Junior Java Full Stack Developer Jobs in UK

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Full Stack Software Engineer Data Observability & Operational Tooling

Accelerant is a data-driven risk exchange connecting underwriters of specialty insurance risk with risk capital providers. Accelerant was founded in 2018 by a group of longtime insurance industry executives and technology experts who shared a vision of rebuilding the way risk is exchanged – so that it work ...

Full Stack Software Engineer Data Observability & Operational Tooling

Full Stack Software Engineer - Data Observability & Operational Tooling About Accelerant Accelerant is a data-driven risk exchange connecting underwriters of specialty insurance risk with risk capital providers. Accelerant was founded in 2018 by a group of longtime insurance indus ...

Remote AI Backend & Full Stack Engineer (Python/React)

A recruitment agency is seeking a Remote AI Backend / Full-Stack Engineer to develop and scale an AI-powered travel platform. Candidates must have strong Python and FastAPI skills, experience building APIs, and familiarity with React for frontend components. This fully remote role offers tailored compensation ba ...

Lead Full Stack Architect for Live Service MMO

A leading gaming company is looking for an experienced Lead Full-Stack Developer to build and scale the architecture behind a large-scale live-service MMO. In this role, you'll lead a growing team, drive key architectural decisions, and ensure the systems you develop support player engagement and community inter ...

Full Stack AI Systems Engineer: Craft Reliable Workflows

Bjak is seeking a Full Stack Engineer - AI Systems in the United Kingdom to develop an AI chat application that emphasizes reliability and persistent workflows. Candidates should have strong experience across the full technology stack, including Next.js and Python, and be familiar with integrating AI and LLMs in ...

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 ...

Full Stack PHP Engineer — Hybrid, AI Driven Growth

A digital marketing company in the UK is looking for a Fullstack Engineer to enhance their tech stack. This position involves backend and frontend development using PHP, MySQL, HTML, CSS, and JavaScript, ensuring systems are scalable and robust. The ideal candidate will have a strong understanding of OOP in PHP ...

Full Stack Growth Engineer United Kingdom +2 more

About the role We are hiring for a Software Engineer on the growth team to focus on our self‑serve customers (consumer, prosumer, and self‑serve B2B) and product‑led growth. You'll operate at the intersection of engineering, product, and marketing. The work will be a mix of novel channel ...

Remote Full Stack Engineer .NET/Azure | Scalable SaaS

A UK-based software development company is seeking a Full Stack Engineer for a remote role. You will develop software on the .NET stack and contribute to Azure Services and DevOps practices for a scalable SaaS platform. Suitable candidates should have experience in .NET, Azure Services, and a self-driven work et ...

Staff Full Stack Engineer Remote AI Energy Platform

A leading energy technology firm in the United Kingdom is seeking a Staff Engineer to enhance product delivery and scalability across platforms. You will drive architectural direction, contribute to coding efforts, and lead the development of innovative systems for energy services. Ideal candidates have substant ...

Senior Full Stack & Data Engineer for Healthcare Analytics

Leap29 is seeking a strong Senior Full-Stack Engineer with extensive data skills to join a collaborative team in the healthcare sector. The role involves maintaining existing reporting systems and developing new solutions on modern data platforms. Candidates should have over 20 years of experience with C# and .N ...

Robotics Platform Engineer Full Stack & Real Time UI

VIKASO® | Robotics 4.0 is seeking a Full Stack Developer based in England. In this role, you'll develop high-quality software solutions for robotics, focusing on real-time user interfaces and backend services. The ideal candidate has at least 3 years of full-stack development experience, with a portfolio in Reac ...

Senior Full Stack Engineer Remote, AI Driven, Equity

Oliver Bernard is seeking a Senior Full Stack Engineer to join a growing B2B SaaS startup in the events space. This fully remote role requires expertise in Node, React, and TypeScript, with a strong emphasis on backend development and infrastructure management. You will be responsible for delivering project requ ...

