Backend Engineer, Vector Index & Graph DB

Company IconJaide Health
Location IconLondon

Jaide Health is seeking a Backend Engineer with expertise in database indexes and algorithm development for their team in Greater London, UK. You will tackle complex computer science problems and develop high-quality code as part of an energetic i...Read More>>.

Posted: June 6th, 2026
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Kernel Backend Engineer - Core Graph DB

Company IconNeo4j
Location IconLondon

Join a forward-thinking company at the forefront of graph database technology! As a Software Engineer, you will tackle complex challenges and contribute to the core of an innovative database solution. Collaborate with a talented team, engage in intel...Read More>>.

Posted: June 6th, 2026
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Senior Backend Architect — Real-Time Gaming

Company IconLegend Corp
Location IconLondon

A tech company in the gaming sector is seeking a Senior Software Engineer to shape the backend architecture for real-time tournaments. The role involves designing scalable systems, conducting code reviews, and optimizing performance bottlenecks. Idea...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 Node.js/TypeScript Engineer – Build Scalable FinTech APIs

Company IconSeccl
Location IconLondon

A leading embedded investment platform in the UK is looking for a Senior Software Engineer to design, build, and operate reliable software solutions using Node.js and Typescript. You'll work collaboratively in cross-functional teams and own your serv...Read More>>.

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

Company IconAlgolia
Location IconLondon

Algolia is seeking a Senior Software Engineer for its Dashboard Platform team based in London, England. This role focuses on empowering developers to ship frontend features and automate infrastructure using tools like Docker, Kubernetes, and Terra...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Real-Time Energy Platform

Company IconFuse Energy
Location IconLondon

A next-generation energy company in London is seeking a Software Engineer to engineer backend infrastructure for their innovative energy solutions. You will work on constructing a real-time digital twin of energy generation and developing messaging i...Read More>>.

Posted: June 6th, 2026
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Flask Backend Engineer (Entry) – Build scalable APIs

Company IconTieTalent
Location IconLondon

Backend Development: Set up and maintain the backend server using Flask to support the application, ensuring scalability, security, and efficiencySeniority levelEntry levelEmployment typeFull-time...Read More>>.

Posted: June 6th, 2026
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Senior Python Developer — Sustainable Indices (Remote)

Company IconLSEG
Location IconLondon

A leading financial services company in Greater London seeks a knowledgeable Quantitative Developer to join their Sustainable Index Research and Design team. The role focuses on developing Python applications to enhance investment analytics and autom...Read More>>.

Posted: June 6th, 2026
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Senior Python Engineer, ML

Company IconLawhive
Location IconLondon

About LawhiveOur mission is to make the law accessible to everyone. The legal industry is built on technology and processes that haven’t been updated in hundreds of years - that’s why we’ve reinvented the entire model from the gr...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer, Gaming - Global, Low Latency

Company IconTencent
Location IconLondon

Tencent is hiring an experienced backend developer for their gaming division in Greater London. The ideal candidate has over 8 years of backend development experience, including at least 5 years in the gaming industry. Responsibilities include provid...Read More>>.

Posted: June 6th, 2026
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Senior Backend/Fullstack Engineer — Impact, Equity & Hybrid

Company IconPersonio
Location IconLondon

Personio is hiring a Senior Software Engineer in London, offering a hybrid working model with the flexibility to work 2 days in-office. You will design and scale backend or fullstack systems for thousands of users, collaborating with cross-functional...Read More>>.

Posted: June 6th, 2026
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Senior Backend Architect - Ultra-Scale Data Platform

Company IconMenlo Ventures
Location IconLondon

A leading data and AI firm in Greater London seeks a Senior Staff Software Engineer to design and maintain backend systems that power their platform. Must have over 15 years of experience in distributed systems and a strong foundation in algorithms....Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer — Remote, Equity & Growth

Company IconPigment
Location IconLondon

An AI‑powered business planning platform in Greater London is seeking skilled software engineers to develop and maintain their SaaS platform. Candidates should have strong software engineering skills, proven experience with object-oriented language...Read More>>.

