1,536,244+ Full Stack Java Developer Python Jobs in UK — Top Companies Hiring June 2026

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Lead Scientific Software Engineer (C++/Python) Hybrid

Mars Recruitment is seeking a Lead Software Engineer specializing in C++ and Python to join their team in Oxfordshire. This hybrid role involves mentoring and technically leading Software Engineers and collaborating within cross-functional teams. The ideal candidate will possess a degree in Software En ...

Senior Python Software Engineer Cloud & AI Tools

Clearwater Analytics, Ltd. is seeking a skilled Senior Software Engineer to join the Beacon Core Engineering team. This role involves designing, building, and maintaining high-quality code while collaborating with cross-functional teams. The ideal candidate has over 5 years of experience in software de ...

Senior Automation Tester

Job title: Senior Automation TesterLocation: London, UKJob type: Contract- Hybrid 2 days onsiteDay Rate - 250 GBP/Day <s ...

Senior Software Engineer I Account Communications

Team you’ll be working in Account Communications Role Overview We are looking for a Backend Engineer to join the Account Communications team. We own the platform that delivers millions of customer communications every day — emails, push notifications, in‑app messages, and more. ...

Site Reliability Engineer

Key Responsibilities Monitor system performance data and receive alerts through monitoring tools, identify abnormal indicators, recognize system risks, and notify relevant colleagues to resolve issues. Perform emergency system recovery, execute related contingency plans, and minim ...

Junior Developer (PHP / Laravel)

We are looking for a junior developer with Laravel experience to support the ongoing development of our internal systems and customer-facing platforms. You will be working across a range of live applications used throughout the business, contributing to improvements, resolving issues, and deliverin ...

Infrastructure Engineer Development

Infrastructure Development Engineer Southampton Hybrid Working Up to £65,000 + 20% Bonus + Equity + Benefits Most infrastructure roles focus on one area. This one doesn't. You'll be involved in everything from Linux servers, automation and CI/CD through to containerisation, monitoring, networking and the wider ...

Data Scientist Leading Consumer Fintech

Do you want to build ML models that directly drive real customer and lending decisions? Have you worked on customer prediction problems like pricing, forecasting, or segmentation? Are you ready to join a fast-paced fintech where Data Science sits at the core of the business? < ...

Senior Software Engineer

Enterprise Recruitment Ltd provided pay range This range is provided by Enterprise Recruitment Ltd. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range A company at the forefront of developing intricate scientific system ...

Data Scientist Leading Consumer Fintech

Do you want to build ML models that directly drive real customer and lending decisions? Have you worked on customer prediction problems like pricing, forecasting, or segmentation? Are you ready to join a fast-paced fintech where Data Science sits at the core of the business? < ...

Staff Platform Engineer

At Focused, we move quickly to deliver quality software that achieves client outcomes and meets their customer’s needs. We strategically partner with our clients to leverage our expertise in design and software, while our clients bring their own domain expertise. We work with a variety of clients from diff ...

Senior Fullstack Engineer (Typescript) – LegalTech

Our partner is transforming the legal industry by making high-quality legal support accessible to everyone. Through a combination of regulated human lawyers and proprietary AI, they’re reimagining how legal services are delivered—faster, cheaper, and more equitably.Their groundbreaking AI legal assistant i ...

Lead Software Engineer

Lead Software Engineer GBV Ltd Staffordshire, England, United Kingdom This range is provided by GBV Ltd. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. I have a need for a Lead Developer on a remote-first basis for my client b ...

Principal Software Engineer

Principal Platform Engineer FULLY REMOTE ACROSS UK AND IRELAND Our client is a fast-scaling fintech building the next generation of payment infrastructure. They're merchant-first, engineering-led, and genuinely obsessive about outcomes over process. Small teams, real autonomy, hard problem ...

Staff Research Engineer (LLM Pre Training)

At JetBrains, code is our passion. Ever since we started back in 2000, we have been striving to make the world’s most robust and effective developer tools. By automating routine checks and corrections, our tools speed up production, freeing developers to grow, discover, and create. We are working o ...

AI Engineer up to £80,000 + Bonus + Benefits Belfast/Hybrid

Generative AI Engineer (LLMs / Python) Salary: Up to £80,000 + Bonus + Benefits Location: Belfast - Hybrid Working Hours: 40 hours per week - Full time Job Type: Permanent A globally established or ...

