Lead Software Engineer Python Java Jobs in London, UK

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Senior AI Engineer, Build In House Agentic AI for Finance

La Fosse is seeking a hands-on AI Engineer in Greater London to develop in-house AI capabilities for managing $50B+ in assets. You will create RAG systems, work with LLMs, and build production APIs using Python. Ideal candidates will have 1-2+ years in AI engineering, 4 years in software or ML, and a background ...

Senior AI Engineer Healthcare Communications & Secure Data

Niulix is seeking a Software Engineer in Greater London to deploy AI systems in healthcare, focusing on patient communication, triage, and secure data layers using Python. The ideal candidate will have over 5 years of experience building complex, production-grade systems and a proven record of turning ambiguous ...

Rust Kernel Engineer – Scalable Backend & Observability

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. Candidates should be experienced in backend systems development us ...

Cloud Native Microservices Engineer II

JPMorgan Chase is seeking a Software Engineer II to enhance and build trusted technology products within the Global Banking Platform. The role involves developing scalable microservices using best practices and participating in a secondment with a FinTech partner. Candidates should have experience in programming ...

Staff SRE: Scale, Reliability & Cloud Native Systems

Genesis AI, located in the Greater London area, seeks a software engineer to tackle challenges related to reliability, scalability, and system performance. The successful candidate will design and optimize distributed systems using technologies such as Kubernetes and Python. Responsibilities include driving solu ...

Senior Simulation Engineer Robotics & Visual Fidelity

Wayve is seeking a Software Engineer for the Simulation Technology team in Greater London. This full-time role involves expertise in evolving core components of Wayve's simulation platform, focusing on video fidelity and robot emulator fidelity, among others. The ideal candidate has over 5 years of industry expe ...

ML Tech Lead & Strategy Architect — London

Capital One is looking for a Staff Software Engineer - Machine Learning based in Greater London. In this hybrid role, you'll own the ML/AI technical strategy for UK use cases, drive architecture for AI solutions, and collaborate with teams to enhance delivery. The ideal candidate has deep expertise in Python, ML ...

Data Engineer – Fintech Platform & AI Ingestion

Kalpa Group in Greater London is looking for a Software & Data Engineer to tackle complex data issues in the fintech sector. The role involves owning ingestion pipelines, designing scalable data models, and integrating AI into the platform for improved data quality and reliability. Candidates should have strong ...

Senior Software Engineer – AI for Sustainable Construction

AECOM in Greater London is seeking a Senior Software Engineer to join their AI Engineering team. In this role, you will design and build platform services, ensuring ML models run reliably while optimizing AI workloads using technologies like Docker and GitHub Actions. The ideal candidate will have strong program ...

Junior Software Engineer (Hybrid) London, DevOps & Cloud

A forward-thinking technology company in London is seeking a Graduate / Junior Software Engineer to join their growing team. This hybrid role offers a great opportunity for someone early in their career to gain hands-on experience with scalable and secure systems. Responsibilities include automating DevOps workf ...

Hybrid Senior Full Stack Engineer — Data Platforms & AI

RSMB is seeking a Senior Full Stack Engineer in London, working hybrid (2 days in the office). This full-time role offers a competitive salary of up to £85,000 per annum. The position involves designing high-performance applications and collaborating with data science teams. Candidates should have 5–10 years of ...

Senior AI Python Engineer — Remote (UK) for AI driven Apps

A leading tech solutions provider in the UK seeks a Senior Software Engineer proficient in Python and modern AI frameworks. The role involves designing and building applications, collaborating with client teams, and ensuring technical quality across projects. Candidates should have experience in agile environmen ...

Senior Workflow Orchestration Engineer

A leading financial technology company in London is seeking a Senior Software Engineer in Workflow Orchestration. The successful candidate will develop internal and client-facing APIs, work with distributed systems, and be part of an innovative team tackling workflow management. This role requires proficiency in ...

Senior DevTools Engineer Hybrid Work, High Impact Tools

Tower Research Capital, located in Greater London, is seeking an experienced software engineer to enhance developer productivity and systems infrastructure. You'll design tools, automate workflows, and collaborate across teams. Ideal candidates should have strong programming skills in C++, Rust, and Python, alon ...

Senior Software Engineer Payments & Cross Border Platform

Ebury is seeking a Senior Software Engineer to join our London office in a hybrid capacity. You will be integral in developing our multi-currency account systems, enhancing payment processes. Responsibilities include leading product initiatives, collaborating with cross-functional teams, and mentoring junior eng ...

