1,937,552+ Lead Software Engineer Full Stack Java React Jobs in UK — Top Companies Hiring July 2026

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Open Stack, Salesforce & React Native Specialists Cheshire

Salesforce & React Native Specialists - London Atrium EMEA are looking for several Salesforce & React Native Specialists to support the Development teams onsite with a client in London. 12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. 3 x Salesforce & ...

Senior Software Engineer

We have partnered with our client in their search for a Senior Software Engineer to help redesign and deliver a market-leading front-to-back OTC derivatives solution.Responsibilities Lead and manage development team, including work assignments and professional developmentServe as Scrum ...

Staff Software Engineer (Kotlin/Java) HealthTech, Equity, Hybrid

Client Server is seeking a Staff Software Engineer / Developer (Kotlin Java JVM) in Greater London. In this hybrid role, you will join a HealthTech startup focused on improving patient care through innovative technology. The position involves working hands-on on Greenfield applications with a tech stack inclu ...

Full Stack Node.JS Developer Reading Hybrid

Job Description Senior Software Developer – B2B SaaS – Retail Market Intelligence - Hybrid working (South East / London area + remote) - Up to 60k + bensPermanent role – 50-60k + benefitsTech stack: Node.js, TypeScript, React, Redux, PostgreSQL, AWSIndustry: B2 ...

Software Engineer

Software Engineer - Hybrid - Up to £90,000OverviewFuel Recruitment is supporting a leading technology organisation that is looking for a Software Engineer to join its established development team. This role offers the chance to work across modern Front End and Back End technologies, contributing to high- ...

.NET Software Engineer

Job Overview .NET Software Engineer – World Class Entertainment Company – Solingen, Germany Technical Stack .NET 10.0 ASP.NET Core C# 14 Blazor JavaScript React Microservices Azure ASP. ...

Senior Software Engineer (JVM, Kotlin)

Senior Software Engineer (JVM, Kotlin)Simple MachinesHybrid · Full-time · London, UKAbout Simple MachinesSimple Machines is a leading independent boutique technology firm with a global footprint across London, Poland, Sydney and New Zealand. We operate at t ...

Senior Full Stack Engineer — Climate Tech, Remote

The Science Based Targets initiative (SBTi) is looking for a skilled Senior Full-Stack Software Engineer. In this full-time role based in the UK, you will support the technology infrastructure crucial to corporate climate action efforts. Your expertise in building efficient systems with TypeScript, Rea ...

Data Engineer II Decision Analytics in London American Express Global Business Travel (GBT)

Skills Infrastructure as code, automated testing, and code reviews. Optional Skills Experience with full-stack development using JavaScript, React, Java, or Flask for building small scale applications or internal tools. Ability to develop and maintain data-centri ...

Product Engineer

Oliver Bernard is once again partnered with one of the fastest growing Fintechs in the UK. They are looking for a Senior‑Level Product Engineer to work across the Full Stack, this role is high ownership and a chance to assist in making finance more accessible and transparent. Why you’ll love it </h ...

Full Stack AI HealthTech Engineer: Scale & Impact

A HealthTech company in Manchester is seeking a full-stack software engineer to join their growing product and engineering team. You'll design and build applications for thousands of users while ensuring high performance and seamless user experience. With a focus on technologies like Python and React, you’ll wor ...

Senior Full Stack Engineer — Flexible Hours & Tech Impact

Job Search Place Limited is seeking a Senior Software Engineer based in London. This role involves shipping features across the full stack using technologies like Node.js and React. Candidates should have a minimum of 8 years of experience, ideally in a startup environment. The successful candidate wil ...

Senior Lead Developer – React & React Native (Cardiff)

Sadler Recruitment is seeking a Lead Developer to join a vibrant team in Central Cardiff. This role is pivotal in defining the technical direction and enforcing coding standards for diverse development projects. You will lead a talented team, ensuring that technical decisions align with business objectives wh ...

Java UI Developer

Job Role: Java UI Developer Job Location: London, UK (4 days per week from office) Job Type : Contract (6 months ) / Perm Job Description: Role Overview: Full Stac ...

Java UI Developer

Job Role: Java UI Developer Job Location: London, UK (4 days per week from office) Job Type : Contract (6 months ) / Perm Job Description: Role Overview: Full Stac ...

Software Engineering Manager International E Commerce

Job Description Position within M&S and its Digital & Technology team. What you'll do Build, mentor, and manage a high‑performing software engineering team focused on collaboration, innovation, and continuous improvement. Oversee the planning, execution, and deli ...

Lead Engineer – Building the Future of Global Sports Technology! (Leading Global Technology Company)

I am recruiting for a LEAD ENGINEER for a Global Tech Sports Performance Company..... This is a chance to help build products that are used by athletes, coaches, and teams across every major sport worldwide! As a business, they are working on technology that powers elite performanc ...

