Principal AI Data Scientist – Build Next‑Gen LLM Systems

Company IconJava Script Works
Location IconLondon

Java Script Works is seeking a Principal Data Scientist to leverage AI technologies in legal tech solutions based in London. The ideal candidate will possess strong proficiency in Python and should have experience with AI systems.Additional...Read More>>.

Posted: June 6th, 2026
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Senior Fullstack Enginer (Python & React)

Company IconParser
Location IconLondon

Senior Fullstack Engineer (Python & React)2 weeks ago Be among the first 25 applicantsGet AI-powered advice on this job and more exclusive features.Direct message the job poster from ParserSenior Full Stack So...Read More>>.

Posted: June 6th, 2026
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Senior Python/Django Web Engineer

Company IconStars Arena
Location IconLondon

Stars Arena is seeking a Senior Software Engineer to work in London, United Kingdom. The ideal candidate will be tasked with the full web application development life cycle, creating scalable software solutions from conception to deployment. Candidat...Read More>>.

Posted: June 6th, 2026
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Business Development Lead in London - Bitstamp by Robinhood

Company IconBlockchain Works
Location IconLondon

RequirementsMandatory prior experience in sales or business development roles.Mandatory experience in financial industry, fintech, crypto, and Blockchain technology, with experience working globally.Characte...Read More>>.

Posted: June 6th, 2026
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AI Integration Engineer: Multi-Agent & Responsible AI

Company IconJava Script Works
Location IconLondon

Java Script Works is looking for an AI Integration Engineer based in London, England. The successful candidate will develop capabilities that integrate AI technologies with front-end tools like React and Next.js, focusing on effective autonomous r...Read More>>.

Posted: June 6th, 2026
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Lead Software Engineer - Python and React

Company IconJPMorganChase
Location IconLondon

Lead Software Engineer - Python and React Join to apply for the Lead Software Engineer - Python and React role at JPMorganChase. Step into a high-growth environment where your expertise in AI/ML and AWS will help s...Read More>>.

Posted: June 6th, 2026
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Cloud-Native Backend Engineer (Java/Kotlin)

Company IconJPMorganChase
Location IconLondon

A global finance leader is seeking a Back-End Engineer in Greater London to design cutting-edge cloud-native microservice architecture applications. Successful candidates will deliver robust technical solutions using Java and Kotlin while collaborati...Read More>>.

Posted: June 6th, 2026
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Senior Java Architect - Hybrid Role in London

Company IconEPAM Systems
Location IconLondon

A global digital engineering provider is seeking a seasoned Java Developer for a hybrid role in London. The successful candidate will work on complex applications, leading initiatives and mentoring peers. Responsibilities include designing Java and P...Read More>>.

Posted: June 6th, 2026
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Senior C# Backend Architect — Greenfield Payments Platform (London, 3 days in-office)

Company IconVirtueTech Recruitment Group
Location IconLondon

A global financial technology firm is seeking a Senior C# Software Engineer to architect a greenfield payments platform in Central London. This role requires expertise in C#, .Net Core, and SQL, focusing on creating robust and high-performance backen...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Generative Marketing, Equity (London)

Company IconJack and Jill AI
Location IconLondon

A leading AI marketing startup based in London seeks a Senior Product Engineer (Backend) to design scalable backend architectures and lead high-performance REST API development. The position offers exceptional autonomy in a PM-free environment and th...Read More>>.

Posted: June 6th, 2026
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Senior Development Manager – London – c£90,000 plus package plus bonus

Company IconPinnacle Recruitment Ltd
Location IconLondon

Senior Development Manager – LondonSalary: c£90,000 plus package plus bonusLocation: LondonRegion: LondonSenior Development Manager is urgently required for an established, high profile develope...Read More>>.

Posted: June 6th, 2026
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Senior Software Engineer, Authentication & Authorisation (Backend) London, UK

Company IconRipple
Location IconLondon

Senior Software Engineer, Authentication & Authorisation (Backend) London, UK At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our...Read More>>.

Posted: June 6th, 2026
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Senior Python Engineer for Real-Time Trading Tech (London)

Company IconRadley James
Location IconLondon

Radley James is seeking a Senior Python Engineer to join their London team. In this role, you'll develop Python applications that enhance trading strategies and data analysis, work with quants and traders, and lead code reviews. A minimum of 5 years...Read More>>.

