313,261+ Fullstack Software Engineer Java React Aws Jobs in UK — Top Companies Hiring June 2026

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Software Engineer, HealthTech Platform London On site

A high-growth HealthTech startup in central London is seeking an experienced Software Engineer to join their founding engineering team. You'll design and implement systems that power healthcare data infrastructure and help shape the future of financial visibility in healthcare. The ideal candidate has over 3 yea ...

Senior Software Engineer Electronic Trading Shared Services

Senior Software Engineer - Electronic Trading Shared Services Location London Business Area Engineering and CTO Ref # Description & Requirements We are part of the engineering organization that powers Bloomberg’s global Electronic Trading platfo ...

Wireless Protocol Software Engineer – System API configuration

Overview We are open to hiring in our Fleet (UK) and Milan (Italy offices) for this role. Keysight is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing ...

Wireless Protocol Software Engineer – System API configuration

Overview We are open to hiring in our Fleet (UK) and Milan (Italy offices) for this role. Keysight is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing ...

Lead Software Engineer Python (Django) SC Cleared

Lead Software Engineer - Python (Django) - SC Cleared - Contract Rate : Up to £750 per day (Umbrella)Duration : 12 monthsLocation : 40% office based (London, Manchester, Birmingham, Cardiff, North East)IR35 : InsideSe ...

Software Engineer (Web Portal Developer) SC Cleared

Software Engineer (Web Portal Developer) - SC Cleared Position DescriptionAt CGI, you'll play a key role in delivering secure, high-impact digital solutions that support critical UK Defence operations. As a Software Engineer (Web Portal Developer), you will help develop, maintain and enhance custo ...

Senior Software Engineer – Property Based Testing (London)

Antithesis Operations LLC is seeking a developer based in London to help build ‘Hegel’, an innovative set of property-based testing libraries. The role requires experience with property-based testing and familiarity with Python and Rust. This in-office position values collaboration and high engineering standards ...

Principal AI Software Engineer, Senior Vice President

## Principal AI Software Engineer, Senior Vice PresidentApplyremote type: Hybridlocations: London United Kingdomtime type: Full timeposted on: Posted Todaytime left to apply: End Date: May 25, 2026 (13 days left to apply)job requisition id: 26960138Are you looking for a career move that will put you ...

Senior Software Engineer – Property Based Testing (London)

Open Source Pledge is seeking a developer for its London team to build Hegel, a new family of property-based testing libraries. You will work on open-source initiatives requiring proficiency in property-based testing and familiarity with languages like Python and Rust. The role emphasizes collaboration and high ...

Engineering AI Software Engineer Vice President London

Engineering AI Software Engineer - Vice President - LondonJob DescriptionWhat We DoAt Goldman Sachs, our Engineers don’t just make things – we make things possible. Change the world by connecting people and capital with ideas. Solve the most challenging and pre ...

Hybrid Lead Software Engineer – Distributed Systems Architect

Lead Software EngineerWinchester (Hybrid, 4 days per week in the office)£75,000 - £85,000 + Private Healthcare + Enhanced Pension Are you an experienced software engineer looking to take principal-level ownership of a complex, real-world distributed system used across security and ...

Lead Software Engineer — Remote Cloud & DevOps Mentor

Hackajob in Bristol is seeking an experienced software professional to coach and empower teams in delivering public sector software solutions. The role emphasizes outcome-based delivery, leveraging cloud automation and DevOps practices. Key skills include experience with multiple programming languages, cloud pla ...

Senior Software Engineer Backend in London Bits

Senior Software Engineer - Backend London, United Kingdom Posted about 1 year ago Tech Stack JavaScript GraphQL REST TypeScript Node.js Responsibilities Design and implement clean APIs using REST or ...

Climate Tech Software Engineer — Hybrid London (Impact)

A climate tech startup in London is seeking a Software Engineer to drive the transition to a cleaner energy system. You will develop software that optimizes energy usage and contribute to machine learning models. Ideal candidates are curious and passionate about tackling climate change, with a strong proficiency ...

Lead Software Engineer — AI, Data & Cloud Delivery

A technology firm in Greater London is seeking a Lead Software Engineer to guide technical project delivery and ensure the creation of high-quality, scalable solutions. You will lead software development projects, manage delivery teams, and build strong client relationships. The ideal candidate will have extensi ...

Staff Software Engineer (Reference Data, AI/ML)

Requirements B.S., or M.S. in Computer Science or similar technical field of study (or equivalent practical experience) Extensive software engineering experience Proven track record of owning and shipping complex, production-grade systems Proven experience ship ...

