Senior Software Engineer Fullstack Python React Jobs in UK

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Remote Python Engineer Contract (1 Month, 20h/wk)

Mercor is looking for a Software Engineer to develop and maintain complex Python systems for real-world environments. As a contractor, you will earn $100 per hour and work 20 hours per week remotely. Ideal candidates should have experience at top US tech firms and a proven track record with complex Python system ...

System Test Engineer – Tooling (Python/Go, On site)

hackajob is looking for a System Test Engineer to join Dexory in Wallingford, Oxfordshire. This role focuses on building and maintaining internal tools used in hardware and software blended environments. Candidates should be proficient in Python or Go, have strong debugging skills, and comfortable with Linux. Th ...

VP Full Stack Engineer (Kotlin/Python) – Hybrid & Growth

Citigroup Inc. is seeking a Full Stack Engineer (Kotlin and/or Python) at the VP level to design and develop innovative solutions within Equities Technology. In this role, you'll enhance trader workflow tooling and engage with business users globally. You will have the autonomy to influence technology decisions ...

Python Backend Engineer Enterprise REST & CI/CD London

A recruitment agency is seeking a Backend Developer in London. This role offers a salary up to £65,000 p.a. with three office days per week. Responsibilities include developing in-house business systems, collaborating with teams, and following Agile methodologies. Candidates should have proven experience in ente ...

Junior Platform Engineer – Go/TS/Python, Obs & Growth

A leading data collaboration platform in Basingstoke is looking for a Software Engineer to join their Platform Sustaining & Enhancement team. In this role, you will work on software debugging, feature development, and documentation. Candidates should have 1-3 years of experience, be knowledgeable in Go or Python ...

Mobile & Web Engineer (Mid Level) | Java or Python

A forward-thinking digital media company is looking for a talented Mid-Level Developer to join their dynamic team. Ideal candidates will have over 3 years of experience in Web and Mobile Development, with good knowledge of Java or Python, as well as experience in Android or iOS. Offering a competitive salary of ...

Python API Automation QA Engineer Backend Testing Remote

A leading technology company based in Cambridge is looking for a QA Test Engineer (Python API Automation) to ensure the quality of their core technology platform. The ideal candidate will have strong Python coding skills and test automation experience, focusing on backend testing of cloud-based solutions. The ro ...

Lead Python Engineer Scale New Lending Products (Hybrid)

A financial technology company in Greater London is seeking a Lead Python Engineer to lead a team and develop new lending products. This hands-on role combines technical leadership with team management, focusing on building production-grade Python services. The ideal candidate will have experience in Python prod ...

QA Test Engineer: Ruby/Python Automation & API Focus

A tech company in Greater London is seeking a Test Engineer to join their dynamic team. The ideal candidate will have a passion for testing, technical experience in manual and automated testing including using Ruby and Cypress. Responsibilities include testing during user story development, managing workload, an ...

Backend Engineer (Go/Python) Scalable Web & Data Pipelines

A leading technology company in Cambridge is seeking a Back-End Engineer to design and maintain scalable web services using Go and Python. The candidate will face deep technical challenges and collaborate with cross-functional teams. Requirements include 5+ years in web service development, knowledge of various ...

Python Engineer – LLM Pipelines & CI/CD (Hybrid London)

A leading consulting firm is seeking a Full-Stack Software Engineer in London with strong skills in Python and SQL. This hybrid role includes responsibilities such as managing data ingestion pipelines and supporting underwriters. The ideal candidate will have experience in Azure DevOps and CI/CD practices. Join ...

Robotics Tooling Engineer – Python/Go on Linux (Onsite)

A tech recruitment agency is seeking a Software Engineer to take ownership of tooling for robot commissioning and servicing at their partner company. The ideal candidate will have proficiency in Python and/or Go, experience with Linux systems, and a strong understanding of internal tooling practices. This role i ...

Partial Remote Python Backend Engineer Front Office API

Apex Systems is seeking a Python Developer in London to join a front-office team at a leading financial institution. This role involves designing and implementing backend software solutions for a globally distributed platform within the structured notes domain. Candidates should have at least 5 years of experien ...

Data Solutions Engineer: Power BI, SharePoint & Python Pro

Ride Report is seeking a Data Solutions Engineer in Birmingham, responsible for developing and maintaining SharePoint infrastructure and Microsoft Office 365 applications. You will ensure the market-leading status of INRIX’s traffic incident data product through integration of technologies and workflows. Candida ...

ML Infra Engineer (Python/Rust) — High Perf Systems

Hunter Bond is seeking an ML Infrastructure Engineer to join their fast-growing team in London. In this role, you will design and build infrastructure for high-performance machine learning workloads, collaborating with ML engineers and researchers. Key qualifications include over 4 years of experience with Pytho ...

Lead AI/ML Engineer (Python) – Cloud, MLOps & AWS

A leading global financial services firm is seeking a Lead Software Engineer to join their Applied Artificial Intelligence and Machine Learning team. You will play a pivotal role in transforming operations by integrating innovative AI/ML solutions. The ideal candidate has strong skills in Python and Kubernetes, ...