Posted: June 6th, 2026
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Senior Typescript & AI Backend Developer

Company IconEmergn
Location IconLondon

Emergn is a technology and management consultancy with a mission to set our clients free. No dependency. No short-term fix. Just teaching them the real cure to their problems, so they can stay ahead of their competitors now and forever.A...Read More>>.

Posted: June 6th, 2026
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AI Engineer – Deploy & Integrate Production AI

Company IconJava Script Works
Location IconLondon

Java Script Works is looking for an AI Engineer in London, United Kingdom. This role emphasizes deploying and integrating AI models into production environments, utilizing Python or TypeScript.Ideal candidates are experienced software engin...Read More>>.

Posted: June 6th, 2026
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Senior Lead eSoftware Engineer - Equities Algo Trading - Java - VP in London - JPMorgan Chase & Co.

Company IconJPMorgan Chase & Co.
Location IconLondon

Senior Lead eSoftware Engineer – Equities Algo Trading – Java – VP Location: London, United Kingdom Posted: about 1 year ago Tech Stack Java Low latency messaging Trading systems...Read More>>.

Posted: June 6th, 2026
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Lead Backend Engineer (WordPress, PHP, Gutenberg) - Agency in London - Salt Search Ltd.

Company IconJava Script Works
Location IconLondon

Role:Develop enterprise-level WordPress plugins and/or themes primarily using PHP and Gutenberg blocks in React.js.Drive strategy in collaboration with experts across multiple disciplines, and lead overall technical vision and del...Read More>>.

Posted: June 6th, 2026
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CRO Frontend Engineer - React/Typescript in London - Fyxer AI

Company IconJava Script Works
Location IconLondon

CRO Frontend Engineer - React/Typescript London, United Kingdom Posted about 1 year ago Tech stack React TypeScript Frontend development Full-stack Qualifications...Read More>>.

Posted: June 6th, 2026
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Full-Stack Java & Spring Microservices Engineer

Company IconAdroit People Ltd
Location IconLondon

Desirable Criteria: • Agile, full stack development experience covering primarily either ReactJS/MEAN frameworks for UI and/or NodeJS framework for microservices development. • Dev-ops experience and development automation. • Unit and functi...Read More>>.

Posted: June 6th, 2026
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Full-Stack Azure Developer: Cloud Automation & Secure UI/API

Company IconJava Script Works
Location IconLondon

Fragment 1...and integrate Azure Logic Apps to enable seamless workflows and business process automation.Proficiency in Coding Languages JSON, JavaScript, PowerShell & C#Azure Security: Implement and adhere to best practices in...Read More>>.

Posted: June 6th, 2026
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Android Developer - Fintech (Kotlin/Java, MVVM)

Company IconQuant Capital
Location IconLondon

Quant Capital is searching for an Android Developer to join their fintech team in London. Candidates should have at least 3 years of Android development experience, be proficient in Kotlin and Java, and be familiar with MVP and MVVM design patterns....Read More>>.

Posted: June 6th, 2026
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SC Cleared Senior Java Backend Engineer (Hybrid)

Company IconPeregrine
Location IconLondon

Peregrine is seeking an experienced SC Cleared Senior Java Developer to contribute to the design, development, and enhancement of enterprise-scale applications. You will work within an Agile engineering team, delivering high-quality solutions thro...Read More>>.

Posted: June 6th, 2026
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Equities Front Office Tech Engineer - Java & FIX

Company IconCantor Fitzgerald
Location IconLondon

A leading financial services firm is seeking a developer to work on key projects for their Equities business in London. This role involves supporting front-office trading teams and local middle office functions, along with developing applications cri...Read More>>.

Posted: June 6th, 2026
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ML Full-Stack Engineer: Python Backend & AI Systems

Company IconJava Script Works
Location IconLondon

Machine Learning Software Engineer - Full Stack (LLM)London, United KingdomBachelor’s degree in Computer Science, Computer Engineering, or a related technical background.ExperienceBackend software engineering e...Read More>>.

Posted: June 6th, 2026
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QA Architect - Live Dealer Platform, CI/CD Expert

Company IconJava Script Works
Location IconLondon

Java Script Works is looking for a QA Architect to work in London, United Kingdom. The successful candidate will have extensive experience with CI/CD processes and various testing frameworks including Selenium, Playwright, and more. Strong program...Read More>>.