Remote Senior Fullstack Engineer TS/Next.js

Huzzle is seeking a Full-Stack Software Engineer to work fully remotely on innovative SaaS products. This role focuses on developing features for an AI-driven sales intelligence platform and a healthcare B2B platform, ensuring high-quality output and collaboration within a dynamic team. You will bring 2–4+ years ...

Remote Full Stack Engineer for Platform & Banking Infra

A next-gen financial infrastructure platform seeks a Full-Stack Software Engineer to design and build robust solutions for their core banking ledger. This fully remote role requires expertise in Go and React, alongside a strong understanding of AI-driven development practices. The ideal candidate will work on cr ...

Specialist Software Engineering

Role description Role: Java & CloudNative Location: London / Warsaw – 3 days from office Type: Perm/FTE Job Summary Seeking a Specialist with 5 to 7 years of experience in Core Java React and cloud native technologies to design, develop, and maintain scalable applicat ...

Fullstack Software Engineer Core

Dataiku is The Universal AI Platform, giving organizations control over their AI talent, processes, and technologies to unleash the creation of analytics, models, and agents. Providing no-, low-, and full-code capabilities, Dataiku meets teams where they are today, allowing them to begin building with AI usin ...

Fullstack Software Engineer Core

Dataiku is The Universal AI Platform, giving organizations control over their AI talent, processes, and technologies to unleash the creation of analytics, models, and agents. Providing no-, low-, and full-code capabilities, Dataiku meets teams where they are today, allowing them to begin building with AI usin ...

Senior Software Engineer London

Salary: £80,000 - 95,000 per year Requirements A hands-on background within a Ruby, Rails, TypeScript, React, AWS or similar stack Excellent problem-solving skills and the ability to work in a collaborative product-led team Advocate for Software engineering be ...

Senior Full Stack AI Engineer: Build Production Ready AI

A leading technology company is seeking a Full Stack Engineer to join their team in Birmingham. The ideal candidate will have 5+ years of experience in software engineering and be proficient in React, TypeScript, Python, and Node or Go. This role involves building and shipping AI-driven features and requires a s ...

Hybrid Full Stack Engineer Build Next Gen Banking Tech

A leading fintech company in London is seeking a skilled Software Engineer to design and implement modern banking solutions. You will work on the full stack, developing both backend services and frontend applications. The ideal candidate has extensive experience with React and TypeScript, alongside a passion for ...

Senior Full Stack Engineer AI Powered Wellness Platform

A healthtech SaaS startup in London is seeking a Full Stack Software Engineer to help shape a B2B2C platform focused on stress reduction and resilience. The role requires extensive experience in developing solutions using React, Python, and Django. The ideal candidate should have a strong interest in wellbeing t ...

Senior Software Engineer – Frontend & API for Scalable Apps

G.Digital in Manchester is looking for a Senior Software Engineer to build products that shape customer experiences. This role emphasizes product development, working within a team on business-critical journeys and creating intuitive digital products. You will create scalable full-stack applications an ...

Java UI Developer

Job Role: Java UI DeveloperJob Location: London, UK (4 days per week from office)Job Type : Contract (6 months ) / PermJob Description:Role Overview:Full Stack Developer with expertise in Java Spring Boot and React JS to build scalable microservices and modern front-end applications, leveraging AI-assisted tools ...

Software Engineer

Job Description Software Engineer - Farnborough - Hybrid - £70,000 - £80,000A growing technology organisation operating within highly secure environments is looking to hire Software Engineers to support and evolve critical Software programmes. Responsibilities: ...

Software Engineer

Job Description Software Engineer - Farnborough - Hybrid - £70,000 - £80,000A growing technology organisation operating within highly secure environments is looking to hire Software Engineers to support and evolve critical Software programmes. Responsibilities: ...

Senior Frontend Lead — TypeScript & React for AI Interfaces

Job Search Place Limited is seeking a Full Stack Engineer specializing in front-end development (React) to join their innovative team in London. In this role, you will lead the creation of user-friendly interfaces for next-generation AI agents, significantly influencing product direction. The ideal can ...

Senior Software Developer

**Date Posted:** 2026-05-13**Country:** United Kingdom**Location:** Warminster, Wiltshire**Position Role Type:** Hybrid Raytheon UK is searching for a Senior Software Engineer to join our OMNIA® Training team. As Senior Software Engineer, you will ...

Senior Full Stack Engineer, Data Platform & APIs

Allegis Group is seeking a Senior Fullstack Engineer to join their Data Platform team in the United Kingdom. You will play a key role in building scalable services, APIs, and internal tools that support millions of users globally. The ideal candidate has strong experience in Java backend development an ...

Senior Full Stack Engineer Remote Trading API

Alpaca is seeking a Senior Full-Stack Engineer to enhance their systems and services while empowering users who trade billions of dollars' worth of assets. The role involves designing user experiences and product features for Trading API customers, and collaborating with cross-functional teams to deliver high ...

