Python Software Engineer Jobs In Watford Page 872 by Location

Lead Python Developer (TOP Trading Company!)

Company IconRobert Half
Location IconLondon

Overview As Lead Python Developer, you will own the design and delivery of data platforms and automation within a fast-growing financial services business. You’ll shape the technology roadmap and collaborate with senior leadership to deli...Read More>>.

Posted: September 30th, 2026
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Python Developer Times Fastest Growing Fintech

Company IconQuant Capital
Location IconLondon

Overview As a Python Developer you will build and enhance the core enterprise-grade platform used by a tech-driven trading firm. You will work in the main development team to implement features, diagnose issues, and fix bugs, focusing on se...Read More>>.

Posted: October 1st, 2026
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Python Developer Times Top 50 fintech firms

Company IconQuant Capital
Location IconLondon

Overview In this role you will join a fast-paced data science team building an enterprise-grade social data platform in Python. You will contribute to green-field development, shaping architecture and leveraging open-source tech including D...Read More>>.

Posted: October 1st, 2026
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Python Developer – Fintech PostgreSQL, TDD, Cordova

Company IconQuant Capital
Location IconLondon

Overview In this fintech-focused role you will design, develop and deploy Python-based backend services that power payments and social finance products. You will work within a tight Agile team, using microservices and TDD/BDD to deliver sca...Read More>>.

Posted: October 1st, 2026
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Senior Python Developer - up to 90,000 + Bonus - Hybrid

Company IconInvolved Solutions
Location IconLondon

Overview Senior Python Developer to build and maintain automation, backend services and tooling for telecoms and network operations in a large-scale tech environment. You will focus on Python-based automation, REST APIs, and backend develop...Read More>>.

Posted: October 1st, 2026
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Counterparty Credit Risk Python Developer, AVP

Company IconCitigroup
Location IconLondon

Overview In this role you will develop and enhance Counterparty Credit Risk applications that power derivatives risk metrics. You will work within Citi’s Financial Risk Technology group to improve end-to-end calculation, testing, and depl...Read More>>.

Posted: October 1st, 2026
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Senior Python Developer AWS - Front Office

Company IconClient Server
Location IconLondon

Overview In this role you will design and build high-performance trading systems and cloud infrastructure to support front, middle, and back-office operations. You’ll collaborate with stakeholders to translate complex needs into scalable...Read More>>.

Posted: October 1st, 2026
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Quantitative (Python) Developer - Hybrid London - Up To 250k!

Company IconOpus Recruitment Solutions
Location Icon

Quantitative Developer – Python – Central LondonWe’re a fast‑paced blockchain scale‑up looking for Quantitative Developers with proficiency in Python, Pandas, NumPy, and experience from the Trading world.We’re on the...Read More>>.

Posted: October 6th, 2026
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Python Developer (Hybrid) – London Contract (6 Months)

Company IconIntec Select Ltd
Location IconLondon

Intec Select Ltd. seeks a Python Developer for a 6-month contract in London, working hybrid with 2 days per week on-site at the client's office. You will build and maintain customer-facing and internal platforms, using Python (Django) across the s...Read More>>.

Posted: October 6th, 2026
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Senior Python Developer - Trading Systems & Cloud

Company IconEnfint
Location IconLondon

Enfint in London, part of a global Japanese bank, develops high-performance trading systems and cloud infrastructure for critical front-, middle- and back-office operations.The role designs, develops, and enhances trading platforms, transla...Read More>>.

Posted: September 14th, 2026
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Senior Python Developer - Trading & Risk Platforms (Hybrid)

Company IconScaleneWorks People Solutions LLP
Location IconLondon

ScaleneWorks People Solutions LLP in London is seeking a Senior Python Developer for trading and risk platforms to join a major financial services client. The role is hybrid, requiring 2-3 days in the office.You will develop Python-based ap...Read More>>.

Posted: September 14th, 2026
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Core Python Developer for High-Frequency Trading (Hybrid)

Company IconWintermute
Location IconLondon

Wintermute is seeking an experienced developer to join the Core Development team in London. You will work in a small, high‑impact group, writing clean and concise code while collaborating with traders, quants and the DeFi team.Most servic...Read More>>.