Senior Software Engineer (Contract)

Overview We are GlobalLogic, an international digital engineering leader. We are hiring an experienced Contract Software Engineer / AI Platform Software Engineer for a 12‑month assignment (inside IR35) beginning in 2‑4 weeks. The role focuses on AI governance, distributed systems, observability, ...

Senior Software Engineer

Job Title: Software Engineer Type: Permanent Location: Farnborough, UK Clearance: SC Cleared Role Overview: Are you passionate about building scalable software solutions and working with modern technologies in a collaborativ ...

Staff Security Engineer, Product Security

About the Team Product Security at Chainalysis keeps our SaaS platform — used by governments, banks, and crypto exchanges to investigate financial crime — secure by design. We partner directly with product and platform engineering on threat modeling, design reviews, penetration testing, a ...

Senior/Principal Software Engineer

Overview This role requires applicants to hold active, or recently active, SC or DV clearance, and to be willing to work on-site up to 4 days per week. At Gemba Advantage, we build secure, user-centred digital products for critical public sector organisations across the UK. Our teams work on compl ...

Engineering Research Assistant

Overview Lead Recruiter at Russell Tobin UK/Ireland/Netherlands Contract 4 months contract / Hybrid 3 days in office / London / Rate Paye Inside IR - 53 per hour Role Research assistant with 2+ years of experience prototyping and testing AI agents and/or LLM ...

Software Engineer Android Developer

Software Engineer Android Defence / MOD Contract or Permanent £500pd or £70k Cheltenham - 5 days a week + 1 day/week Herefordshire (for client visits) Security Clearance : It is an essential requirement for candidates to obtain UK Security Clearance (SC Level) prior to appointment. Ever built Android apps ...

Lead Software Engineer AI/ML Data Platforms AI Engineer Python

We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorgan Chase within the AI/ML Data Platforms business, you are an integral part of a team that works to enhance, build, and deliver trusted market- ...

Senior Developer Insolvency Service SEO

Location Birmingham, Cardiff, Edinburgh, Exeter, Ipswich, Leeds, Manchester, Newcastle and Nottingham. (Croydon and Stratford will only be available to existing employees of the Insolvency Service). About the job Job summary The Insolvency Service is a leading government agency which plays a crucial r ...

Senior DevOps Engineer: Elite CI/CD & Cloud Automation

Requirements and Qualifications: Graduate/post‑graduate degree in Computer Science or related field The desire to work in a fast‑paced environment. Ability to coach junior team members and self‑manage. Knowledge of Software Development Life Cycle (SDLC). ...

Senior Backend Software Engineer (UK)

JoinPigment: The AI Platform Redefining Business Planning Pigment is the AI‑powered business planning and performance management platform built for agility and scale. We connect people, data, and processes in one intuitive, feature‑rich solution, empowering every team—from Finance to HR—to ...

Deployed Software Engineer

About the Role We work closely alongside our customers to deploy our technology. As a Deployed Software Engineer at Arondite, you'll be responsible for implementing our technology with customers so that it effectively solves their real-world problems. You'll collect feedback from end users and wo ...

Data Platform Engineer

Hybrid Working We have a Hybrid approach to working here at Starling – our preference is that you’re located within a commutable distance of one of our offices so that we can interact and collaborate in person. In Technology, we’re asking that you attend the office a minimum of 1 day per week. </ ...

Lead Data Engineer

Join to apply for the Lead Data Engineer role at UK Home Office Join to apply for the Lead Data Engineer role at UK Home Office Direct message the job poster from UK Home Office Lead Technical Recruiter (Cyber Securi ...

Software Engineer

Hamiltonian Dynamics is a growing technology company working across Defence and Cyber Security, delivering software solutions that support critical national and enterprise systems. With teams based in Gloucestershire, Manchester, and London, we are entering an exciting new phase of expan ...

Software Engineer, London

Institutional Fabric for the Digital Asset Market Founded in 2018, Talos provides institutional-grade trading technology for the global digital asset market, powering many of the major players in the crypto ecosystem. Our mission at Talos is clear: to advance the mass adoption of digital ...

Senior Compute Platform Engineer

About the Role We are a full‑stack shop consisting of product and portfolio leadership, data engineering, infrastructure and DevOps, data/metadata / knowledge platforms, and AI/ML and analysis platforms, all geared toward: Building a next‑generation, metadata‑and‑automation‑driven data ex ...

