Java Software Engineer Core Java Jobs in UK

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Senior QA Engineer Funding & Exchange Platform

B2C2 Ltd. in London is seeking a Senior Quality Assurance Engineer to implement robust end-to-end integration tests for their trading and risk components. The role requires extensive experience in technical testing within a financial services environment, proficiency in Java, and a proven track record with excha ...

Principal Platform Engineer Cloud & Automation

A leading digital retailer is seeking a Principal Platform Engineer to design and maintain cloud infrastructures. This role requires strong troubleshooting skills and expertise in various programming languages, including Java and scripting. You will work closely with engineering teams to enhance platform reliabi ...

Cloud SRE Global Observability Lead (Remote UK)

A leading technology company is seeking a Staff Site Reliability Engineer - Cloud to architect the Observability Centre of Excellence, ensuring reliability and uptime of global platforms. This role involves implementing OpenTelemetry, developing automation scripts, and optimizing platform performance while colla ...

Senior Lead Engineer, Post Trade Blockchain & Cloud

A global financial markets provider seeks a Senior Lead Engineer to play a critical role in developing cloud-based market infrastructure. This position emphasizes engineering excellence and requires strong skills in advanced Java, microservices, and agile methodologies. Candidates should be familiar with cloud p ...

Senior Product Engineer – Full Stack, AI Tooling

Allstate Northern Ireland Limited is looking for a Full Stack Engineer based in Belfast. The candidate must have at least 3 years of experience with Java 17+, Spring Boot 3+, and React 18+. Responsibilities include participating in iteration planning and ensuring understanding of technical requirements. Applican ...

Senior Backend Engineer Fintech Scale Up (Stock Options)

ARQ, a rapidly growing fintech in Greater London, is seeking a Backend Engineer to design and develop scalable backend systems. You'll work on greenfield projects, build REST APIs, and create microservices, all while using Java, Spring Boot, and Postgres. We're looking for candidates with over 5 years of experie ...

Remote Cloud Engineer — AWS, Terraform & Security

Java Script Works is seeking a talented Cloud Engineer for a full-time remote position. The successful candidate will have experience with cloud technologies including AWS, scripting languages such as Python and Node.js, and infrastructure as code tools like Terraform. Although the pay is competitive, no specifi ...

Senior Product Engineer — AWS, TypeScript & Node.js

Java Script Works is seeking a Senior Product Engineer in London, United Kingdom, to work in an AWS cloud-native environment. In this full-time role, you will leverage your expertise in NodeJS, Typescript, and Prisma, contributing to the team’s future direction. With a salary range of £100K - 120K, thi ...

Senior QA Engineer Non Functional & Automation Lead

TXP is seeking a Senior QA Engineer (Non-Functional Testing) to join HMRC's delivery team in Newcastle. This role involves driving quality across the SDLC, implementing automated testing strategies, and working closely with Agile teams. The ideal candidate will have strong experience in non-functional ...

Hybrid HCL Commerce Engineer Scale Driven Backend

DCV Technologies is looking for a Specialised Engineer - HCS Commerce to enhance their digital commerce platform in London. The role includes designing and maintaining HCL Commerce components while ensuring scalability and performance standards. Candidates will need hands-on experience with Java and a ...

Senior Backend Engineer, Messaging & Notifications (AI‑First)

Miro is looking for a Senior Backend Engineer to join the Messaging team in Greater London. The ideal candidate will design and implement scalable backend services for notifications and must have over 6 years of backend experience, particularly with Java 17 and distributed systems. Miro offers a global benefits ...

Senior Data Backend Engineer, Search Quality

Yelp is seeking a data-oriented backend engineer in Manchester, UK, to enhance our Search systems. You will collaborate with multiple engineering teams, focusing on building and supporting scalable backend platforms. Qualified candidates should have experience in object-oriented programming languages such as Pyt ...

Full Stack Engineer Build Transformative APIs & UIs

Java Script Works is looking for a Full Stack Engineer in Greater London, UK, to join their ambitious early-stage startup. The ideal candidate should have extensive experience in modern Python for web applications and be familiar with React, Redux, TypeScript, and Golang. This full-time position offers a competi ...

Fullstack Product Engineer — TypeScript, Serverless & React

Java Script Works is looking for a product-focused engineer in Greater London, UK. The successful candidate will be involved in product work, utilizing expert-level understanding of Typescript and serverless architecture. Key responsibilities include developing a React frontend, implementing Firebase Auth, and i ...

AI Powered Presales Engineer – Custom Demos & Analytics

Personetics is seeking a full-time Presales Engineer in Greater London, England. The ideal candidate will have strong skills in AI, Machine Learning, and predictive analytics, alongside conversational knowledge of Linux, Java, and SQL. Responsibilities include managing RFIs and RFPs, tailoring demos to prospects ...

DevOps Engineer Automation, Docker, Kubernetes & WebLogic

Quant Capital is seeking a DevOps Engineer for a full-time role in Reading, UK. The position offers a competitive salary of up to £70K and requires strong skills in Automation, including Puppet, Docker, and Kubernetes. Candidates should have experience with Java application servers and databases like Oracle and ...

