2,335,978+ Full Stack Software Engineer Javascript React Elixir Jobs in UK — Top Companies Hiring July 2026

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Senior Mechanical Design Engineer (MEP) – Lead Projects

IN2 Engineering Design Partnership based in Belfast is seeking a Senior Mechanical Design Engineer to lead mechanical design projects. You'll collaborate closely with clients on various sectors including commercial and healthcare, ensuring high-quality engineering solutions. The role offers flexible hours and ...

Senior AI Product Engineer Document AI & LLMs

Puma Energy is seeking a Senior Product Engineer to develop AI applications that enhance trading operations. In this hands-on role, you'll create robust backend services and build efficient document processing systems, collaborating with both technical teams and stakeholders. The ideal candidate will h ...

Senior DevOps Engineer | AWS, Kubernetes & CI/CD Expert

Tain is seeking a DevOps Engineer based in Greater London, UK, to enhance our development processes and maintain the resilience of our cloud infrastructure. You will oversee global cloud operations, ensuring high availability and performance. The ideal candidate has at least 5 years of experience, particularl ...

Staff Backend Engineer Distributed Systems & Lakehouse

A leading data and AI company in Greater London is seeking an experienced Software Engineer to join as a founding member of their London site. The role involves tackling complex technical challenges across various domains and contributing to the development of scalable, secure services. Candidates should have ov ...

Green Tech Python Fullstack Engineer (AWS)

A leading energy-tech company in the Greater London area is seeking a Python Software Engineer to join their core product team. The ideal candidate will work in a hybrid environment, resolving critical engineering challenges in a fast-paced green tech setting. They will have ownership over design decisions, cont ...

VP, Low Latency Trading Systems Architect

Citi is seeking a Software Engineer in London to join the Equities Electronic-Execution technology team. This role involves designing and developing next-generation low-latency execution platforms that encompass algorithmic trading and market data processing. The candidate will collaborate with a cross ...

Senior Platform Engineer Cloud Infra & Scaleouts

Cogna, located in Greater London, is on the lookout for a seasoned Platform Engineer to join their innovative team. The ideal candidate will have over 10 years of cloud platform experience, a strong software engineering background, and expertise in tools like Terraform and Kubernetes. This role offers a unique o ...

ML Systems Research Engineer (Hybrid) London

A leading AI research firm is seeking a passionate Software Engineer for a hybrid role in King's Cross, London. The position focuses on advancing machine learning and AI technologies, with responsibilities including conducting cutting-edge research and collaborating with cross-functional teams. Candidates should ...

Backend API Engineer | Remote, Equity, Travel Allowance

Duffel is hiring a Software Engineer to join their team in London. This role is focused on building tools for travel distribution and booking through a seamless API. You will work on the core API that powers millions of travel bookings, ensuring high standards in design and developer experience. This p ...

Automation QA Engineer – End to End & Integrations

A technology solutions firm in England is looking for a skilled software quality assurance engineer to collaborate with cross-functional teams. The ideal candidate will have a Master's degree in computer science, strong experience in QA automation, and proficient in SQL. Responsibilities include creating test st ...

Europe Payments Engineer – Open Banking & APIs

Plaid is looking for a Software Engineer to join their Europe team in Greater London. In this role, you will develop and enhance Europe-specific payments and credit products, working closely with diverse teams across the company. Responsibilities include iterating on new products, understanding client needs, ...

Senior Platform Engineer: Build Scalable Cloud Platforms

A leading technology firm in Budock Water is looking for a Senior Platform Engineer to lead the design of key components in a modern digital service platform. You will collaborate with various teams, ensure high-quality software delivery, and contribute to significant projects in Defence and National Security. I ...

Java Backend Engineer II — Scalable API Innovation

Tesco is seeking a Software Development Engineer II to join its Lists and Substitutions Team in Greater London. In this role, you will develop high-performance backend APIs that enhance the shopping experience for millions of customers. Responsibilities include coding in Java, participating in planning sessions, ...

Hybrid Fullstack Engineer: Build AI Driven NHS Care

A leading healthcare technology firm is seeking a Fullstack Engineer to help improve access to autism and ADHD assessments. Located in Greater London, this hybrid role allows you to work from home and the office. You'll collaborate with various teams to enhance the Paloma Portal and contribute to patient care th ...

C++ Messaging Systems Engineer (Hybrid, London)

ASHDOWN GROUP is seeking a C++ Software Engineer to join their growing team in South West London. This role offers the opportunity to work on critical messaging products in a hybrid environment, ensuring compatibility across multiple protocols. Candidates should have solid C++ experience, a degree in a ...

VP Java Engineer, Trading Tech (Equities) – Hybrid

A leading global financial services firm in Greater London is seeking a Software Engineer for its Equities Technology team. The role involves collaborating with global teams and delivering business solutions through agile methodologies. Required qualifications include 6-10 years of experience in application deve ...

Graduate Optical Engineer: Design Next Gen AI Optics

Oriole Networks in Paignton is seeking an Optical Engineer to design, build, and test optical systems for high-precision instruments. The role involves collaborating with mechanical, electronic, and software engineers, along with utilizing cutting-edge technologies for optimal performance. Key qualifications inc ...

