2,330,368+ Full Stack Software Engineer Javascript React Elixir Jobs in UK — Top Companies Hiring July 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

Senior Rust Backend Engineer for Decentralized Identity

Affinidi Group is looking for a Senior Software Engineer (Backend) in Greater London to develop secure, scalable backend systems for the Affinidi Elements platform. This role requires expertise in Rust and a deep understanding of cloud computing and performance optimization. Successful candidates will ...

Senior Mechanical Design Engineer – Automotive Robotics

AB Dynamics in Bradford on Avon is seeking a Senior Mechanical Design Engineer to develop complex, high-value products. You will work within multidisciplinary teams, focusing on robotic systems and automotive development. The ideal candidate will have a degree in Mechanical Engineering and significant ...

AI Product Engineer: Build Production AI Agents for Finance

Impala Search is looking for an AI Product Engineer to build production AI agents and intelligent workflows. You will automate risk investigations and compliance processes for global financial institutions, collaborating with customers and taking ownership of product development. The ideal candidate sh ...

Nuclear Fire Safety Engineer | MAGIC Simulations & Design

1st Select is seeking a Fire Safety Engineer in the East Midlands. This role focuses on ensuring fire safety in engineering design within the nuclear sector by collaborating across disciplines and running essential fire safety simulations. Ideal candidates will have a degree in engineering and hands-on experi ...

QA Engineer: Manual Testing & Quality Assurance (12‑month)

MPS Limited seeks a QA Engineer in Greater London for a 12-month fixed-term contract. The successful candidate will ensure software quality through testing, process improvement, and close collaboration with product managers. Candidates should have a degree in Computer Science and a minimum of 3 years' ...

Dimensional Calibration Engineer | Flexible Hours & Growth

The American Society of Civil Engineers in England is seeking a skilled Calibration Engineer to join their leading calibration services team. This role involves calibrating measuring instrumentation in accordance with ISO9001 and UKAS standards, ensuring traceability and compliance. The ideal candidate ...

Principal Control Systems Leader | Hybrid & Client Facing

NMS Recruit Ltd t/a Russell Taylor Group is seeking a Principal Control Systems Engineer in Sheffield. This role involves leading complex control systems projects and ensuring delivery from concept through to execution. The right candidate will have a minimum of 7 years of experience in systems enginee ...

Senior AI Solutions Engineer Real World, Secure Deployments

Few&Far in Belfast is seeking a Principal AI Solutions Engineer to lead a high-performing team in building and deploying advanced AI solutions. This role involves engineering tasks from prototype to production while providing direct customer solutions. The ideal candidate will have a robust software en ...

Principal Engineer — AI SaaS Architecture & Leadership

Fin, located in Greater London, is seeking a Principal Engineer to lead key strategic initiatives within engineering. You will collaborate with cross-disciplinary teams, contribute to software development, and coach other engineers. Ideal candidates have 2+ years as a technical leader, a strong backgro ...

Senior Civil Engineer Lead Highways & Infrastructure (Hybrid)

BWB Consulting Ltd in Birmingham is looking for a Civil Engineer to lead multi-disciplinary projects, including highways and drainage design. You will utilize industry-leading software like Civil 3D and AutoCAD to deliver innovative solutions while mentoring junior engineers. The ideal candidate will h ...

Applied AI Engineer Production LLM/RAG in Regulated Apps

Anson McCade is seeking an Applied AI Engineer in Newcastle upon Tyne to design, build, and deploy AI-enabled systems. The role focuses on integrating AI components, particularly LLMs, into production applications and implementing mitigation strategies for AI behavior. Ideal candidates will have experi ...

Senior Data Engineer CDP & Customer 360 Architect

RELX in Sutton is seeking a skilled engineer to design and deliver scalable customer data platform solutions. You will closely work with technical and business stakeholders to ensure architecture aligns with business objectives. The ideal candidate will have experience in software engineering, data arc ...

