24 rust developer jobs found in London, greater london

Role Summary Wagglyn is looking for an experienced QA Engineer / Test Lead to work with the existing engineering team on the testing and release readiness of its MVP trading platform. This is a hands-on contract role for someone who has tested complex financial or real-time systems before. It is not a generic web QA role and not a manual-testing-only role.   Scope The contractor will help define and execute the QA process across the front end, backend services, market data, execution flows, deployment environments and operational readiness. The role involves working with engineering, product and stakeholders to make sure releases are testable, repeatable and safe to promote through UAT and production-like environments. QA here is about proving the system behaves safely when data is live, services reconnect, orders are sent, risk state changes and deployments happen.   Profile ·      Hands-on QA engineer who has tested complex financial or real-time systems ·...

Full Stack Developer - Contract Position - HIRING ASAP Location: London, 3 days in office per week & 2 days remote per week Start Date: ASAP Duration: Till end of September (view to extend thereafter) Daily Rate: £400 - £500 per day outside IR35 Key Responsibilities Delivery focused development support Join the team on a freelance basis to provide additional senior level development capacity when required Take on more complex or time sensitive development tasks within existing systems, working within established patterns and architectures Deliver well scoped features, integrations, and campaign builds without introducing unnecessary changes to core platform architecture Live support & problem solving Provide experienced development support during campaigns, helping diagnose and resolve issues quickly and pragmatically Assist with troubleshooting production issues, identifying root causes, and implementing safe fixes under the direction of the...

ServiceNow Vulnerability Response Developer (Contract) Remote (UK) | Outside IR35 | Initial 6 months | Likely Extension We're looking for an experienced ServiceNow Vulnerability Response Developer to join a large-scale cyber security programme. This is a predominantly remote role with occasional workshops in London. Key Responsibilities Develop and enhance ServiceNow Vulnerability Response capabilities Build integrations with security tooling and automate remediation workflows Configure scripts, flows, dashboards and reporting Work with security, infrastructure and platform teams to improve vulnerability management processes Essential Skills Strong ServiceNow development experience Proven experience with ServiceNow Vulnerability Response (VR) JavaScript, REST APIs and IntegrationHub expertise Experience integrating tools such as Tenable, Qualys, Rapid7, Microsoft Defender or CrowdStrike Good understanding of vulnerability management and CMDB concepts...

Boomi Integration Developer (ERP Programme) Location: Fully Remote UK, with occasional travel to an office Contract Type: Contract Duration: 6 Months Initial IR35 Status: Outside IR35 About the Role We are seeking a highly skilled Boomi Developer with proven experience integrating the ERP environment (Infor LN preferred) to join a digital transformation programme. You will be the core technical lead responsible for designing, building, and deploying robust, scalable integration pipelines between the ERP (Infor LN) and surrounding enterprise ecosystem (including CRM, MES, WMS, and third-party logistics/ 3PL partners). The ideal candidate will not just be a component builder in Boomi, but an integration specialist who understands complex manufacturing/ distribution data flows and can navigate the nuances of Infor LN data structures. Key Responsibilities Design & Build: design, develop,...

SC Cleared JavaScript / TypeScript Developers (Frontend, Backend & Full Stack) – Defence Sector 📍 Fully Remote 💰 £650–£700 per day (Outside IR35) 📅 Initial 6-Month Contract (Rolling Extensions) 🔒 Active SC Clearance Required | DV Preferred We are supporting a leading public sector end client within the defence sector who are looking to engage three experienced Software Developers to join a long-term programme of work. Essential Skills Strong commercial experience with JavaScript and/or TypeScript Experience with React and/or Node.js Frontend, Backend or Full Stack development background Experience working within Agile delivery teams Active SC Clearance (must be currently active) Desirable Current DV Clearance Willingness and eligibility to undergo DV Clearance Previous experience delivering into Defence, Government or wider Public Sector environments Contract Details Outside IR35 £650–£700 per day Fully remote Initial 6-month contract Strong...

Senior Manual QA Engineer (IoT / Firmware) 3 Month Contract | Outside IR35 | c. £375 per day London, ideally 1 day per week in office if possible Talentedge are looking for a well-experienced Manual QA Engineer to help deliver exceptional quality across a range of our clients IoT products. This is a hands-on role for someone who enjoys exploratory testing, uncovering edge cases, and working closely with engineers to ensure products are reliable, intuitive, and enjoyable to use, but is equally comfortable communicating with and guiding a small QA team. What you'll be getting up to: Conduct manual testing across multiple platforms. Design and execute test scenarios that validate real-world customer experiences. Identify, prioritise, and investigate defects, partnering closely with developers to drive resolutions. Create clear test plans, test cases, and quality reports with strong traceability to requirements. Contribute to product design discussions,...

