Full Stack Engineer

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!