Python Senior Software Engineer

Company IconHackajob Ltd
Location IconManchester

Our client is the digital and intelligence arm of a major defence company.Location(s): UK, Europe & Africa : UK : Manchester Our client is home to 4,500 digital, cyber and intelligence experts. We work collaboratively across...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - Intraday Trading

Company IconMillennium Management
Location IconLondon

Overview In this role you will develop and optimize real-time analytics and market data solutions for Millennium’s intraday trading and portfolio management platforms. You’ll collaborate with R&D and front-office teams to deliver scalab...Read More>>.

Posted: October 1st, 2026
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Senior Software Engineer – ML Infrastructure (Python)

Company IconARM
Location IconCambridge

Overview In this role, you design and evolve frameworks to exercise, measure, and explain ML workloads at scale across Arm platforms. You’ll build tooling for ML validation and performance analysis, collaborating with ML software, systems...Read More>>.

Posted: October 1st, 2026
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Senior Software Engineer (Java Or Python) - VP

Company IconCitigroup
Location IconBelfast

Overview In this role you will help shape Citi’s tech-enabled finance landscape by delivering full‑stack, cloud‑native applications using Java or Python. You’ll collaborate with multiple teams to align features with architecture and...Read More>>.

Posted: October 1st, 2026
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Python Software Engineer Agentic AI

Company IconClient Server
Location IconLondon

Overview In this role you will design and deliver backend solutions and AI-enabled workflows that empower intelligent agents. You’ll work with a cross-functional team to implement robust APIs and prompt-driven systems leveraging LLMs. You...Read More>>.

Posted: October 5th, 2026
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Python Software Engineer Cyber Security

Company IconClient Server
Location IconLondon

Overview In this Python Software Engineer role, you will help build a Greenfield AI cybersecurity product within the R&D team. You’ll mainly develop backend services in Python while evaluating Rust and other emerging technologies to solve...Read More>>.

Posted: October 5th, 2026
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Python Software Engineer Conversational AI

Company IconClient Server
Location IconLondon

Overview In this remote-first role, you build and own production-grade AI systems and the infrastructure behind a conversational AI platform. You’ll design scalable backend services and integrate LLMs with third-party tools to deliver rel...Read More>>.

Posted: October 10th, 2026
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Python Software Engineer — Quant Trading Systems

Company IconWehrtyou
Location IconLondon

Hudson River Trading (HRT) is a quantitative trading firm that builds cutting-edge systems for global operations. We hire software engineers across teams to tackle complex problems with strong fundamentals in programming, debugging, and critical t...Read More>>.

Posted: October 21st, 2026
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Software Engineer (C++ or Python) – 2027 Grads

Company IconWehrtyou
Location IconLondon

Hudson River Trading (HRT) is seeking talented Software Engineers to join our teams in New York, London, and Singapore. As a Software Engineer at HRT, the code you write is our business. Our software engineers create and maintain critical technolo...Read More>>.

Posted: October 21st, 2026
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Senior Python Software Engineer - AI Cybersecurity

Company IconDarktrace
Location IconCambridge

Darktrace is seeking a Senior Software Engineer in Cambridge (hybrid: in-office at least 2 days/week) to lead prototyping and development of innovative ideas for our cybersecurity platform. You will work with engineers, designers and strategists t...Read More>>.

Posted: October 21st, 2026
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Senior AI Python Software Engineer

Company IconNearform
Location Icon

About the AI Senior Python Engineer roleAs a Senior Engineer at Nearform your main task will be designing & building applications using Python and AI tools. However as you’ll likely work on a variety of projects your responsibilities...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer (with AWS cloud experience)

Company IconTempleton & Partners - Innovative & Inclusive Hiring Solutions
Location IconLondon

Python Software Engineer (with AWS cloud experience)Templeton and Partners are looking for Python Software Engineer with AWS cloud experience for our global client.Contract- 12 months inside Ir35...Read More>>.

Posted: October 21st, 2026
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Python Software/Data Engineer

Company IconStanford Black Limited
Location IconLondon

Overview Software/Data Developer - Market leading HFT/Systematic Trading Firm. Compensation: Up to £250k TC. Location: London. WFH: 4 days in office, 1 from home. Responsibilities Join a data-focused team to deve...Read More>>.

Posted: October 21st, 2026
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Software / Platform Engineer (Python, Azure) (SC / NPPV3)

Company IconLa Fosse
Location IconLondon

Software Engineer / DevOps / Platform Engineer – Government Location: Remote Working (UK)Contract: Contract OpportunityClearance: Active SC or NPPV3 Clearance EssentialClient: UK Government...Read More>>.

