Full Stack Software Engineer

Fiddlie Technology Ltd | London | £35,000-40,000 per annum | Full-time, on-siteAbout FiddlieFiddlie is a contract electronics engineering company providing turnkey product development services to startups and SMEs. We design, prototype, and support manufacturing for innovative hardware products across diverse sectors. Our team of 8 engineers works on challenging projects spanning RF systems, embedded devices, IoT products, and connected hardware.The RoleWe're seeking a pragmatic Full Stack Software Engineer to join our London team. You'll work on web dashboards, mobile apps, embedded interfaces, and backend systems that bring our clients' hardware products to life. This is a hands-on role requiring independence, technical versatility, and the ability to ship working solutions on commercial timelines.You'll be working closely with electronics engineers, collaborating on firmware-software integration, developing user interfaces for hardware products, and building the full stack infrastructure our clients need to launch successfully.RequirementsEssential:Minimum 2 years of professional software development experience (industry roles, not academic projects)Bachelor's degree from a QS Top 100 universityStrong proficiency in TypeScript/JavaScriptProven ability to own projects from requirements through to deploymentRight to work in the UK (we are not offering visa sponsorship for this position)Comfortable working on-site full-time in our London officeHighly Desirable:Experience with React for web applicationsSQL database design and optimizationFlutter/Dart for cross-platform mobile developmentPython for scripting, data processing, or backend servicesC++ for performance-critical applications or embedded/firmware integrationUnderstanding of hardware-software integration (APIs for IoT devices, sensor data handling, BLE/WiFi protocols)Experience working in startup, consulting, or fast-paced project environmentsPortfolio demonstrating shipped commercial productsBeneficial:Familiarity with cloud infrastructure (AWS, Azure, GCP)API design and RESTful servicesDevOps practices and CI/CD pipelinesTechnical writing and client-facing communicationInterest in electronics, hardware, or physical product developmentWhat We ValueWe're looking for someone who is:Commercially focused – understands project constraints, budgets, and delivering value to clientsSelf-directed – can scope work, make technical decisions, and drive projects forward independentlyPragmatic – chooses appropriate solutions over perfect ones; ships working codeCollaborative – works effectively with our hardware team and directly with clients when neededResilient – comfortable with the variety and pace of consulting work across different technical stacksWe appreciate team members who take a practical, results-oriented approach to problem-solving and who thrive in an environment that values merit, accountability, and commercial success.BenefitsCompetitive salary: £35,000-40,000 per annum (dependent on experience)Company pension schemeAXA comprehensive health insurance and travel insuranceUnrestricted access to company facilities for personal projects – including electronics lab, 3D printers, CNC machines, oscilloscopes, network analyzers, and prototyping equipmentExposure to diverse technical challenges across hardware and softwareWork directly on products that ship to marketSmall team environment with direct input on technical decisionsHow to ApplyPlease send your CV, a brief cover letter explaining your interest in the role, and links to relevant portfolio work or GitHub to careers@fiddlie.com.We review applications on a rolling basis and will contact suitable candidates for an initial technical discussion.