Lead Software Engineer Python Java Jobs in London, UK

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Mid level Software Engineer — Graphics & Platform

Who we are, what we do Sensat is a geospatial AI business that powers advanced and highly functional digital twins for the world's most critical infrastructure projects. We partner with the world's largest construction, engineering and critical infrastructure companies, including National ...

Software Engineer — Government‑Tech, TDD & Pairing

Opencast | B Corp™ is looking for a Software Developer in Greater London. This role emphasizes building software with engineering craft and collaboration. Candidates should have expertise in Java or Scala, and hold or be eligible for SC Clearance. Responsibilities include collaborating on testing efforts, implem ...

C++ Software Engineer Relocation to Amsterdam

C++ Software Engineer | Proprietary Trading | Amsterdam Elevate Partners are partnered with a global leading prop trading firm currently seeking experienced C++ Software Engineers to join their high-performing technology team in Amsterdam. Technology sits at the core of the business ...

Senior Medical Device Software Quality Engineer

Hlx Life Sciences is seeking a Senior Software Quality Engineer in Greater London. This role involves leading IEC 62304-compliant quality practices, enhancing CI/CD pipelines, and driving systems-level automation within a dedicated engineering environment. The ideal candidate should hold 5–8 years of experience ...

Software Test Integration and Automation Engineer

Job Description As a Software Test Integration and Automation Engineer you will join our team in London and will be responsible for the reliability, scalability, and evolution of a modern CI/CD ecosystem and containerised runtime environment. The position sits at the crossroads of ...

Software Engineer (Vice President, Finance Engineering)

Requirements You should have a strong background in software development, expert level knowledge of SQL, and a good understanding of crypto trading You should have the ability to work independently, have strong analytical and problem-solving skills, with a desire to own issues and ...

Senior Software Development Engineer in Test

Hackajob is collaborating with Holland & Barrett to connect them with exceptional professionals for this role. About H&B Holland & Barrett International strives to be the world's leading health and wellness business. Currently the largest in Europe and growing in other markets, the health ...

Software Engineer (Signal Processing and AI)

Requirements Experience in C++ development Experience in multi-threaded design Experience in signal processing and/or AI/ML techniques Experience of UML design techniques Experience knowledge of the full software development lifecycle Machin ...

Graduate Software Engineer Trading Tech (London)

SIG Susquehanna in Greater London is seeking talented Software Development Graduates to start in September 2026. You'll work closely with senior technologists, gaining hands-on experience and mentorship. The ideal candidate must have strong development skills in languages like C#, C++, or Python, be an effective ...

Senior AI Software Engineer (Internal Automations)

Requirements 4+ years of software engineering experience Strong full-stack skills in Python or TypeScript Experience shipping containerised software to Kubernetes Proven experience building AI tooling used by others in a commercial environment Comfort ...

Microsoft Dynamics365 F&O Software Engineer

Microsoft Dynamics 365 F&O Software Engineer - Senior Consultant Salary: £70,000 - £80,000 pa + benefits, perks and healthcare options Job Type: Permanent - Hybrid Locations: London, Manchester, Glasgow, Woking, Birmingham, Newcastle, Telford, Liverpool Overview ...

Senior Backend Software Engineer (Backend, Go)

Requirements You’re degree level educated in computer science or related discipline or you’re able to demonstrate equivalent workplace experience You’re an organised and adaptable team player with a track record with helping to define and delivering Tech Strategy You’re ...

Staff Software Engineer (Privacy & Data Security)

At Vanta, our mission is to help businesses earn and prove trust. We believe that security should be monitored and verified continuously, and we empower companies to practice better security and prove it with ease. Vanta has a kind and talented team, and while some have prior security experience, many have ...

Hybrid London Junior Software Engineer (DevOps)

Spectrum IT Recruitment is seeking a Graduate / Junior Software Engineer for a hybrid role based in London. This opportunity is perfect for early-career candidates looking to gain hands-on experience in a modern infrastructure stack. Responsibilities include automating DevOps workflows, monitoring systems, and c ...

Senior Fullstack Software Engineer, Signals Team

Senior Fullstack Software Engineer (Signals Team) Location: London, UK / Lisbon, Portugal (Hybrid / Remote options available) Department: Engineering Reports To: Engineering Manager Job Type: Full-Time About the Role We are looking for a Senior Fullstack ...

Graduate Software Engineer & AI Advisory Consultant

Softwire is looking for a Graduate Consultant Software Engineer in Greater London. This permanent role blends high-level software engineering with client advisory, helping clients transform their businesses through innovative AI-driven solutions. The graduate program includes extensive training and a clear caree ...

