Lead Software Engineer Python Java Jobs in London, UK

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Technical Lead Hybrid London: Cloud, APIs & Commerce

La Fosse is seeking a Technical Lead for a hybrid role based in London. The ideal candidate will have a strong background in software development and architecture, demonstrating expertise in .NET, Python, and cloud platforms such as AWS, Azure, or GCP. Responsibilities include driving technical direction, integr ...

Data Engineering Senior Consultant in London

Senior Consultant – Data Engineering As a senior consultant in the Business Transformation team, you will design and deliver data solutions using modern cloud-based platforms and advise clients on their data landscape, shaping data strategies and roadmaps. Key Responsibilities ...

Principal Software Engineer UK Security Clearance eligibility required.

Principal Software Engineer - UK Security Clearance eligibility required. Location: London, UK (Hybrid ~1 day per week in office / onsite)Contract: Permanent, Full-timePackage: £80,000-90,000 + 10% bonus + 10% shares options + benefitsAbout AppviaAt Appvia, we help organi ...

Principal Software Engineer UK Security Clearance eligibility required.

Principal Software Engineer - UK Security Clearance eligibility required. Location: London, UK (Hybrid ~1 day per week in office / onsite)Contract: Permanent, Full-timePackage: £80,000-90,000 + 10% bonus + 10% shares options + benefitsAbout AppviaAt Appvia, we help organi ...

Sr. Security Engineer, Amazon Stores Security AppSec

DescriptionAt Amazon, security is central to maintaining customer trust and delivering delightful customer experiences. Our organization is responsible for creating and maintaining a high bar for security across all of Amazon’s products and services. We offer talented security professionals the chance to acc ...

Full Stack Engineer

Looking to join a company when you can make a real impact? Do you have 3+ years commercial experience developing software with Java & JavaScript? ...

Java Programmer Required in Germany Without IELTS

Job highlightsDegree in Computer Science or related field with experience in user interface design and database structuresDesign and implement Java-based applications, analyze user requirements, define application objectives, and align design with business goals<st ...

Java Programmer Required in Germany Without IELTS

Job highlightsDegree in Computer Science or related field with experience in user interface design and database structuresDesign and implement Java-based applications, analyze user requirements, define application objectives, and align design with business goals<st ...

Embedded Systems Engineer

Location: London, UK (Hybrid / On-site)Type: Full-timeSalary: £45,000–£65,000 + Equity Options (DOE) The Role We are looking for an Embedded Systems Engineer who thrives at the intersection of hardware and software. You’ll take ownership of the design, imple ...

Sr. Full Stack Lead Developer

At Broadridge, we've built a culture where the highest goal is to empower others to accomplish more. If you’re passionate about developing your career, while helping others along the way, come join the Broadridge team.We are excited to announce an opportunity for a Senior Lead Developer to join our org ...

Sr. Full Stack Lead Developer

At Broadridge, we've built a culture where the highest goal is to empower others to accomplish more. If you’re passionate about developing your career, while helping others along the way, come join the Broadridge team.We are excited to announce an opportunity for a Senior Lead Developer to join our org ...

Senior Solutions Engineer EMEA

About The Job LaunchDarkly is in the middle of a category shift - from feature management to the AI control plane: the governance layer between AI-generated code and safe production deployment. Every enterprise we talk to has the same problem - their engineers are shipping AI-assisted code faster ...

AI Engineer Up to £100k Base Salary + Bonus

AI Engineer – Up to £100k Base Salary + Bonus (London) Ready to move beyond hype and actually ship cutting-edge AI? My client are looking for an AI Engineer to join their London-based team and design next-generation intelligent systems powered b ...

Senior Network Specialist

Director and Head of FinTech at Quant Capital Consulting Senior Network Engineer – Low latency trading Quant Capital is urgently looking for talented Network Engineers to join a top-tier HFT in their London office. This role suits a seasoned ...

ML Engineer — Production Scale, Real Time Rewards

A fast-growing tech company in the UK seeks a Machine Learning Engineer to lead the delivery of impactful ML solutions. The ideal candidate will have a strong background in statistics and programming, specifically in Python and SQL. This role requires technical leadership capabilities and effective communication ...

Lead ML Engineer Build Responsible AI (Hybrid)

A leading AI company in the United Kingdom is seeking a Lead Machine Learning Engineer to drive complex AI projects. The role focuses on technical leadership, system design, and team management. Ideal candidates are experts in Python, cloud solutions, and can balance innovation with risk management. Competitive ...

