34 python developer jobs found

Key Responsibilities * Develop, test, and maintain high-performance backend applications using Python * Design and build RESTful APIs using FastAPI * Automate deployment, configuration, and infrastructure management using Ansible * Collaborate with DevOps teams to implement and maintain CI/CD pipelines * Manage cloud-based infrastructure and containerized applications (Docker/Kubernetes) * Write clean, efficient, and reusable code following best practices * Troubleshoot, debug, and optimize application performance * Ensure security, scalability, and reliability of systems

Key Responsibilities * Design and build backend components for risk engines, analytics pipelines, and end‑of‑day processing. * Develop high‑performance Python services for modelling, calculations, and data transformation. * Enhance and maintain internal risk platforms aligned with industry frameworks and regulatory expectations. * Collaborate closely with risk SMEs, quants, and technical BAs to refine requirements and deliver robust solutions. * Optimise computation‑heavy workloads and ensure accuracy, stability, and auditability of risk outputs. * Contribute to architectural discussions and technical design reviews. Core Skills & Experience * Expert Python development, particularly in backend and data‑processing contexts. * Proven experience building computation‑heavy or risk‑calculation systems. * Strong understanding of market risk, credit risk, capital, or liquidity concepts. *...

Software Developer - 12 Months Contract - 625/day I am looking to speak to Python Developers, in relation to a 12 months contract on a high profile transformation programme. This is a long-term assignment on one of the most challenging programmes across the Public Sector, and it's not an understatement to say your work will impact the lives of millions across the UK. Details need to remain vague, due to the nature of the assignment, however the central requirements are: Eligible to get a SC Clearance (ideally active for a quicker start) Python AWS CDK Experience of using AI / Prompt engineering to aid development Call me, Alex Manea, at NonStop Recruitment now for a confidential conversation. Contact me on (email address removed) or (phone number removed), please send your CV in word format OR if this does not sound like the opportunity for you, but you are a professional working across the Public Sector, please feel free to get in touch, to see other opportunities we may...

API Developer (Golang/Python) – Financial Services * Inside IR35 * Sheffield (1–2 days/month onsite) A leading financial services organisation is seeking an experienced API Developer to join their team on a contract basis. This is a great opportunity to work on modern, scalable systems within a highly regulated and fast-paced environment. This role would suit a developer who enjoys working on backend systems but is comfortable contributing to full-stack solutions when needed. If you’re looking to make an impact within a major financial organisation, this could be a strong fit. Role Overview You’ll be responsible for designing, building, and integrating high-performance APIs, with a strong focus on Golang (preferred) or Python. You’ll also collaborate with front-end teams, contributing to web-facing components using technologies such as React or Node.js. Key Responsibilities * Design, develop, and maintain robust APIs * Ensure seamless integration across internal...

Software Developer - 12 Months Contract - 625/day I am looking to speak to Python Developers, in relation to a 12 months contract on a high profile transformation programme. This is a long-term assignment on one of the most challenging programmes across the Public Sector, and it's not an understatement to say your work will impact the lives of millions across the UK. Details need to remain vague, due to the nature of the assignment, however the central requirements are: Eligible to get a SC Clearance (ideally active for a quicker start) Python AWS CDK Experience of using AI / Prompt engineering to aid development Call me, Alex Manea, at NonStop Recruitment now for a confidential conversation. Contact me on (email address removed) or (phone number removed), please send your CV in word format OR if this does not sound like the opportunity for you, but you are a professional working across the Public Sector, please feel free to get in touch, to see other opportunities we may...

My Banking client is seeking to recruit a Senior Full Stack Developer (React & .NET Core) on an initial 6 month based in London. It is hybrid and will require 3x days onsite per week. About the Role We are seeking a highly experienced Senior Full Stack Developer with deep expertise in React JS on the front-end and C# .NET Core on the backend. The ideal candidate will have substantial hands-on experience developing scalable applications, strong exposure to cloud-native architectures, with experience in the financial sector. Experience with CI/CD, microservices, and event-driven architectures is essential, and knowledge of Python (pyspark) for data-driven workflows is advantageous Key Responsibilities Design, develop, and maintain full stack applications using React JS, C#.NET Core, and supporting technologies. Build high-performance backend services, RESTful APIs, and microservices with focus on scalability, maintainability, and resilience. Develop responsive, modular,...