AI Cloud Engineer: Automation & Python on Azure (Hybrid)

A prestigious financial services organisation seeks an AI Cloud Engineer to develop automation solutions. You’ll transform complex business processes into streamlined workflows using Python and Azure. The role requires 2 days in Central London per week, featuring a competitive salary of £90K-£100K with bonuses, ...

Lead Python Engineer for Front Office Quant Trading

A leading financial services firm in the Greater London area is hiring a Lead Software Engineer to work on trading and investment projects. You will collaborate with developers, quants, and traders, focusing on developing engines, services, and APIs while applying disciplined code management. Candidates should h ...

Electrical Engineer with Python Experience Freelance AI Trainer

Electrical Engineer with Python Experience - Freelance AI Trainer 2 days ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. This opportunity is only for candidates currently residing in the specified country. Your location may affec ...

Lead Python & Test Automation Engineer | Cloud & CI/CD

A leading global financial services firm is seeking a Lead Software Engineer to enhance and deliver technology products. The role involves developing high-quality production code, leading technical troubleshooting, and contributing to software operational stability. Candidates should have strong experience in Py ...

Junior Platform Engineer – Go/TS/Python, Obs & Growth

A leading data collaboration platform in Basingstoke is seeking a Software Engineer to join their Platform Sustaining & Enhancement team. The role involves debugging software, developing features primarily in Go and TypeScript, and enhancing observability. Candidates should have 1-3 years of experience and be fa ...

Python Engineer for Front‑Office Trading Platform (London)

A diversified trading firm in London is seeking a Software Engineer specializing in Python to join their multi-asset trading team. The role involves enhancing automated trading systems, collaborating with traders, and mentoring junior developers. Candidates should have at least 3 years of experience, strong tech ...

Remote Python Systems Engineer for AI Collaboration (Contract)

A leading AI solutions provider is seeking a Software Engineer to work remotely on contract for 1 month at $100 per hour. The ideal candidate will develop complex Python systems and collaborate with AI research teams to enhance model performance. Applicants should have experience at top U.S. tech firms and a str ...

Remote Backend Python Engineer High Impact, AI Tools

SOLAS IT RECRUITMENT is looking for a Python Software Engineer to join a collaborative remote team in Northern Ireland. This role focuses on backend development, requiring strong Python and SQL skills, with an emphasis on data processing and system performance. The successful candidate will work in a small, agil ...

Remote Python Backend Engineer for AWS SaaS API

Client Server is seeking a Backend Software Engineer/Developer (Python API AWS SaaS) in Scotland. This role involves designing and developing features for a large-scale video platform on AWS. The ideal candidate has strong backend development skills in Python, experience with PostgreSQL, and familiarity with RES ...

VP, Equities Tech Full Stack Engineer (Kotlin/Python)

Citi is seeking a Vice President Developer for their Strategic Equity Solutions team to design and develop innovative software solutions enhancing trader workflow. The successful candidate will possess strong backend skills in Kotlin/Python and a deep understanding of trading workflows. This role offers substant ...

Full Stack Engineer (Kotlin and/or Python) – VP

Overview Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape ...

Fixed Income Python Engineer — Risk Analytics for Trading

Paragon Alpha - Hedge Fund Talent Business is seeking an experienced Software Engineer to join their risk team in London. You'll be responsible for developing and optimizing risk analytics platforms, collaborating with traders and quants while troubleshooting issues in a fast-paced environment. Ideal candidates ...

ML Full Stack Engineer: Python Backend & AI Systems

Machine Learning Software Engineer - Full Stack (LLM) London, United Kingdom Bachelor’s degree in Computer Science, Computer Engineering, or a related technical background. Experience Backend software engineering experience in Python. Responsibilities and Requirement ...

Fast Focus Python Engineer – Ship Products in London

Fuku is looking for a Fast Engineer in London to build and ship products independently. We seek hungry, high-energy individuals who thrive in a fast-paced startup environment and have a proven track record of delivering results quickly. This is a build seat, focused on making decisions and shipping products regu ...

Remote Python Full Stack Engineer — Low Code Automation

MOST Specialist Technologies, localizada em Full Sutton, Reino Unido, busca um(a) desenvolvedor(a) para atuar em automação de workflows utilizando ferramentas low-code como N8N e integração com APIs. O candidato ideal deve ter formação em Ciências da Computação ou áreas relacionadas, experiência em Python e conh ...

Hybrid Python Full Stack Engineer | Vue/JS, FastAPI

Client Server is looking for a software professional with Python framework experience to work on technically challenging projects. With a salary of up to £65k plus bonuses, the role supports hybrid working conditions, allowing you to work from home most of the time with occasional office meetings in Cambridge. T ...

Staff ML Engineer (Python) — Real Time pLTV & Growth

Dex is looking for a specialist to join a high-growth, profitable technology company in London. This role focuses on designing and scaling production-grade ML systems while optimizing personalized reward mechanisms. Candidates should have a strong background in statistical methods and machine learning, particula ...

Full Stack Engineer (Kotlin and/or Python) – VP

Full Stack Engineer (Kotlin and/or Python) – VP Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From ...

