253,111+ Fullstack Software Engineer Java React Aws Jobs in UK — Top Companies Hiring June 2026

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Senior Mechanical Engineer | BIM & Building Services Lead

A leading engineering consultancy in Manchester is seeking a Principal Mechanical Engineer to join their MEP team. This role involves leading mechanical design projects and managing engineers, ensuring compliance with both client requirements and industry standards. Candidates should have significant experience ...

Senior Structural Engineer HV Substations Lead

A leading green energy company in Creswell is seeking an experienced Senior Structural Engineer to focus on the design and analysis of High Voltage substations. This role requires a bachelor’s or master’s degree in Civil or Structural Engineering and 5+ years of relevant experience. Responsibilities include lead ...

Senior Applied AI/ML Engineer — Build & Deploy Scalable AI

JPMorgan Chase & Co. is seeking a Senior Associate, Applied AI/ML Engineer to aid customers in deploying AI/ML models effectively. This crucial role involves assisting in the construction of models, ensuring observability, and optimizing data processing pipelines. The ideal candidate will possess exten ...

BMS Commissioning Engineer

Working on behalf of our client based in the West Midlands. We are currently recruiting for a Commissioning Engineer. Key Duties: Work on-site for commissioning projects (majority based in the West Midlands). Occasional projects outside of this area (travel e ...

Senior Data Engineer — Scale Big Data Pipelines & Insights

Narvar is seeking a highly skilled Senior Software Engineer to join our Data Engineering team in the Greater London area. In this role, you will lead the design and development of data pipelines and systems capable of efficiently managing large datasets. You will collaborate with cross-functional teams ...

Lead Cloud Engineer

Zaizi is looking for a Cloud Engineer with experience working across National Security (This role will require active eDV Clearance.) We are looking for someone who has demonstrable experience of automating the software delivery pipeline within a highly scalable syst ...

Senior AI Research Engineer Ocean Data & Models

A leading oceanographic research institution in the UK is looking for an AI Research Software Engineer to develop AI infrastructure and models that advance marine sciences. This full-time role offers the opportunity to lead teams and work within a vibrant community focused on innovative oceanographic research. T ...

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 ...

Aerospace Engineer

Are you an early-career engineer looking to build your experience in aerospace or a highly regulated environment? Do you enjoy detail-focused work, ensuring designs meet standards and requirements? Would you like to develop your skills across mechanical, electronic, and softwa ...

Senior Civil Engineer – Infrastructure Design Lead (Midlands)

A leading UK multidisciplinary consultancy is seeking an experienced Senior Civil Engineer to join their team in Birmingham. In this role, you will lead the design and delivery of civil engineering solutions for various development projects. You will collaborate with multidisciplinary teams, manage client relati ...

Design Manager Lead Innovation & Delivery

Wagstaff Recruitment in Wakefield is seeking an experienced engineer to lead the development of new techniques and manage projects. You will be responsible for guiding projects from concept to execution while ensuring timely delivery and maintaining quality standards. The role requires a Bachelor’s or ...

Staff Backend Engineer — Low Latency Trading APIs

Robinhood is looking for a Staff Software Engineer to join our Core Exchange team in London, where the mission is to create a best-in-class trading experience. Ideal candidates should have over 10 years of backend engineering experience and a strong focus on designing high-performance systems. The role ...

Senior IT Engineer Healthcare IT & On Call

NHS in Kendal is seeking a Senior IT Engineer to provide support to Trust staff and external organizations in the North Lancashire and South Cumbria area. The role involves troubleshooting hardware, software, and network issues while contributing to critical projects aimed at enhancing patient care. Th ...

Mid Level Python Engineer — Free 16 Week Training (Birmingham)

CodeFirstGirls is offering a 16-week free training course for a Mid-Level Python Engineer position with the Counter Terrorist Police in Birmingham, UK. This course aims to help women upskill into mid-level tech roles while providing hands-on experience in design, development, and collaboration on software sol ...

Bazel at Scale Engineer (Junior Mid) Greenfield Role

Fractile is seeking an experienced engineer to develop the Bazel ecosystem from scratch in a hybrid role based in London or Bristol. You will have the unique opportunity to design rules, optimize performance, and define developer experiences, impacting the entire engineering team. With a focus on deep ...

On Site Infrastructure Engineer – IT Support & Systems

Stellar Entertainment Software Ltd in Guildford is seeking an Infrastructure Engineer to support IT operations. The role includes onboarding new starters, maintaining hardware records, and providing technical support across various platforms. Ideal candidates will have strong customer service skills and an en ...