Overview: • 5+ years of strong Python development experience (optional Java) with demonstrable experience of having designed and developed complex server-side components. • Experience working in Financial Services specifically within markets in front office derivatives risk systems or pretrade/origination or post trade management systems. • Computer science or equivalent degree • Good understanding of Agile and Lean software development practices and associated tools • Ability to work in a fast paced environment liaising with demanding stakeholders to understand complex requirements, and be able to prioritize and work on issues on own. • Strong communication and presentation skills. Clear, Concise Communication skills, ability to articulate Problem/Solution. • Pricing and Risk knowledge - structure and pricing of derivative products • Derivatives Risk domain knowledge (Greeks and Scenarios) • Equity Derivatives product knowledge (Futures, Options, Convertibles)

Senior Software Engineer (Contract) 6-Month Engagement | Outside IR35 | Up to £475 per day | Hybrid (London / Ipswich) A rapidly expanding SaaS company is seeking an experienced Senior Software Engineer to support their agile delivery team on an initial 6-month contract. This position offers a strong mix of hands-on development and strategic input, with the opportunity to shape system architecture, influence engineering practices, and contribute directly to product evolution. You'll play a key role in designing, building, and improving scalable cloud-native applications, while also guiding team members and promoting high standards across the development lifecycle. Core expertise required: Advanced experience with C# and .NET (Framework and Core) Frontend development using TypeScript, HTML, CSS, and either React or Vue Proven track record with AWS, ideally including serverless architectures (e.g., Lambda) Experience with CI/CD pipelines and Infrastructure as Code (Terraform or...

Junior Data Engineer - Public Sector Contract: Initial 7 months (extension possible) Rate: £310 per day, Inside IR35 Location: Remote with travel to Waterloo (2-3 days per month) Security Clearance: SC‑eligible (5 years UK residency required) I am working with a key consultancy delivering a major UK public sector programme and are looking for a Junior Data Engineer / Scientist to join a mixed delivery team building and operating secure, reliable data platforms that support critical public services.This role is designed for someone early in their data career who wants to develop strong engineering fundamentals in a real production environment. The role - a junior, generalist data engineering position. This is an engineering‑led role, not a specialist or senior position. The team is ideally looking for a generalist in their first few years within data engineering or data science, who is building breadth across data platforms, pipelines and operations. You'll focus on:...

Senior Full Stack Developer (Contract) Outside IR35 | Remote | Up to £600/day Overview  We’re partnering with a specialist software consultancy delivering business-critical platforms across financial services and pensions. They’re looking for a Senior Full Stack Developer who enjoys proper engineering — clean architecture, ownership of solutions, and working alongside experienced senior engineers and QA specialists. This is a hands-on delivery role (no line management, no ticket-factory environments) with meaningful technical influence across the full stack. What you’ll be doing Designing and building end-to-end full-stack solutions in a modern cloud environment Backend development using Python and C# Frontend development with TypeScript and React Working within Azure (Functions, Azure SQL, Service Bus, ADF) Contributing to architecture discussions, technical design, and code reviews Applying pragmatic AI-assisted / agentic engineering practices to improve delivery quality and...

Job Title: Senior Full Stack Developer (React & C#.NET) Contract Length: 12 Months Location: London - 3 Days a week Daily Rate: Circa £650/Day (Inside IR35) About the Role Join our dynamic team as a Senior Full Stack Developer, where your expertise in React JS and C# .NET Core will shine! We are looking for a tech-savvy professional with a passion for building scalable applications within the financial sector. This is an exciting opportunity to work with cloud-native architectures and cutting-edge technologies. If you thrive in a collaborative environment and are eager to make an impact, we want to hear from you! Technical Skills Front-end: Strong proficiency in React.js, JavaScript/TypeScript, Redux/RTK, and modern UI patterns, develop framework is essential Back-end: Expertise in C# .NET Core, REST APIs, and microservices-based development is essential Python (pyspark): Experience with data pipelines and analytics is a plus. Power BI: Familiarity with developing...

Job Title: Senior DevSecOps Engineer Location: London Contract Length: 12 months Working Pattern: Hybrid, Via Umbrella Company Join Our Team! Are you ready to take your career to the next level in a dynamic, fast-paced environment? Our client, a leading financial institution, is seeking a passionate and experienced Senior DevSecOps Engineer to lead the charge in defining and implementing cutting-edge CI/CD and DevSecOps strategies! What You'll Do: As a key player in our client's engineering team, you will: Define & Own: Craft and manage the enterprise CI/CD and DevSecOps strategy to align with security, risk, and governance standards. Architect Solutions: Develop CI/CD approaches that cater to multiple teams and technologies while ensuring quality, security, and scalability. Enhance Cloud Applications: Provide your expertise in building cloud and cloud-ready applications, and support containerized workloads using Docker and Kubernetes. Integrate Security & Compliance:...

Job Title: CRM Full-Stack Software Engineer/Developer Location: Remote (UK) Contract: Full-Time Salary: £(Apply online only) per day Overview We are seeking a talented CRM Full-Stack Software Engineer to support the development and scaling of our modern customer relationship management (CRM) platform. This role involves building and maintaining high-performance, secure, and scalable CRM features across both frontend and backend systems. The ideal candidate will have strong experience with TypeScript, Node.js, React, and cloud-based architectures, along with experience working in microservices environments, building APIs, and managing customer-centric data systems. This position is offered as a remote full-time contract with potential for extension depending on performance and project needs. Project Overview You will contribute to the design and development of a scalable CRM platform used to: Manage customer lifecycle and engagement Store and process customer...