Principal Platform Engineer Cloud & Automation

A leading digital retailer is seeking a Principal Platform Engineer to design and maintain cloud infrastructures. This role requires strong troubleshooting skills and expertise in various programming languages, including Java and scripting. You will work closely with engineering teams to enhance platform reliabi ...

Principal Platform Engineer: AI, Reliability & Leadership (Hybrid/Remote)

LexisNexis Risk Solutions is looking for a Principal Engineer to guide technical direction across teams, focusing on system modernization and AI applications. This full-time role involves collaborating with various teams to enhance reliability and scalability of platforms. Candidates should have extensive backen ...

Site Reliability Engineer, Region Services & CI/CD

Amazon is seeking a Site Reliability Engineer for its UK team to pioneer automated Windows service deployments. The role emphasizes building Ansible-based Infrastructure as Code, enhancing operational excellence, and solving complex technical challenges. Candidates should have deep knowledge in systems engineeri ...

Cloud SRE Global Observability Lead (Remote UK)

A leading technology company is seeking a Staff Site Reliability Engineer - Cloud to architect the Observability Centre of Excellence, ensuring reliability and uptime of global platforms. This role involves implementing OpenTelemetry, developing automation scripts, and optimizing platform performance while colla ...

Senior Product Engineer — AWS, TypeScript & Node.js

Java Script Works is seeking a Senior Product Engineer in London, United Kingdom, to work in an AWS cloud-native environment. In this full-time role, you will leverage your expertise in NodeJS, Typescript, and Prisma, contributing to the team’s future direction.With a salary range of £100K - 120K, this ...

Senior Product Engineer – Full Stack, AI Tooling

Allstate Northern Ireland Limited is looking for a Full Stack Engineer based in Belfast. The candidate must have at least 3 years of experience with Java 17+, Spring Boot 3+, and React 18+. Responsibilities include participating in iteration planning and ensuring understanding of technical requirements. Applican ...

Senior Site Reliability Engineer: Cloud & Distributed Systems

A technology firm is seeking a Principle Site Reliability Engineer to build and maintain large-scale distributed systems. Candidates should have strong proficiency in programming languages like Golang, Java, or Python, and extensive experience with cloud infrastructure such as AWS, Azure, or GCP. The role is con ...

Senior Front End Engineer — React + Next.js Expert

Java Script Works is seeking a Senior Product Engineer (Front-End) to join their team in London, United Kingdom. This role involves building and shipping responsive, performant UIs using modern technologies like React and TypeScript, while collaborating with backend engineers for API definitions.The co ...

Misys Technical Consultant with Java Birmingham (IT) in Birmingham Nexus Jobs Limited

Misys Technical Consultant with Java - Birmingham Birmingham, United Kingdom Posted 9 months ago Tech stack Trading Java Job Description We are looking to recruit a Misys Technical Consultant with at least 2 years experience of working wit ...

Senior Full Stack Engineer: AI Driven Platform

An innovative online learning platform in the UK seeks a Full-Stack Engineer to design and build features across backend services and a React frontend. You will leverage technologies like Java and Node.js while promoting a culture of diverse perspectives. Ideal candidates will have a strong engineering backgroun ...

Senior Full Stack Engineer: AI, Architecture & Delivery

hackajob is looking for a Senior Full Stack Engineer in the United Kingdom to design, build, and deploy high-quality systems. This role involves translating client requirements into technical solutions and supporting architectural decisions. The ideal candidate should have a proven track record in full stack dev ...

Lead Engineer, Trading Platform Engineering

Bullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: Bullish Exchange – a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order boo ...

Integration Engineer (EMEA)

JD: Integration Engineer (EMEA) About k-ID k-ID is the global leader in privacy-first compliance and age verification infrastructure. Recognized as one of TIME’s Best Inventions of 2025, named a Tech Pioneer by the World Economic Forum and a winner of Fast Company’s Next ...

Senior Engineering Lead, Index Distribution

Senior Engineering Lead, Index Distribution LSEG City Of London, England, United Kingdom Job Summary FTSE Russell is looking for a senior software engineer to lead the development of distribution capabilities for our index products. The platform delivers analytics, product ...

Senior Software Engineer

Senior Java Engineer / SRE London (Hybrid) The company A well-established global fintech business operating large-scale trading platforms across multiple asset classes including equities, leveraged products, futures, options, and digital assets. Th ...

Software Development Engineer (12 Month FTC)

At Booker, part of the Tesco Group, we’re proud to serve independent retailers, caterers, and businesses across the UK. Our technology powers millions of transactions and keeps shelves stocked across thousands of outlets. We’re looking for a Software Development Engineer to join our EPOS team and h ...