Tech Lead – Departure & Compliance

Job Description - Tech Lead – Departure & Compliance (16993) We are easyJet – a FTSE-250 listed, £multi‑billion low‑cost airline that serves tens of millions of customers every single year. If you’re reading this, you have probably already been an easyJet customer, and you’ll know that there is n ...

Software Development Engineer II ML Platform

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success.Why Join Us?</b ...

Graduate Technical Consultant

This range is provided by Genesis Global. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range WHO WE ARE We enable financial markets organisations to innovate at speed through a software application development ...

Data Solution Architect

Data Solution Architect Location: Belfast (Hybrid)Eligibility: UK work authorisation required (no sponsorship available) We're working with a growing technology consultancy delivering large scale data transformation programmes within the h ...

Platform Engineer Go/Python, Azure Infra, Equity

An innovative AI startup in London seeks a passionate Software Engineer to build and maintain cloud infrastructure, create Kubernetes clusters, and write IaC with Terraform. The ideal candidate has a strong technical background in Go or Python, thrives in a client-facing role, and values autonomy. Enjoy a flexib ...

Senior Python Engineer — 6 Month Contract (London)

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 ...

Quant Technologist: C++/Python, Microservices in Finance

Golang Works is seeking a Quant Technologist to engage directly with quant researchers and portfolio managers in London. This full-time role offers a unique opportunity to work with cutting-edge technologies including C, Python, and Kubernetes. The ideal candidate will have experience in microservices ...

Python QA Automation Engineer – AI & Agentic Systems

Airswift is seeking a Python QA Automation Engineer to ensure the quality and reliability of AI services based in London. This full-time position involves building automation frameworks, designing evaluation pipelines, and implementing tests using Pytest and BDD. Ideal candidates will have strong Pytho ...

Lead Software Engineer (Python & Django) SC cleared

Are you a skilled Lead Software Engineer specialising in Python and Django, looking for an impactful contract opportunity? Evodia Limited is partnering with a prominent client in the government sector to find a talented professional for a 12-month contract role that combines technical leadership with meani ...

Senior Python Engineer – HealthTech for Early Detection

Stars Arena in London is seeking a Senior Python Engineer to join our HealthTech startup. You will play a crucial role in our mission to revolutionize health and enhance disease detection. We leverage cutting-edge technology for early detection and prevention of chronic diseases. The ideal candidate po ...

Graduate Data Scientist: AI, Python & Azure ML

An innovative project solutions company located in Birmingham is looking for a Graduate Data Scientist to join their Data & AI team. This position involves working with cutting-edge AI technologies and transforming complex data into actionable insights for clients in various sectors. Candidates should have a rel ...

Senior Python Data Platform Engineer Asset Management

JPMorganChase is seeking a technology professional to design and deliver innovative solutions impacting Asset & Wealth Management. In this role, you will develop secure code, automate recurring issues, and lead evaluation sessions across teams. The position requires cloud analytics experience, advanced programmi ...

Senior Python Engineer AI Model Training (Remote)

Prolific is seeking Senior Python Developers to join our Expert Network to train and evaluate cutting-edge AI models. This role offers competitive pay up to $50/hr, flexible hours, and the ability to work from home. The ideal candidate will have a strong educational background in Computer Science, comb ...

Trading Systems Engineer C++/Python, High Availability

A leading trading firm in London is seeking a Software Engineer to design and develop high availability trading systems using C++ and Python. The ideal candidate will have over 5 years of C++ experience and a strong understanding of concurrency and software for trading. This role requires collaboration with quan ...

Client Facing Data Quality Lead (SQL & Python)

Moody's Corporation is seeking a Data Remediation Specialist in Salford, England to deliver high-quality data solutions in a client-facing environment. Ideal candidates will have strong expertise in SQL and Python alongside experience in data quality management and fast-paced environments. You will be ...

Remote Cisco Tutor: Cybersecurity, Python & Data Science

Glasgow Code Learning is seeking Cisco-certified instructors to deliver short courses on topics like Cybersecurity and Data Science. The role primarily involves remote teaching, catering to learners' schedules in the evenings and weekends. Successful candidates should possess strong knowledge in the re ...

Lead Python Engineer — Secure, Scalable Systems Leader

Lead Python Engineer About CGI – Secure Innovation Secure Innovation is part of CGI’s Space, Defence and Intelligence business unit, focused on delivering advanced technical solutions for government clients tackling complex challenges. Our teams work closely with clients to help th ...

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    Full Stack Java Developer Python Jobs in United Kingdom Job Search Guide, Trends and Insights