1,831,797+ Full Stack Software Engineer Javascript React Elixir Jobs in UK — Top Companies Hiring June 2026

Professional job seekers finding United Kingdom jobs through Expertini
750,000+ professionals on Expertini 750,000+ Candidates
Join our global community
Expertini Penguin Mascot Resume Score™
Resume Score™ Instantly
Upload Your CV
Quick 30-second process

Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

Reset

Create Job Alert

 
   
Reset

C++ Libc++ Performance Engineer

The C++ Language team at Apple is seeking a software engineer to enhance the C++ standard library, focusing on performance optimization. This role involves collaborating with various engineering teams to shape the future of Apple's platforms and tools. A strong background in C++, debugging, and perform ...

Principal Rail Track Design Engineer

Poutrix is seeking a Principal Track / Permanent Way Design Engineer to join its team in Glasgow. This role offers the chance to work on interesting rail projects in a dynamic environment, fostering professional growth and development. The ideal candidate will possess expert knowledge in Microstation C ...

Senior PCB Layout Engineer — High Speed RF & Flex PCBs

Harris Geospatial Solutions is seeking a Senior PCB Layout Engineer to develop sophisticated PCB designs for products in Electronic Warfare and Data Encryption. The role involves collaborating with diverse teams to ensure that designs meet stringent specifications. Applicants must demonstrate expertise ...

AI Engineer — Ship Features Weekly in London (3d/wk)

Job Search Place Limited is seeking a Mid Level Software Engineer to join a fintech in Central London. In this role, you'll work collaboratively with a small team to deliver complete features weekly, leveraging AI technology. The ideal candidate is experienced in coding with AI, enjoys direct user inte ...

AI Engineer: Music Tech, ML Pipelines & Royalty AI

Universal Music Group is seeking an AI Engineer in Kings Cross, London to design and implement machine learning solutions. This role focuses on building AI tools for royalty management and artist operations. The ideal candidate will have 5+ years of experience in software engineering, expertise in Pyth ...

Low Latency C++ Engineer for Trading Systems (Hybrid)

Hunter Bond is looking for a C++ Software Engineer to join their elite prop trading firm in London, working in a hybrid capacity. This role involves designing high-performance trading applications and optimising systems crucial for trading efficiency. The ideal candidate will possess a strong backgroun ...

Fintech Principal C# Engineer Lead Architecture (London)

Peaple Talent is collaborating with a fast-growing UK fintech to find a Principal Software Engineer in London. This role involves shaping the company's technology platform, leading engineering initiatives, and mentoring engineers in a dynamic environment. The ideal candidate will have over 5 years of e ...

Android Engineer — Kotlin, Jetpack, & Scalable Apps

Just Eat Takeaway.com is looking for an Android Engineer to join their Grocery & Retail domain. You will work within a collaborative environment, designing scalable solutions that enhance customer experiences. The role requires strong development skills in Kotlin and understanding of Android architecture. </p ...

Senior Backend Engineer: .NET & Azure Cloud Migration Lead

Parser is seeking a Senior Software Engineer in Greater London to lead the migration of .NET services from AWS to Azure. The role involves designing event-driven systems, mentoring teams, and establishing CI/CD pipelines. The ideal candidate will have strong skills in .NET Core/6+, AWS, and Azure technologies, w ...

Test Systems Engineer — Flexible Hours, Hybrid Work, Bonus

Ultra Electronics Group in Greenford is seeking a skilled engineer responsible for debugging, testing, and troubleshooting during the application development process. You will develop test plans and coach junior team members while ensuring engineering projects meet quality standards and deadlines. Idea ...

Senior Lead Java Engineer for Equities Algo Trading

J.P. MORGAN is seeking a Lead Software Engineer for their Equities Trading Technology team in Greater London. You will design and develop algo trading strategies and enhance existing systems while collaborating with a global team. The ideal candidate has advanced Java skills, experience in real-time tr ...

Senior Temporary Works Engineer – Major Infrastructure Delivery

Contract Scotland is seeking a Senior Temporary Works Engineer to join their team in Aberdeen. This role involves delivering innovative temporary works designs for the high-profile ASTI - Pathway to 2030 project. The ideal candidate will have strong civil engineering knowledge and experience in tempora ...

Senior Security Engineer – Secure AI Platform (Remote)

Prolific is seeking a Senior Security Engineer to lead the charge in application security. This role requires a strong foundation in application and product security along with experience in software engineering. You will partner closely with engineers to identify vulnerabilities and ensure a stringent ...

