7 results for Net Developer Winforms in Maidenhead, Windsor and Maidenhead

Python Developer

London, London
remote
Contract
- GBP / Yearly
Robert Half Technology are assisting a market leading financial services to recruit a Python Developer on an initial 12 month FTC basis. London based - hybrid working This role is primarily to provide AI integration support and guidance to a team of around 25 investment, operations and support personnel. We are in the early stages of this process so the role will be well positioned to help guide how the integration looks. The second function of the role is providing support, when needed, to the Python and SQL based reporting suite used by the operations team.Role<ul><li>The Python Developer will lead the AI integration project, focusing on data security and controls appropriate for the needs of the different teams within the business</li><li>Train staff to use AI tools both efficiently and securely</li><li>Work with our outsourced IT provider to ensure that we stay up to date with developments in AI security and integration</li><li>Ensure the smooth running of existing Python/SQL reporting framework.</li></ul>The AI enablement Engineer will have experience with the following technologies/tools:<ol><li>Docker, Postgres, REST APIs, SFTP, Websockets</li><li>OOP + Asynchronous Design Patterns</li><li>PowerQuery/DAX/M</li><li>Industry standard libraries used in software development within finance (pandas, numpy, scipy etc)</li><li>MS Graph</li></ol>* Experience with the following technologies is nice to have: <ol><li>NodeJS</li><li>Grafana</li><li>VBA</li><li>OpenAI API</li><li>Cross OS file shares</li></ol>Profile The Python Developer will have experience with the following:<ul><li>Data processing and transformation</li><li>Report maintenance/production</li><li>Management of automated processes</li><li>Use/management of virtual machines</li><li>Investigation of reporting breaks/inconsistencies with an eye for detail</li><li>The ability to quickly adopt and use the stack of previous developers</li><li>Experience with migrations is a nice to have</li><li>Develop new reporting processes needed by the operations team</li></ul>Company<ul><li>Market leading financial services organisation </li><li>Initial 12 month FTC</li><li>Global presence with offices in London </li><li>hybrid working </li></ul>Salary & BenefitsThe salary range/rates of pay is dependent upon your experience, qualifications or training.Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/S2F6aW0uSGFzc2FuLjU4NzU2LjEwOTIzQHJoaS5hcGxpdHJhay5jb20.gif">
2026-04-14T16:05:46Z

React Developer

London, London
remote
Contract
- GBP / Yearly
Robert Half Technology are assisting a global market leading e-commerce organisation to recruit a React Developer on a 6 months contract basis. Hybrid working - London basedAs a React Developer, you will build features that enable the platform to operate globally, supporting localisation, performance, and seamless integration with backend systems.Role<ul><li>The React Developer will be responsible for implementing multi-language UI and localisation frameworks</li><li>Supporting currency display and regional UX behaviour</li><li>Building features across Live and seller platform surfaces</li><li>Integrating with backend services via GraphQL</li><li>Contributing to consistency across web and mobile experiences</li><li>Build and own frontend features end-to-end</li><li>Ensure performance, usability, and responsiveness</li><li>Collaborate closely with backend and product teams</li><li>Contribute to improvements in frontend systems and patterns</li></ul>Profile<ul><li>Strong experience with React and modern web frameworks</li><li>Familiarity with Next.js, Vite, and GraphQL</li><li>Experience building user experiences tied to transactions, pricing, or eCommerce flows is strongly preferred</li><li>The React Developer will be able to work across multiple systems and evolving requirements Code-Writing Contribution Develops production-ready UI features with increasing complexity and ownership.</li></ul>Company<ul><li>Global market leading e-commerce organisation with offices in London</li><li>Hybrid working - London based </li></ul>Salary & BenefitsThe salary range/rates of pay is dependent upon your experience, qualifications or training.Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/S2F6aW0uSGFzc2FuLjg4NzUzLjEwOTIzQHJoaS5hcGxpdHJhay5jb20.gif">
2026-04-22T10:14:04Z