Cloud Software Engineer AI & Agile

LexisNexis Risk Solutions in Greater London is seeking a Software Developer to work within an Agile team, developing and maintaining applications in a cloud-hosted environment. The ideal candidate will possess strong skills in Java and JavaScript/TypeScript, and have experience with SQL and version control syste ...

Python Based Photonic Layout Engineer in Oxford Salience Labs

Requirements Strong programming skills in Python, C, Java, or similar languages. Bachelor’s degree or equivalent in physics, photonics, electrical engineering, or optical engineering. Responsibilities 1+ years of experience in developing software for large-scal ...

Commodities Python Engineer in London Verition Group LLC

Good-to-have Qualifications: Experience with other object-oriented programming languages such as Java, C#, or C++. Experience with quantitative development in the financial industry and familiarity with pricing models, risk models, analytics, and business objectives. Required Qualific ...

Mobile Voice Engineer (Android) – VoIP & Multi Network

Mobilus Labs Limited in Greater London is seeking a Mobile Software Developer to join their innovative team focused on voice communication technology. The role involves designing and developing a mobile app, implementing cutting-edge features, and collaborating within an agile environment. The ideal ca ...

Associate Software Engineer

At Anaplan, we are a team of innovators focused on optimizing business decision-making through our leading AI-infused scenario planning and analysis platform so our customers can outpace their competition and the market. What unites Anaplanners across teams and geographies is our collective commitm ...

Lead Full Stack Tech Lead (SC Cleared)

Job Title: Lead Full Stack Tech Lead (SC Cleared) Location: Remote, UK Based Duration: 12-month contract (With scope to extend) Clearance: Active Security Clearance is required We are looking for an experienced Full Stack Tech Lead to provide ...

Senior Software Engineer Real Time Finance, Cloud Native

A leading investment firm in the United Kingdom is seeking a Mid-Senior Level Engineer to design and build distributed cloud-native services integral to investment workflows. This role offers competitive compensation and an environment that fosters clean design and scalability. Ideal candidates will have over 8 ...

Staff Software Engineer

Staff Machine Learning Engineer – AI/ML Information Extraction Remote (Or Hybrid If London based – 2 days)My client is a fast-growing, product-led technology business operating within a specialist professional services sector. They provide a SaaS platform used by organisations globally to improv ...

Software Engineer Apollo Platform

Join to apply for the Software Engineer - Apollo Platform role at Palantir Technologies . Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesav ...

Blockchain Developer

We are a Global Recruitment specialist that provides support to the clients across EMEA, APAC, US and Canada. We have an excellent job opportunity for you. Role Title: Blockchain Engineer (Senior SmartContract developer) Location: London- 2days onsite </stro ...

Senior JavaScript Engineer | DataGrid & Charting Libraries | London

Frontend Systems Engineer – DataGrid & Visualisation Libraries | London (Hybrid) £150,000 – £200,000 + package Most engineers build applications. This team builds the components those applications rely on. I’m hiring for a develop ...

Backend Engineer, Java, Kotlin, AWS | Fintech, Payments Platform (B2B) | Leeds, Hybrid (2 days [...]

Backend Engineer, Java, Kotlin, AWS | Fintech, Payments Platform (B2B) | Leeds, Hybrid (2 days per week) | Salary Up to £65,000+ Bonus & Benefits Direct message the job poster from Owen Thomas | Pending B Corp™ The Company We are working with an international Fintech Start‑Up in ...

Python Developer

Job Title: Python Engineer (DevOps experience) Duration: long-term contract Location: UK Based Remote (Travel to Birmingham / Sheffield when needed) We are seeking a Python Engineer to build and enhance secure, scalable Jenkins Shared Libraries supportin ...

Python Developer

Job Title: Python Engineer (DevOps experience) Duration: long-term contract Location: UK Based Remote (Travel to Birmingham / Sheffield when needed) We are seeking a Python Engineer to build and enhance secure, scalable Jenkins Shared Libraries supportin ...

Security Engineer in Birmingham

Overview Security Engineer with a passion for SecOps, Development and Infrastructure as Code (IAC) is needed for an amazing Fintech. Key Skills IaaS technologies, AWS or GCP Worked in a DevOps, SRE, Security Engineering and/or software development role <l ...

Infrastructure Engineer Hedge Fund £250K+ package

Infrastructure Engineer - Hedge Fund - £250K+ package Our client is one of the world’s leading hedge funds – A company at the cutting edge of finance, technology and quantitative analytics. In London they’re growing their Infrastructure and HPC team and are looking for an experienced, strong e ...

Python Developer

Job Title: Python Engineer (DevOps experience) Duration: long-term contract Location: UK Based Remote (Travel to Birmingham / Sheffield when needed) We are seeking a Python Engineer to build and enhance secure, scalable Jenk ...

Senior Software Engineer

Senior Software Engineer £56000 - £70000 p/a + BUPA, bonus and full benefits Gloucester, Gloucestershire 4 Day Work Week Option A high number of candidates may make applications for this position, so mak ...

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    Java Software Engineer Core Java Jobs in United Kingdom Job Search Guide, Trends and Insights