Job Title: Contract Applications Developer – C++ / Qt Location: Colchester Rate: £55 - £60 per hour (indicative, outside IR35) Contract Length: 3–6 months Working Arrangements: Primarily on-site, with some flexibility depending on project phase Overview An established technology company based in Colchester is looking for an experienced Applications Developer to support a range of embedded, GUI-driven software projects. Working within a multidisciplinary engineering team, you will focus on delivering high-quality application features, user interfaces, and on-screen display tools using C++ and Qt, closely integrated with embedded hardware systems. This role is assessed as outside IR35, making it suitable for contractors operating via a Personal Service Company (PSC). Key Responsibilities Develop and enhance GUI and application-level features using C++ and Qt for embedded platforms Build on-screen display tools and front-end components for hardware-integrated applications...

World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit a Principal Thermal Engineer Subcontractor on an initial 12 month contract.   Hourly Rate: £50.00  Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: The role will likely be onsite 3 days per week. Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage onsite interview   Principal Thermal Engineer Job Description: The Mechanical Analysis Group are looking for a Principal Thermal Engineer to join its team in Stevenage. The group consists of over 30 engineers working across a wide spectrum of cutting-edge military systems. Working for an internationally recognised company, you will play a critical role in ensuring that products deliver the necessary performance against key...

Platform Engineer - SCADA Location: Warwick (Hybrid - flexible, onsite when required) Rate: £550-£600 per day Contract: 6‑month fixed-term contract (strong likelihood of extension or transition to permanent) Role Overview We are seeking a Platform Engineer to support and evolve SCADA platforms operating within OT and Critical National Infrastructure (CNI) environments. This role sits within a newly forming SCADA Platform Engineering team and offers the opportunity to work on systems that underpin essential national services. SCADA experience is welcome but not essential - strong Platform Engineers with the right mindset will be supported through structured training. Key Responsibilities SCADA Platform & Application Support Provide day-to-day platform and application support for SCADA systems Ensure platforms, servers, databases, and tooling are secure, stable, and compliant Platform Engineering & Operations Manage platform and server operations, including...

Business Systems Analyst – 6-month contract with potential to extend PLEASE NOTE THIS ROLE IS FOR A BUSINESS SYSTEMS ANALYST AND THE CLIENT WILL NOT CONSIDER BA OR TECH BA PROFILES London hybrid | 2 days onsite Our client is undergoing a major transformation programme which is now at a pivotal stage, where the next phase is for shaping requirements, improving processes and bridging the gap between business need and technical delivery. This is a hands-on role for a Business Systems Analyst who is comfortable working in ambiguity, engaging a wide range of stakeholders and turning complex problems into clear, workable solutions. You’ll need to be confident enough to hold your own with technical teams, but collaborative and curious in the way you work. What you’ll be doing You’ll gather, analyse and document business requirements, then turn them into high-quality functional and non-functional specifications. You’ll map processes and workflows, support solution design, and act as...

PAM Engineer Location: Wokingham Hybrid - 50/50 Duration: role starts with a 6 months contract Rate to SSC Rate - £625 SC CLEARED INSIDE IR35 Role Description: Qualifications Relevant certifications (e.g., CyberArk Defender, CISSP, CISM) Experience in cloud environments (AWS, Azure, GCP) and hybrid infrastructures Knowledge of DevSecOps practices and CI/CD pipeline integration Key Responsibilities Design, deploy, and manage PAM solutions (e.g., CyberArk, BeyondTrust, Delinea) Implement least privilege access models and enforce secure credential management Monitor and audit privileged access activities across systems and applications Integrate PAM tools with SIEM, IAM, and other security platforms Develop and maintain policies, procedures, and documentation for PAM operations Conduct regular access reviews, privilege audits, and risk assessments Collaborate with IT, DevOps, and Security teams to ensure seamless PAM integration Provide technical support and...

Principal Thermal Engineer 12 month contract Based in Stevenage Offering £50ph Inside IR35 Do you have experience carrying out thermal analysis of electronics? Do you have experience with MATLAB/Simulink? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Principal Thermal Engineer, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. Due to the nature of what you will be working on, you will be required to obtain high level MOD security clearance. You will be involved in: Take ownership of delivering packages of thermal analysis work Provide mechanical analysis support to develop designs and deliver thermal performance evidence Deliver analysis evidence in clear reports with...

An opportunity has arisen with my client for a Principal Thermal Engineer to join them on an initial 12-month contract. As the Principal Thermal Engineer you will play a critical role in ensuring products deliver the necessary performance against key thermal requirements. Role: Principal Thermal Engineer Pay: £50 per hour via Umbrella Company Location: Stevenage Contract: 12 Months Hours: Monday - Friday, 37 hours per week Security Clearance: SC to start, DV clearance would be beneficial, UK eyes only project Responsibilities: Take ownership for delivering packages of thermal analysis work. Provide mechanical analysis support to develop designs and deliver thermal performance evidence. Deliver analysis evidence in clear reports with firm conclusion statements. Participate in team meetings and design reviews. Manage workload against time schedules and report progress regularly to stakeholders. Responsible for dealing and collaborating with project stakeholders (internal...