Senior Java/React Full-Stack Developer | Hybrid/Contract

Company IconAppvia
Location IconLondon

A leading cloud and engineering consultancy is seeking a Senior Java/React Full Stack Developer for a contract role. The candidate will work within a Solutions Engineering team, focusing on modernising complex software systems and improving delivery...Read More>>.

Posted: June 6th, 2026
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Lead Software Engineer – AI/ML, Python & React on AWS

Company IconJPMorganChase
Location IconLondon

A global financial services firm in Greater London is seeking a Lead Software Engineer specializing in Python and React. The role involves working within a high-growth team to improve loan management platforms with AI/ML functionalities. Candidates s...Read More>>.

Posted: June 6th, 2026
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Lead Backend Engineer – Data Platforms

Company IconBullish
Location IconLondon

A global digital asset platform is seeking a Lead Software Engineer to drive the technical roadmap and operational excellence of critical subsystems. The ideal candidate should have over 6 years of backend development experience, with mastery in the...Read More>>.

Posted: June 6th, 2026
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Senior Backend Architect - Data Engineering

Company IconCoinDesk
Location IconLondon

CoinDesk is looking for a Lead Software Engineer to join their Data Engineering team in Greater London. This role involves leading high-impact projects, enhancing system architectures, and ensuring the successful delivery of mission-critical systems....Read More>>.

Posted: June 6th, 2026
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Senior Product Engineer (Backend)

Company IconCavendish Professionals
Location IconLondon

I'm partnering with a London-based AI startup that recently secured Series B funding and is developing cutting‑edge AI‑powered products. They’re looking for a Senior or Staff Backend Product Engineer who enjoys solvin...Read More>>.

Posted: June 6th, 2026
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Senior Product Engineer (Backend)

Company IconBurns Sheehan
Location IconLondon

Senior Product Engineer (Backend) – AI‑Native SaaS Platform | Tripled ARR in 12 months Remote‑first (UK) with hybrid London office option £130,000 + equity Technologies: Typescript/Node, React, GCP/AWS We’...Read More>>.

Posted: June 6th, 2026
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Backend Engineer — Guest & Host Platform (Equity)

Company IconAirbnb
Location IconLondon

Airbnb is seeking a Backend Software Engineer to join their team in Greater London. The role involves delivering personalized features that enhance the hosting experience and building reliable, scalable systems. Candidates should have 4+ years of exp...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer

Company IconPublicis Groupe UK
Location IconLondon

Company Description Company DescriptionPublicis Media harnesses the power of modern media through leading agency brands Dysrupt, Infinite Roar, Publicis Collective, Publicis Health Media, Spark Foundry, Starcom and Zenith, as we...Read More>>.

Posted: June 6th, 2026
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Payments Platform Backend Engineer

Company IconTrades Workforce Solutions
Location IconLondon

A prominent financial services firm in Greater London is seeking a Backend Software Engineer to build payment processing infrastructure. You'll develop backend services that support high-volume, secure transactions, ensuring reliability and complianc...Read More>>.

Posted: June 6th, 2026
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MarTech Backend Engineer — Privacy-First Stack

Company IconProton
Location IconLondon

A leading technology company in Greater London is seeking a Backend Engineer to enhance their marketing technology stack. The successful candidate will design and implement key components, integrate solutions across teams, and improve user conversion...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer

Company IconRise Technical Recruitment
Location IconLondon

Senior Backend Engineer – ScalaLondon – Hybrid (at least once a week in Central London) Up to £85,000 DOE + Regular Pay Reviews + Healthcare + Life Insurance + Benefits. Excellent opportunity for a Senior Backend...Read More>>.

Posted: June 6th, 2026
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Backend Engineer - Real-Time Fintech Exchange

Company IconQFEX
Location IconLondon

A revolutionary finance technology company in the UK is seeking an experienced engineer to design low-latency, fault-tolerant services for their perpetual futures exchange. Candidates should have a STEM degree and at least 3 years of experience in re...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer

Company IconOctopus Energy Group
Location IconLondon

Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier.By combining world-class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we made it...Read More>>.

Posted: June 6th, 2026
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Low-Latency eTrading Python Engineer

Company IconTalan Group
Location IconLondon

A leading firm in financial services seeks an eTrading Production Support Engineer in London. This role emphasizes strong Python scripting and solid Linux knowledge within a fast-paced application support team. Candidates should have broad IT knowled...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - FinTech

Company IconOpen Select
Location IconLondon

Senior Backend Engineer Location: London (Hybrid) Salary: Up to £130k + competitive equity Industry: Fintech, SaaS, B2B What You’ll Drive Join a fast-growing fintech scaleup revolutionising billing, CPQ, and revenue re...Read More>>.

Posted: June 6th, 2026
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Backend Engineer

Company IconMyJunior AI
Location IconLondon

About JuniorWe’re building cutting-edge LLM-powered tools to supercharge the investment research process for private market investors. Our clients include several of the world’s top 10 private equity and consulting firms, and are...Read More>>.