Senior LLVM Compiler Engineer for AI & HPC

NVIDIA is looking for a CPU Compiler Engineer to enhance the upstream LLVM Toolchain for NVIDIA's CPUs. In this role, you will work closely with a talented engineering team to solve critical problems in compiler technology and improve the performance of AI and HPC software deployed globally. The ideal ...

Staff Security Engineer, Product Security — AI Risk

Harmonic Security, Inc in Greater London is seeking a Staff Security Engineer, Product Security to enable engineering teams to ship securely. The role involves creating tools and standards for secure development and closely collaborating with engineering to ensure products are secure and trusted. Ideal ...

Senior Embedded Systems Engineer 4 Day Week

Ultron Technologies, part of Handicare AB, is seeking a Senior Embedded Software Engineer to lead innovations for stairlift technology. This role offers the chance to mentor junior engineers and shape the future of mobility solutions. Your responsibilities will include designing electronic systems, dev ...

Senior Civil Engineer — Rail Structures & Leadership

Ameygroupi is looking for a Senior Civil Engineer in York to join our Structures Assessments account. This permanent role involves assessing rail structures and leading a team. You will enjoy a hybrid work model and have opportunities for career advancement and professional development. The ideal candi ...

Senior AI Full Stack Engineer – GenAI POCs & Production

83zero Limited is seeking a Senior Software Engineer specializing in AI & Full Stack development for a hybrid work model. The candidate will work on AI-powered solutions, collaborating with stakeholders and engineers to build production-ready applications. With a competitive salary between £60,000 and ...

Field Refrigeration Engineer Diagnostic & On Site Expert

Oyster Recruitment Ltd is seeking a skilled Refrigeration Engineer in Glasgow to provide high-quality support to customers. This role involves diagnosing complex issues and building strong relationships with clients. The position offers a base salary of up to £48,000 per annum with an OTE of £65,000+, ...

Lead Backend Engineer C#/.NET, Azure SaaS, Hybrid

Client Server Ltd. is seeking a Lead Backend Software Engineer (C# .Net Azure SaaS) to join their team in Reigate. This role offers a competitive salary of up to £100k plus bonuses, with a hybrid working model. Responsibilities include collaborating with a small team to develop a complex SaaS platform, providing ...

Quant Trading C# Engineer Newcastle, Bonus & 25 Days

Client Server Ltd. is seeking a C# Software Engineer / Developer in Newcastle upon Tyne to work on interesting systems within a global finance consultancy. The role offers a competitive salary up to £100k and focuses on integrating mathematical models to create scalable applications. The ideal candidat ...

SDR FPGA Engineer

FPGA / SDR EngineerNational Security | Gloucester or Romsey | SC Cleared We are supporting a growing National Security technology programme seeking FPGA / SDR Engineers to deliver advanced RF, SIGINT, and Software Defined Radio capability into highly secure customer environments. This is a h ...

Staff ML Engineer & Tech Lead — AI Strategy & MLOps

Capital One is seeking a Staff Software Engineer specialized in Machine Learning to drive the technical strategy across multiple teams in London. You will spearhead ML/AI initiatives and collaborate with various teams to enhance company capabilities through innovative AI solutions. We offer a hybrid wo ...

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 ...

Senior AI & DevSecOps Security Engineer Hybrid

iProov is seeking a Senior Security Engineer to enhance the security of our agentic AI products. This role will involve architecting security frameworks and maintaining our core security technologies. The ideal candidate will have a solid foundation in software engineering, experience securing cloud in ...

Industrial Electrical Design Engineer

A leading industrial equipment manufacturer in the United Kingdom is seeking an Electrical Design Engineer in Droitwich Spa. This office-based role is ideal for those who excel at converting engineering concepts into precise electrical drawings while supporting the creation of high-quality systems. Key responsib ...

Ruby Backend Engineer Payments & Checkout APIs

The Commerce Payment integrations team is hiring a Software Engineer. This role is crucial in developing and maintaining payment integrations that allow merchants to process payments securely and efficiently. You will work with Ruby on Rails, troubleshoot production issues, and mentor junior engineers. <p ...

Real Time Embedded V&V Engineer — Ada, DO 178C

MBDA S.A.S. is looking for a Verification and Validation (V&V) Test Engineer specializing in Real-Time Embedded Software. This hybrid role requires 4 days on-site in Bristol, ensuring robust testing through clearly defined requirements. The successful candidate will design and execute test plans and pr ...

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 ...

Lead QA Automation Engineer – Trading Platform

Kraken is looking for a passionate QA Engineer to lead the testing processes for its mission-critical trading platform. The successful candidate will create and implement test plans, collaborate across teams, and ensure high-quality software delivery. Ideal applicants have a strong proficiency in Python or Ru ...