Senior Kotlin Backend Engineer — XP, Cloud, Production

HCLTech is seeking a Senior Vendor Software Engineer proficient in Kotlin to join a high-caliber London front-office engineering team. This hands-on role emphasizes Extreme Programming practices to build a cloud-hosted platform for investment banking. The ideal candidate will have strong backend develo ...

Senior DevOps Engineer — Hybrid, AWS, CI/CD & Kubernetes

Netcompany UK Limited seeks an experienced DevOps Engineer to implement improvements in software quality and accelerate delivery times. You will work in a multi-disciplinary team focused on best practices in DevOps. With over 5 years of relevant experience, you should possess strong knowledge of AWS, C ...

Senior 2nd‑Line IT Engineer — Remote Support & Cloud Solutions

Energy Jobline ZR is looking for a customer-focused 2nd Line Technical Engineer in Glasgow. You will diagnose and resolve IT issues, build and configure hardware/software solutions, and support project delivery. The ideal candidate will have at least 2 years in a 2nd Line support role, a thorough under ...

Senior Building Envelope Design Engineer BIM Lead

Job Search Place Limited is looking for an experienced Senior Design Engineer to join their Engineering Services team in Frogmore, England. The ideal candidate will provide technical expertise, lead design tasks, and ensure high-quality deliverables for multi-disciplinary construction projects. The pos ...

3D CAD Mechanical Design Engineer — Early Finish Fridays

Ford- in Chapel-en-le-Frith is looking for a Mechanical Design Engineer to join their collaborative design office. You will translate customer requirements into detailed 3D CAD designs and manufacturing drawings for cranes and hoists, contributing to bespoke solutions manufactured on-site. This role of ...

RAG & Agentic AI Engineer — Real Time Voice & Conversation

Hunter Bond is seeking an AI Engineer based in London to develop next-generation intelligent systems using advanced RAG and agentic AI approaches. You'll work on impactful AI applications focusing on production-grade engineering and collaboration with cross-functional teams. This role involves designin ...

ML Systems Engineer Embedded & Real Time Performance

ARM is seeking an experienced engineer to work on Machine Learning technologies in Cambridge. The role involves developing and designing new features, mentoring junior engineers, and collaborating with hardware teams. Candidates should have strong programming skills in C, C++, and Python, as well as experience i ...

Observability Engineer — OpenTelemetry & AI Instrumentation

G-Research is looking for a Software Engineer to join their Observability Engineering Team in London. This role focuses on improving telemetry platforms, ensuring engineering teams can produce high-quality telemetry. You will work with C#, Python, OpenTelemetry, and Kubernetes while building shared engineerin ...

Lead Systems Integration Engineer — Hybrid (Bristol)

Babcock Mission Critical Services España SA. is seeking a Principal Systems Integration Engineer to join their hybrid working team in Bristol. The ideal candidate will lead the integration of complex hardware and software systems within a dynamic environment. You will have strong integration skills, ha ...

Manufacturing Planning Engineer: Lead Lean Projects

Westlakes Recruit is hiring a Project Planning Engineer for their team in Sheffield, South Yorkshire. The role involves overseeing the planning and scheduling of complex manufacturing projects to ensure efficient resource allocation and timely delivery. Ideal candidates will possess a Bachelor's degree ...

Mechanical Project Engineer – AD Plant Upgrades

Occupop is seeking a Mechanical Project Engineer in Ludlow, England, to manage the whole life-cycle of projects in anaerobic digestion. Key responsibilities include leading design teams, coordinating expansions, and overseeing budgets. Qualifications include a BTEC/HNC in Mechanical Engineering and exp ...

Senior Backend Engineer AI Healthcare SaaS, Cloud Scale

black.ai in London is seeking a Senior Software Engineer to develop backend features for innovative AI healthcare products. The role involves building high-performance systems and managing cloud infrastructures. The ideal candidate will have over 5 years in backend development, experience with MongoDB ...

Lead Mechanical Design Engineer – Building Services, Glasgow

Lusona Consultancy (Financial) Limited is seeking a Principal Mechanical Engineer based in Glasgow. This role involves leading mechanical design for complex projects while mentoring a growing team. Ideal candidates should have a strong background in building services and be proficient in relevant software lik ...

