Senior Software Engineer — Full-Stack Python & React

Company IconSelby Jennings
Location IconLondon

A leading investment management firm in London is seeking an expert Software Engineer to join their Data Products team. The ideal candidate will have proficiency in Python, TypeScript, and React, with 4+ years of software engineering experience. This...Read More>>.

Posted: June 6th, 2026
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Senior Software Engineer – Climate Tech (Python/React)

Company IconOliver Bernard
Location IconLondon

Oliver Bernard is hiring a Senior Software Engineer (Python/React) in Greater London to develop software for climate technology initiatives. This role involves full-stack product development and partnership with a small, mission-led team. Candidates...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Kotlin/AWS, Lead & Mentor

Company IconZopa Bank
Location IconManchester

A modern banking institution in Manchester is seeking a Senior Software Engineer to design and run scalable backend systems using Kotlin and AWS. The ideal candidate will have strong experience in backend engineering and a passion for building reliab...Read More>>.

Posted: June 6th, 2026
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Senior .NET Engineer: HealthTech API & Azure Expert

Company IconBrio Digital
Location IconLeeds

A digital health consultancy is seeking a .NET Developer to support a national digital transformation project in Leeds. The role requires strong C#/.NET Core and React expertise and experience in healthcare integration, specifically within NHS or gov...Read More>>.

Posted: June 6th, 2026
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Senior Python Engineer - Math-Driven Optimization (Remote)

Company IconScanmarQED
Location Icon

A leading provider of analytical solutions is seeking a Senior Python Software Engineer with a strong mathematical background. The ideal candidate will design and develop advanced Python-based modules for optimization and analytics, work with modern...Read More>>.

Posted: June 6th, 2026
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Senior Python Engineer - Real-Time Data, Remote & Equity

Company IconVortexa Ltd
Location IconLondon

Vortexa Ltd is seeking a talented engineer to design and build robust data processing infrastructure in a fast-paced environment. The role includes ensuring data pipeline reliability and collaborating with engineers and data scientists. Candidates sh...Read More>>.

Posted: June 6th, 2026
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London Hybrid Lead Software Engineer — AWS & API

Company IconLorien
Location IconLondon

Lorien is seeking a hands-on Lead Developer for a hybrid position in London. This role involves taking technical ownership of software delivery across the Distribution/Broker Connectivity platform within an Agile team.The ideal candidate wi...Read More>>.

Posted: June 6th, 2026
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Mid / Senior Software Engineer - Full Stack (React / TypeScript / Node.js)

Company IconAforza
Location IconStoke on Trent

£55,000 - £70,000 (dependent on experience) Cardiff / Remote (UK only) About Aforza Aforza aims to transform the lives of every consumer on the planet by helping the world’s best Consumer Goods companies become more a...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer – Golang, Redis, GCP | Hybrid

Company Iconbet365
Location IconStoke on Trent

Join bet365 as a Senior Software Developer focusing on the FollowScores app to enhance its features and user experience. You will lead a dynamic team in developing scalable systems using technologies such as Golang, Redis, and GCP. This hybrid role a...Read More>>.

Posted: June 6th, 2026
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Backend Engineer: Data Pipelines, APIs & DB Mastery

Company IconM&C Saatchi
Location IconCity of Westminster

A leading communications agency in the United Kingdom is seeking a skilled Backend Engineer to lead their API and database development efforts. This hybrid role involves working closely with product, data, and engineering teams to create resilient da...Read More>>.

Posted: June 6th, 2026
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Mid-Level Python Developer: Equities Derivatives Automation

Company IconApex Systems
Location IconBromley

A leading technology firm in the United Kingdom is seeking a dynamic mid-level developer to join their Equities Derivatives Technology team. The successful candidate will work on designing and developing Python-based solutions that contribute to the...Read More>>.

Posted: June 6th, 2026
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Software Engineer (PHP/Laravel) - Remote, 4-Day Week

Company IconFeedinkoo
Location Icon

Feedinkoo is seeking a Software Engineer to develop high-quality software solutions. The role offers a competitive salary, a 4-day working week, and a collaborative environment.Responsibilities include implementing software systems that ali...Read More>>.

Posted: June 6th, 2026
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AI-Driven Backend Engineer – FinTech & Scale

Company IconClearwater Analytics, Ltd
Location IconCity of Edinburgh

A leading technology platform in the United Kingdom is seeking a Software Development Engineer to develop high-quality software solutions for investment analysis. Ideal candidates will have 4+ years of Java programming experience, strong problem-solv...Read More>>.