Posted: June 6th, 2026
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Python Developer

Company IconSearch 5.0
Location IconLondon

Direct message the job poster from Search 5.0Co-Founder @ Search 5.0 ️ Driving Success with Elite Cloud and Contract TalentPYTHON CONTRACTOR | LONDON | HYBRIDAre you a Python developer with a strong backgr...Read More>>.

Posted: June 6th, 2026
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Senior Python Developer

Company IconAd Astra Consultants
Location IconLondon

We are hiring for one of the leading Global, insights-driven analytics organization We are looking for a Python Developer with strong experience in trading and risk management systems within investment banking. The role involves building...Read More>>.

Posted: June 6th, 2026
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Full-Stack Python Engineer, Enterprise Platform

Company IconMarex
Location IconLondon

Marex is looking for a Full-Stack Python Developer to join the Enterprise team on the Engine Room initiative. This role involves designing, developing, and maintaining high-quality Python solutions while contributing to shared enterprise capabilities...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Team Decide

Company IconTaktile
Location IconLondon

About The Role Banks and fintechs use Taktile to automate critical decisions - like credit and risk - in real time. We're a startup in the automated decisioning space - and the backend is where the hard problems live. We're look...Read More>>.

Posted: June 6th, 2026
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Payments Backend Engineer: Scale Global Subscriptions

Company IconProton
Location IconLondon

A leading technology company in Greater London is seeking an experienced back-end developer for the Payments Team. You will build scalable software solutions to enhance user experience across Proton's products. Ideal candidates will have a strong bac...Read More>>.

Posted: June 6th, 2026
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(Senior) Backend Engineer, Platform

Company IconWheely Ltd.
Location IconLondon

Wheely is redefining premium transportation across major cities in Europe, the US, and the Middle East. We blend cutting-edge technology with the craft of five-star chauffeuring to deliver an experience trusted by more than 100,000 active rider...Read More>>.

Posted: June 6th, 2026
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Senior PHP Developer - REST API

Company IconEventogy
Location IconLondon

We are a highly successful UK based Events Management SaaS company looking for an ambitious PHP Technology/Software Architect to help oversee the next phase of development of our suite of products. As an accomplished PHP Senior Engineer you wil...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - AdTech

Company IconDepop Limited
Location IconLondon

We are looking for a Senior Backend Engineer to join our AdTech team at Depop, helping to build and scale the systems that power advertising and monetisation across the platform.ResponsibilitiesPartner with Product, Data Sc...Read More>>.

Posted: June 6th, 2026
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Rust Kernel Engineer – Scalable Backend & Observability

Company Iconhyperexponential
Location IconLondon

hyperexponential is looking for a Software Engineer for the Kernel Team to design and deliver features for their AI-powered platform. The role involves enhancing a modular architecture and building automated tests for complex execution scenarios. Can...Read More>>.

Posted: June 6th, 2026
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Free 16-Week Python Engineer Accelerator

Company IconCodeFirstGirls
Location IconLondon

CodeFirstGirls is offering a Mid-Level Python Engineer position in London through the Mid-Level Accelerator programme. This program is ideal for candidates with 1.5+ years of experience in Software or Data Engineering.Participants will bene...Read More>>.

Posted: June 6th, 2026
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Software & DevOps Engineer | Python, C/C++, Linux

Company IconJava Script Works
Location IconSouthampton

Java Script Works is seeking a Software & DevOps Engineer based in Southampton, United Kingdom. This full-time role demands experience in software development using C/C++, Java, Python, and JavaScript/HTML. The successful candidate will promote knowl...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer (R&D)

Company IconThreatAware
Location IconLondon

About the roleWe're hiring a Senior Backend Engineer to join our R&D team and help build the next generation of the platform. You'll work directly with the CTO on the systems that let security teams compose AI-powered workflows, automa...Read More>>.

Posted: June 6th, 2026
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C# Backend Developer - Healthcare Impact

Company IconFranklin Bates
Location IconLondon

A leading technology company in the United Kingdom is seeking a backend developer to design and maintain services using C# and cloud technologies. This role involves contributing to the product lifecycle, collaborating with diverse teams, and ensurin...Read More>>.

Posted: June 6th, 2026
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Python Full Stack Desk Developer

Company IconRJC Group
Location IconLondon

Full Stack Desk Developer – London - 140kRJC is working a Full Stack Desk developer role for a global energy trading company based in London. Working as part of the Cross Commodity Trading Desk, they are looking for a developer...Read More>>.

Posted: June 6th, 2026
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Climate Tech Python Engineer - Hybrid, Impact

Company IconPropel
Location IconLondon

Propel is looking for a Mid Level Python Engineer in Greater London to join a growing startup focused on climate technology. As part of a small, collaborative team, you'll work on developing their core product while contributing to meaningful proj...Read More>>.

Posted: June 6th, 2026
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Backend & Infrastructure Engineer — Platform Reliability

Company IconSearchability®
Location IconLondon

Searchability® is seeking a Backend & Infrastructure Engineer to join their engineering team in London. This role involves working with backend systems, CI/CD, and deployment infrastructure for a well-funded Series A startup focused on collaborat...Read More>>.