Junior Python Developer

City of London, London
remote
Contract
- GBP / Yearly
Robert Half Technology are assisting a market leading financial services organisation to recruit a Junior Python Developer on a 12-month fixed-term contract basis. Hybrid working - London based (initially 5 days onsite, moving to 4 days per week).<h3 data-end="397" data-start="385" data-section-id="1gtvw36">Role</h3>* The Junior Python Developer will support and maintain a suite of Python-based processes and reporting tools used across the business. * Provide day-to-day support for existing data pipelines, APIs, and reporting frameworks, troubleshooting issues and resolving incidents. * Work across a technology stack centred on Python, Postgres, Docker, REST APIs, and local databases. * Assist with the management and optimisation of automated processes to improve reliability and efficiency. * Support infrastructure including virtual machines and data workflows. * Collaborate with internal teams to enhance reporting and operational processes. * Contribute to the integration and ongoing use of AI tools across the organisation, including supporting controls and best practices. * Help improve team efficiency through the effective use of technology and automation. * Work alongside internal and external teams to ensure systems are maintained and developed in line with business needs. * Over time, gain exposure to and contribute towards AI-focused initiatives as the role evolves.<h3 data-start="1495" data-end="1510" data-section-id="no9zkd">Profile</h3>* The Junior Python Developer will have commercial experience with Python or strong demonstrable project experience. * Experience or exposure to Postgres, REST APIs, and Docker is highly desirable. * Understanding of data processing, transformation, and automated workflows. * Exposure to supporting or maintaining systems, with a willingness to learn and take ownership. * Familiarity with object-oriented programming principles. * Strong problem-solving skills and attention to detail. * Interest in AI tools and emerging technologies is advantageous. * Ability to learn quickly and work within an existing codebase. * Good communication skills and ability to work collaboratively within a team. * Any exposure to financial services or regulated environments is beneficial but not essential.<h3 data-start="2324" data-end="2339" data-section-id="1fhqj4x">Company</h3>* Market leading investment management organisation based in London * Specialist in small and mid-cap equity investments * Collaborative environment with a growing focus on technology and AI integration * Hybrid working model<h3 data-end="2600" data-start="2575" data-section-id="o1bymo">Salary & Benefits</h3>The salary range/rates of pay is dependent upon your experience, qualifications or training.Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/QWxmaWUuUm93ZXR0Ljk5MjI5LjEwOTIzQHJoaS5hcGxpdHJhay5jb20.gif">
2026-04-20T07:17:34Z

React Developer

London, London
remote
Contract
- GBP / Yearly
Robert Half Technology are assisting a market leading financial services organisation to recruit a React Developer on a contract basis. Hybrid working - London basedRole<ul><li>The React developer will be working on the build of a product-grade React & Typescript application from greenfield through to a maintainable, globally scalable, and secure product</li><li>Greenfield build to production: build a production-grade React & TypeScript application from zero to a maintainable, scalable platform</li><li>Data-dense UI delivery: Deliver high-quality UI for dashboards, tables/grids, filtering/sorting, drilldowns, forms, and multi-step workflows</li><li>State & data patterns: implement robust client-state and server-state patterns including loading/error states, retries, resilience, caching and invalidation</li><li>Performance engineering: Drive render efficiency, bundle size control, code splitting, virtualisation for large datasets, network efficiency, and instrumentation/observability</li><li>API contract collaboration: Work with backend engineers on predictable API contracts via BFF (pagination, aggregation shapes, response models, error semantics)</li><li>Security-by-design delivery: Apply secure front-end practices (auth/session hygiene, safe client-side data handling, dependency hygiene)</li><li>Accessibility & usability: Ensure keyboard support, focus management, ARIA where appropriate, and strong empty/error states for complex UIs</li><li>Quality discipline: Maintain a strong quality bar through code review, automated tests, CI quality gates, and release readiness</li><li>Delivery pipelines: Contribute practically to build tooling, CI checks, deployment considerations and environment configuration</li><li>Documentation: Produce concise, proper documentation for key decisions, patterns and non obvious implementation details</li></ul>Profile<ul><li>The React Developer will have significant commercial experience within financial services, building modern React applications (hooks, composition patterns, controlled/uncontrolled components, state lifting, modularisation</li><li>Demonstrated ability to operate as a senior engineer: strong judgement, proactive risk management, pragmatic delivery, and high code quality standards</li><li>Proven ability to design front-end architecture for long-term maintainability (module structure, feature boundaries, shared UI patterns, conventions)</li><li>Comfortable establishing foundations early (linting/formatting, project structure, testing strategy, patterns for API access, error handling, and observability hook)</li><li>Experience shipping complex interface: tables/grids, dashboards, rich filters, multi-step workflows, and interaction-heavy UIs</li><li>Familiarity with performance constraints caused by large datasets and frequent UI interactions (virtualisation, event handling)</li><li>Strong TypeScript capability across: typed component APIs (props/contracts), shared domain models/DTOs, safe typing around API responses, error and async flows, sensible user use of generics/utility types without over-engineering</li><li>Proven judgement selecting and implementing state patterns: clear separation of UI state vs server state, caching & invalidating strategies, avoiding unnecessary re-render and state leaks</li><li>Experience with modern tooling such as TanStack Query</li><li>Strong awareness of security/performance best practices in client data fetching and caching (handling auth/session, sensitive data considerations, preventing accidental data leakage, safe error handling)</li><li>Experience writing and maintaining meaningful automated tests with a strong judgement on what to test, keeping suites fast and avoiding brittleness</li><li>Evidence of improving real-world performance (bundle analysis, render optimisation, code splitting, virtualisation)</li><li>Ability to keep UI responsive under heavy interaction patterns and large datasets.</li><li>Security-conscious delivery</li><li>Security-minded development practices (OWASP awareness, auth/session hygiene, dependency hygiene)</li><li>Comfortable operating in environments where confidentiality, disciplined change control and auditability matter</li><li>Data visualisation (interactive charts; performance-conscious rendering)</li></ul>Company<ul><li>Market leading financial services organisation with offices in London</li><li>Hybrid working - London based </li></ul>Salary & BenefitsThe salary range/rates of pay is dependent upon your experience, qualifications or training.Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/S2F6aW0uSGFzc2FuLjEyNjE1LjEwOTIzQHJoaS5hcGxpdHJhay5jb20.gif">
2026-04-02T14:22:40Z