Posted: June 6th, 2026
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Senior .NET Backend Engineer — Flexible, High-Impact Games

Company IconHarvey Nash
Location Icon

A global technology recruiting firm is seeking a Senior .NET Developer in England. This role involves building online presences for clients, requiring strong skills in C# and .NET, with additional experience in databases and SQL. The company offers a...Read More>>.

Posted: June 6th, 2026
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Cloud-Native Software Engineer - API-first, Go/TS, Remote

Company IconFinova
Location IconManchester

Finova, located in Manchester, is looking for cloud first developers to join their agile team. As a cloud first developer, you will build scalable B2B workflow solutions and develop cloud-native solutions with an API first approach. This role emphasi...Read More>>.

Posted: June 6th, 2026
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Python Engineer: Sports Betting Data & Trading Tools

Company IconVenture Up
Location Icon

A sports betting technology firm in London is seeking a Python Engineer to develop tools and systems for traders. The successful candidate will have 2-4 years of experience in Python development and must be able to write clean, maintainable, and well...Read More>>.

Posted: June 6th, 2026
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Lead Python Engineer - Build Secure, Scalable Tech

Company IconJPMorgan Chase & Co.
Location Icon

A major financial services firm in the UK is seeking a Lead Software Engineer to enhance, build, and deliver advanced technology products. The role requires advanced coding in Python and cloud-native experience, along with leading creative software s...Read More>>.

Posted: June 6th, 2026
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Investment Tech Python Engineer

Company IconSource Technology Limited
Location Icon

Source Technology Limited is seeking a passionate Python Software Engineer to join their Investment Technology team. This role involves developing data processing and analytical tools that impact the investment business. The ideal candidate will h...Read More>>.

Posted: June 6th, 2026
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Senior .NET Engineer — Cloud, API & Mentoring

Company IconDifferent Technologies Pty Ltd.
Location IconLondon

Different Technologies Pty Ltd. based in Greater London is seeking a Senior .NET Developer to design and build modern software solutions across various industries including fintech and healthcare. This role requires 6+ years of .NET experience, an...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Platform & Cloud (Kotlin/AWS)

Company IconTrade Republic
Location IconLondon

Trade Republic is seeking (Mid/Senior/Staff) Backend Engineers in London to build and design cloud services using JVM tools like Kotlin and Spring. The role requires at least 5 years of software engineering experience, focusing on scalable service-or...Read More>>.

Posted: June 6th, 2026
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Remote C++ Audio Software Engineer (JUCE, Python, DSP)

Company IconComputerworld Personnel Ltd
Location IconBristol

Computerworld Personnel Ltd is seeking a Software Developer in Bristol. You will work on exciting projects involving the development of audio plugins and systems using C++. The ideal candidate has over 2 years of experience with C++, a strong gras...Read More>>.

Posted: June 6th, 2026
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Senior AI Backend Engineer - Hybrid London Travel Allowance

Company IconDuffel
Location IconLondon

Duffel is seeking a Senior AI Engineer in London to design and build production-grade AI agents. You will contribute to the core platform that powers these agents, ensuring reliability and personalisation. Ideal candidates should have extensive exper...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer — Casino UX (Remote, UK)

Company IconMidnite
Location IconLondon

A gaming technology company is seeking a Senior Backend Engineer to join their Casino UX team. This remote role involves building and maintaining backend systems, developing APIs, and ensuring high engineering standards. Candidates need 5+ years of e...Read More>>.

Posted: June 6th, 2026
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Capital Markets Backend Engineer – Scalable SaaS Platform

Company IconTrades Workforce Solutions
Location IconLondon

A capital markets technology company in Greater London seeks a backend engineer to build scalable services for a SaaS platform. You'll design and develop APIs, support high-availability systems, and enhance performance. Ideal candidates will have exp...Read More>>.

Posted: June 6th, 2026
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Senior Software Engineer - C#, .Net, API

Company IconFuture Talent Group
Location Icon

Overview Senior Software Engineer – Full Stack | Robotics | Product-Led Scale-Up | Bristol (Hybrid) We’re working with a fast-growing scale-up at the intersection of robotics, advanced manufacturing, and automation, and they’...Read More>>.