Graduate PyTorch Software Engineer – Flexible Work & Impact

A leading tech firm in AI is seeking a 2026 Graduate Software Engineer specializing in PyTorch in Bristol. This role will involve optimizing and maintaining software for machine learning accelerators, collaborating within an agile team, and participating in open-source efforts. Ideal candidates will have strong ...

Graduate Software Engineer — Build Real World Impact

A reputable engineering company based in Cheltenham is seeking a 2026 Graduate Software Engineer. This role involves software development, bug fixing, and team collaboration. You will benefit from extensive training and mentorship while gaining hands-on experience. Ideal candidates will have a background in comp ...

Software Engineer NI LabVIEW (12 month contract)

Software Engineer - NI LabVIEW (12 month contract) We are looking for experienced Software Engineers to join our well-established Test Engineering community at our Edinburgh based site. You will help us continue our industry leading contribution to projects in our Radar teams. ...

Global AI Software Engineer — Growth, Mentorship, Impact

A leading AI consultancy in the United Kingdom is looking for a Software Engineer to join their dynamic team. This role involves developing cutting-edge products, mentoring client teams and collaborating with a global network to drive meaningful change. Candidates should possess a degree and 2–5+ years of full-s ...

AI/ML Software Engineer — PhD (Early Career)

A leading technology company in the UK is seeking a Software Engineer for AI/ML to improve machine learning model performance. The ideal candidate will hold a PhD and possess skills in artificial intelligence, data mining, and software design. Responsibilities include scaling data optimization techniques and col ...

Senior Lead Software Engineer Front End Developer

Be an integral part of a team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products. As a Senior Lead Software Engineer at JPMorgan Chase within the Corporate Technology Market Risk team, you will lead the rapid expansion of a strategic visualization an ...

Backend Software Engineer C++ Rust Low Latency

Backend Software Engineer C++ Rust Low Latency Trading Opportunity to join a hugely profitable High Frequency Trading firm specializing in crypto markets. You will design and develop high throughput backend services for microsecond real‑time risk, pricing, trading engines, and market‑making syste ...

Lead Software Engineer: Flexible Cloud Solutions Leader

A leading global innovation consultancy seeks an experienced Lead Software Engineer to join their growing technology practice in Belfast. The ideal candidate will lead the technical delivery of complex solutions, mentor engineering teams, and work directly with clients to craft scalable technical solutions. With ...

Senior Systems Software Engineer — AI Accelerator (London)

A cutting-edge AI company based in London is seeking a Senior Systems Software Engineer to develop software for innovative AI accelerator hardware. The ideal candidate will have solid experience in data centre systems software development and excellent C/C++ skills. Responsibilities include creating device drive ...

Senior Software Engineer – Property Based Testing (London)

Antithesis Operations LLC is seeking a developer based in London to help build ‘Hegel’, an innovative set of property-based testing libraries. The role requires experience with property-based testing and familiarity with Python and Rust. This in-office position values collaboration and high engineering standards ...

Senior Software Engineer – Property Based Testing (London)

Open Source Pledge is seeking a developer for its London team to build Hegel, a new family of property-based testing libraries. You will work on open-source initiatives requiring proficiency in property-based testing and familiarity with languages like Python and Rust. The role emphasizes collaboration and high ...

Senior Software Engineer — Cloud Microservices Tech Lead

A leading energy consultancy based in Oxford is looking for a Senior Software Engineer to join their innovative team. In this role, you will be responsible for turning product ideas into reality, focusing on building cloud-based software solutions that drive decisions in the global energy market. The ideal candi ...

Senior Software Engineer Remote/Hybrid, Lead & Mentor

A leading recruitment agency in Bristol is seeking a Senior Software Engineer to design and develop high-quality software solutions for innovative projects. The successful candidate will have strong problem-solving skills, expertise in software security, and knowledge of cloud technologies. Join a flexible worki ...

Senior Lead Software Engineering AI/ML Engineer

Introduction Join us to shape the future of AI/ML data platforms, where your expertise will help create resilient and market‑leading solutions. You will have the opportunity to collaborate with innovators across our global network, driving strategic change and mentoring others. We value your skill ...

Senior Software Engineer: Neurosymbolic AI & Scalable API

Jack and Jill AI is looking for a Senior Software Engineer to join their team in Greater London. This role involves designing a public API and building systems that integrate probabilistic machine learning with deterministic computing. You will play a critical role in developing symbolic reasoning engines and sc ...

