Lead Software Engineer Python Java Jobs in London, UK

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Founding Principal Engineer: AI Platform for Legal VC

Jack & Jill, a high-velocity Legal AI startup in the UK, seeks a Principal Engineer to lead the architectural evolution of its platform. In this hands-on role, you'll design and deploy production-grade AI solutions, orchestrate LLM workflows, and contribute to a startup culture with substantial equity. The ideal ...

ML Engineer: Agentic Workflows for Developer AI

APPLE in Greater London is seeking a Machine Learning Engineer to join their Insight & Release Technologies team. The role focuses on developing machine learning pipelines, optimizing models, and enhancing developer workflows using AI. The candidate should have experience in ML engineering, strong software funda ...

Lead Building Automation Engineer – UK (Home Based)

Carrier is seeking a Lead Controls Engineer to design advanced building automation systems. The successful candidate will have experience in HVAC controls, proficiency in building automation software, and a strong understanding of complex control systems. You will be responsible for programming, testing, and ens ...

Senior SDET: Quality, Automation & Impact (Remote)

Hudl is seeking a Senior Software Development Engineer in Test (SDET) based in London. In this role, you will lead quality improvements, collaborate with teams across engineering and product, and develop risk-based testing strategies. We're looking for someone with a strong focus on quality, technical testing ex ...

Tech Lead, Ruby on Rails Backend & API (Hybrid)

FRESH. is seeking a Lead Software Engineer specializing in Ruby on Rails for their London office. This full-time, hybrid role involves owning technical decisions, designing scalable backend services, and mentoring engineers. Candidates are expected to have strong experience in production environments and be fami ...

Staff Backend Engineer: Architect Scalable Go Microservices

Xapien is looking for a Staff Backend Engineer in London to lead the technical direction of our backend architecture. You will manage complex backend services with a focus on excellence in Go and contribute to significant technical initiatives. Successful candidates will have over 10 years of software engineerin ...

Senior Data Centre Electrical Engineer — Hybrid, Lead & Impact

WSP in the UK & Ireland is seeking a Senior Electrical Engineer for their London office, working in the Data Centre sector. The ideal candidate will lead the design of electrical systems, support conceptual design development, and provide client advice. Required qualifications include chartered status or relevan ...

Cloud Security Engineer: Zero Trust & SecOps (Hybrid UK)

YunoJuno is looking for a collaborative Security Engineer to protect infrastructure for clean energy. This hybrid position, based in the United Kingdom, requires strong skills in scripting, Infrastructure-as-Code, and cloud security (AWS/GCP). You will integrate security tooling, lead threat assessments, and man ...

Senior Fire Engineer — Lead Innovative Fire Safety in UK

SRS Recruitment Solutions seeks a Senior Fire Engineer based in London to lead innovative fire safety engineering projects. The role involves overseeing fire engineering projects, ensuring compliance with UK regulations, and mentoring junior engineers. Candidates must possess a relevant degree and at least 5 yea ...

Senior QA Engineer: Quality Champion & Automation Lead

Blue Light Card, located in Greater London, is looking for a Senior QA Engineer to help shape quality practices. The ideal candidate will collaborate with agile teams, lead mobile test design, and ensure software quality through both functional and non-functional testing. This role offers hybrid working, a 35-ho ...

Contract Human Factors Engineer – Medical Device UX Lead

Flo Health Inc. is seeking an experienced Human Factors Engineer for a contracting role in Greater London. The successful candidate will lead usability assessments for software as a medical device in women's health, ensuring compliance with IEC 62366-1, ISO 14971, and FDA regulations. Responsibilities include de ...

Senior ML Infrastructure Engineer — Simulation AI

Waymo is looking for a Senior Machine Learning Infrastructure Engineer in Greater London to lead the development of AI/ML infrastructure for large models. This role involves close collaboration with teams at Google DeepMind and Waymo to advance simulation realism and drive technical decisions. The idea ...

Senior Lead: Cloud & API Architecture for Scalable Payments

JPMorgan Chase is seeking a Senior Lead Software Engineer to join the Corporate and Investment Bank Payments Technology team. In this role, you will design and develop scalable coding frameworks and oversee the architectural design of distributed systems in cloud environments. You will leverage your expertise wi ...

Senior Lead React UI Engineer Trader Risk UI

JPMorgan Chase & Co. is seeking a Senior Lead Software Engineer to join their Equities Derivatives and Risk Technology team. The role entails developing trader-facing Risk Management UI using React, enhancing code quality, and mentoring team members. The ideal candidate will possess advanced proficienc ...

Senior Planning Engineer, Water Delivery

Arcadis is seeking a Senior Planning Engineer to lead planning capabilities for major AMP8 water programmes in Greater London. This role requires a strong background in project planning, scheduling, and the ability to manage resources effectively. The ideal candidate will have experience in the water s ...