Senior Full-Stack Engineer - 6 Months Contract - up to £400 Per day Outside IR35 - Retail We’re working with a well-established retail business currently undergoing a major internal transformation programme, and they’re looking for a Senior Full Stack Developer to join on a 6 month contract. The business has been operating successfully for over 10 years and combines the stability of an established company with the pace and culture of a start-up environment. Decisions happen quickly, there’s very little hierarchy, and engineers are trusted to own delivery and make a tangible impact. This role will focus heavily on building modern internal applications and operational tooling that support large-scale scheduling, fulfilment, logistics, optimisation and customer service functions across the business. The Role You'll play a key role in developing modern React-based internal applications alongside supporting .NET backend services, helping replace legacy workflows with...

Delivery Lead - Outside IR35 - Contract (Insurance) About the role Delivery Leads are responsible for the successful delivery of our clients’ projects across the full lifecycle, from inception to launch and beyond. Typical project sizes range from 50 to 1,000 days, and our projects span multiple sectors and technologies. On this occasion, you’ll work alongside a client’s Finance function to make sense of their portfolio of change. You’ll help bring together the various Finance and CDO (Chief Data Officer) initiatives, build a shared view of the roadmap, and support the decisions on what order things should be delivered in – weighing each initiative on cost, ease, risk and value. This starts as a portfolio-shaping effort. Once the priorities are agreed, you’ll lead the delivery of that work, keeping it flowing and the team motivated, supported, and happy. Your job is to keep the delivery running smoothly and make sure the client has a positive experience...

Client : Public Sector Location : Hybrid, London or Birmingham, 2 days per week onsite Engagement Type : Contract (Outside IR35) Day Rate : Up to £600 per day depending on experience Clearance : Active SC Clearance required About the role A public sector client needs a Senior Boomi Architect to set the technical direction for a high-profile integration programme. This is the person who owns how integrations get designed across the estate, then stays close enough to the build to keep those standards real. You'll define the architecture and the reusable patterns the wider team delivers against. You'll also stay hands-on where it counts: shaping the complex integrations, unblocking the team, and making the calls that keep business-critical services running. It's a hybrid role. You'll be onsite at either the London or Birmingham office 2 days a week, with the site confirmed during the process. Key responsibilities Own the integration architecture on the Boomi...

Senior AI Engineer (Contract) Rate: £700 / day IR35 Status: Outside IR35 Duration: 6 months (with high likelihood of extension) Location: Hybrid / Remote options available (UK-based) Security Clearance: DV Cleared The Role We are looking for a Senior AI Engineer to design, build, and deploy production-ready GenAI applications and multi-agent systems within secure environments. This role requires a strong hybrid of advanced AI orchestration and robust cloud-native engineering, specifically focusing on scaling workloads via Kubernetes. Because of the nature of this work, you must hold active UK Developed Vetting (DV) security clearance to be considered. Key Responsibilities Agentic Workflows: Design, implement, and optimize multi-agent frameworks and stateful LLM applications. Kubernetes Orchestration: Containerize, deploy, and scale AI models, APIs, and microservices across production Kubernetes (K8s) clusters. Infrastructure &...

Senior Full Stack Developer - .NET/React Outside IR35 Contract Up to £400 per day Initial 3-6 Month Contract | Immediate Start - 1 day a week in London We're working with a well-established retail business currently undergoing a major internal transformation programme and they're looking for a Senior Full Stack Developer to join immediately on an Outside IR35 contract basis. The business has been operating successfully for over 10 years and combines the stability of an established company with the pace and culture of a start-up environment. Decisions happen quickly, there's very little hierarchy, and engineers are trusted to own delivery and make an impact. This role will focus heavily on building modern internal applications and operational tooling that support large-scale scheduling, optimisation and customer service functions across the business. The Role You'll play a key role in developing modern React-based internal applications alongside supporting .NET Back...