Backend Engineer – Java/Spring Boot & Python (Hybrid London)

Methods Business and Digital Technology Ltd is seeking a Back-end Developer specializing in Java Spring Boot and Python to join their private sector team in London. This hybrid role requires 3 days on-site each week. The successful candidate will lead the rebuild of core architecture, optimize technical connecto ...

Remote Python & Kubernetes Data Engineer AI/ML Workflows

Canonical Group Ltd is seeking a Python and Kubernetes Software Engineer focused on Data, Workflows, AI/ML, and Analytics. This remote position requires collaboration on end-to-end data analytics and MLOps solutions using open-source tools. Ideal candidates will have a strong background in Python, experience wit ...

Python Engineer: AI & LLM for Fintech (Hybrid, London)

LGBT Great is seeking a Python Engineer in London to help develop scalable AI-driven fintech products. The role involves designing backend systems, integrating LLM features, and working with product and engineering teams. Candidates should have strong Python skills, experience with AI and LLMs, and API developme ...

Remote Anti Bot Engineer (Python/Go/Rust/JS)

Adthena is seeking an Anti-Bot Engineer to design and operate large-scale web scraping systems focused on Google search environments. The ideal candidate will have hands-on experience scraping protected platforms, a strong technical background in HTML parsing, and familiarity with data extraction techniques. Thi ...

Python Cloud Engineer – AWS, Terraform, FastAPI | Hybrid UK

A premier technology recruitment agency is seeking an experienced Python Engineer for a contract role in the United Kingdom. This position entails designing cloud-native applications and optimizing CI/CD pipelines using Python, AWS, and Terraform. Candidates should have a proven track record of at least 5 years ...

AI Inference Engineer | GPU Scale Rust/Python | Equity

We are looking for an AI Inference Engineer to join our growing team. We build and run the inference engine behind every Perplexity query and deploy dozens of model architectures at scale with tight latency and cost budgets. Our stack is Rust, Python, CUDA, and CuTe DSL.Responsibilities</stron ...

Staff Backend Engineer (C++/Java/Go/Python/Typescript)

Fastest Growing Start-up in the UK | Defence We are partnered with one of the UK's fastest-growing start-ups. They are a very technically focused group building cutting-edge decision-making technology. The company's founding team has a real pedigree, with backgrounds from the UK Special For ...

Lead AI/Python Engineer (+ Equity) at LightWork AI

Job Title Lead AI/Python Engineer Company Description LightWork AI - Fast-growing AI startup transforming real estate technology Location London, UK Job Description Join LightWork AI in London to lead the full lifecycle of AI development. You ...

Full Stack Engineer (Kotlin and/or Python) – VP

For additional information, please review .**Full Stack Engineer (Kotlin and/or Python) – VP**Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating ...

AI/ML Prototype Engineer — Python & SQL, Hybrid (London)

N Consulting Limited is looking for a Prototype Engineer to design and develop prototypes using Python for data-driven and AI/ML use cases. Candidates should have over 10 years of experience in machine learning, SQL, and data analysis. The successful applicant will create and evaluate machine learning models, de ...

Cloud Native Full Stack Engineer (Python, Angular & AWS)

Infinity Quest seeks an Associate General Manager - Delivery & Operations in London, England. This role is focused on overseeing delivery and operations within a dynamic IT environment, requiring strong skills in Cloud Architecture, API integration, and DevOps practices. Candidates should possess relevant experi ...

DeFi Systems Engineer – Rust/Python for Latency Trading

Radley James seeks a DeFi Developer in Greater London to join a technical trading team. This role involves building high-performance systems in Rust and Python for decentralized markets, with a strong focus on end-to-end ownership across the trading stack. The ideal candidate will have a software engineering bac ...

Python Backend Engineer Real Time Data & Trading Feeds

Mustard Systems Ltd. in Greater London is looking for a Software Engineer specialized in Python to develop and maintain real-time systems that support trading strategies. The position offers a hybrid working environment with opportunities to drive the technical direction and impact business performance directly. ...

Lead Python Engineer for AI & Data (Hybrid UK)

RAW Search is collaborating with a leading consulting firm to find a Lead Python Engineer in Greater London. The role entails leading the design of Python services and REST APIs, managing code repositories, and enforcing best practices in a hybrid working environment. Ideal candidates should have advanced Python ...

Front Office Python Engineer for Trading Desk Impact

VirtueTech Recruitment Group is seeking a Python Engineer based in Greater London to work directly on the trading desk of a Global Energy Trading Firm. This role involves building tools that directly influence real-time decision-making while collaborating closely with commercial teams. Ideal candidates should ha ...

Hybrid ML Engineer: Production AI with Python & C#

Investigo is seeking a Machine Learning Engineer to join an advanced analytics team in Nottingham on a 3-month contract. The role involves developing production-grade machine learning systems, managing large-scale datasets, and collaborating closely with data scientists and engineers. Essential skills include ex ...

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    Senior Software Engineer Fullstack Python React Jobs in United Kingdom Job Search Guide, Trends and Insights