Posted: June 6th, 2026
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Senior PHP Engineer (Contract)

Company IconLendable
Location IconLondon

Requirements 8+ years experience with PHP Strong, business oriented, product engineer with modern PHP development experience (PHP 8.0+ is a must) High degree of ownership and autonomy A good understandi...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer – Trading Systems & Cloud

Company IconTP ICAP Group
Location IconLondon

TP ICAP Group is looking for a Senior Back-End Engineer in Greater London. In this role, you will design and maintain high-performance, data-intensive applications and APIs, ensuring system reliability while collaborating with architects and stakehol...Read More>>.

Posted: June 6th, 2026
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Python Lead Engineer – Global Commodities Platform

Company IconJPMorgan Chase & Co.
Location IconLondon

A leading financial services company is seeking a Python Lead Software Engineer to join its Commodities Derisking Team. You will be responsible for developing next-generation applications for trading desks globally, leveraging your expertise in Pytho...Read More>>.

Posted: June 6th, 2026
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Senior Fullstack Engineer Build Scalable Microservices

Company IconLegal & General
Location IconLondon

Job Description We are seeking a Senior Software Engineer to join a high‑performing engineering team delivering robust, scalable, and high‑quality software solutions. In this role, you will apply your technical expertise and strate...Read More>>.

Posted: June 6th, 2026
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Security‑Focused Backend Engineer

Company IconBoam AI
Location IconLondon

A leading technology firm in Greater London is seeking a Security & Backend Engineer to enhance its core data solutions. The ideal candidate will own backend services and ensure data and system security, balancing feature delivery with long-term hard...Read More>>.

Posted: June 6th, 2026
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Senior Backend‑Focused Full‑Stack Engineer — Scale Impact

Company IconPreply
Location IconLondon

A leading educational technology company in Greater London is searching for a Full-Stack Developer to engage in backend and frontend development using cutting-edge technologies like Python and Django. The ideal candidate will thrive in a collaborativ...Read More>>.

Posted: June 6th, 2026
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Security-Driven Systems Engineer (Python/Go)

Company IconHudson River Trading
Location IconLondon

A financial technology firm in London seeks an Experienced Software Engineer focusing on Security to enhance tools and systems for secure machine provisioning. This role requires strong Python skills, Linux experience, and the ability to tackle secur...Read More>>.

Posted: June 6th, 2026
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Senior Full-Stack Engineer: JVM/Kotlin, Hybrid

Company IconSimple Machines
Location IconLondon

A boutique technology firm is seeking a Senior Full Stack Engineer to drive the development of scalable solutions across the full technology stack. This role involves working closely with internal teams and clients to deliver robust backend services,...Read More>>.

Posted: June 6th, 2026
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Hybrid Integration Engineer – API & Finance Data

Company IconATALIAN SERVEST
Location IconLondon

About The Company:OCS UK & Ireland is a leading facilities management company with 50,000+ colleagues and a turnover in excess of £2bn. We deliver innovative, award-winning services within facilities management, hard services, clea...Read More>>.

Posted: June 6th, 2026
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Trading Systems Engineer - C++/Python, High Availability

Company IconDRW Holdings, LLC.
Location IconLondon

A leading trading firm in London is seeking a Software Engineer to design and develop high availability trading systems using C++ and Python. The ideal candidate will have over 5 years of C++ experience and a strong understanding of concurrency and s...Read More>>.

Posted: June 6th, 2026
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Backend Engineer, Cloud Platform - .NET & Azure

Company IconMoneybox
Location IconLondon

OverviewThe Cloud Apps team build and run the cloud-hosted systems that power the Moneybox mobile apps. They follow an agile, continuous delivery model where the development teams are fully responsible for delivering the end-to-end ser...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer, Subscriptions — Remote & Hybrid

Company IconSpotify
Location IconLondon

Spotify is seeking an experienced backend developer to design and build scalable Java services that power its merchandising platform. The role requires at least 5 years of experience in backend systems and expertise in cloud services like GCP or AWS....Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Build Scalable Green Tech

Company IconOctopus Energy
Location IconLondon

Octopus Energy based in London is looking for a backend developer with 5+ years of experience in web application development, particularly with Python and Django. The role involves designing systems in cloud environments and collaborating across team...Read More>>.