Posted: June 6th, 2026
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Senior C# Backend Engineer | DDD, REST, Multithreaded

Company IconOctad Recruitment Limited
Location Icon

A leading telecommunications company in the United Kingdom is seeking a Senior C# Developer with over 4 years of experience. In this role, you will collaborate with the Principal Architect to deliver innovative back-end solutions. Ideal candidates wi...Read More>>.

Posted: June 6th, 2026
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Gen AI Python Software Engineer

Company IconCiti
Location IconBelfast

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, g...Read More>>.

Posted: June 6th, 2026
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Senior .NET Software Engineer - Azure, API & Hybrid

Company IconComputerworld Personnel Ltd
Location IconBristol

A recruitment agency seeks a Senior .Net Developer for a hybrid role in Birmingham. The candidate should have expertise in C#, .Net, and Azure technologies, with the ability to work autonomously and in a team. Responsibilities include hands-on develo...Read More>>.

Posted: June 6th, 2026
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Staff Platform Engineer: API Edge & Cloud Infra Leader

Company IconApex Fintech Solutions UK
Location IconNorthern Ireland

A leading fintech company is seeking a Staff Platform Engineer to design and optimize our API management solutions. This role offers the opportunity to work in a hybrid environment, collaborating with cross-functional teams to ensure high performance...Read More>>.

Posted: June 6th, 2026
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Senior Software Engineer – Python & C# for Semantic Search

Company IconLexisNexis Risk Solutions
Location IconFarringdon

LexisNexis Risk Solutions is looking for a Software Engineer III (Python & C#) to architect and build complex systems in Farringdon, UK. You will develop a semantic search API and maintain tools, ensuring quality at every step through code reviews...Read More>>.

Posted: June 6th, 2026
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Hybrid Full Stack Engineer (TDD, C# / JS) – API Integrations

Company IconAdria Solutions Ltd.
Location IconWarrington

Adria Solutions Ltd. in Warrington seeks a Full Stack Engineer with strong test-driven development experience. The role involves designing and delivering API integrations across a cybersecurity platform, collaborating with QA and DevOps teams....Read More>>.

Posted: June 6th, 2026
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Senior C# .NET Backend Engineer – High Impact, London Office

Company IconClient Server
Location IconLondon

Client Server is seeking an experienced Senior Software Developer / Software Engineer (C# .Net) to join their team in London. In this full-time role, you'll work in plush City offices and enjoy a competitive salary up to £150k plus bonuses and be...Read More>>.

Posted: June 6th, 2026
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Senior Backend Software Engineer - Application Development

Company IconThe Rundown AI, Inc.
Location IconLondon

A World-Changing Company 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 lifesaving drugs...Read More>>.

Posted: June 6th, 2026
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Senior AI-Driven SDLC Engineer (Python/FastAPI)

Company IconClearRoute
Location IconLondon

ClearRoute is seeking a hands-on technical lead in Greater London to deliver production-quality Python/FastAPI services on an agile platform. You will work directly with the chief architect and lead by example, owning contributions from developmen...Read More>>.

Posted: June 6th, 2026
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Senior Server Engineer — Next-Gen Backend for Mobile Games

Company IconPixel Toys
Location IconRoyal Leamington Spa

A mobile gaming studio in Royal Leamington Spa is seeking a talented Server Engineer to build and maintain the high-performance infrastructure for their AAA mobile title. This role involves complex feature development, collaboration with creative tea...Read More>>.

Posted: June 6th, 2026
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Backend Engineer III – Flexible UK Remote + Stock Options

Company IconMonzo Bank
Location IconLondon

A modern banking startup in the UK seeks an experienced Backend Engineer to enhance their technology products. You will collaborate within diverse teams to tackle exciting challenges in financial technology, working with various tools such as Go and...Read More>>.

Posted: June 6th, 2026
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Hybrid Senior Python Engineer: FastAPI, Databricks & APIs

Company IconOliver Bernard
Location Icon

A leading recruitment firm is seeking a Senior Support Consultant to join a Global Insurance Leader's expanding Python Engineering team. The ideal candidate will design and build high-performance APIs and enhance existing platforms. Strong proficienc...Read More>>.

Posted: June 6th, 2026
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Senior Full Stack Engineer: React & Python, Cloud-Native

Company IconLawrence Harvey
Location IconLeeds

A leading tech scale-up in the United Kingdom is searching for a Senior Full Stack Engineer with expertise in React and Python. The successful candidate will develop flagship products, collaborate closely with cross-functional teams, and influence th...Read More>>.