Senior HV Cable Design Engineer Renewable & Grid Projects

A global engineering consultancy seeks an experienced HV Cable Design Engineer to join their Energy Team in Greater London. The role involves responsibilities in electrical substation design and major renewable projects like HVDC interconnectors. Candidates should possess a relevant degree in Electrical Engineer ...

Senior Embedded Firmware Engineer — Defence UAS (Remote)

A leading aerospace technology firm in the United Kingdom is seeking an experienced Senior Embedded Software Engineer to design and develop embedded firmware for advanced counter-drone technology. You will work primarily in a remote capacity but must be eligible for UK Security Clearance, having resided in the U ...

Senior Unity Graphics Engineer Hybrid

Sports Interactive is looking for an Advanced Software Engineer specializing in graphics to join their team in London. The role involves improving the visual quality of Football Manager through collaboration with artists and engineers, primarily using Unity as the game engine. Applicants should have ov ...

VR Teleoperation Engineer for Low Latency Robotic Control

Groupe-Ebra-1 is looking for a Software Control Teleoperation Engineer based in London. This role focuses on developing VR-based teleoperation systems for humanoid robots, involving real-time communication and immersive VR development. The ideal candidate will have a strong background in computer engin ...

Senior RL Data Engineer End to End Pipelines

Anthropic is seeking a senior engineer to take ownership of foundational AI data systems. This hands-on role includes architecture decisions, building data pipelines, and improving QA frameworks. Located in Greater London, the role requires strong software engineering skills in Python or TypeScript and ...

Senior Civil Engineer – Infrastructure & Maritime Design

Haskoning in Aberdeen is seeking a Senior Civil Engineer with at least 8 years of experience in drainage design and civil engineering. The successful candidate will ensure that designs adhere to the best practices and standards while providing innovative solutions for a variety of projects. The role re ...

Senior Backend Python Engineer – AI Cybersecurity (Cambridge)

Client Server is seeking a Backend Software Engineer / Developer specializing in Python and Rust, to join their office in Cambridge. The role involves developing a new Greenfield product aimed at countering AI-based security threats and requires experience with AWS, Azure, or GCP. The position offers a ...

Pre Sales Solution Engineer – API & Integration

B Capital is seeking a motivated Solution Engineer to join our Pre-Sales team in the UK. You will play a key role in driving growth for MuleSoft and Informatica by serving as a trusted advisor to prospective clients. Your responsibilities will include collaborating with Account Executives throughout th ...

High Performance Equities Risk Java Engineer

3761 Barclays - BX - UK is looking for an Equities Risk Software Engineer in London. The role involves building high-performance Java services that support critical risk functions while focusing on reliability and scalability in a container environment. Applicants should have solid Java and concurrency ...

Rust Engineer — Build Scalable Platforms for Investments

Oliver Bernard has partnered with a leading global investment management firm seeking a Rust Engineer. This critical role involves designing and building internal frameworks and tools that directly impact both technology and investment teams. The ideal candidate should have 6+ years of software develop ...

Go Backend Engineer IAM on Kubernetes

Neo4j is looking for an experienced Backend Software Engineer to join our Identity and Access Management team. In this role, you will help rebuild our IAM platform, focusing on creating cloud-native services in GoLang and custom Kubernetes components. With a passion for secure and scalable IAM solution ...

IT Support Engineer – 1st/2nd Line, In Office

ShortList Recruitment Limited is looking for an IT Support Engineer to join a team in Stockport. This role is perfect for fresh graduates or those early in their IT careers. You'll handle 1st and 2nd line support and assist with hardware and software installations. The ideal candidate will have strong ...

Senior Java Engineer – AI Driven Distributed Platform

Synechron is seeking a Senior Java Engineer in Greater London to design, build, and maintain complex Java and Python applications. This role involves developing AI-powered features and architecting scalable systems for critical index computation. We are looking for candidates with over 10 years of expe ...

Senior Backend Engineer Golang & TypeScript (Remote)

Threecolts is looking for a skilled Software Engineer to join our innovative team in Bath, UK. The role requires strong expertise in Golang and TypeScript, with a focus on building and maintaining scalable backend services and APIs. You'll work independently on defined projects while collaborating closely wit ...

Lead Distributed Systems Engineer .NET / C#

Platform Recruitment is seeking a Principal Software Engineer for a leading technology company in Cambridgeshire. You will be responsible for shaping the technical direction, leading the architecture of distributed systems, and mentoring other engineers. The ideal candidate will have over 10 years of e ...

Lead AWS DevOps Engineer — CI/CD, Kubernetes

IBM is seeking a Senior AWS DevOps Engineer to join their team in the East Midlands. In this role, you will lead initiatives to automate software delivery processes and mentor junior engineers, contributing to IBM’s strategic direction in modern DevOps practices. The ideal candidate will have strong ex ...