AI Engineer: Agentic AI & Production Systems

Elsevier is seeking an AI Engineer located in London, focusing on building innovative AI solutions as part of a cross-functional squad. This role involves delivering production-standard AI-powered features, integrating advanced technologies into enterprise systems, and ensuring high code quality. The i ...

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 ...

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 ...

Golang Backend Engineer: High Load Infra & GPU Pipelines

Corsearch is seeking a Software Engineer to manage and evolve our core infrastructure that handles massive web scraping operations. In this role, you will be responsible for maintaining and optimizing systems that serve thousands of B2B enterprise clients. The ideal candidate has strong experience in e ...

Automation Engineer

Drebbelogic Limited is hiring a Automation Engineer based in Cambridge, Cambridgeshire, East Anglia, UK . This is a Full time opportunity (£55,000). Role This is a programming and commissioning role. The main responsibility will be focused on developing and ...

Senior ML Engineer: Edge Deployments & Technical Leadership

Rowden in Bristol is looking for a Senior Machine Learning Engineer who will lead AI development projects, focusing on deploying AI systems that make a real-world impact. You will collaborate across teams to deliver robust ML solutions and mentor colleagues for best practices. The ideal candidate will ...

Senior C++ Engineer: High Performance, Hybrid Cambridge

jobs.frontdoordefense.com - Jobboard is hiring a Senior C++ Software Engineer to join our R&D team in Cambridge. The role involves designing and developing high-performance, low-latency C++ systems to enhance our services. This hybrid position requires being in the office at least 2 days a week. The id ...

Precision Mechanical Design Engineer (3D CAD, FEA)

Sapien Engineering seeks a Mechanical Design Engineer to join a multidisciplinary engineering team in Sandwich. The role involves supporting new product designs, creating and maintaining 3D CAD models, and managing engineering projects, ensuring they are delivered on schedule. The ideal candidate posse ...

Senior Electrical Engineer Building Services

JAM Recruitment Ltd is looking for a Senior Electrical Engineer Building Services in Penwortham. This is a contract position offering £60.69 per hour inside IR35. You will assist in preparing design solutions for various projects while managing external consultants and delivering engineering support throughou ...

Manufacturing Engineer: Lean, CAD & CI Expert

Stannah Group is offering an exciting opportunity for a Manufacturing Engineer at their Curved Rail Manufacture Department in Cramlington. This full-time position focuses on enhancing productivity, quality, and safety across operations while participating in innovative projects. The successful candidat ...

Python Engineer — Cyber Security (Greenfield AI Defense)

Client Server is seeking a Python Software Engineer to innovate within AI cybersecurity. Join our R&D team to work on complex projects focusing on developing a new Greenfield product. You will collaborate with a diverse team and enjoy perks like free lunches and personal development budgets. Ideal cand ...

Kubernetes Platform Engineer for Hybrid Cloud & ML Infra

Hlx Life Sciences is seeking an Engineer within the Platform Team to build and scale infrastructure for machine learning and data science initiatives. This role involves collaborating with cross-functional teams to design and maintain high-performance systems across a hybrid cloud environment. The idea ...

Backend Engineer, Control Plane for AI Data Platform

DataDirect Networks, Inc. is hiring a Backend Software Engineer to join the Control Plane team for their DDN Infinia AI Data Platform. This hands-on technical role involves designing and developing scalable backend services and APIs for centralized management in hybrid environments. The successful cand ...

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 ...

BMS Project Engineer: Trend/Tridium Specialist

Switch Technical Recruitment is looking for a skilled Trend or Tridium Project Engineer to enhance their project delivery team. The ideal candidate will have extensive experience with Trend/Tridium systems, specifically in commercial and government environments. Key responsibilities include software de ...

Production AI Engineer — LLM Systems & Enterprise

Jobr.pro is seeking an AI Engineer to design and deploy production-grade AI systems powered by LLMs. You'll work directly with Fortune 500 companies to transform complex workflows and build real-world AI applications. This role is hands-on and involves defining system architectures and deploying reliab ...

Senior Full Stack AI Engineer (Hybrid)

A global financial information service provider in Manchester is seeking a Senior Software Engineer with expertise in AI and ML. The role involves designing and building cutting-edge solutions while working in a hybrid environment. Ideal candidates will have over 7 years of experience, strong Python skills, and ...

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    Fullstack Software Engineer Java React Aws Jobs in United Kingdom Job Search Guide, Trends and Insights