Full Stack Engineer (React, TypeScript, AWS)

St. Albans, Hertfordshire
remote
Permanent
- GBP / Yearly
Full Stack Engineer (React, TypeScript, AWS) - Growing Company! Perm Role OnlyHybrid Working: 2 days in the office and 3 days from homeLocation: North West London / Hertfordshire (near Watford) A growing firm is hiring a Full-Stack Engineer to join a small, high-impact team building modern, scalable web applications. This is a hands-on, greenfield role with full ownership from idea to production, working closely with the business to deliver tools that make a real impact.What you'll do<ul style="direction: ltr; unicode-bidi: embed; margin-top: 0in; margin-bottom: 0in;" type="disc"><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Build full-stack applications using React, TypeScript, and AWS</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Own projects end-to-end</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Work directly with stakeholders to deliver solutions</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Develop intuitive frontends and scalable backend services</li></ul>What you'll need<ul type="disc" style="direction: ltr; unicode-bidi: embed; margin-top: 0in; margin-bottom: 0in;"><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">3+ years' experience building web applications</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Strong React and TypeScript (full-stack)</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Experience with Node.js and SQL/PostgreSQL</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Exposure to AWS, Docker, and CI/CD</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Comfortable working autonomously</li></ul>Why join<ul style="direction: ltr; unicode-bidi: embed; margin-top: 0in; margin-bottom: 0in;" type="disc"><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Greenfield development</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Small team with real ownership</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Modern tech stack</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Strong transport links, parking, and Thameslink access into Central London</li></ul> 2 stage process and fast turnaroundExcellent Benefits (25 days holidays, Healthcare, Pension, Training allowance and including a bonus) Robert Half Limited is in partnership with this client.Important Note:This is a UK based role, Applicants must have full rights to work in the UK. We are unable to consider fully remote, B2B or B2C contractors. APPLY NOW!!!Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/dG9ueS5rb3lyYXR0eS42MTEzNy4xMDkyM0ByaGkuYXBsaXRyYWsuY29t.gif">
2026-05-01T05:55:40Z