LLM Research Engineer Foundational & Data Centric AI

A global financial information provider is seeking a Machine Learning Research Engineer to build scalable AI systems and conduct LLM training. The role involves working collaboratively on innovative machine learning research projects and implementing cutting-edge techniques in a fast-paced environment. Candidate ...

Senior Site Reliability Engineer Cloud,CI/CD & Kubernetes

A leading tech start-up in Reading is seeking an experienced Site Reliability Engineer to join their dynamic team. You will troubleshoot application issues, assist in automating software deployment using CI/CD, and mentor junior team members. The ideal candidate has over 5 years of IT experience, proficient in P ...

Senior Design Engineer 3D BIM & CRE (Rail)

Spencer Group in Hull and East Yorkshire is seeking a Senior Design Engineer with over 6 years of experience in civil and structural engineering. The role involves providing design solutions, working with design software, and ensuring compliance with industry standards. The ideal candidate will have a ...

Urban Development Civil Engineer: Design & Delivery

Arcadis is looking for a career-minded Civil Engineer in Cardiff, United Kingdom. This role involves undertaking civil engineering design for projects that support sustainable urban development. The ideal candidate will collaborate with various disciplines, preparing design solutions and ensuring project integri ...

Senior PHP Engineer — Laravel, Hybrid, Impact Driven

A leading innovator in public sector solutions is seeking a Senior Software Engineer to develop high-quality applications using PHP and Laravel. This hybrid role offers a balance of collaboration and autonomy, allowing you to influence technical direction while mentoring junior engineers. You will work in a supp ...

Senior DevOps Engineer — Cloud, CI/CD & Go Automation

A leading delivery service provider in the UK is seeking a skilled engineer to improve software development processes through automation and internal tooling. The role involves designing scalable systems in AWS and writing production-quality code primarily in Go. Ideal candidates will have strong experience in C ...

Data Architect in London Accenture

Migration Approach Data integration approach Experience Being a hands-on data architect (only when needed) with program languages Java, Scala , and Python. Accenture is a global professional services company offering expertise in digital, cloud, and security solutions ...

Senior Marketing Platform Engineer – Data Driven Growth

A global technology company is seeking a Senior Software Engineer for their Marketing Platform team in London. The candidate will manage and evolve the marketing platform and comparison scraping for international customers. Ideal applicants have over five years' experience in Java or Kotlin, strong expertise in ...

Senior Android Engineer Digital Identity & Fintech

A leading financial services firm is seeking a Software Engineer III - Android to focus on creating customer-centric products. You will be responsible for developing and delivering product features, collaborating with cross-functional teams, and ensuring high-quality code. The ideal candidate will have advanced ...

Senior Flutter/Dart Engineer for Healthcare Mobile Apps

Spacelabs Healthcare in City of Edinburgh is looking for a Senior Flutter / Dart Software Engineer to lead the delivery of high-quality mobile applications. The role requires over 8 years of development experience, with advanced Flutter and Dart skills, and the ability to work within cross-functional teams. Cand ...

Senior Backend Engineer (Golang) – Scalable Microservices

Socure is looking for a skilled software engineer in London to architect, develop, and maintain scalable backend services. The ideal candidate will have 5–8 years of experience with strong proficiency in Golang and a solid understanding of system design. Responsibilities include designing tests to ensure reliabi ...

Data Architect Migration & Tech Lead (Java/Scala/Python)

Migration Approach Data integration approach Experience Being a hands-on data architect (only when needed) with program languages Java, Scala , and Python. Accenture is a global professional services company offering expertise in digital, cloud, and security solutions ...

Senior DevTools Engineer Hybrid Work, High Impact Tools

Tower Research Capital, located in Greater London, is seeking an experienced software engineer to enhance developer productivity and systems infrastructure. You'll design tools, automate workflows, and collaborate across teams. Ideal candidates should have strong programming skills in C++, Rust, and Python, alon ...

Senior Go Engineer — AWS, Kubernetes & Observability

Sky Ireland Limited is seeking a skilled software engineer based in Greater London to develop and support innovative customer-facing products. The successful candidate will demonstrate strong experience in building distributed applications on AWS, with proficiency in Go for backend and TypeScript for frontend de ...

Senior Storage & Compute Reliability Engineer

A leading financial data and analytics firm in London is seeking a Senior Software Engineer to ensure reliability in cloud storage and compute infrastructure. The role involves monitoring and optimizing services, collaborating with teams to develop solutions, and driving automation. Ideal candidates have strong ...