Senior Full Stack Engineer Fintech & Maritime, Remote UK

A leading recruitment agency is seeking an experienced Senior Full Stack Engineer to join a cutting-edge financial technology company. This remote position offers a salary of up to £85,000 per annum. You'll be responsible for creating scalable systems and working in interdisciplinary teams to solve complex chall ...

Senior Full Stack Engineer: Python, React & AI UX

Project description Project is a web application running and visualizing scientific experiments and mathematical models. It focuses on allowing users to visualize different graphical plots - hence Plotly is in the center of work. Responsibilities The purpose of this role is to des ...

GenAI Lead Full Stack Architect for Scalable AI

Cavendish Professionals is seeking a GenAI Lead Full Stack Developer in the United Kingdom. In this role, you will drive the technical vision for Generative AI applications while overseeing the entire technical lifecycle. Your strong communication skills will be essential in collaborating with various stakeholde ...

Senior Full Stack Engineer (Python/React) — Remote & Equity

A leading technology company in the UK seeks a Senior Full Stack Engineer. You will contribute to developing a voice assistant platform, implementing scalable infrastructure, and working across the stack from UI to backend. Ideal candidates have 3+ years in software engineering, proficiency in Python and React, ...

Senior Full Stack Engineer — AI Voice Platform (UK)

A cutting-edge technology company in the United Kingdom is looking for a Senior Full Stack Engineer. The successful candidate will contribute to the development of voice assistant platforms, focusing on backend and frontend solutions. Applicants should have over three years of experience and expertise in Python ...

Senior Full Stack Engineer AI Driven Platform (Remote)

An education technology platform is seeking a full-stack engineer to design and build online learning features. The role requires strong Java and Node.js skills along with React and TypeScript. The successful candidate will use AI tools to enhance development, own production responsibilities, and contribute to a ...

Senior Full Stack Engineer (C#, .NET) Agile & Microservices

A technology innovation leader, Aqovia, is seeking a Senior C# Software Engineer to join their agile software development team in the UK. The role involves designing and building web applications and microservices, along with automating deployments. The ideal candidate excels in C#, .NET Framework, and modern we ...

Senior Full Stack Engineer: Python, React & AI UX

Project description Project is a web application running and visualizing scientific experiments and mathematical models. It focuses on allowing users to visualize different graphical plots - hence Plotly is in the center of work. Responsibilities The purpose of this role is to des ...

Senior Full Stack Engineer — AI Native & Forward Deployed

Smart Sourcer is seeking a Senior Full Stack Engineer to lead the development of a greenfield SaaS product. The ideal candidate has deep expertise in TypeScript and React, with experience working directly with clients to shape solutions as a Forward Deployed Engineer. This role involves architecting co ...

Senior Full Stack Engineer, Agents Team — Identity Tech

Mitek Systems is seeking a software developer in the United Kingdom to work on transformative mobile banking and identity authentication solutions. This role requires a Bachelor’s degree in computer science and significant experience in back-end programming with Vanilla JavaScript, React, and Go. Responsibilitie ...

Remote Full Stack Engineer for AI Model Training

Braintrust is seeking exceptional software engineers to help train generative AI models from anywhere in the United Kingdom. You will create technical content and review AI-generated code, with a focus on enhancing software development practices. Candidates should have at least 3 years experience, proficiency in ...

Senior Full Stack Engineer: Build & Own Scalable FinTech

A digital-first technology services firm in the UK is looking for a hands-on developer to create and enhance software products. The role involves designing RESTful APIs and managing databases, requiring strong Java and ReactJS skills. The ideal candidate will collaborate closely with teams and contribute to impa ...

Lead Full Stack Architect for Live Service MMO

A leading gaming company is looking for an experienced Lead Full-Stack Developer to build and scale the architecture behind a large-scale live-service MMO. In this role, you'll lead a growing team, drive key architectural decisions, and ensure the systems you develop support player engagement and community inter ...