Posted: October 21st, 2026
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Software Engineer III – GenAI, Python, AWS

Company IconTesting Site - JPMC
Location IconLondon

Market Risk Technology is responsible for providing JP Morgan's Risk Managers with the capability to assess the financial impact of various adverse market scenarios at a firm wide level. This capability covers calculations, scenario analysis, anal...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer | Trading Systems

Company IconSelby Jennings
Location IconLondon

Our client is a technology-driven trading firm operating across global financial markets. They develop and run systematic and market-making strategies spanning multiple asset classes, supported by a sophisticated in-house technology platform built...Read More>>.

Posted: October 21st, 2026
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Python Lead Software Engineer

Company IconAumni
Location IconLondon

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 IP - Network Services, you are an integral part of an agile...Read More>>.

Posted: October 21st, 2026
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Senior SQL/Python Software Engineer

Company IconJPMorganChase
Location IconGlasgow

JPMorganChase in the United Kingdom is seeking a Software Engineer III within Corporate Technology to design and deliver trusted market-leading technology products in a secure, scalable way.You will contribute to architecture, data analysis...Read More>>.

Posted: October 21st, 2026
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Python + SQL Software Engineer

Company IconMultiply
Location IconTipton

Multiply | Python + SQL Software Engineer | On-site | Mauritius We build repricing software that keeps online sellers on top of their competition on 130+ marketplaces. You'll work on pricing algorithms, high-volume data ingestio...Read More>>.

Posted: October 21st, 2026
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Space Tech Software Validation Engineer (Python & Automation)

Company IconIC Resources
Location IconCity of Edinburgh

IC Resources is seeking a Software Validation Engineer in Edinburgh with a hybrid working model. The role focuses on Python-driven test automation to validate SoC devices and related silicon platforms.You will collaborate with IC design, em...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - 12 Month FTC

Company IconMcLaren Racing Ltd
Location IconWoking

At McLaren Racing, software plays a critical role in how we innovate, make decisions, and improve performance on and off the track. We're looking for experienced Python Software Engineers to join our Software & Data Science team on a fix...Read More>>.

Posted: October 21st, 2026
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Senior Software Engineer, Trading (C++/Python)

Company IconDRW
Location IconLondon

DRW is seeking a Software Engineer for their Cumberland Systematic team in London. In this role, you will design and develop critical trading systems while collaborating closely with quantitative researchers and traders. A strong background in C++...Read More>>.

Posted: October 21st, 2026
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Senior Software Engineer — Build Rust/Python Systems

Company IconSmarkets
Location Icon

Smarkets is seeking a Mid-Level Software Engineer to design, develop, and maintain the services powering our prediction markets. You’ll collaborate with engineering managers, technical leadership, and product managers to lead complex technical p...Read More>>.

Posted: October 21st, 2026
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Senior Python Software Engineer - Security Cleared

Company IconSearchability
Location IconLondon

Senior Python Software Engineer - SC / DV CLEAREDNEW PERMANENT OPPORTUNITY AVAILABLESalary: Up to £100,000 baseLocation: LondonWorking Pattern: Hybrid - 2-4 days per week on-site...Read More>>.

Posted: October 21st, 2026
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Senior Python Software Engineer - £90k - £100k

Company IconCreo Recruitment
Location Icon

Senior Python Software Engineer - £90k - £100k Base pay range Senior Software Engineer (Python / AWS) Location: London or Manchester About the Role We’re looking for a Senior So...Read More>>.

Posted: October 21st, 2026
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Associate Software Engineer — Trading Tech (Python)

Company IconJavelin Group
Location IconLondon

Javelin Global Commodities in London is seeking an Associate Software Engineer to join our London-based technology team and help shape the systems at the heart of a fast-moving global commodities business.Sitting at the intersection of comm...Read More>>.

Posted: October 21st, 2026
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Senior Lead Software Engineer - Java & Python (Low-Latency)

Company IconJPMorgan Chase & Co.
Location IconLondon

JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agi...Read More>>.

Posted: October 21st, 2026
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Cyber Software Engineer: High-Assurance Python Specialist

Company IconSearchability
Location IconGreater Manchester

Searchability is seeking a Cyber Software Engineer in Manchester to develop secure software for high-assurance cyber capabilities across defence and national security environments.The role emphasizes Python, with knowledge of C++ and secure...Read More>>.

Posted: October 21st, 2026
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Lead Software Engineering - Java/Python - Risk Data Platform & Strategy

Company IconJPMorgan Chase & Co.
Location IconLondon

Join us and shape the future of risk technology with your expertise in data engineering and software development. You will have the opportunity to push boundaries, innovate, and make a meaningful impact on our business. We value diversity, incl...Read More>>.