Posted: June 6th, 2026
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Risk Engine Developer - Python, Data & Cloud

Company IconMarex
Location IconLondon

A financial services company in Greater London is seeking a Software Developer to join its Risk Engines team. The role entails enhancing key Risk Engines and integrating applications while utilizing full-stack Python development and cloud technologie...Read More>>.

Posted: June 6th, 2026
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Lead Backend Engineer (Pension Team)

Company IconInvestEngine
Location IconLondon

About InvestEngine InvestEngine is a fast-growing fintech based in London, on a mission to make ETF investing simple and accessible. Over 150,000 clients have trusted us with more than £2,7 billion in assets — and we’re just getti...Read More>>.

Posted: June 6th, 2026
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Senior Staff Backend Engineer

Company IconMonzo Bank
Location IconLondon

...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer (Foundations)

Company IconZebra People
Location IconLondon

A Unicorn company that have recently opened up a Platform Foundations division in London is looking for multiple senior backend engineers to join their London-based team.The clientIt’s an opportunity to have an immediate and r...Read More>>.

Posted: June 6th, 2026
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Python Developer

Company IconPioneer Search
Location IconLondon

This range is provided by Pioneer Search. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Python Developer - London / Hybrid A leading specialist (re)insurer is growing its...Read More>>.

Posted: June 6th, 2026
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Hybrid Web & CMS Platform Architect | Cloud & Microservices

Company IconVodafoneThree
Location IconLondon

VodafoneThree is seeking an innovative IT professional for a role focused on establishing an architecture roadmap and integrating enterprise-scale web applications. The successful candidate will steer technical upgrades and ensure compliance with...Read More>>.

Posted: June 6th, 2026
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Platform Backend Engineer – Scalable APIs & Cloud

Company IconSpeechify
Location IconLondon

Speechify is looking for a talented backend developer to join our Platform team in Greater London. This role involves building and maintaining backend services that power our products, ensuring robust API performance and scalability.The ide...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer at Sektor

Company IconJack & Jill
Location IconLondon

OverviewJob Title: Senior Backend EngineerCompany: Sektor - Autonomous technology deployment platform for heavy industriesJob DescriptionJoin Sektor to build the world’s first orchestration layer for autonomous...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Trust Detection

Company IconDepop
Location IconLondon

Company DescriptionDepop is the community-powered circular fashion marketplace where anyone can buy, sell and discover desirable secondhand fashion. With a community of over 35 million users, Depop is on a mission to make fashion circular, redefining...Read More>>.

Posted: June 6th, 2026
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Forward Deployed Engineer

Company IconTerra API
Location IconLondon

About the Role You are the technical bridge between Terra's platform and our highest‑value customers. You embed directly with their engineering and product teams to architect, integrate, and optimize their use of Terra's health data...Read More>>.

Posted: June 6th, 2026
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Data-Driven Backend Engineer — Carbon Analytics

Company IconAlliedcrowds
Location IconLondon

Alliedcrowds is seeking a skilled individual for a role that merges software development with data science. This position allows for significant ownership and responsibility, requiring a solid background in data engineering and back-end technologi...Read More>>.

Posted: June 6th, 2026
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Sr Backend Engineer - Accounting Integrations & Reporting

Company IconWise
Location IconLondon

Senior Software Engineer I - Backend (Java) - Business Accounting Integrations and ReportingFull-timeCompensation: GBP 85,000 - GBP 105,000 - yearlyWise is a global technology company, building the best way to move a...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer

Company IconStory Terrace Inc.
Location IconLondon

Why We Exist At Raylo, we’re on a mission to accelerate the move to a circular economy. The only way customers and manufacturers will make that shift is if it’s simple and cost-effective - this is where we come in. We’re b...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer

Company IconElliptic Enterprises Limited
Location IconLondon

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Do you want to be part of the future of value transfer? Are you excited about solving problems that have never been solved before? Are y...Read More>>.

Posted: June 6th, 2026
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Junior Backend Engineer - UK

Company IconBumper
Location IconLondon

A Bit About Us We’re a multi-award-winning digital payments and insight platform within the automotive industry. We work with over 5,000 automotive retailers, helping drivers to pay for motoring costs, accessories, and other services...Read More>>.

Posted: June 6th, 2026
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Mid Backend Engineer (Golang)

Company IconOctopus Money
Location IconLondon

We’re looking for a Backend Engineer with solid Golang and database skills to help us build the scalable operations, technology, and processes needed to transform 5 million lives by making high-quality financial support affordable and accessi...Read More>>.

Posted: June 7th, 2026
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Backend Engineer - Hold team

Company IconDangote Industries Limited
Location IconLondon

Company Description Wise is a global technology company, building the best way to move and manage the world’s money. Min fees. Max ease. Full speed. Whether people and businesses are sending money to another country, sp...Read More>>.

Posted: June 8th, 2026
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Lead Python Developer

Company IconTotal Recruitment Group
Location Icon

Lead Python Developer Climate Tech?? London (Hybrid, 3 days per week)?? Python, FastAPI, PostgreSQL, GCP, DockerI'm working with a fast-growing climate-tech non-profit tackling one of the most impor...Read More>>.

Posted: May 13th, 2026
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