Senior Test Automation Engineer: CI/CD & Cross Platform QA

A leading gaming and entertainment company in London is seeking a Senior Software Development Engineer in Test. This role focuses on developing automation and robust CI/CD systems to enhance test coverage and workflow. The ideal candidate will have extensive experience with Python, CI/CD pipeline maintenance, an ...

Back End Engineer (Generative AI) in London Neo4j

Staff-Level Full-Stack Software Engineer 108 E 16th Street, New York, NY 10003 Job Description Expand our suite of GenAI offerings. Key Responsibilities Design, develop, and maintain high-performance back-end systems using Python to support GenAI ...

GPU Performance Optimization Engineer

A leading technology company in the United Kingdom is seeking a GPU Performance Analysis Engineer. This role focuses on developing and validating performance test plans for GPUs, analyzing performance issues, and collaborating with engineers to identify solutions. The ideal candidate will have strong skills in h ...

Senior Full Stack Engineer AI Powered Wellness Platform

A healthtech SaaS startup in London is seeking a Full Stack Software Engineer to help shape a B2B2C platform focused on stress reduction and resilience. The role requires extensive experience in developing solutions using React, Python, and Django. The ideal candidate should have a strong interest in wellbeing t ...

Senior Data Pipeline Engineer AI Driven & Large Scale

A leading global finance and data company is seeking a Senior Software Engineer to build scalable data pipelines. The role demands strong backend Python expertise, a solid understanding of system design, and experience with ETL workflows. You'll work closely with engineering peers and foster strong relationships ...

Senior Software Engineer – AI for Sustainable Construction

AECOM in Greater London is seeking a Senior Software Engineer to join their AI Engineering team. In this role, you will design and build platform services, ensuring ML models run reliably while optimizing AI workloads using technologies like Docker and GitHub Actions. The ideal candidate will have strong program ...

Senior Core Services Engineer – Secure Auth & Observability

A leading technology firm in Greater London is seeking a Senior Software Engineer to join their Core Services team. The role involves designing and implementing robust authentication and authorization systems while building fine-grained access control models. The ideal candidate should have a strong command of G ...

Senior Software Engineer Hybrid Build Impactful Tools

A leading tech company is seeking a Senior Software Engineer to design and build innovative tools and platforms. This role involves delivering scalable solutions, championing best practices, and integrating data into insightful tools. Candidates should possess strong skills in JavaScript/TypeScript, Python, and ...

Senior Simulation Engineer Robotics & Visual Fidelity

Wayve is seeking a Software Engineer for the Simulation Technology team in Greater London. This full-time role involves expertise in evolving core components of Wayve's simulation platform, focusing on video fidelity and robot emulator fidelity, among others. The ideal candidate has over 5 years of industry expe ...

Senior Software Engineer – Supplier Data Platform (Remote)

A leading product experience company in Greater London is seeking a Senior Software Engineer to drive the development of innovative features in their Supplier Data Manager product. The ideal candidate will have over 8 years of full-stack engineering experience, strong skills in Python and TypeScript, and a passi ...

London based Senior Software Engineer – Travel Platform

A leading travel management company is looking for a Senior Software Engineer in London. This role involves developing a travel-related web product using Python and Django, integrating with 3rd party APIs, and designing system architectures. Candidates should possess a strong programming background, a passion fo ...

Senior AI Security Engineer Hybrid, Flexible Hours

A leading AI organization in Greater London is seeking a Security Engineer to safeguard AI systems. Your role will involve building security for large-scale AI clusters and creating secure development practices. Ideal candidates will have significant software engineering experience, a Bachelor's degree in a rele ...

FX Quantitative Developer

Bonhill Partners are working closely with a well-established Crypto exchange to hire a Quantitative Java Developer to work on their low latency/HFQ trading platforms. This is a Hybrid role with a requirement of 2/3 days in office. Requirements: Advanced Java develop ...

FX Quantitative Developer

Bonhill Partners are working closely with a well-established Crypto exchange to hire a Quantitative Java Developer to work on their low latency/HFQ trading platforms. This is a Hybrid role with a requirement of 2/3 days in office. Requirements: Advanced Java develop ...

Founding AI Engineer

TalentCo Greater London, England, United Kingdom TalentCo are delighted to be working with one of Silicon Valley's most exciting Agentic AI startups (YC25), looking to hire a world-class Founding AI Engineer into their London hub, as part of their international expansion from San Francisco. ...