Platform Engineer: Cloud, Kubernetes & Automation

Immersum is seeking a Mid-level Platform Engineer to build and automate secure, highly available cloud infrastructure in London. This role involves driving automation, partnering with software teams, and enhancing platform observability. The ideal candidate will have extensive AWS experience, strong Ku ...

Hybrid AI Platform Engineer: Build Scalable AI Infra

Elliptic Enterprises Ltd. is looking for an engineer to join their AI Platform team in Greater London. You will help build foundational infrastructure for AI development, focusing on model serving, evaluation, and observability within the company. The ideal candidate is deeply curious about AI, possess ...

Senior Backend Engineer Java/Spring, SC Clearance

Coltech is seeking an experienced Software Developer / Engineer to join a secure, large-scale financial services programme in Greater London. This role involves hands-on engineering within a collaborative team, enhancing critical backend services in a distributed architecture. The ideal candidate will ...

Stress Analysis & FEA Engineer – Hydrogen & CO₂ Pipelines

Premtech Ltd, located in Ruddington, is seeking a Stress Analysis Engineer to join the team at Premzero. The role focuses on performing pipework stress analysis and other analyses such as FEA and fatigue studies. Candidates should have relevant experience in the UK gas transmission industry, particularly with CA ...

Senior Civil Engineer – Hybrid: Sustainable Land Development

A leading engineering consultancy in Cambridge is seeking a Civil Engineer focused on sustainable land development projects. The role involves designing drainage strategies, preparing technical reports, and engaging with clients and local authorities. Ideal candidates will hold an MEng or BEng in Civil Engineeri ...

Hybrid Senior C++ Engineer – High Performance, Low Latency

Darktrace Ltd in Cambridge is looking for a Senior C++ Software Engineer to join their R&D team. In this hybrid role, you'll design and develop high-performance systems using modern C++. You will contribute to innovative solutions that enhance Darktrace’s cybersecurity services. The position requires s ...

Secure DevOps Engineer AWS, CI/CD & Test Automation

A leading technology firm is seeking a skilled DevOps Engineer in Newcastle upon Tyne to deliver secure, scalable platforms supporting critical national infrastructure. The role demands hands-on skills in automated testing and CI/CD pipelines, requiring expertise in AWS and various automation tools. Applicants m ...

Rust Backend Engineer Fintech Platform, PostgreSQL

A leading fintech SaaS company is seeking a Software Engineer specializing in Rust to join their team in London. In this role, you will design and build high-performance backend services, leveraging your skills in Rust and PostgreSQL to contribute to critical financial infrastructure. The ideal candidate will ha ...

Remote Applied AI Engineer Build Real World AI Systems

A leading technology consultancy seeks an Applied AI Engineer to design and deliver AI-powered systems. This remote position allows for collaboration with experienced engineers and data scientists on meaningful AI projects. Ideal candidates will have 2 years of experience in software engineering or AI-related ro ...

Enterprise AI Deployment Engineer — Customer Facing

Industrial and Financial Systems is seeking a Forward Deployed AI Engineer in Greater London. You will work with clients to deliver custom AI solutions, driving everything from prototyping to launch. With 2-5 years in software or ML deployment and proficiency in Python and AI frameworks, you will integrate syste ...

Cloud & Data Platform Test Engineer (Lakehouse) Hybrid

N Consulting Limited is seeking a Test Engineer for its Cloud & Data Platform team based in London. This contract position offers a hybrid work model, requiring 2 days at the office. The ideal candidate should have 3–5+ years of experience in software testing and 2+ years testing cloud infrastructures using AWS ...

Senior Engineer, Systematic Data — Real Time Cloud Platform

Balyasny Asset Management L.P. is looking for a skilled Senior Engineer for their Systematic Data team in Greater London. The role focuses on designing and maintaining cloud-native data systems critical for systematic trading operations. Candidates should have a degree in Computer Science and over 5 years of exp ...