Posted: September 14th, 2026
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Front Office Python Developer – Trading Systems

Company IconOrbis Group
Location Icon

Front Office Developer - Trading Technology - Python Get AI-powered advice on this job and more exclusive features. This range is provided by Orbis Group. Your actual pay will be based on your skills and experience — talk with...Read More>>.

Posted: September 14th, 2026
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Lead Python Developer & Tech Lead — Hybrid London

Company IconTank Recruitment
Location IconLondon

Tank Recruitment in London is seeking an experienced Lead Python Developer to join a growing tech team on a hybrid basis, combining hands-on coding with technical leadership to deliver high-quality software and data-driven solutions. You will guid...Read More>>.

Posted: September 14th, 2026
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Python Developer - Up to £155k + Bonus + Benefits - London

Company IconHunter Bond
Location IconLondon

A world-class tech house in the finance sector is looking for a talented Python Developer to join its high-performing software engineering team in London.This is an opportunity to work alongside some of the industry’s top technologists...Read More>>.

Posted: September 14th, 2026
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Python Developer — Real-Time Data & Greenfield Projects

Company IconHunter Bond
Location IconLondon

Hunter Bond is seeking a talented Python Developer to join its software engineering team in London. This role offers the chance to build innovative platforms and tackle real-time data challenges alongside elite engineers from top-tier tech firms....Read More>>.

Posted: September 15th, 2026
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Product Security Engineer - Build Secure Maritime Software

Company IconSRT Marine Systems plc
Location IconWarmley

SRT Marine Systems plc, a market leader in maritime surveillance technology, seeks a Product Security Engineer. The role is based primarily from our Bristol office with occasional travel to Cardiff and Bath, offering hybrid working arrangement....Read More>>.

Posted: September 16th, 2026
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EMS Lead Engineer: End-to-End Software & Calibration

Company IconGordon Murray Group
Location Icon

Gordon Murray Group seeks a Lead Engineer – Engine Management Systems (EMS) to own EMS software and calibration end-to-end across all programmes. You will lead external partners, govern EMS delivery, and ensure production-ready integration with...Read More>>.

Posted: September 17th, 2026
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Python Developer – Mission-Critical Defence & Space

Company IconOnyx-Conseil
Location Icon

CGI’s Space, Defence and Intelligence unit is seeking experienced Python Developers to join cross-functional teams delivering secure, scalable solutions for government clients in the UK. You will design, build, and operate mission-critical syste...Read More>>.

Posted: September 19th, 2026
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Contract Python Developer - London: Inventory & Web Apps

Company IconMUJI
Location IconLondon

MUJI in London is seeking a Python Developer to design, test and maintain in-house applications in a Windows environment. The role focuses on bridging our inventory management system with replenishment and 3PL logistics, including Big Commerce int...Read More>>.

Posted: September 21st, 2026
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Senior Python Developer – AI Training (Remote)

Company IconProlific
Location IconNewcastle upon Tyne

Python - Senior Developers - AI Training - UK About Prolific Prolific is not just another player in the AI space – we are building the biggest pool of quality human data in the world. Over 35,000 AI developers, resear...Read More>>.

Posted: September 21st, 2026
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Python Developer for Counterparty Credit Risk Analytics

Company IconCiti
Location IconLondon

Citi in London is seeking a Counterparty Credit Risk Developer to advance the derivatives credit risk application. You will develop and maintain risk calculations, collaborate with Quant and Technology teams, and help optimize CI/CD and cloud work...Read More>>.

Posted: September 21st, 2026
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Java/Python Developer — Spring Microservices & Agile DevOps

Company IconMethods
Location IconLondon

Methods is seeking a Java / Python Developer to join our UK-based team. You will help manage, build, and design Java applications with Spring Boot, microservices, and system design exposure.The role emphasizes collaboration with stakeholder...Read More>>.

Posted: September 21st, 2026
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Senior Software Security Developer – Core Platform Services London

Company IconPhysicsX Ltd
Location IconLondon

Senior Software Security Developer – Core Platform Services London About us PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed o...Read More>>.