Healthcare IT Integrations Engineer: EHRs & HIPAA

A healthcare technology firm in Birmingham is seeking an experienced Integration Engineer to join its technical team. In this role, you will be responsible for developing and maintaining integrations with various healthcare systems, ensuring compliance with regulations. The ideal candidate holds a Bachelor's deg ...

Senior AI Engineer Production Grade LLM & Agent Systems

A financial services company in Greater London is seeking a Senior AI Engineer to design and deliver AI systems integral to their business processes. This hands-on role involves building production-grade solutions utilizing LLMs and agentic systems, contributing significantly to the technical direction and archi ...

Senior Automation QA Engineer Remote & Flexible

A leading technology solutions provider in Northern Ireland is seeking a Software Engineer in Test to join their agile team. The ideal candidate will have experience in both manual and automated testing across various frameworks. This role offers a comprehensive benefits package focused on employee wellbeing, ca ...

Senior Traffic Engineer: Shape Future Transport

A leading engineering firm is seeking a Senior / Principal Traffic Engineer to shape future transport solutions in Birmingham. This role involves delivering robust transport strategies and mentoring junior engineers while ensuring compliance and safety. With a hybrid working model, you will guide multidisciplina ...

Senior DevOps Lead: Automate, Deploy & Scale in AWS

IF1874 GE Energy Power Conversion UK Limited is looking for a Lead DevOps Engineer to enhance the software development lifecycle through automation and collaboration. Responsibilities include managing CI/CD pipelines, optimizing cloud environments (primarily AWS), and mentoring junior engineers. The id ...

Senior Test Engineer — Automate Quality in Cloud Apps

Kainos is looking for a Senior Test Engineer to join their agile team in Belfast, Northern Ireland. In this role, you will develop and execute tests to ensure that application software meets user needs, while also learning new technologies. Kainos is committed to a people-first culture that values diversity a ...

Real Time Risk & P&L Tech Lead Python & Cloud

JPMorganChase in Greater London seeks a Senior Lead Software Engineer to innovate in Global Credit Trading Technology. You will architect real-time risk and P&L systems, collaborating with traders and analysts to enhance trading platforms while ensuring low-latency performance. The ideal candidate has ...

Product Security Engineer: Build Secure, Scalable Features

Hard Yaka is seeking a Security Engineer, Product Security to join our team in Greater London. In this role, you'll help build secure products by collaborating closely with engineering teams and product managers to identify risks early and improve security quality across the software development lifecycle. </ ...

Golang Backend Engineer for Global Loyalty Platform

CBTS is seeking an enthusiastic Golang Software Engineer in Greater London to work on a global Loyalty and Benefits platform for American Express. The role involves building features within a microservice architecture, requiring strong technical skills and teamwork. The ideal candidate will have experience in ba ...

Senior Java Platform Engineer | Spring Boot, K8s, Cloud

NextWave Consulting Ltd is seeking a Senior Software Engineer in the UK with hybrid work options. The successful candidate will lead the development of a scalable Data Fabric platform, focusing on Java and Spring Boot microservices while mentoring team members. Required skills include hands-on experience in CI/C ...

Front End Engineer Internal Audit (Analyst/Associate)

Goldman Sachs Bank AG is seeking a Front End Engineer to join their Internal Audit Engineering group in Birmingham. In this role, you will design and implement software solutions that enhance audit services and support business functions across the firm. The ideal candidate has a Bachelor's degree in C ...

Senior Backend Engineer, GraphQL & AI Search Platform

RELX is seeking a Senior Software Engineer I to enhance its Search and AI Platform. This role involves designing graph-based search services and developing scalable applications using Java and Spring Boot. With a focus on delivering intelligent solutions, you'll collaborate with product teams to implement rob ...

Product Security Architect Threat Modelling & Secure SDLC

Sivara GmbH in the UK seeks a Senior Product Security Engineer to lead security initiatives across product and development teams. The role requires strong experience in product security and secure software engineering practices. You will engage with cross-functional stakeholders, ensuring that security ...

Senior ML Engineer: Real Time Personalization & Recommendations

APPLE is seeking an experienced Software or Machine Learning Engineer to join the Music ML team in London. The role focuses on building and improving personalization features for Apple Music, ensuring a great user experience while respecting privacy. Your responsibilities will include developing large- ...

Lead UI Engineer for AI Powered Interfaces (Hybrid)

Rebel Recruitment Limited is looking for a talented Mid to Senior UI Engineer in Lincolnshire. You'll lead the development of user interfaces, translating complex functionality into user-friendly designs. This role involves collaborating with AI and software engineers to create innovative applications. ...

Junior Data Intelligence Engineer

Flex Employee Services in Edinburgh is seeking an Associate Software Engineer to work on exciting projects such as the Financial Data Lakehouse. This role offers the chance to develop innovative solutions that enhance data management in finance. The ideal candidate must hold a Bachelor's degree in a re ...

C++ Application Engineer – 4 Day Week, Hybrid (Defence)

Sivara GmbH, a leading defense organization, is seeking 3 C++ Application Software Engineer subcontractors for an initial 12-month contract in Bradley Stoke, UK. This role offers a competitive salary of £78,000 per year and involves exciting work in a Command and Control application project. Candidates ...

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