Posted: October 21st, 2026
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Senior Software Engineer - Media Buying (Python/Django)

Company IconChannel Factory
Location Icon

Channel Factory is seeking a Senior Software Engineer to join a growing team. You will deliver end-to-end features across the stack, lead architectural decisions, and ensure code quality and performance.The role involves collaboration with...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer | Quant Trading

Company IconSelby Jennings
Location IconLondon

Our client is a technology-driven trading firm operating across global financial markets. They develop and run systematic and market-making strategies spanning multiple asset classes, supported by a sophisticated in-house technology platform bu...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - Factory Flow (Contract)

Company IconMcLaren Racing Ltd
Location IconWoking

McLaren Racing is seeking a Python Software Engineer to join the Software & Data Science team on a fixed-term contract and help deliver Factory Flow, a major technology and business transformation programme.You will design, build and suppor...Read More>>.

Posted: October 21st, 2026
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Senior Python Software Engineer - Security Cleared

Company IconSearchability NS&D
Location IconLondon

SENIOR PYTHON SOFTWARE ENGINEER - SC / DV CLEARED NEW PERMANENT OPPORTUNITY AVAILABLE Salary: Up to £100,000 baseLocation: LondonWorking Pattern: Hybrid - 2-4 days per week on-site...Read More>>.

Posted: October 21st, 2026
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Python Lead Software Engineer

Company IconJPMorgan Chase & Co.
Location IconLondon

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 IP - Network Services, you are an integral part of an agile...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - 12 Month FTC

Company IconMotorsport Network, LLC
Location IconWoking

As a Python Software Engineer, you'll help design, build and support the next generation of software products that underpin our engineering and manufacturing operations. Working as part of the Factory Flow team, you'll contribute to a ma...Read More>>.

Posted: October 21st, 2026
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Software Developer (Python)

Company IconNetcompany
Location IconLeeds

Job Description This is an exciting opportunity with us, which offers you career development opportunities, as well as the opportunity to explore new and cutting‑edge technologies. This role supports the full life cycle of software d...Read More>>.

Posted: October 21st, 2026
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Automotive Embedded Software Engineer (C/C++, Python)

Company IconTata Technologies
Location IconGaydon

Tata Technologies is seeking a Software Engineer to be based at the client’s Gaydon office. The role focuses on developing, integrating and validating embedded automotive software applications that support vehicle functions, diagnostics and cont...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - Hybrid - Remote/Midlands

Company IconEx-Mil Recruitment Ltd
Location IconLeicester

Python Software Engineer (243lw) Defence Tech - Hybrid (Remote/Midlands) - £50,000-£55,000k pa + benefitsAre you an experienced Software Engineer looking for an opportunity to work on technically challenging projects within the Defen...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - 12 Month FTC

Company IconArrow McLaren IndyCar
Location IconWoking

As a Python Software Engineer, you'll help design, build and support the next generation of software products that underpin our engineering and manufacturing operations. Working as part of the Factory Flow team, you'll contribute to a ma...Read More>>.

Posted: October 21st, 2026
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Lead Software Engineering - Java/Python - Risk Data Platform & Strategy

Company IconAumni
Location IconLondon

Join us and shape the future of risk technology with your expertise in data engineering and software development. You will have the opportunity to push boundaries, innovate, and make a meaningful impact on our business. We value diversity, incl...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - 12 Month FTC

Company IconMcLaren Racing
Location IconWoking

At McLaren Racing, software plays a critical role in how we innovate, make decisions, and improve performance on and off the track. We're looking for experienced Python Software Engineers to join our Software & Data Science team on a fix...Read More>>.

Posted: October 21st, 2026
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Embedded IoT Software Engineer: C/Python, PCB & Protocols

Company IconPlatform Recruitment
Location Icon

Platform Recruitment in London is seeking a technically adept engineer with an electronics background to join our hardware/software team. You will work across C#, Python and JavaScript, with hands-on experience in UART, SPI, I2C, Modbus or CAN, an...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - SC Cleared

Company IconSearchability
Location IconCardiff

Python Engineer / Data Engineer - SC ClearedNew Permanent Opportunity for an SC Cleared Python Engineer / Data Engineer with a leading Public Sector Consultancy Location: Cardiff - hybrid working model S...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer - Ubuntu Server Certification

Company IconCanonical
Location Icon

Canonical is hiring a software engineer to join the Server Certification team. The role focuses on Python-based testing tools and hardware certification for Ubuntu Server on enterprise hardware.You will work at the intersection of software...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer & Data Scientist

Company IconCapgemini SE
Location IconStevenage

Capgemini SE is seeking candidates to tackle challenges through software development and data science. The role offers extensive training opportunities in programming, particularly Python, with project involvement ranging from scientific applicati...Read More>>.

Posted: October 21st, 2026
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Python Software Engineer Conversational Ai

Company IconClient Server Limited
Location IconLondon

Python Software Engineer / Developer (Conversational AI) Remote UK to £90k Are you a backend focussed Python Software Engineer looking for an opportunity to progress your career, whilst working remotely on a modern tech stack?...Read More>>.

Posted: October 21st, 2026
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