Civil Infrastructure Design Engineer — Masterplanning

A leading engineering consultancy in Leeds is seeking a Civil Design Engineer to work within a dynamic team. The role requires a civil engineering degree, experience in highway and drainage design, and a commitment to mentoring junior team members. You will manage multiple projects, produce technical drawings, a ...

Boundary Element Solver Intern – Porous Media (Summer 2026)

SLB is seeking a Computational Software Engineer Intern for a 3-month program in Abingdon, starting Summer 2026. The intern will work on developing a boundary element method solver for fluid flow in porous media, gaining hands-on experience in scientific computing, numerical analysis, and applied mathematics. ...

Staff QA Engineer: Automation & Quality Strategy Lead

A leading investment platform in Greater London is seeking a Staff QA Engineer to define and drive the quality strategy for their software products. The role encompasses mentoring Test Automation engineers, defining quality standards across web and mobile platforms, and implementing modern testing tools. The ide ...

High Performance Trading Systems DevOps Engineer

Jump Trading in Greater London is seeking a dynamic software engineer to enhance their quantitative trading teams. The role involves managing production servers, writing python infrastructure, and solving challenging technical problems in a fast-paced environment. Ideal candidates will have a strong fo ...

Senior Kotlin Mobile Engineer | Compose Multiplatform

A leading digital sports platform is seeking a Mobile Software Engineer III based in the UK. The successful candidate will develop modern mobile experiences using Kotlin and Compose Multiplatform while collaborating with cross-functional teams. This role requires 4+ years of mobile development experience and a s ...

Java Backend Engineer Spring Boot | Cloud & Microservices

NextWave Consulting Ltd is seeking a Software Engineer in London, UK to build and enhance backend services for a modern Data Fabric platform. The role requires 2-5 years of experience with Java and Spring Boot, and will involve working collaboratively in an agile team. You will be responsible for the design, dev ...

Defence Applications Engineer

Leidos in Huntingdon is looking for an Application Engineer to manage and maintain application baselines across multiple domains. This role involves providing technical support, integrating new technologies, and delivering software updates. Successful candidates will engage with clients and collaborate with v ...

Principal EPR Data Integration Engineer

Northern Lincolnshire and Goole NHS Foundation Trust seeks a Principal Software Engineer – Integration to lead the implementation of our new Electronic Patient Record (EPR) and enhance our Data Warehouse. This role involves overseeing the design and development of data systems vital for clinical operations. < ...

Senior FDE Python & AWS SaaS (Client Facing)

A growing technology scale-up based in Manchester is looking for a Forward Deployed Engineer with strong Python and AWS skills. This role involves client-facing responsibilities, where you'll manage bespoke projects and develop cloud-based applications. The position offers a competitive salary of up to £80k, hyb ...

Senior Product Security Engineer – Hybrid (2 days WFH)

A top financial firm in London is seeking a Senior Product Security Engineer with strong experience in securing software development. This role will focus on collaborating with IT and engineering teams to lead security processes and ensure protection across cloud and business applications. Candidates should have ...

Java/AWS Microservices Engineer Hybrid

A prominent UK technology organization is looking for a Mid-Level Software Engineer to join their team in London. The role focuses on developing and maintaining Java-based microservices in an AWS environment, and involves hands-on coding, collaboration, and problem-solving. The ideal candidate will have strong c ...

Rust Systems Engineer for Custom Distributed Storage

Barlowe LLP, located in Greater London, is seeking a skilled engineer to join their Basecamp Technology group to build a greenfield storage platform. This role involves designing systems that enable seamless data movement and collaborating with researchers. Ideal candidates will have strong software engineeri ...

Staff Motion Planning Engineer Autonomous Ground Systems

A leading autonomous systems company in Greater London is seeking an experienced Staff Software Engineer. The candidate will design and implement advanced planning systems for autonomous vehicles, requiring strong C++ programming skills and a degree in a relevant field. Responsibilities include driving technical ...