Senior Lead React UI Engineer Equities Risk Platform

TwinThread is seeking a Senior Lead Software Engineer in Greater London to drive development in Equities Derivatives and Risk Technology. Your role will be pivotal, focusing on building trader-facing Risk Management UIs with React while mentoring team members. The ideal candidate will have advanced pro ...

Head of Software Engineering

Head of Software Engineering – Platform Evolution and Product EngineeringUp to £160,000 per annum plus bonusLondon – Hybrid – 3 days a week in the officeHead of Software Engineering - A well‑established UK tech company with millions of users is look ...

Head of Software Growth

Disguise sits at the heart of the most inspiring live and virtual experiences in the world, leading the market in building a software and hardware solution that designs, sequences and controls the most spectacular productions across film and TV, broadcast, live and corporate events.Role: He ...

Director of Software Engineering

White Collar Factory (95009), United Kingdom, London, LondonDirector of Software Engineering****About this role****We are looking for a Director of Software Engineering to lead a team of 100+ engineers. We’re looking for someone who is results-oriented, able to partner with business leaders and go toe-to-toe wit ...

Growth Architect, Software PLG

A leading technology company in Greater London is searching for a Head of Software Growth to lead their transformation into a software-focused business. The successful candidate will define Ideal Customer Profiles and design high-conversion user journeys, driving user growth and retention for their software ecos ...

Director of Software Engineering

White Collar Factory (95009), United Kingdom, London, Director of Software EngineeringAbout this roleWe are looking for a Director of Software Engineering to lead a team of 100+ engineers. We’re results‑oriented, able to partner with business leaders and go toe‑to‑toe with the b ...

Head of Software Engineering

QA slows the world down. Flaky tests kill trust, stall releases, and bleed engineering velocity.Duku AI is ending that era.We’re building autonomous agents that think like engineers: they run every critical user journey, catch failures before users do, and self-heal as the codebase evolves. ...

Strategy Consultant Software & Platforms

Job DescriptionAccenture is looking for a Strategy Consultant (Software & Platform Industries) based in London.RoleAs a strategy consultant, you will play a key role in driving thought leadership and delivering value to our clients.Responsibilities<br ...

Director of Software Engineering

White Collar Factory (95009), United Kingdom, London, LondonDirector of Software Engineering****About this role****We are looking for a Director of Software Engineering to lead a team of 100+ engineers. We’re looking for someone who is results-oriented, able to partner with business leaders and go toe-to-toe wit ...

Head of Software Engineering

QA slows the world down. Flaky tests kill trust, stall releases, and bleed engineering velocity.Duku AI is ending that era.We’re building autonomous agents that think like engineers: they run every critical user journey, catch failures before users do, and self-heal as the codebase evolves. ...

Head of Software Engineering

Head of Software EngineeringThe organisation seeks an experienced Head of Software Engineering to oversee and enhance critical application and integration systems supporting teaching, research, and operations. The role focuses on ensuring reliable, secure, and scalable digital services acros ...

Director of Software Engineering

White Collar Factory (95009), United Kingdom, LondonAbout this roleWe are looking for a Director of Software Engineering to lead a team of 100+ engineers. We’re results‑oriented, partner with business leaders, and possess technical rigor.You’ll be responsible for all te ...

Head of Software Engineering

Head of Software Engineering – Platform Evolution and Product EngineeringUp to £160,000 per annum plus bonusLondon – Hybrid – 3 days a week in the officeHead of Software Engineering - A well‑established UK tech company with millions of users is look ...

Forward Deployed Engineer

Forward Deployed Engineer London, UK Permanent | Hybrid | 2-3 Days PW £120,000 — £140,000+ Check you match the skill requirements for this role, as well as associated experience, then apply with your CV ...

AI Platform Engineer

AI Platform Engineer - AI & Cloud Platforms Global Banking Organisation Central London, up to £750 per day inside IR35 All the relevant skills, qualifications and experience that a successful applicant will need are listed in the ...

Senior AI Engineer AI Agents (Dubai UAE)

Senior AI Engineer - AI Agents - High Profile AI Scale Up - (relocation to Dubai, UAE) A high number of candidates may make applications for this position, so make sure to send your CV and application through as soon as possible.Our client is building a next-generation digital platform, ...

Junior C# Developer Hedge Fund up to £100k + bonus

Ready to work side-by-side with quants and traders from day one? You’ll be joining an established hedge fund that, unlike many peers who have stayed steady, has spent the last two years aggressively investing in growth - building two brand-new trading platforms from scratch and continuing to scale thei ...