Posted: September 21st, 2026
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Counterparty Credit Risk Python Developer, AVP

Company IconCiti
Location IconLondon

Counterparty Credit Risk Analytics is a group within Citi Financial Risk Technology, responsible for developing the applications used for derivatives credit Risk and Basel Capital calculations Firm-wide.The Counterparty Credit Risk Devel...Read More>>.

Posted: September 21st, 2026
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Lead C++ Engineer - Own Complex Security Software

Company IconCBSbutler
Location IconLondon

CBSbutler is assisting a cybersecurity technology business in London to recruit a Lead C++ Software Engineer - Technical Delivery. The role is hybrid with 2 days on site, offering £80,000-£95,000 plus bonus and excellent benefits.You will...Read More>>.

Posted: September 21st, 2026
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Senior Python Developer: FRTB & Risk Solutions

Company IconCrisil
Location IconLondon

Global Investment Banking Client is seeking a talented Python developer to join a cross-functional team delivering strategic and tactical solutions for Global Markets, Capital Markets, and Treasury. As a senior developer, you will contribute desig...Read More>>.

Posted: September 21st, 2026
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SQL Analytics Engineer (AI-Enabled, Databricks) - Software

Company IconSalt
Location IconLondon

SQL Analytics Engineer (AI-Enabled, Databricks) - Software - London or ReadingDaily rate: £350 - £450Duration: 12 monthsStart: ASAPMy client is looking for an Analytics Engineer to join a global analytics team supp...Read More>>.

Posted: September 22nd, 2026
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Python Developer (must have current SC clearance)

Company IconPlextek
Location IconGreat Chesterford

Python development - software to be integrated with a defence cloud environment, familiarity with D2S would be a major advantageDomains: Data & AI, Automation & Tooling, DevOps & InfrastructureModern devops / automated to...Read More>>.

Posted: September 22nd, 2026
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Python Developer - Agentic AI / GenAI - Investment Banking

Company IconGCS Recruitment
Location IconLondon

Python Developer - Agentic AI / GenAI - Investment Banking London, Farringdon | Hybrid | Inside IR35 | Contract We are looking for a highly experienced Python Developer / AI Engineer to join a consulting engagement...Read More>>.

Posted: September 23rd, 2026
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Observability Engineer NEC Software Solutions (India) United Kingdom Middle just now

Company IconRemote Genie
Location Icon

Come join us and make a difference in the world! Discover more atwww.necsws.com NO AGENCIES PLEASE Job Description Please note, role can be remote or hybrid, subject to location. Role Overview...Read More>>.

Posted: September 23rd, 2026
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Python Developer: Hardware Test Automation—Contract

Company IconOvyo
Location IconReading

Ovyo is seeking a Python Developer to join an existing engineering team in West Reading, supporting automation of manufacturing test rigs. You will write Python scripts to control hardware, read measurements, and analyze data with NumPy and relate...Read More>>.

Posted: September 23rd, 2026
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Data Product Python Developer – Hybrid London (FTC)

Company IconSaga plc.
Location IconLondon

Saga plc. London hybrid data team seeks a Python Developer (Data Products) to turn data and insights into scalable self-service applications using Python, Streamlit and SQL.You will work with stakeholders, analysts and engineers to bring id...Read More>>.

Posted: September 24th, 2026
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Senior Python Developer – Elite Tech, Hybrid London

Company IconHunter Bond
Location IconLondon

Hunter Bond is seeking a Software Developer (Python) in London. The role offers a compensation package up to £140,000 plus bonus and additional benefits, with hybrid working in London. You will contribute to high-demand software platforms using P...Read More>>.

Posted: September 25th, 2026
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Senior Python Developer – Data Integrations & APIs

Company IconAreti Group | B Corp™
Location IconLeeds

Senior Python Developer – Data Integrations & APIs | Public Sector | Up to £470/day (Inside IR35)We're hiring a Senior Python Developer to join a new integrations squad on a major UK public sector programme, building rob...Read More>>.

Posted: September 25th, 2026
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Senior Quant Developer, Rates Analytics (Python/C++)

Company IconCiti
Location IconLondon

Citi's Markets Quantitative Analysis Rates team is seeking a Quant Developer to join a global financial institution in London. You will apply strong Python and C++ skills to develop analytics and support senior management with MI data, balancing s...Read More>>.