Posted: June 6th, 2026
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Golang Engineer - Microservices & REST APIs (Hybrid Remote)

Company IconTalent-Relay Limited
Location Icon

A leading recruitment agency is seeking a Software Engineer specializing in Golang for a long-term contract position in Burgess Hill, UK. Candidates should have strong experience in developing resilient software, implementing high-volume REST APIs, a...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - Casino UX at Midnite

Company IconJack & Jill/External ATS
Location IconLondon

Job Title Senior Backend Engineer - Casino UX Company Description Midnite - Series C betting platform backed by $75M+ from Raine Group and Makers Fund. Job Description Join the Casino UX team to build th...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer for DAG‑Driven Orchestration

Company IconJack and Jill AI
Location IconLondon

Jack and Jill AI is seeking a Senior Backend Engineer to design an orchestration layer for deploying autonomous technology in heavy industries. You will build integrations using Python and FastAPI, ensuring platform reliability through CI/CD pipeline...Read More>>.

Posted: June 6th, 2026
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Cloud Engineer - Python/Go & Terraform, London

Company IconGolang Works
Location IconLondon

Golang Works is seeking a Cloud Engineer to design and maintain cloud infrastructure. You will be required to work with operating systems and coding in Python or Go.This full-time role offers a competitive compensation ranging between £100...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer - AWS Serverless & TS/Node

Company IconInsight Global
Location IconLondon

Insight Global is searching for a Sr. Backend Engineer to join the senior level team focused on partnership platforms. The ideal candidate must have experience with Typescript and Node.js for backend development in an enterprise setting, extensive ex...Read More>>.

Posted: June 6th, 2026
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Senior AI Platform Engineer - Backend (TS/Node)

Company IconContentful
Location IconLondon

Contentful is seeking a Senior AI Software Engineer to innovate with AI Integrations. You will collaborate with product managers and designers to build AI-enabled features, design scalable AI platform features, and implement cutting-edge AI technolog...Read More>>.

Posted: June 6th, 2026
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Senior Internal Model Actuary – Python & DevOps (ERM)

Company IconThe Emerald Group
Location IconLondon

The Emerald Group is seeking a Model Implementation Actuary in London. In this permanent role, you will design, develop, and document internal models for various financial risks, including credit and interest rates. A strong background in capital mod...Read More>>.

Posted: June 6th, 2026
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Backend Product Engineer: Scale APIs & AI Infra (London)

Company IconGranola inc
Location IconLondon

A dynamic technology startup in London is looking for a Product Engineer focused on the Backend. This role involves scaling and evolving backend infrastructure, designing APIs, and implementing AI capabilities. The ideal candidate has strong skills i...Read More>>.

Posted: June 6th, 2026
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Cloud Data Platform Engineer - Multi-Tenant & API-Driven

Company IconNextWave Consulting Ltd
Location IconLondon

NextWave Consulting Ltd is seeking a Data Technology Engineer in London to design, build, and run secure, multi‑tenant data platform capabilities. This role will focus on platform services, security, and observability, enabling reliable access to d...Read More>>.

Posted: June 6th, 2026
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Laser Equipment Maintenance Engineer - Hybrid & Flexible

Company IconAPI Microelectronics Ltd.
Location IconGreat Yarmouth

API Microelectronics Ltd. in Great Yarmouth is seeking a skilled Manufacturing Engineer to support maintenance within a fast‑paced environment. The role involves maintaining and repairing laser systems, ensuring compliance with safety standards,...Read More>>.

Posted: June 6th, 2026
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Field Service & Repair Engineer / Assembler

Company IconAPI Delevan, Inc.
Location IconBedford

Field Service & Repair Engineer / Assembler page is loaded## Field Service & Repair Engineer / Assemblerremote type: Hybridlocations: Bedford, Bedfordshire, United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: R25\_0...Read More>>.

Posted: June 6th, 2026
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Senior Backend Engineer — Go, TS & AWS Lead

Company IconRonald James Ltd.
Location IconNewcastle upon Tyne

Ronald James Ltd. is looking for a Backend Engineer based in Newcastle upon Tyne to own and lead core backend platform services. This hands-on leadership role involves mentoring developers, shaping technical standards, and ensuring the reliability...Read More>>.

Posted: June 6th, 2026
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