Posted: June 6th, 2026
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Senior Quant Trading Engineer - Java & Crypto

Company IconQuant Capital
Location IconLondon

Quant Capital is urgently hiring for a Senior Software Engineer specializing in Quant Trading based in London, United Kingdom. The role offers a competitive salary range of £150,000-200,000, plus a bonus of £50,000-80,000.The position foc...Read More>>.

Posted: June 6th, 2026
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Front-End Engineer: React/Angular/Vue Expert, London

Company IconJava Script Works
Location IconLondon

Java Script Works in London is looking for a Front End Developer to join their team. The ideal candidate will have proven experience in front-end development and proficiency in HTML, CSS, and JavaScript, including frameworks like Angular, React, a...Read More>>.

Posted: June 6th, 2026
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Java Developer - SC Cleared, Java v17+, AWS, Angular in London - Hays

Company IconJava Script Works
Location IconLondon

Key Skills Required: Java Developer with Active SC Clearance Java v17+ AWS Angular Additional Skills: Knowledge of Kubernetes and Docker Experience in Microservices...Read More>>.

Posted: June 6th, 2026
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SC Cleared Java Dev: Java 17+, AWS & Angular (Hybrid)

Company IconJava Script Works
Location IconLondon

Java Script Works is seeking a skilled Java Developer with Active SC Clearance, proficient in Java 17+, Spring/Spring Boot, Angular, and AWS. This role, based in London, offers a competitive rate of up to £420 per day (Inside IR35) and supports a...Read More>>.

Posted: June 6th, 2026
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Core Java Engineer — Low-Latency, Hybrid London

Company IconUnderstanding Recruitment
Location IconLondon

A leading investment management firm in London is seeking an experienced Core Java Software Engineer to build scalable software solutions for the financial sector. The successful candidate will have several years of experience in Core Java, especiall...Read More>>.

Posted: June 6th, 2026
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Senior Back End Developer- Java

Company IconFairPlay Sports Media
Location IconLondon

We’re a sports media network, focused on building and nurturing a portfolio of highly engaged and connected communities of sports fans and bettors to create value for our partners. We empower sports fans with real-time intelligence, pr...Read More>>.

Posted: June 6th, 2026
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Java Backend Engineer - Spring Boot & Microservices

Company IconOliver Bernard
Location IconLondon

A London-based trading company is seeking an experienced Java Engineer to join their technology team on an initial 6-month contract. The role focuses on backend development using Java and Spring Boot, building scalable services, and collaborating wit...Read More>>.

Posted: June 6th, 2026
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AI-Driven Full-Stack Engineer | RAG & LLM Specialist

Company IconJava Script Works
Location IconLondon

Proficiency in Full-Stack Development Proficiency in building modern, full-stack applications with back end development in Python, Node.js, or Java, and front end development with frameworks like React, Angular or Next.js. Experi...Read More>>.

Posted: June 6th, 2026
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Full Stack Software Engineer (Java+ React)About the Role: in London - S&P Global

Company IconJava Script Works
Location IconLondon

Experience and Skills Proven experience with modern web technologies, including: Java/J2EE Hibernate Microsoft Office Automation Python R REST/OData AWS Angula...Read More>>.

Posted: June 6th, 2026
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Software Engineer III - Backend Engineering - Java/Kotlin

Company IconAumni
Location IconLondon

Software Engineer III - Backend Engineering - Java/Kotlin LONDON, LONDON, United Kingdom Job Description Out of the successful launch of Chase in 2021, we’re a new team, with a new mission. We’re creating products t...Read More>>.

Posted: June 6th, 2026
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Backend Engineer - HFT & Crypto Systems (London On-Site)

Company IconTechChain Talent
Location IconLondon

A high-growth blockchain infrastructure company based in Greater London seeks a talented Backend Engineer to develop backend systems for trading and digital asset platforms. The role requires over 5 years of expertise in backend engineering, particul...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer — Architect Scalable Microservices

Company IconPublicisgroupe
Location IconLondon

A global marketing and communications company is seeking a Senior Backend Engineer to lead the design and development of backend systems. This role involves writing high-quality code, architecting distributed services, and collaborating closely with...Read More>>.