Remote Senior Full Stack Engineer | SaaS Platform, Equity

A leading cybersecurity firm is looking for a Senior Software Engineer to develop a scalable SaaS platform and contribute to architectural decisions. Candidates should have over 7 years of software development experience with strong skills in TypeScript, Python, and a collaborative spirit. This role emphasizes t ...

Senior Full Stack Engineer — AI Native & Forward Deployed

Smart Sourcer is seeking a Senior Full Stack Engineer to lead the development of a greenfield SaaS product. The ideal candidate has deep expertise in TypeScript and React, with experience working directly with clients to shape solutions as a Forward Deployed Engineer. This role involves architecting co ...

GenAI Lead Full Stack Architect for Scalable AI

Cavendish Professionals is seeking a GenAI Lead Full Stack Developer in the United Kingdom. In this role, you will drive the technical vision for Generative AI applications while overseeing the entire technical lifecycle. Your strong communication skills will be essential in collaborating with various stakeholde ...

Senior Full Stack Engineer Remote, AI Driven, Equity

Oliver Bernard is seeking a Senior Full Stack Engineer to join a growing B2B SaaS startup in the events space. This fully remote role requires expertise in Node, React, and TypeScript, with a strong emphasis on backend development and infrastructure management. You will be responsible for delivering project requ ...

Senior Full Stack Engineer Remote, Global Impact & Growth

A technology-driven company is seeking a Senior Full Stack Engineer to join their team. In this fully remote role, you will design and build features for their platform, optimize performance, and collaborate with a global engineering team. Ideal candidates have extensive experience with Node.js, React, and AWS. ...

Public Sector Full Stack Engineer & Tech Lead (Remote)

Atos SE is seeking an Engineering Lead to join our Public Sector project in the UK. The role requires providing technical leadership, coaching, and mentoring for your team. You will engage directly with clients and be responsible for guiding team practices and adopting effective technologies. Familiarity with Ty ...

Senior Full Stack Engineer – Remote, Equity, High Impact

A profitable startup in the United Kingdom is seeking an experienced Full Stack/Backend engineer to join its elite team. You will have the opportunity to take full ownership of backend systems and work on infrastructure, APIs, and internal tooling. Ideal candidates should have over 3 years of experience in Pytho ...

Senior Full Stack Engineer — Remote & High Impact SaaS

Firstup, Inc. is searching for a Senior Full Stack Engineer in the United Kingdom who will design and deliver large-scale, multi-tenant cloud services. You will drive system performance and quality, collaborating closely with product and design teams to deliver intuitive user interfaces. This position ...

Lead Full Stack Engineer (Remote, .NET/Vue/React)

A leading remote tech company is seeking a Lead Full Stack Engineer to develop a cutting-edge SaaS platform for the insurance industry. In this fully remote role, you will lead both front-end and back-end development while mentoring junior developers. The ideal candidate has over 8 years of experience in full st ...

Full Stack Engineer (JavaScript), UK based US hours

Important note: This role is for US hours. 9-5pm PT (5pm-1am UK) Ready to apply Before you do, make sure to read all the details pertaining to this job in the description below.FlatPlan is the leading Apple News technology and strategy provider, working with 230+ consum ...

Senior Full Stack Engineer (Python/React) TOP COMPANY!

Senior Full Stack Engineer (Python/React) -TOP COMPANY!This is a Perm roleIn partnership with Robert Half LtdLocation: Central London (Work Pattern 2 days in office and 3 days from home)You'll be joining a top-tier, high-standards engineering environment with str ...

Senior Full Stack Engineer (Python/React) TOP COMPANY!

Senior Full Stack Engineer (Python/React) -TOP COMPANY!This is a Perm roleIn partnership with Robert Half LtdLocation: Central London (Work Pattern 2 days in office and 3 days from home)You'll be joining a top-tier, high-standards engineering environment with str ...