AIML Software Engineer, AI for Science

Site Name: London The Stanley Building, Switzerland - Zug Posted Date: May 7 2026 About the Role To strengthen our AI for Science (AI4S) team, we are looking for Software Engineers with a track record in developing production-grade, data-driven software solutions. You will drive t ...

Senior Software Engineer, Growth & Payments Platform

GoCardless in Greater London is looking for an engineer to join their Payment Intelligence team. You'll work on innovative projects aimed at enhancing bank payment products and driving revenue growth. The ideal candidate will have a growth mindset, the ability to adapt quickly to new technologies, and thrive in ...

Staff Software Engineer, FinTech — Credit & Underwriting

Ebury is seeking a Staff Software Engineer in Greater London. This key role involves leading technical design for critical financial systems and mentoring engineers. Ideal candidates will have a strong technical foundation in computer science, with extensive experience in fintech and building scalable systems. E ...

Senior Backend Software Engineer (Backend, Go)

Who We Are Arenko is an Energy Tech company using advanced software to optimise energy storage, making electricity grids more flexible, reliable, and zero‑carbon. Our platform enables grid operators (such as National Grid in the UK) and asset owners to maximise efficiency and revenue in an evolvi ...

Principal Software Engineer Fintech (C#/.NET)

Peaple Talent is seeking a Principal Software Engineer to join a fast-growing UK fintech in London. This role involves shaping the technical direction of a scalable technology platform and leading engineering initiatives. The ideal candidate will have over 5 years of experience, strong commercial expertise in C# ...

Software Engineer Manager, Apple Online Store

Summary At Apple, we rely on our employees’ diverse backgrounds and perspectives to foster innovation through great ideas to surprise and delight our customers. And great ideas can come from anywhere. Will that next great idea come from you? At the Apple Online Store (AOS), its Engineerin ...

IT Software Engineer Senior Manager INFOex

Who We Are Boston Consulting Group partners with leaders in business and society to tackle their most important challenges and capture their greatest opportunities. BCG was the pioneer in business strategy when it was founded in 1963. Today, we help clients with total transformation‑inspiring com ...

Software Engineer Manager, Apple Online Store

Overview London, England, United Kingdom Software and Services At Apple, we rely on our employees’ diverse backgrounds and perspectives to foster innovation through great ideas to surprise and delight our customers. And great ideas can come from anywhere. Will that next great idea come from ...

Senior Software Engineer, Payments & BNPL Platform

Super Payments in Greater London is looking for an experienced software engineer with at least 8 years in the field, especially in financial services or eCommerce. The role involves spearheading the B2B API design and collaborating with product teams, utilizing technologies such as Node.js, TypeScript, and AWS. ...

Graphics & Geospatial Software Engineer (WebGL/3D)

Sensat, based in Greater London, is looking for a software engineer passionate about graphics and geospatial technology. This hybrid role involves processing large-scale datasets, developing rendering functionality, and contributing to both backend and frontend aspects of the SaaS platform. Candidates should hav ...

Backend Senior Software Engineer Customer Lifecycle

Backend Senior Software Engineer - Customer Lifecycle Full-time Employment Status: Full-Time Hi! We're UW. We’re on a mission to take the headache out of utilities by providing them all in one place. One bill for energy, broadband, mobile and insurance and ...

Software Engineer III, Search, Mobile (Android)

Minimum qualifications Bachelor’s degree or equivalent practical experience. 2 years of experience with software development in one or more programming languages, or 1 year of experience with an advanced degree. 2 years of experience with Android application development. ...

Software Engineer Darwin Server, Core OS

London, England, United Kingdom Software and Services The Darwin Server team in Core OS is looking for enthusiastic engineers interested in developing system software for Apple’s operating systems. Darwin is the UNIX-like foundation at the heart of all Apple’s operating systems, stretching from the ...

Consultant Software Engineer — AI & Strategy Partner

Softwire in Greater London is looking for a Consultant Software Engineer for career switchers and returners. This role blends high-level software engineering with client advisory, helping transform businesses through AI-driven solutions. The position offers a starting salary of £45,000, along with profit-sharing ...

Senior Software Engineer – Liquidity & Treasury Platforms

hackajob is seeking a Senior Engineer in Greater London to join the Treasury team. This position focuses on driving data-driven growth strategies, mentoring junior engineers, and collaborating on innovative liquidity management solutions. The ideal candidate will have expertise in Java, Spring Boot, and a strong ...

Senior Algo Trading Software Engineer (VP)

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, give back to your community and make a real impact. Job Overview Engineer the future of ...

Rust Software Engineer Trading Infrastructure (London)

Paragon Alpha - Hedge Fund Talent Business is looking for a Software Engineer to join their team in London. The successful candidate will have experience in Rust and will play a key role in supporting the development of critical trading infrastructure across various asset classes. This position includes collabor ...