Senior Backend Engineer Energy Platforms (Remote)

Utility Warehouse in Greater London is seeking a Senior Software Engineer with a focus on backend solutions, primarily within Kubernetes. The role involves end-to-end deployment responsibilities, and you will foster collaboration and mentorship within the team. The ideal candidate will have strong expe ...

Structural Engineer: Grow to Chartered Status in UK Sites

A leading infrastructure engineering firm in Glasgow seeks a Structural Engineer to join their Scotland team. The ideal candidate will work on significant bridge projects, responsible for structural analysis and design in line with UK standards. Candidates should possess strong analytical and problem-solving ski ...

Product Engineer: Build & Own AI Features

LinuxRecruit in Greater London seeks an exceptional engineer to build impactful software that helps innovative organisations solve complex challenges. This role offers autonomy, quick decision-making, and the opportunity to influence product direction. You'll work closely with customers and founders, t ...

Staff Product Engineer – End to End HealthTech Platform

Accurx Limited in London is looking for a Product Engineer to take ownership of features from concept to implementation. You will engage with NHS GPs and practice staff to solve real problems while ensuring product reliability and safety. This role necessitates strong expertise in software development ...

Embedded Systems Integration Engineer (Defence/Aerospace)

Expleo Group is looking for an Embedded Electronics Systems Integration Engineer in Stevenage, UK. The role involves finalising system architecture, conducting integration tests, and managing de-risking programmes in defence technology. Candidates should have a degree in Electrical/Electronic Engineering or HNC/ ...

Lead Mechanical Design Engineer – Electric Propulsion

A technology company in the UK is seeking a Senior Mechanical Design Engineer to lead their mechanical engineering team. Responsibilities include designing and developing motor and controller products, reviewing CAD models, and supporting manufacturing processes. The ideal candidate should have a degree in mecha ...

MES Engineer: Design, Implement & Support Global Projects

A leading industrial automation firm in Birmingham seeks a talented MES Engineer to perform initial analysis, solution design, and provide on-site support for MES implementations. The ideal candidate should hold a degree in Engineering or Computer Science and have 2+ years of experience in the Industrial Automat ...

Senior Highways Engineer | Lead UK Infrastructure Design

A leading engineering recruitment firm seeks a highly skilled Senior Highways Engineer to join their team in Greater London. This role involves leading the design and delivery of highways projects, ensuring compliance with regulations. The ideal candidate will have a Bachelor's degree in Civil Engineering, exten ...

Lead Structural Engineer – Sustainable Design

A leading engineering consultancy in Greater London seeks a highly experienced Structural Engineer to join their team. This role involves driving business development and leading structural projects across the UK. The ideal candidate will have a chartered status in civil/structural engineering and significant de ...

🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

To-Do Planner

Organize your job search and personal tasks. All data is confidential.

Open Planner

Wellbeing Center

Access your confidential wellness report and resources to manage job search stress.

Check Wellbeing

Skill Coach

Plan your skill development with O*NET support to stay competitive in your field.

Start Coaching

Outfit Helper

Get AI-powered suggestions on what to wear for your next interview.

Find Outfit

Income Tax Calculator

Plan your finances with our calculator, updated for 2025 tax regulations.

Calculate Tax

Salary Benchmark

Get accurate, AI-supported salary trends to know your worth and negotiate better.

Check Salaries

Interview Practice

Practice for any interview with AI-enabled Q&A sessions. All data is private.

Start Practicing

Interview Predictor

Use our AI-supported tool to predict potential interview questions based on your resume.

Predict Questions

Interview Practice Timer

Use our mock interview trainer to perfect your answers under timed conditions.

Start Timer

Behavioral Mastery

Ace tricky behavioral interviews with our AI-powered practice module.

Master Answers

Question Journal

Confidentially record interview questions you were asked for future reference.

Open Journal

Interview Ace

A comprehensive tool to help you master every aspect of your interviews.

Become an Ace

Q&A Logs

Confidentially track your answers to common questions and refine them over time.

View Logs

Application Planner

Schedule and organize your job applications in one confidential planner.

Open Planner

Cover Letter Tool

Create perfect, tailored cover letters for each application with AI support.

Generate Letter

Resume Score

Get instant feedback on your resume with our NLP-supported analysis tool.