Remote Full Stack Engineer — Impactful Work & Growth

Huzzle is seeking a skilled Full Stack Engineer to join their high-performing remote team. In this exciting role, you'll design, develop, and maintain scalable web applications across frontend and backend systems. Candidates should have 3+ years of experience, strong proficiency in modern frameworks like JavaScr ...

Full Stack Python Engineer for Data & Security

A leading simulation and data-analytics company in the UK is looking for a Full Stack Software Developer to enhance their engineering team. This mid-level position requires strong back-end skills, ideally in Python, with a focus on SQL and NoSQL data management. Collaborating with various stakeholders, the succe ...

Full Stack .NET & Azure Engineer Client Portal

A global materials testing company is seeking a Full Stack Software Developer to join their team in the UK. You will design and develop applications for the Client Portal as part of a digital transformation initiative. The ideal candidate will be proficient in C# and .NET, have solid Azure experience, and displa ...

Full Stack Engineer – Node.js/Python | Hybrid, Impact

A global technology company in the United Kingdom is seeking a Software Engineer to develop innovative surveillance camera systems. This hybrid role involves using Node.js and Python to build server-side applications and creating user interfaces with modern JavaScript frameworks. The ideal candidate will have a ...

Senior Full Stack Engineer (Front End Leaning)

Responsibilities Build and ship features for North, our AI workspace platform. Develop autonomous agents that talk to sensitive enterprise data. Write and ship minimal code that runs in low-resource environments, and has highly stringent deployment mechanisms. ...

Full Stack Engineer (AI/ML, Python, Agentic)

Full Stack Engineer (AI/ML, Python, Agentic) – Global Tech Company – London Day rate: £500 – £700 (inside IR35)Duration: 12 months Hybrid: 3 days per week Start: ASAP My exciting new client is looking for a Full Stack Engineer with AI/ML and Python experience. H ...

Fintech Pensions — Senior Full Stack Engineer (Remote)

A leading recruitment agency in the United Kingdom is seeking a Lead Engineer to join a fintech startup focusing on pensions. The ideal candidate will possess skills in full stack development using React, Node.js, and TypeScript. This mid-senior level position allows for growth, even for those without prior peop ...

Remote ML & Data Integration Full Stack Engineer

A specialist recruitment partner is seeking a Full Stack Engineer for a remote-first role based in the UK. This position involves building data-powered applications integrating machine learning and analytics. Candidates need strong experience in full stack development and familiarity with cloud platforms like Az ...

Software Engineer

Salary: £45,000 - 50,000 per year Requirements: Professional experience in C# and .NET, including ASP.NET Core. Solid React frontend development experience. Proven ability to implement UI from Figma or similar design tools. Strong understanding ...

Software Engineer

Salary: £45,000 - 50,000 per year Requirements: Professional experience in C# and .NET, including ASP.NET Core. Solid React frontend development experience. Proven ability to implement UI from Figma or similar design tools. Strong understanding ...

Senior Frontend Engineer React/TypeScript

Java Script Works is seeking a Senior Software Engineer (Frontend) in Edinburgh. This role involves designing and developing high-quality frontend services using technologies like JavaScript, TypeScript, and React. Candidates will also have the opportunity to implement DevOps practices. Competitive sal ...

Full Stack AI Engineer for Decarbonization Platform

IFS is seeking a talented engineer to develop innovative AI solutions that aid industrial organizations in their decarbonization journey. The role involves building cloud-based solutions and delivering secure, high-quality software for both front-end and back-end applications. The ideal candidate shoul ...

Full Stack JavaScript Engineer: Next.js & API Expert

A growing tech company near London is seeking talented Full Stack JavaScript Developers to join their team. This role involves developing high-quality web applications using JavaScript and the Next.js framework, managing databases, and integrating APIs. Candidates should have strong JavaScript skills and a proac ...

Senior Full Stack Product Engineer — Hybrid/Remote

A leading software company for subcontractors in the UK seeks a Senior Full-Stack Product Engineer. You will take ownership of developing features from concept to deployment, focusing on user experience and best practices. The role involves collaboration with product teams and mentoring fellow engineers. This po ...

Mid‑Senior Full‑Stack Engineer — Hybrid & Training

A leading digital comparison service in the United Kingdom is looking for a Full Stack Engineer to join their rapidly growing technology team. This role involves hands-on development in both front-end and back-end systems, mentoring junior developers, and making impactful technical decisions. Ideal candidates sh ...

Front End Engineer

Front End Engineer My client, a large consultancy, is in need of a Front End Engineer for a 6 month contract inside IR35 based in Bristol offering 2 days per week remote but requiring 3 days per week on-site. The ideal candidate will have strong experience in React, JavaScript/TypeSc ...

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