Posted: June 6th, 2026
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Backend Engineer - Platform - Stacks | UK | Remote

Company IconGrafana Labs
Location IconLondon

Backend Engineer - Platform - Stacks This role is available for candidates located in the UK, Germany, Spain, Ireland and Sweden. Overview Grafana Labs is a remote‑first, open‑source powerhouse. There are more than...Read More>>.

Posted: June 6th, 2026
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C# Developer .Net SQL API

Company IconClient Server
Location IconLondon

Salary: GBP75000 - GBP90000 per annum + benefits C# Developer / Software Engineer (C# .Net SQL API) – London onsite Are you an ambitious and motivated C# Developer looking for an opportunity to progress your career, working on...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer: Scalable APIs, Cloud, Autonomy

Company IconRedCat Digital
Location IconLondon

RedCat Digital is seeking a Backend Engineer to join their high-growth SaaS business. You will be responsible for designing, building, and deploying scalable backend systems as well as improving existing features.The ideal candidate will ha...Read More>>.

Posted: June 6th, 2026
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Senior Golang Engineer: Build Scalable Microservices

Company IconGolang Works
Location IconLondon

This is a job posted by our partner JoobleJob OverviewTo view the full job description, please apply via the provided link.Backend Solutions6-9 years of backend engineering experienceStrong coding s...Read More>>.

Posted: June 6th, 2026
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Rust Staff Engineer: Lead Secure, Scalable Backend Systems

Company IconRustsyndi
Location IconLondon

A leading tech company in London is seeking a Staff Software Engineer with deep expertise in Rust. In this senior role, you will lead backend system design and collaborate with cross-functional teams. Candidates should have a proven track record in s...Read More>>.

Posted: June 6th, 2026
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Senior Python Tools Engineer — TDD & Scalable Tooling

Company IconStars Arena
Location IconLondon

Stars Arena is looking for a Senior Tools Software Engineer based in London, United Kingdom. The ideal candidate must possess proficiency in Python programming, focusing on scalable, maintainable, and test-driven development. This full-time role i...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer ($180K - $220K + Equity) at Duckbill

Company IconJack & Jill
Location IconLondon

Job Title Senior Backend Engineer Salary $180K - $220K + Equity Company Duckbill - VC-backed cloud cost platform Location San Francisco, USA Overview Join the founding eng...Read More>>.

Posted: June 6th, 2026
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AWS API & Data Platform Architect

Company IconCapgemini
Location IconLondon

Capgemini in Greater London is seeking an experienced API Engineer to join their Data Platforms team. You will design and implement API architectures on AWS, ensuring secure integration while collaborating with various stakeholders. This role require...Read More>>.

Posted: June 6th, 2026
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Platform Engineer AWS Python - Fintech

Company IconClient Server
Location IconLondon

Platform Engineer AWS Python – Fintech (PR/100597) London, England Salary: GBP85000 - GBP100000 per annum + bonus + benefits Platform Engineer (AWS Python) London / WFH to £100k Do you have expertise with AWS?...Read More>>.

Posted: June 6th, 2026
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Senior Backend Architect: Distributed Systems (Remote)

Company IconUNAVAILABLE
Location IconLondon

Publicis Groupe is looking for a Senior Backend Engineer in Greater London to lead backend system design and development for OneSuite. The ideal candidate should have solid experience in backend engineering, especially with Python and FastAPI, and co...Read More>>.

Posted: June 6th, 2026
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Python Platform Engineer (Contract)

Company IconBarlowe LLP
Location IconLondon

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity. From our London HQ, we unite world‑class researchers and engineers in an environment that values deep exploration and methodi...Read More>>.