Mobile Engineer

London, London
remote
Contract
- GBP / Yearly
Robert Half Technology are assisting a global market leading e-commerce organisation to recruit a Mobile Engineer on a 6 months contract basis. Hybrid working - London basedThe Mobile Engineer will build and scale mobile features that support international users and align closely with web and backend systems.Role<ul><li>The Mobile Engineer will be responsible for building mobile features for live interactions and purchasing flows</li><li>Supporting localisation including language, currency, and regional UX</li><li>Ensuring parity between mobile and web experiences</li><li>Integrating with backend systems via GraphQL</li><li>Optimising performance and reliability in real-time environments Key Responsibilities</li><li>Develop and maintain mobile features across iOS and Android</li><li>Collaborate with backend and frontend teams</li><li>Improve app performance and stability</li><li>Contribute to consistent cross-platform user experiences</li></ul>Profile<ul><li>The Mobile Engineer will have strong experience with iOS (Swift) and/or Android (Kotlin)</li><li>Experience integrating with GraphQLAPIs</li><li>Experience building user experiences tied to transactions, pricing, or eCommerce flows is strongly preferred</li><li>Ability to work in fast-paced, evolving environments Code-Writing Contribution Delivers production mobile code supporting real-time, localised user experiences.</li></ul>Company<ul><li>Global market leading e-commerce organisation with offices in London</li><li>Hybrid working - London based </li></ul>Salary & BenefitsThe salary range/rates of pay is dependent upon your experience, qualifications or training.Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/S2F6aW0uSGFzc2FuLjA4MTY3LjEwOTIzQHJoaS5hcGxpdHJhay5jb20.gif">
2026-04-22T14:14:11Z

Junior Data Engineer

London, London
remote
Contract
- GBP / Yearly
Robert Half Technology are assisting a global Pharmaceutical organisation to recruit a Junior Data Engineer on a 6 month contract basis - Hybrid Working (1 day per week onsite) - London based The Junior Data Engineer will You play a key role in turning data into actionable insights, supporting decision-making, and helping bridge the gap between technical teams and the wider business.Role<ul><li data-end="853" data-start="734" data-section-id="osrdfu">The Junior Data Engineer will work closely with business stakeholders to understand data requirements and translate them into actionable insights</li><li data-section-id="czxq2w" data-start="854" data-end="916">Develop and maintain dashboards and reports using Power BI</li><li data-end="979" data-start="917" data-section-id="r7krkm">Extract, manipulate, and analyse data using SQL and Python</li><li data-section-id="1vokxbm" data-start="980" data-end="1039">Communicate findings clearly to non-technical audiences</li><li data-end="1168" data-section-id="sq6d6d" data-start="1040">Support data validation, testing, and deployment processes across different environments (Development, Test, and Production)</li><li data-start="1169" data-section-id="ghxtb2" data-end="1260">Collaborate with cross-functional teams to improve data quality and reporting processes</li></ul>Profile<ul><li data-section-id="bu4ea1" data-start="1285" data-end="1391">The Junior Data Engineer will have a degree in a relevant field (e.g. Data Analytics, Mathematics, Computer Science, Economics, or similar)</li><li data-end="1478" data-section-id="3er2u0" data-start="1392">0-2 years' experience in a Data Engineer role (including internships or placements)</li><li data-end="1537" data-start="1479" data-section-id="1zui6p">Strong stakeholder management and communication skills</li><li data-start="1538" data-section-id="11d4nfx" data-end="1598">Experience with Power BI for reporting and visualisation</li><li data-section-id="11d4nfx" data-start="1538" data-end="1598">Exposure to Snowflake and/or DBT</li><li data-end="1645" data-section-id="1c4a2d9" data-start="1599">Working knowledge of SQL for data querying</li><li data-end="1703" data-section-id="7i5duf" data-start="1646">Basic to intermediate Python skills for data analysis</li><li data-section-id="1ybmxsb" data-start="1704" data-end="1793">Clear understanding of data lifecycle environments: Development, Test, and Production</li><li data-end="1852" data-section-id="mgddxc" data-start="1794">Strong attention to detail and problem-solving mindset</li></ul>Desirable / Nice to Have<ul><li>Start ASAP</li><li>6 Month contract </li><li>hybrid working - 1 day per week onsite in London</li></ul>Company<ul><li>Global Pharmaceuticals organisation</li><li>Hybrid working - 1 day per week onsite </li><li>Outside IR35</li></ul>Salary & BenefitsThe salary range/rates of pay is dependent upon your experience, qualifications or training. Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/S2F6aW0uSGFzc2FuLjkwMzk1LjEwOTIzQHJoaS5hcGxpdHJhay5jb20.gif">
2026-05-05T11:01:18Z