Senior Software Engineer — Backend & Full‑Stack (Django/AWS)

A fast-growing B2B tech company based in London is seeking a hands-on Senior Software Engineer. You will drive the technical and product evolution and work on building full-stack solutions, integrating with external systems, and collaborating with diverse teams. The ideal candidate should have strong experience ...

Senior Full Stack Engineer — AI/LLM, Remote UK

A tech-driven startup in the UK is seeking a Senior Full-Stack Engineer to spearhead the development of LLM-powered products in marketing technology. You will lead architecture design, conduct code reviews, and collaborate with cross-functional teams. The ideal candidate has 5+ years of full-stack experience, st ...

Senior Full Stack Engineer — FinTech Builder, Stock Options

A dynamic tech company in the UK is seeking a full-stack engineer with at least 5 years of experience to work on backend and mobile/web applications. The role involves developing new features and integrations in a fast-paced setting. Candidates should be excited about innovation and possess strong problem-solvin ...

Remote Senior Full Stack Engineer — React/TypeScript/Node.js

A leading technology firm in the UK is seeking a Senior Full Stack Engineer skilled in React and TypeScript. This role is remote with occasional team meetups in London. Responsibilities include contributing to technical discussions and tackling complex challenges in the Fintech sector. Ideal candidates will poss ...

Full Stack .NET Lead Cloud & Front End Innovator

Java Script Works is seeking a skilled Developer in the United Kingdom. The role includes leadership responsibilities and requires expertise in .NET (C#) for backend development. Ideal candidates will have solid experience with JavaScript, HTML, SASS, MVC, and modern front-end practices. Familiarity with Knockou ...

Senior Full Stack Engineer — Build DevTools (Remote, Equity)

A leading cloud analytics company in the UK is seeking a Senior Full Stack Engineer to enhance their HyperDX platform. This role involves building key product features and collaborating with the developer community while working with modern technologies like TypeScript, Node.js, and React. The position offers a ...

Senior Full‑Stack Engineer — Health Tech Shop/Ecosystem

A digital health company in the UK is looking for a Senior Fullstack Engineer to build features for Juniper and its expanding ecosystem. This role involves using React and Go/Node.js, alongside cross-functional collaboration. Candidates should have strong frontend skills and backend development experience. Join ...

Senior Full Stack Engineer — Remote, Clean Energy Platform

Antler is seeking a Senior Software Engineer to develop the Logiq platform, which provides operational intelligence for clean energy systems. This full-time remote role requires experience in full-stack development with Python and React, and familiarity with AWS technologies. The ideal candidate will help shape ...

Senior Full Stack Engineer Remote (PHP/Symfony + Angular)

A high-growth B2B SaaS company is seeking a Senior Full Stack Engineer with expertise in PHP and Symfony. This fully remote role involves building and maintaining APIs, contributing to front-end development with Angular, and mentoring other team members. Candidates should have strong communication skills and a p ...

Senior Java Engineer Architecture & Mentorship

DP World is seeking an experienced Senior Developer in Southampton to lead the design, development, and maintenance of high-quality software solutions for customs and logistics platforms. The ideal candidate will have strong Java expertise and experience with Spring, Hibernate, and CI/CD practices. Responsibilit ...

Senior Full Stack Engineer — AI/LLM, Remote UK

A tech-driven startup in the UK is seeking a Senior Full-Stack Engineer to spearhead the development of LLM-powered products in marketing technology. You will lead architecture design, conduct code reviews, and collaborate with cross-functional teams. The ideal candidate has 5+ years of full-stack experience, st ...

Senior Full Stack Engineer Remote (PHP/Symfony + Angular)

A high-growth B2B SaaS company is seeking a Senior Full Stack Engineer with expertise in PHP and Symfony. This fully remote role involves building and maintaining APIs, contributing to front-end development with Angular, and mentoring other team members. Candidates should have strong communication skills and a p ...

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    Junior Java Full Stack Developer Jobs in United Kingdom Job Search Guide, Trends and Insights