Senior Machine Learning Engineer & Technical Leader Hybrid

A leading AI technology company in Greater London seeks a Lead Machine Learning Engineer to spearhead complex AI projects. You will set the technical direction, manage high-risk environments, and mentor engineers. Ideal candidates have strong Python skills, experience with major cloud solutions, and a passion fo ...

Lead Frontend & Product Engineer — Climate Tech

A climate-tech company is seeking a Lead Product Engineer with strong frontend focus and full-stack capability. The role involves defining frontend architecture, building user-friendly features, and collaborating with teams to shape product direction. Candidates should have extensive experience with React, Pytho ...

Remote Senior Backend Architect (Multitenancy & IAM)

A tech learning company seeks a Senior Backend Engineer to lead the development of scalable multitenant infrastructure. The role emphasizes strong architectural principles, expertise in statically typed languages, and readiness to master Python 3.x. Enjoy a fully remote, flexible work environment with competitiv ...

Senior Backend Engineer – Customer Auth (Fintech)

Funding Circle UK is looking for a Senior Engineer – Customer Auth to lead the development of security and identity platforms. You will create and maintain authentication systems while mentoring junior engineers. Ideal candidates have expertise in Python, distributed systems, and technologies like AWS and Kubern ...

Senior AWS Platform Engineer Data & Pipelines

Vallum Associates is seeking a Senior Platform Engineer (AWS) to lead a major project in London. This hybrid role involves designing AWS platform architecture, delivering infrastructure solutions, and ensuring effective data migration. The ideal candidate will have strong hands-on experience with Terraform, CI/C ...

Automation Engineer: AI Driven Internal Tools & Workflows

A leading cybersecurity firm in Greater London is seeking an Automation Engineer to lead the development of internal tools and AI-powered workflows. You will design scalable technical solutions, collaborate with engineering and operational teams, and improve efficiency across the organization. The role demands s ...

Mission Critical ML Engineer (Hybrid)

MI6 is seeking a Machine Learning Engineer in Greater London to lead initiatives in AI for national security. The role involves designing and deploying ML models, collaborating with multidisciplinary teams, and mentoring junior engineers. The ideal candidate has experience in model lifecycle management, MLOps to ...

Senior Application Security Engineer — Build Secure SDLC & Guardrails

An innovative Ed-Tech company in Greater London is seeking an experienced Security Engineer to own application and product security. You will partner with engineering teams, lead threat modeling, and enhance secure development processes. The ideal candidate should have strong experience in Python/Django and a so ...

Senior Python Engineer (6 Month Contract) in London Funding Circle UK

Senior Python Engineer (6 Month Contract) London, United Kingdom Posted 9 months ago Responsibilities Senior Python Engineer to support an interesting project on a six‑month contract. The ideal candidate is able to ramp up quickly and get stuck in with the team. <h3 ...

Senior Python Engineer AI/ML Backend (London, 1x/week on site)

IT Recruitment Solutions is seeking a Senior Python Engineer in London to develop scalable AI systems. Ideal candidates have over 6 years in production Python environments with recent experience in integrating large language models. Responsibilities include designing backend services, optimizing performance, and ...

Full Stack AI Engineer (Python, TypeScript) London Hybrid up to £115k

Oliver Bernard are partnered with a high-growth tech business investing heavily into AI automation, internal tooling, and agentic systems across the company. They’re now hiring an AI Engineer to help build the next generation of production-ready AI applications. This is a chance to join a small, hi ...

Experienced IT Recruitment Consultant DACH & Poland Focus

Experienced IT Recruitment Consultant - DACH & Poland FocusLocation: London Role Type: 360° Billing Target Markets: DACH Region (Germany, Austria, Switzerland) & Poland Specialisation: Software Development RecruitmentAbout Us ...

Experienced IT Recruitment Consultant DACH & Poland Focus

Experienced IT Recruitment Consultant - DACH & Poland FocusLocation: London Role Type: 360° Billing Target Markets: DACH Region (Germany, Austria, Switzerland) & Poland Specialisation: Software Development RecruitmentAbout Us ...

Lead Machine Learning Engineer, Associate Director

Select how often (in days) to receive an alert: Lead Machine Learning Engineer, Associate Director (London) Requisition ID: 50006 Business Unit: Fitch Group Category: Information Technology Location: London, GB Date Posted: May 14, 2026 The Fitch Gr ...

Senior Lead Full Stack Engineer Cybersecurity Solutions

A leading global financial services firm in London seeks a Senior Lead Full Stack Software Engineer to drive software solutions within cybersecurity. In this role, you will lead design and implementation, mentor junior developers, and ensure high-quality user experiences. The ideal candidate has 7+ years in soft ...