Founding AI Engineer

TalentCo Greater London, England, United Kingdom TalentCo are delighted to be working with one of Silicon Valley's most exciting Agentic AI startups (YC25), looking to hire a world-class Founding AI Engineer into their London hub, as part of their international expansion from San Francisco. ...

Platform Engineer III Core Platform

Overview Fanatics Betting & Gaming (FBG) is seeking a Level 3 Platform Engineer to join our Platform Engineering team. This role sits within our Platform & Architecture group, focusing on infrastructure and deployment capabilities that support our product and engineering teams. As a Level ...

Senior Software Engineer Up to £100k Hybrid working

Senior Software Engineer – Python, AWS, SQL Location: London - Hybrid (2 days per week on-site) Salary : Up to £100,000 Type: Permanent, Full-Time We’re partnering with an exciting, fast-gr ...

Senior Back end Engineer at Vega

This is a job that we are recruiting for on behalf of one of our customers. To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask. Senior Back-end E ...

Senior Back end Engineer at Vega

This is a job that we are recruiting for on behalf of one of our customers. To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask. Senior Back-end E ...

Full Stack AI Engineer Contract Outside IR35

Full Stack Engineer (AI) - Python, TypeScript Contract Initial 6-month Contract Oliver Bernard are partnered with a fast-scaling AI platform building production-grade systems embedded directly into enterprise workflows. This isn’t experimentation, their tech is already ...

Software Engineer Environmental Monitoring in London OxSource

Software Engineer - Environmental Monitoring London, United Kingdom Posted 9 months ago Tech Stack JavaScript Django Angular React Monitoring Python Frontend Apps Development Opportunity < ...

Enterprise Platform Engineering London

Position Summary Two Sigma is a leading quantitative investment management and trading firm. The company applies a scientific approach to investing, combining cutting‑edge technology, artificial intelligence, data science, and quantitative research with rigorous human inquiry to capitalize on marke ...

Customer Solutions Engineer

About ITRSRecognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our prestigious customer base includes 90% of the world's top investment banks. We are backed by leading private equity investors and are rapidly growing.Our headquarters ...

Customer Solutions Engineer

About ITRSRecognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our prestigious customer base includes 90% of the world's top investment banks. We are backed by leading private equity investors and are rapidly growing.Our headquarters ...

Customer Solutions Engineer

About ITRS Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our prestigious customer base includes 90% of the world's top investment banks. We are backed by leading private equity investors and are rapidly growing. Our headquarters are in S ...

Senior Automation Test Engineer eSC or eDV Required

Introduction At IBM Consulting UK FutureNow, you’ll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors. You’ll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and ...

Senior Automation Test Engineer eSC or eDV Required

Introduction At IBM Consulting UK FutureNow, you’ll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors. You’ll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and ...

Head of Software Engineering

Head of Software Development UK | Hybrid | Permanent A high-growth technology business is looking to appoint a Head of Software Development to lead its engineering function, drive delivery across multiple platforms and play a key role in the wider l ...

Lead Engineer — Global Sports Tech (Remote, Equity)

A global tech sports performance company is recruiting a Lead Engineer to champion quality engineering across multiple squads. You will drive the architectural direction, own high-impact technical delivery, and mentor engineers. The company values a high-trust, ownership-driven environment and offers flexibility ...

Application Security Lead

Application Security Lead Prolific is seeking an experienced security professional to own its application security strategy. The role involves defining and driving a Secure Software Development Lifecycle (SSDLC), embedding security across engineering, and providing hands‑on expertise through code ...

Application Security Lead

Application Security Lead Prolific is seeking an experienced security professional to own its application security strategy. The role involves defining and driving a Secure Software Development Lifecycle (SSDLC), embedding security across engineering, and providing hands‑on expertise through code ...

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 ...

AI Engineer up to £85,000 + Bonus + Benefits Hybrid/London

AI Engineer Salary: Up to £85,000 + BenefitsLocation: Hybrid - 3 days per week onsite in LondonWorking Hours: Full time - Monday to Friday A globally renowned organisation is seeking an AI Engineer to join a high-performing technolo ...

Back End Engineer (any gender)

Company DescriptionInnovative fintech start-up revolutionizing post-trade by centralizing access to clearing and settlement across the UK and EU into a ledger-based single API infrastructure.Job DescriptionWe are seeking a highly skilled back-end engineer with a strong bac ...

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