Full Stack Engineer

We’re partnering with an exceptionally exciting early-stage AI startup building workflow automation software for a highly regulated US industry. The business is already generating strong recurring revenue, growing rapidly month-on-month, and is now hiring one of its first UK-based engineers as it sc ...

SRE Team Leader

Job Description Lead an engineering-first culture, embedding reliability into the heart of our IT department! As SRE Team Leader, you'll establish SLOs as foundational principles, leveraging public cloud, containerization, reliability testing, and observability to drive con ...

SRE Team Leader

Job Description Lead an engineering-first culture, embedding reliability into the heart of our IT department! As SRE Team Leader, you'll establish SLOs as foundational principles, leveraging public cloud, containerization, reliability testing, and observability to drive con ...

Software Asset Management Specialist

Software Asset Management SpecialistLength: 12 monthsRate: £675/day to £810/day inside IR35Location: City of London, hybrid working 2-3 days/week in the officeOakleaf Partners ...

Software Asset Management Specialist

Software Asset Management SpecialistLength: 12 monthsRate: £675/day to £810/day inside IR35Location: City of London, hybrid working 2-3 days/week in the officeOakleaf Partners ...

Senior Developer

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Job Description We are looking for a Senior Developer to join our Software Engineering team in London. Thisrole is ideal for a hands-on technologist who enjoys tackling complex business ...

Python Counterparty Credit Risk Senior Developer, Vice President

The Analytical Calculation Engine (ACE) Development Team is a group within Citi Financial Risk Technology, responsible for developing and implementing the applications used for derivatives credit risk and exposure calculations Firm-wide. The team's primary focus is the development, testing, deployment, ...

Python Developer – Front Office R&D Trading Systems

Job Title: Python Developer – Front Office R&D Trading Systems Location: London, UK Employment Type: Permanent or Contract About Margo MARGO is a tech-native consultancy delivering high-value-added IT expertise to the financial services industry. We ...

Senior Trader & Portfolio Manager — Intra day, Python Driven

A leading trading recruitment firm is seeking an Experienced Trader / Portfolio Manager to join their partners in London. This role offers a competitive salary ranging from £100,000 to £150,000 gross per annum, along with the opportunity to set up new trading teams or join existing desks. The ideal candidate sho ...

Quantum Research Scientist (Python) Part Time, Project Based

A project-based AI opportunity platform is seeking quantum researchers experienced in Python for part-time contributions on unique computational physics projects. Responsibilities include designing problems simulating real research workflows, ensuring computationally intensive tasks, and documenting solutions cl ...

Quantum Research Scientist with Python / Freelance AI Trainer

Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment. What This Opportunity Involves While each project involves unique tasks ...

Front Office Quant: Equity Derivatives & Volatility (C++/Python)

A leading hedge fund in London is seeking a Quantitative Analyst focused on equity derivatives and volatility modeling. The ideal candidate will build and maintain pricing models directly utilized by traders. Responsibilities include developing C++ models, using Python for analysis, and supporting trading strate ...

Senior Quantitative Analyst: Python Driven Fixed Income & Risk

Legal And General Group is seeking a Senior Quantitative Analyst to enhance their Investments Quantitative team in Greater London. You will develop financial models in Python, support investment teams, and ensure compliance with model governance. Ideal candidates possess strong programming skills, a degree in a ...

Senior Full Stack Developer (Python) Networks, Vice President

Job Description Networks as a Service (NAAS) is seeking a highly skilled senior level developer with network infrastructure experience to join our development team. Your goal is to deliver products to our global network team, assisting with the transformation to an automated network and network s ...

Pricing Data Scientist Python for GI/Personal Lines

Arthur Financial, an innovative personal lines insurer in Greater London, is seeking a Modelling Specialist / Pricing Data Scientist to elevate their modelling capabilities. The role involves building and testing pricing models, integrating third-party data, and peer code reviews. Ideal candidates will have stro ...

Backend Platform Architect for AI Systems (Python) + Equity

SR2 | Socially Responsible Recruitment | Certified B Corporation™ is seeking a Senior Backend Engineer in London to design and build robust backend systems using Python. You will work with a high-calibre startup developing an agentic AI product, focusing on infrastructure and tooling. Responsibilities include de ...

Hybrid Data Analyst R/Python | Stats & Data Quality

A prominent UK brand is seeking a self-motivated Technical Data Analyst to conduct detailed analyses of large datasets. This hybrid role requires you to be in the London office twice a month. Candidates should have strong coding abilities in R and Python, along with experience in statistical software like SPSS. ...

Head of Engineering – Scaleup (London/AWS, Go & Python)

A fintech talent acquisition agency is seeking a Head of Engineering to lead a team of backend engineers in a hybrid working environment. The ideal candidate will have over 9 years of backend engineering experience, with 6+ years in leadership. Responsibilities include mentoring engineers, implementing operation ...

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