Equities Trading System Engineer

Overview Join us as Equity Trading System Engineer where you will be supporting the Bank’s Equity Derivatives technology stack. The role is within the Global Equity Derivatives Application Management team and is based on the London trading floor. Responsibilities Run-the-bank ...

L2 Support Engineer in London N Consulting Ltd

L2 Support Engineer London, United Kingdom Tech stack Splunk Java Required Core Skills Java DB Nice to have skills Splunk Areas of responsibility Excellent communicat ...

Java Developer FIXED INCOME (Java, FIX, SQL) Capital Markets Start ASAP Hybrid London

Java Developer - FIXED INCOME (Java, FIX, SQL)- Capital Markets - Start ASAP - Hybrid - London I’m looking for a Java Developer to work Hybrid onsite/offsite with a Bank in London. Essential skills are: Java, SQL, Fixed Income, FIX Protocol. 8+ years of experience in Capital Markets ...

Full Stack Engineer

Full Stack Engineer - Permanent - Multiple hires Location: UK Wide - London office attendance a few times a month - Primarily Remote Clearance: Candidates must be eligible for SC Clearance, have 5 years UK residency, and the correct right to work status in the ...

Full Stack Engineer

Full Stack Engineer - Permanent - Multiple hires Location: UK Wide - London office attendance a few times a month - Primarily Remote Clearance: Candidates must be eligible for SC Clearance, have 5 years UK residency, and the correct right to work status in the ...

Full Stack Engineer

Full Stack Engineer - Permanent - Multiple hires Location: UK Wide - London office attendance a few times a month - Primarily Remote Clearance: Candidates must be eligible for SC Clearance, have 5 years UK residency, and the correct right to work status in the ...

Full Stack Engineer

Full Stack Engineer - Permanent - Multiple hires Location: UK Wide - London office attendance a few times a month - Primarily Remote Clearance: Candidates must be eligible for SC Clearance, have 5 years UK residency, and the corre ...

Founding AI Engineer (£100k–150k + Equity) at Pharosyn

Job Title: Founding AI Engineer Salary: £100k–150k + Equity Company Description: Pharosyn - EF-backed AI startup for pharma Job Description: Join Pharosyn as a founding engineer to automate competitive intelligence in the pharma and biotech industries ...

Senior Frontend Developer

A fast-scaling, AI-enabled property technology business is hiring a Front End Engineer to help build the next generation of products powering a rapidly growing platform. Backed by significant funding and scaling quickly through acquisition and technology, the business is using ...

Java Developer – Front Office / Trading Systems

Java Developer – Front Office / Trading Systems Join MARGO in the UK (London) – Perm & Contracting Opportunity* MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry. We specialise in complex software engineeri ...

Senior Research Engineer

Flow Traders is looking for a Senior Research Engineer to join us in our London office. This is a unique opportunity to join a leading proprietary trading firm with an entrepreneurial and innovative culture at the heart of its business. We value quick-witted, creative minds and challenge them to make full ...

Full Stack Engineer

Full Stack Software Engineer | London | £60,000 - £73,000 + equity | Python | Vue.js | AI Product Location: London based, hybrid (1 day per week) The information below covers the role requirements, expected candidate experience, and accompanying qualificat ...

Data Engineer, Strategic Account Services

DescriptionWhat is the Amazon Marketplace?Amazon is the largest marketplace on earth. Millions of customers shop in Amazon’s marketplaces globally. Every day, customers browse, purchase, and review products sold by third-party (3P) sellers right alongside products sold by Amazon. Since 2000, Amazon welco ...

Lead Full Stack Web Developer Hedge Fund

We are looking for an experienced Lead Full-Stack Web Developer to join an established Hedge Fund. You will be hands-on and involved throughout the entire software lifecycle; design, deployments and continuous improvement whilst leading a small global team. Requirements: </ ...

Senior Platform Engineer

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading ...

Senior Platform Engineer

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading ...

AI Engineer Up to £100k Base Salary + Bonus

AI Engineer – Up to £100k Base Salary + Bonus (London) Ready to move beyond hype and actually ship cutting-edge AI? My client are looking for an AI Engineer to join their London-based team and design next-generation intelligent systems powered b ...

Product Engineer

We’re partnered with a fast-growing, AI-native B2B SaaS start-up helping enterprise companies personalise marketing and sales experiences at scale through AI-powered automation and data products. Following strong growth and investment, they’re now looking to expand their engineering team with multiple Prod ...

Senior Trading Systems Engineer — End to End Trade Stack

OCR Alpha is seeking a Senior Trading Systems Developer to lead the technological framework in their London office. This role requires strong proficiency in C# and/or Python and a minimum of 5 years in software development with a clear ownership trajectory. You will work directly with traders, managing the entir ...

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