Location: Cambridge (CB4) Job Type: Permanent Hours: Monday - Friday, 8.30am - 5.30pm, flexitime & hybrid working available with Mondays being office based Salary: from £55000, depending on experience Job Reference: 35907 Polytec are seeking a Full-Stack Engineer to join our Cambridge based client as a key early hire, helping to design, develop and deploy the core web and mobile applications that power their technology. This is a high-impact role for an adaptable, proactive engineer who thrives in fast-paced startup environments, enjoys working across the full stack and takes deep ownership of their work. You'll be a key contributor to the technical strategy, shaping product direction while also delivering hands-on engineering. If you enjoy solving complex engineering challenges and building technology that directly improves lives-this role is for you. Responsibilities: - Design, build and maintain scalable, secure web and mobile applications using Nuxt, Vue and Ionic/Vue - Develop and integrate APIs and workflows across physical devices, mobile apps, cloud infrastructure and frontend systems - Ensure high performance, security, and scalability across all applications - Influence engineering and product decisions as a key early hire, reporting directly to the CTO - Write clean, well-structured, testable code following industry best practices - Debug, optimise and refine existing applications to improve reliability and user experience - Collaborate with clinical, firmware and engineering teams to deliver user-centric solutions - Lead the development of new features and enhance existing functionality - Contribute to architectural decisions and help shape the broader technical strategy Requirements: - 5+ years of full-stack development experience, ideally in a startup or fast-paced environment - 5+ years working with React/Vue, Nuxt/Next, Node.js, TypeScript, PostgreSQL and Redis - 5+ years developing mobile applications using Ionic - Strong experience in API development, authentication and database design (DynamoDB and PostgreSQL) - Demonstrable technical excellence via public demos, project pages, open-source contributions, etc. - Strong problem-solving skills and a detail-oriented approach - Excellent communication and stakeholder management abilities - Ability to work cross-functionally with multiple teams - Must be eligible to work in the UK without sponsorship - Bonus: experience with FastAPI, RabbitMQ, Kafka, DevOps practices, AWS workflows, CI/CD pipelines, distributed systems, or containerised microservices Please contact us as soon as possible for more details or apply below