Posted: June 6th, 2026
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Front-Office Python Engineer - Trading Tools & Impact

Company IconHunter Bond
Location IconLondon

Hunter Bond is looking for a Python Engineer to join their leading global hedge fund. This front-office role allows you to work closely with Portfolio Managers and Quants to build high-performance tools that directly impact trading strategies and...Read More>>.

Posted: June 6th, 2026
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Senior Scala Engineer - Hybrid Backend (London)

Company IconArrows
Location Icon

A technology consulting firm is looking for a Senior Scala Engineer to build and maintain backend services while integrating data. The ideal candidate will have strong Scala skills, exposure to Docker, Kubernetes, and CI/CD processes, alongside a sol...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Remote/Hybrid (Scala)

Company IconDEPOP
Location IconLondon

DEPOP is seeking an experienced Senior Backend Software Engineer to join our team in Greater London. In this role, you will collaborate within a product engineering team to develop services enhancing customer interaction.Your responsibiliti...Read More>>.

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

Company IconDepop Limited
Location IconLondon

Depop Limited is seeking a Senior Backend Engineer to join our AdTech team in Greater London. You will help design and build scalable systems for advertising and monetization, ensuring real-time decision making.The ideal candidate has exper...Read More>>.

Posted: June 6th, 2026
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Front Office Python Developer - Trading Tools (Hybrid)

Company IconRJC Group
Location IconLondon

RJC Group is looking for a Python Developer to join their Front Office Delivery team in London, supporting traders. You will develop and enhance Python-based applications, take responsibility for the full delivery lifecycle, and collaborate with e...Read More>>.

Posted: June 6th, 2026
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Backend Engineer (C#) — Remote-Ready, Scalable APIs

Company IconInforcer
Location IconLondon

A cybersecurity solutions provider in Greater London is seeking a skilled Backend Engineer to design and develop backend systems. The ideal candidate will have experience with .NET and C#, API development, and cloud services. The role offers flexibil...Read More>>.

Posted: June 6th, 2026
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Engineering Lead, API Experience & Developer Platform

Company IconWise
Location IconLondon

A global technology company is seeking an experienced Engineering Lead to manage a team focused on creating a robust API experience. The role involves enhancing security measures and improving developer tools, ensuring a world-class user experience....Read More>>.

Posted: June 6th, 2026
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Backend Product Engineer: Scale & AI Infra

Company IconGranola
Location IconLondon

Granola is seeking a Product Engineer focused on the Backend to help scale systems for the next 100x users. This role involves building secure infrastructure and developing robust backend solutions.We look for an individual passionate about...Read More>>.

Posted: June 6th, 2026
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Senior Platform Solutions Engineer (API & Partnerships)

Company Iconhackajob
Location IconLondon

hackajob is looking for a Senior Solutions Engineer to join the Wise Platform team in London. This role involves providing technical consulting to major financial institutions, enhancing integration experiences, and managing multiple integrations...Read More>>.

Posted: June 6th, 2026
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Senior Enterprise Solutions Engineer - API & Integration

Company IconLuminance
Location IconLondon

A pioneering legal tech company based in Greater London is seeking a Senior Customer Solutions Engineer who will work across Sales, Product and Customer Success. The candidate should have strong technical skills, integrating solutions to enhance cust...Read More>>.

Posted: June 6th, 2026
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Python Developer — Cloud-Native, AWS & Serverless

Company IconBreakthrough Talent
Location IconLondon

Breakthrough Talent in West London is searching for a skilled Software Engineer (Python) to join their Data Cloud engineering team. The role prioritizes building high-availability platforms with modern AWS services and emphasizes a strong DevOps t...Read More>>.

Posted: June 6th, 2026
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Senior Golang Engineer - Fintech Microservices (Hybrid)

Company IconLloyds Bank plc
Location IconLondon

Lloyds Bank plc is looking for a Senior Software Engineer specializing in Golang to join their innovative team in London. You will be responsible for building performant and secure Golang microservices, guiding discussions, and implementing best p...Read More>>.

Posted: June 10th, 2026
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