Orchestration

Google is seeking an experienced software engineer in London to design and build autonomous workflows using machine learning and generative AI technologies. The ideal candidate will have a strong background in software and data engineering, with the ability to translate business problems into structured produ ...

Cloud Networking SysDE Build, Automate & Scale

Amazon is seeking a System Development Engineer in Greater London to innovate and implement software solutions that support network operations. The role involves designing new components, investigating technical issues, and ensuring operational efficiency for AWS’s vast network. The ideal candidate has ...

Embedded Test Engineer – Medical Devices & Automation

Ensera Design is seeking an embedded Software Engineer in Test to join their team in Bristol. You'll be involved in developing testing strategies for medical devices and improving testing for complex systems. The ideal candidate has 3-5 years of experience in software testing for embedded systems, spec ...

Data Flywheel Engineer for AI Eval Pipelines

A leading tech firm in Greater London is seeking a Software Engineer to build systems and pipelines that enhance data quality. The role requires over 3 years of experience in software engineering, particularly with Python and SQL. You will have the opportunity to shape how the company measures and improves answe ...

Staff Engineer Forward Deployed AI Autonomy

AI Chopping Block, Inc. is seeking a Software Applications Engineer in Greater London. This position focuses on providing technical support for AI and Autonomy development using the Hivemind software products. Candidates should have a strong programming background, with a Bachelor's degree and substantial ind ...

Embedded Linux Systems Engineer (IoT/Ubuntu Core)

Canonical is seeking a Linux Devices Software Engineer to contribute to cutting-edge embedded systems technology. The role involves software development for Ubuntu Core and engaging with the wider open-source community while working with leading silicon partners. Candidates should have a strong academic backgrou ...

Senior Linux Performance Engineer Platform Systems

Akamai Technologies GmbH is looking for a Principal Software Engineer to join their Compute division's Platform Engineering Team in Greater London. In this role, you will analyze system performance, design scalable software solutions, and train team members. The ideal candidate will have over 10 years ...

Lead Backend Engineer – Trading Platforms & Systems

Marks and Spencer is seeking a Software Engineer to join their team in London. You will lead software development, provide technical leadership, and mentor fellow engineers. The position demands a strong engineering background with proven experience in back-end systems, cloud technologies, and agile practices. A ...

Staff ML Benchmarking & QA Engineer

Graphcore is seeking an experienced ML engineer in Bristol to focus on testing, validating, and benchmarking complex ML software stacks. The candidate should possess strong experience with machine learning systems, a solid foundation in AI, and proficiency in Python. This role involves collaboration with soft ...

Lead Principal Engineer, Risk Platform — London

The Bank of America is seeking a Principal Engineer in London to design and maintain large-scale risk applications. This crucial role involves leading development efforts, collaborating across teams, and mentoring junior developers to deliver high-quality software solutions. The ideal candidate will po ...

Java SDE II: Design, Deliver & Elevate Systems

Limelight Health is seeking a Software Development Engineer II - Java based in Greater London. This mid-level role focuses on implementing and delivering software solutions using Java and cloud technologies. The ideal candidate will mentor other engineers and ensure high-quality standards in development. ...

Senior Lead SWE, Commodities Tech (Base Metals)

JPMorgan Chase is seeking a Senior Lead Software Engineer within the Base Metals team in London. You will enhance and deliver technology products while driving significant business impact. The ideal candidate has over 5 years in software engineering and strong management skills. You will ensure the dev ...

Python Engineer — Lab Data Integrations (Hybrid, London)

We Source Talent seeks a Software Engineer (Python) to work in a hybrid model, 3 days a week in London. The candidate will integrate data from scientific lab instruments and transform scientific data files using Python. The ideal applicant has a Bachelor's in Computer Science and 0-2 years of experienc ...

Hybrid QA Engineer — Monthly Office, Shape Quality

Rebel Recruitment Limited is seeking a Quality Assurance Engineer in Birmingham, to ensure software quality and user satisfaction. The role includes both manual and automated testing, requiring strong software testing experience and collaboration with developers. Ideal candidates will have excellent co ...

Senior Platform Engineer: AI Driven SDLC & Cloud Ops

A diversified trading firm is seeking a skilled Software Engineer to design and maintain build/release/run tooling for development teams. Candidates should have six or more years of experience in software engineering and proficiency in GitHub Actions and at least one programming language such as Python, Go, Java ...

Platform Engineer – Payments & Internal Tools Leader

MARKS&SPENCER is seeking a passionate Staff Software Engineer to join its Software Engineering team in Greater London. In this role, you will be responsible for building high-quality platforms that serve both internal engineers and customers, driving automation in the cloud, and mentoring less experienced dev ...

Senior Data Platform Engineer — Spark & Airflow

Roku is seeking a highly skilled Senior Software Engineer in Cambridge, England. This hybrid role involves designing and maintaining scalable systems for big data processing using technologies like Apache Spark and Airflow. The successful candidate will collaborate with cross-functional teams to build robust dat ...

Lead AI Engineer for Production Pipelines & RCA (Equity)

A tech startup focused on AI systems in London is seeking a Lead AI Software Engineer to own and build the core systems that transform production alerts into actionable insights. The role includes architecting critical pipelines in Python and collaborating closely with founders. Candidates should have over 5 yea ...

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