Check My Score

ATS Score

Check your resume's compatibility with Applicant Tracking Systems (ATS).

Check ATS Score

Application Analyzer

Use AI to analyze job descriptions and optimize your application materials.

Analyze Application

Career Visualizer

Confidentially plan and visualize your long-term career path and goals.

Visualize My Career

Offer Genius

Get intelligent insights and strategies to confidently negotiate job offers.

Negotiate Offers

JobFlow

Track your entire job search progress from application to offer with this intelligent tool.

Track My Flow

JobSense

Our intelligent matching engine that provides smart job recommendations.

Get Smart Matches

Networking Toolkit

Tools to build and manage your professional connections. All data is confidential.

Build Network

Professional CV

A classic, O*NET supported template for corporate and professional roles.

Use This Template

Executive CV

A premium, O*NET supported template designed for senior and C-level positions.

Use This Template

Modern CV

A fresh, stylish, O*NET supported template perfect for tech and modern industries.

Use This Template

Creative CV

A visually distinct, O*NET supported template for design and artistic roles.

Use This Template

Minimalist CV

A clean, simple, O*NET supported template that focuses purely on content.

Use This Template

Europass CV

The standard European Union recommended format for wide compatibility.

Use This Template

Student CV

An institution-recommended template perfect for internships and first jobs.

Use This Template

Graduate CV

An institution-recommended template for recent graduates entering the workforce.

Use This Template

Academic CV

The researcher-recommended format for roles in academia and research.

Use This Template

Developer/IT CV

A tech-savvy recommended template to highlight your technical skills.

Use This Template

Skilled Worker CV

A trades-recommended template to showcase hands-on skills and experience.

Use This Template

Monochrome CV

A sleek, black-and-white, O*NET supported template for a professional look.

Use This Template

Art CV

An artist-recommended template that allows your creativity to shine.

Use This Template

Harvard CV

A researcher-recommended template based on the classic Harvard format.

Use This Template

Volunteer Research

Help us improve our platform by joining our community research program.

Join Research

Review Us

Share your experience with our tools to help other job seekers.

Share Experience

Register

Create your free account to save jobs, build your profile, and track applications.

Create Account

Login

Access your dashboard, manage applications, and continue your job search.

Access Your Account

Profile Builder

Create a comprehensive professional profile that attracts recruiters and showcases your skills.

Build Your Profile

View Profile

See your public profile exactly as employers will see it. Make sure it's perfect.

Preview Profile

Bookmarked Jobs

Keep track of all your saved job opportunities in one organized place.

View Saved Jobs

Your Reviews

View and manage all the company reviews you've submitted.

See Your Reviews

Following

Manage the list of companies you follow to stay updated on their new openings.

Manage Following

Find Companies

Discover and research top employers in your country and industry.

Discover Employers

Standalone CV Builder

Use our O*NET supported CV builder to create a professional resume from scratch.

Build Your CV

PDF to DOC (Beta)

Convert your PDF resumes or documents into editable Word (DOC) format.

Convert PDF

DOC to PDF (Beta)

Create universally compatible PDF documents from your Word (DOC) files.

Create PDF

General FAQ

Find answers to common questions about our job site and platform.

Read FAQ

Job Seekers FAQ

Get help and find answers to questions specifically for job seekers.

Get Help

Job Matching

Learn about the technology and algorithms behind how we match you to jobs.

Learn How

Personalized Matching

Discover how we use your profile and activity to provide customized job suggestions.

Learn More

Quick Apply

Understand our fast application process and how to make the most of it.

Learn More

Alert Frequency

Learn how to manage your job alert settings so you get the updates you want.

Manage Settings

Job Alerts Guide

A complete guide to understanding how job alerts work and how to use them effectively.

Read Guide

Resume Matching

Learn how our system matches your resume to job requirements.

Learn More

Ethical Branding

Read our guide to building a professional and ethical personal brand.

Read Guide

Candidate Visibility

Learn how to increase your visibility to recruiters on our platform.

Increase Visibility

Verified Badge

Find out how you can get a verified badge to build trust with employers.

Get Verified

AI ATS Technology

Learn about the advanced AI and ATS technology that powers our platform.

Learn More

ATS Ranking

Understand how Applicant Tracking Systems rank you as an applicant.

Learn More

Semantic Matching

Learn how our AI-powered semantic matching goes beyond keywords.

Learn More

    Buffering Video...

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