Senior Lead Software Engineering AI/ML Engineer

Job Description Join us to shape the future of AI/ML data platforms, where your expertise will help create resilient and market‑leading solutions. You will have the opportunity to collaborate with innovators across our global network, driving strategic change and mentoring others. We value your s ...

Senior Software Engineer Age of Empires (Remote)

Forgotten Empires is a full‑service game developer focused on Windows PC and Console games. While headquartered in the U.S., our team consists of 100+ passionate individuals from around the globe, each of whom brings a unique skill set and perspective to the table. Since 2022, we are part of Keywords Studi ...

Senior Software Engineer Remote Supplier Data Platform

A leading product experience company in Greater London is seeking an experienced full-stack engineer to drive product development and enhance supplier relationships. The role focuses on building solutions using technologies like Python and TypeScript, emphasizing user needs and collaboration with customers. The ...

Senior Software Engineer, Endpoint DLP – Go & Kernel

A leading cybersecurity firm located in London is seeking a Senior Software Engineer for the FortiDLP project. This role involves enhancing the endpoint agent capabilities while maintaining high code quality standards. Candidates should have robust programming skills, experience in systems analytics, and a colla ...

Senior Software Engineer, Unified Platform (Reference Data)

DRW is a technology-driven, diversified principal trading firm. We trade our own capital at our own risk, across a broad range of asset classes, instruments and strategies, in financial markets around the world. As the markets have evolved over the past 30 years, so has DRW – maximizing opportuniti ...

Senior Software Engineer, Client Solutions Cloud & Events

A prominent financial technology firm in Greater London is looking for a Senior Software Engineer to design and build resilient, event-driven systems. You'll engage across the engineering lifecycle while using modern AI-assisted tools. Candidates should have over 5 years of experience in software development and ...

Senior Software Engineer (L5) – Hybrid, Scale & Impact

Senior Software Engineer L5 Manchester (Hybrid, up to 4 days WFH) | £55k-75k Street Group is one of the fastest-growing PropTech companies in the UK. We want to be the leading creator of delightful experiences for everybody involved in buying, selling, renting and letting property, regard ...

Senior Software Engineer — Cloud Microservices for Energy

A leading company in the energy sector is seeking a Software Engineer to join their innovative team in Oxford. The role involves developing cloud-based software solutions that impact global energy markets. You will work with cutting-edge technologies and contribute to a microservices architecture. The ideal cand ...

Senior Software Engineer DV Cleared | Hybrid & Cloud

A leading defense tech firm in Cheltenham is seeking a Senior Software Engineer with enhanced DV Clearance for a hybrid role. You will tackle national security challenges using cutting-edge technology, contributing to hands-on development and code reviews. Strong expertise in cloud architecture, DevOps tools, an ...

Senior Software Engineer Real Time Data Pipelines

A premier betting solutions provider is seeking a Senior Software Engineer to join their Data Acquisition team in Harrow, UK. This role involves developing software for real-time sports data products and collaborating with engineers and data specialists. Candidates should have strong programming skills, experien ...

Senior Flight Software Engineer — Embedded Rust/C++

A leading space technology company is seeking a Flight Software Engineer to lead the design and implementation of software for satellite missions. Responsibilities include defining software architectures, overseeing testing, and mentoring junior engineers. The ideal candidate has deep expertise in Rust and profi ...

Senior Software Engineer Agent & Datapath (eBPF) Isovalent

Isovalent, now part of Cisco, is the company founded by the creators of Cilium and eBPF. Cisco Isovalent builds open-source software and enterprise solutions solving networking, security, and observability needs for modern cloud native infrastructure. The flagship technology, Cilium, is the choice of numer ...

Senior Software Engineer GPU Capture and Replay

Why PlayStation? PlayStation isn’t just the Best Place to Play — it’s also the Best Place to Work. Today, we’re recognized as a global leader in entertainment producing The PlayStation family of products and services including PlayStation®5, PlayStation®4, PlayStation®VR, PlayStation®Plus, ...

Senior Software Engineer ETRM & .NET Core Specialist

A leading energy trading company in London seeks a Software Engineer to develop and optimize ETRM systems. Candidates should have a strong background in C# and .NET Core, with at least 8 years of experience. Responsibilities include proposing software designs, implementing solutions, and developing database fram ...

Lead Software Engineer Design Engineering (Design System)

Join JPMorganChase's business accelerator team, a hub of innovation and customer-centric product development. We're a new B2B organisation, part of a venture focused on creating engaging digital experiences. We're seeking a design engineer with a deep understanding of system thinking and advanced front-end ...

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