Staff Software Engineer (Short Term Credit)

We’re on a mission to back the UK’s small businesses like no one else. Small businesses are the backbone of the economy, and we’re here to help them win. We’ve built a platform that uses clever data to get them the funding they need in minutes, not weeks. At Funding Circle, we have the rest ...

Senior Software Engineer, Search, Mobile (Android)

Minimum Qualifications Bachelor’s degree or equivalent practical experience. 5 years of experience with software development in one or more programming languages. 3 years of experience testing, maintaining, or launching software products, and 1 year of experience with la ...

Staff Software Engineer Edge Compute Platform

Fastly is seeking a Staff Software Engineer for its Compute Platform in Greater London. This role demands at least 7 years of software development experience, especially in high-reliability systems, and proficiency in Rust. Key responsibilities include coordinating with cross-functional teams, managing projects, ...

Staff Software Engineer (Engine by Starling)

Requirements Delivering change to critical systems in a distributed environment Be a highly proficient developer, maintaining a high standard for technical and coding excellence in the collective, through your own work Good understanding of DevOps practices Deliveri ...

Staff Software Engineer, AI — LLM Systems

Cerebras is seeking a Staff Software Engineer (AI) in Greater London to design and build production-grade agentic AI systems. The role involves collaborating with cross-functional teams and requires strong expertise in Python and cloud development, particularly on AWS. Successful candidates will influence techni ...

Application Software Engineer Relocation to Tokyo

At Wayve we're committed to creating a diverse, fair and respectful culture that is inclusive of everyone based on their unique skills and perspectives, and regardless of sex, race, religion or belief, ethnic or national origin, disability, age, citizenship, marital, domestic or civil partnership status, s ...

Microsoft Dynamics365 F&O Software Engineer

Microsoft Dynamics 365 F&O Software Engineer - Senior Consultant Salary: £70,000 - £80,000 pa + benefits, perks and healthcare options Job Type: Permanent - Hybrid Locations: London, Manchester, Glasgow, Woking, Birmingham, Newcastle, Telford, Liverpo ...

FPGA Software Engineer | Systematic Hedge Fund

Paragon Alpha are partnered with a leading $50 Billion Systematic Hedge Fund who have seen exponential growth over the 2020s. As part of their continued London expansion, they are hiring a FPGA Software Engineer to support their infrastructure buildout. You will be essential to develo ...

Low Latency E Trading Software Engineer

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, give back to your community and make a real impact. Overv ...

Graphics & Geospatial Software Engineer (WebGL/3D)

Sensat, a geospatial AI company based in Greater London, is looking for a Software Engineer passionate about graphics and geospatial technology. The role involves improving pipelines for geospatial datasets, contributing to various aspects of the SaaS platform, and collaborating with cross-functional teams. Cand ...

Senior Unity Software Engineer — Customer Collaboration

A leading game engine company is seeking a Senior Software Engineer to collaborate with clients in developing video games and optimizing performance. You will oversee customer projects, assist with technical challenges, and maintain communication with internal teams. The ideal candidate should have a strong expe ...

Software Engineer Data Pipelines & Microservices (Music)

Sony Music Entertainment is seeking a Software Engineer for the D2C team in London. The role involves building products that support artists and labels globally. Candidates should have strong experience with distributed systems, data pipeline development, and various data technologies like Neo4j and AWS. The com ...

Full Stack Software Engineer, Mobile Apps

About Us At Hiya, we're making calls safe, useful, and human again. Voice is the most human form of communication, yet it's become one of the least trusted. Spam, scams, and AI manipulation have eroded what was once a simple way to connect. Hiya is changing that. Each month our AI ...

Software Test Integration and Automation Engineer

Software Test Integration and Automation Engineer Full-time Contract Type: Permanent Region: London ALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sect ...

Staff Software Engineer, Games, Inception, DeepMind

Staff Software Engineer, Games, Inception, DeepMind DeepMind London, UK Bachelor’s degree in Computer Science, Mathematics, or equivalent practical experience. Experience leading technical strategy across multi-disciplinary teams (e.g., Research, Product, Design) to align ...

Staff Software Engineer AI Driven Games

A leading technology firm in London is seeking a Staff Software Engineer to work within the Inception team at DeepMind. The role involves integrating generative AI into gaming experiences, leading technical strategies, and collaborating with multi-disciplinary teams. Candidates should have a Bachelor's degree in ...

Full Stack Software Engineer (Mobile Apps)

About Us At Hiya, we're making calls safe, useful, and human again. Voice is the most human form of communication, yet it's become one of the least trusted. Spam, scams, and AI manipulation have eroded what was once a simple way to connect. Hiya is changing that. Each month our AI ...

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    Lead Software Engineer Python Java Jobs in London Job Search Guide, Trends and Insights