React Native Developer Contract London (3 days on-site) Outside IR35 Hybrid - 3 days/week in central London A large multinational business is building out a customer-facing mobile product and needs a React Native developer who can ship, not just maintain. You'll own features end to end across iOS and Android from a single codebase, working alongside an established product and Back End team. What you'll do Build and ship features in React Native (TypeScript) for a live, high-traffic mobile app Work with native modules, you know when JS won't cut it Integrate with secure APIs and the data-handling constraints that come with them Contribute to release pipelines, testing, and app store deployment What we need Strong commercial React Native experience with production apps live in the stores TypeScript, and comfort dropping into native iOS/Android when required Someone who works well in a contract setting: lands quickly, communicates,...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the future of sovereign security, we...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the future of sovereign security, we...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Opening: Join the Mission At ByDesign Secure, we believe that world-class security shouldn't be an afterthought—it should be the foundation. We are an independent, outputs-based consultancy dedicated to solving some of the most complex technology and security challenges within the UK public sector. We are currently supporting a landmark transformation of a cross-government secure IT system, helping to build and modernise critical digital services, cloud platforms, infrastructure capabilities, and workplace technologies that underpin national decision-making. We don't believe in rigid hierarchies or billing by the hour. We are a lean, expert team focused on delivering meaningful outcomes in highly secure environments. If you are passionate about Agile delivery, servant leadership, and helping teams achieve their full potential, we would love to hear...

Job Title: Senior Boomi Developer Client: Public Sector Location: Hybrid London or Birmingham, 2 days per week onsite Engagement Type: Contract (Outside IR35) Day Rate: Up to £600 per day Clearance: Active SC Clearance required About the role A public sector client is seeking an experienced Senior Boomi Developer to join a high-profile integration programme on an initial contract basis. This is a hands-on, end-to-end role covering the design, build, deployment, and ongoing support of integration processes that underpin business-critical services. This is a hybrid role combining onsite collaboration with remote working you'll be based at either the London or Birmingham site for 2 days per week, with the specific site confirmed during the process. Key responsibilities Lead hands-on design, development, deployment, and maintenance of integration processes using the Boomi AtomSphere platform, including Cloud Integration, Application Integration, and API...

Web Developer - (React, TypeScript & C#/.NET) We are looking for a Web Developer with strong React and TypeScript experience and some knowledge of C# and .NET to join a development team on an initial 12-month contract. Responsibilities Develop and maintain web applications using React and TypeScript. Contribute to Back End development using C# and .NET. Create and maintain automated tests. Review pull requests and support code quality standards. Perform integration testing and bug fixing. Update tasks and testing information within Azure DevOps. Produce and maintain technical documentation. Participate in Agile ceremonies including stand-ups, sprint planning, estimation sessions, and retrospectives. Support DevOps pipelines and deployment activities. Attend team meetings as required. Required Skills Commercial experience with React and TypeScript. Knowledge of C# and .NET. Experience with Git and source control. Understanding of...

Web Developer - (React, TypeScript & .NET) - Hybrid - Outside IR35 We are looking for a Web Developer with strong React and TypeScript experience and some knowledge of C# and .NET to join a development team on an initial 12-month contract. Responsibilities Develop and maintain web applications using React and TypeScript. Contribute to backend development using C# and .NET. Create and maintain automated tests. Review pull requests and support code quality standards. Perform integration testing and bug fixing. Update tasks and testing information within Azure DevOps. Produce and maintain technical documentation. Participate in Agile ceremonies including stand-ups, sprint planning, estimation sessions, and retrospectives. Support DevOps pipelines and deployment activities. Attend team meetings as required. Required Skills Commercial experience with React and TypeScript. Knowledge of C# and .NET. Experience with...

React Native Developer – Contract London (Hybrid) | Outside IR35 About the Company Our client is a fast-growing fintech building the next generation of financial products. With a product-first culture and a strong engineering ethos, they're on a mission to make financial services smarter, faster, and more accessible. You'll be joining a lean, high-calibre team where your work ships and your impact is visible. The Role We're looking for an experienced React Native Developer to join our client on a contract basis. You'll be working across a consumer-facing mobile product, contributing to feature development, performance improvements, and technical delivery within an agile environment. This is a hands-on engineering role suited to someone who takes ownership, moves quickly, and holds their own in a strong technical team. What You'll Be Doing Building and shipping features across iOS and Android using React Native Collaborating closely with product,...

Java Developer Location: London (3 days per week onsite) Duration: 12-Month Contract Rate: Up to £300 per day Outside IR35 Start Date: Immediate Start/ASAP We're currently supporting a major global financial services organisation as they continue to grow their engineering teams and are looking to engage multiple Mid-Level Java Developers for long-term contract assignments based in London. This is an opportunity to work within a modern software engineering environment, contributing to the design, development and delivery of enterprise-scale applications used by millions of customers worldwide. Key Responsibilities Design, develop and maintain Java-based applications using Java 11+ Build and enhance scalable microservices and distributed systems Develop and consume RESTful APIs Write clean, maintainable and testable code following engineering best practices Contribute to automated testing and test-driven development initiatives Collaborate...