Posted: September 27th, 2026
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Lead Quant Developer: Rates Analytics (Python/C++)

Company IconCitigroup Inc.
Location IconLondon

Citi is seeking a Quant Developer for the Markets Quantitative Analysis Rates team in London. You will apply programming and quantitative skills to prepare information used by senior management to understand market reactions, delivering MI data un...Read More>>.

Posted: September 27th, 2026
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Python Developer (mid-level) - Cambridge - £55-70,000

Company IconSalt
Location IconFen Ditton

Mid-level (2 years min commercial Python coding experience) - Cambridge | Hybrid – 2 days a week in office | £55,000–£70,000 Python with C++, Rust or JavaScript, Hybrid (Cambridge), CI/CD, Git, Docker. An exciting AI...Read More>>.

Posted: September 28th, 2026
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Senior Controls Engineer – PLC, HMI & Safety Software

Company IconEnergy Jobline CVL
Location IconHinckley

Proactive Global is seeking an experienced Controls Engineer to join a dedicated controls department delivering high-quality automation solutions for industrial machinery across various sectors in the UK.The role covers design, development,...Read More>>.

Posted: September 28th, 2026
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Sr. Full Stack Developer (Java, React & Python)

Company Iconbroadridge
Location IconLondon

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 anno...Read More>>.

Posted: September 30th, 2026
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Data Modelling Specialist - Senior Python Developer

Company IconHarvey Nash
Location IconGlasgow

3 days a week on site We’re looking for an experienced Data Modelling Specialist – Senior Python Developer to join a team working on enterprise data governance, metadata management and data modelling within a highly re...Read More>>.

Posted: October 1st, 2026
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Remote Python Developer – Automation & REST APIs

Company IconProject Global Limited
Location IconIpswich

Project Global Limited is seeking an experienced Python Developer to be based at the client’s office in Ipswich/London, UK. The role is hybrid, allowing UK-wide remote work with 3-4 days in the Ipswich/London offices.It is a 12-month temp...Read More>>.

Posted: October 2nd, 2026
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Glasgow Python Developer: FastAPI & Pydantic, Production

Company IconTrinIT Talent Ltd
Location IconGlasgow

TrinIT Talent Ltd in Glasgow is seeking a hands-on Python Developer for a 1-year Fixed Term Contract based in Glasgow. The role requires 3 days per week on-site in Glasgow and offers £80k per year.The successful candidate will have extensi...Read More>>.

Posted: October 2nd, 2026
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Python Developer for Terahertz Imaging & AI R&D

Company IconHireHi
Location IconFen Ditton

HireHi ищет опытного бэкенд-разработчика на Python в стартапе, разрабатывающем решения в области сенсинга и терamagерцовых изображений для ме...Read More>>.

Posted: October 2nd, 2026
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Remote PyCharm–Python Developer for macOS Contract

Company IconMercor
Location Icon

Mercor is seeking a contractor to work on a PyCharm-based workflow for macOS, focusing on Python development tasks. The role requires independent, asynchronous work and collaboration with backend engineers and data practitioners to optimize softwa...Read More>>.

Posted: October 2nd, 2026
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Python Developer Times Top 50 fintech firms

Company IconAppcast
Location IconLondon

Python Developer Times Top 50 fintech firmsQuant Capital is urgently looking for a Python Developer to join our high profile client in their data science team.Our client is a big data business that has created a world leading social data pr...Read More>>.

Posted: October 3rd, 2026
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GenAI-Powered Python Developer for ML/AI Platform

Company IconMorgan Stanley
Location IconLondon

Morgan Stanley in the United Kingdom seeks a Developer to focus on Generative AI and Machine Learning software. You will design, develop, and implement scalable Python-based solutions within an Agile squad, collaborating with global teams to trans...Read More>>.

Posted: October 5th, 2026
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Senior Python Developer - Build APIs & Async Workflows

Company IconEmergn
Location IconLondon

Emergn seeks a Senior Python Developer to own a business-critical Python platform and help it grow. You will develop backend services and APIs using Python and Flask, and work with MongoDB, Celery, and data tools in a fast-moving, collaborative se...Read More>>.

Posted: October 5th, 2026
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