Posted: June 6th, 2026
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Backend Software Engineer - Medtech Innovation in London - SoCode Recruitment

Company IconSoCode Recruitment
Location IconLondon

Backend Software Engineer - Medtech Innovation London, United Kingdom As a Java Backend Software Engineer, you’ll help build and maintain the scalable backend infrastructure that powers our cutting‑edge medical techno...Read More>>.

Posted: June 6th, 2026
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QA Engineer - TypeScript Test Automation & API/React

Company IconJava Script Works
Location IconLondon

Java Script Works in Greater London is seeking a skilled Software Tester to design, execute, and document test cases. Candidates should have extensive experience in TypeScript coding for testing purposes and a strong understanding of software test...Read More>>.

Posted: June 6th, 2026
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QA Automation Engineer: Cypress & TypeScript

Company IconJava Script Works
Location IconLondon

ResponsibilitiesAssist in building and maintaining end-to-end test scripts using JavaScript/TypeScript with tools such as Cypress & Maestro. Support the execution and reporting of automated test suites. Learn and apply.Qualities...Read More>>.

Posted: June 6th, 2026
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Beauty Assistant Packaging Development Manager - London - £35-40k basic + benefits

Company IconHarrison Scott Associates
Location IconLondon

Beauty Assistant Packaging Development Manager We have a very exciting opportunity to join the packaging team of a leading cosmetics brand. They are looking for an ambitious, driven and passionate candidate to take on the role o...Read More>>.

Posted: June 6th, 2026
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Risk Analytics Tech Consultant | SQL, Java & Crystal

Company IconQuant Capital
Location IconLondon

Quant Capital is looking for a Technical Consultant for Risk Analytics in London, United Kingdom. The ideal candidate will have strong skills in Microsoft SQL Server, Java, and XML, alongside experience with PL/SQL and ideally Crystal Reports. This i...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Java/Spring, SC Clearance

Company IconColtech
Location IconLondon

Coltech is seeking an experienced Software Developer / Engineer to join a secure, large-scale financial services programme in Greater London. This role involves hands-on engineering within a collaborative team, enhancing critical backend services...Read More>>.

Posted: June 13th, 2026
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London Salesforce CPQ Tech Lead | Backend Architect

Company IconOSF Digital
Location IconLondon

OSF Digital is seeking an experienced Salesforce Technical Lead based in London, UK, to lead the development of CPQ cloud solutions. You will guide backend development teams and ensure the implementation of scalable Salesforce architectures. Respo...Read More>>.

Posted: June 13th, 2026
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Staff Backend Engineer (C++/Java/Go/Rust/Typescript) in London

Company IconEnergy Jobline ZR
Location IconLondon

Job Description Fastest Growing Start-up in the UK | Defence We are partnered with one of the UK's fastest-growing start-ups. They are a very technically focused group building cutting-edge decision-making technology. The c...Read More>>.

Posted: June 14th, 2026
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AI Solution Engineer – Technical Business Development Projects London View role

Company IconJeen.ai
Location IconLondon

Build with us at the edge of enterprise AI, where product, trust, and real operational About The Role Join as one of the first UK hires for an AI company expanding into Europe. Shape operations, culture, and technical strategy f...Read More>>.

Posted: June 14th, 2026
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Analyst/ Senior Analyst, Model Development Team - London (6 Month FTC)

Company IconFitch Ratings
Location IconLondon

As one of the world’s top three credit ratings agencies, Fitch Ratings plays a critical role in global capital markets by providing credit analysis, ratings, research, and commentary to financial market participants. For over 100 years, Fitch...Read More>>.

Posted: June 19th, 2026
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Business Intelligence Developer / Manchester or London

Company IconTransPerfect
Location IconManchester

OVERVIEWJoin the fast-growing TechOps BI team at TransPerfect as a Business Intelligence Developer, supporting the design, development, and maintenance of modern business intelligence architectures and solutions. You will w...Read More>>.

Posted: May 26th, 2026
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Retail Security Officer in London - MAN Commercial Protection

Company IconJava Script Works
Location IconLondon

Retail Security Officer London, United Kingdom Posted 9 months ago Tech stack React Security Main Responsibilities: Customer focused and comfortable to interact and deal with memb...Read More>>.

Posted: June 4th, 2026
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