Core Java Engineer – Low Latency, Hybrid in London

Understanding Recruitment is seeking a Core Java Software Engineer to join a leading investment management firm's spinout in Central London. The role offers hybrid working, with three days from home and a salary of up to £120,000 plus bonus. Candidates should have substantial experience in Core Java, including s ...

Java Engineer – Core Trading (Low Latency)

A leading FinTech company seeks a Software Engineer for their Core Trading team. In this role, you will design and develop low-latency systems that enable a world-class trading experience. Ideal candidates have 4+ years of Java development experience, problem-solving abilities, and knowledge of financial systems ...

Senior Frontend Systems Engineer — UI Frameworks & TypeScript

A leading technology recruitment firm seeks a Senior Frontend Systems Engineer to build and optimise innovative UI frameworks. This hybrid role in London involves solving complex data problems and contributing to software used in critical applications globally. Candidates should have experience with systems-leve ...

Junior Cloud Platform Engineer AI & Automation Focus

Lean Tree in Greater London is seeking a Junior Platform Engineer to support the design and operation of cloud platforms. The ideal candidate will have 1–3 years of experience and a background in technology disciplines like Computer Science or Software Engineering. This role involves working alongside ...

Senior .NET AI Engineer Scalable Data Pipelines

NCube Ltd is seeking a Senior Software Engineer to join their fast-scaling AI-driven data platform in Greater London. This role emphasizes .NET/C# development and requires significant leadership in architecture and technical direction for data processing capabilities. The ideal candidate will have over ...

Senior Test Automation Engineer – AI Driven QA (Hybrid)

Ashdown Group is seeking a Senior Test Automation Engineer in Kingston upon Thames. In this hybrid role, you’ll ensure the quality and performance of high-volume transaction platforms while collaborating with cross-functional teams to design and implement testing strategies. The ideal candidate will ha ...

Senior DC Fast Charging Hardware Engineer

A leading energy storage company in the UK is looking for a Hardware Engineer to lead the integration of DC fast charging technology with Battery Energy Storage Systems. The role involves developing system architecture, overseeing software integration, and ensuring compliance with industry standards. Ideal candi ...

Hands On Hardware QA & Validation Engineer

IntaPeople Limited is looking for a hands-on Test & Validation Engineer based in Cardiff for an initial 6-month project. This role emphasizes user-centric testing and requires a strong background in electronics or electrical engineering. You will be responsible for system-level testing, identifying defects, a ...

Senior Mechanical Design Engineer: Handheld Devices

ghd is seeking a Senior Mechanical Design Engineer to contribute to the design and development of premium consumer products in Cambridge. The ideal candidate has a strong background in mechanical engineering, at least 5 years' experience in product development, and proficiency in 3D CAD software such as PTC Creo ...

Shape Next Gen GPU Verification Engineer (Senior/Staff)

A leading semiconductor company in Cambridge seeks a Verification Engineer to test and validate next-generation graphics processors. This role involves collaborating with a diverse team to develop and implement test methodologies while engaging with both design and software teams. Candidates should possess stron ...

Senior Planning Engineer — Industrial & Manufacturing

A global professional services firm is seeking a Senior Planning Engineer to join their controls and performance team in Lincolnshire. This role involves overseeing the planning and scheduling of complex construction projects, ensuring efficient resource allocation and timely delivery. Candidates should have a B ...

Lead Stress Engineer — Aerospace & Defence

A dynamic engineering company in the UK is looking for a Stress Engineer to assess designs for structural integrity and ensure compliance with safety standards. The ideal candidate should possess a degree in Engineering and experience in stress analysis within aerospace or heavy engineering. This role involves u ...

Senior Mechanical Design Engineer — Hybrid, Growth Path

Synergy Personnel Services is looking for a Senior Mechanical Design Engineer to join their established consultancy in Nottingham. The ideal candidate should possess a background in Building Services, with expertise in design software such as AutoCAD and Revit. This role offers a competitive salary between GBP50 ...

🚀 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