Back End Developer

32Co is disrupting the healthcare space. Our vision is to use technology to help all clinicians deliver the latest innovations in healthcare and improve the standard of care for millions of people.

We’re an award-winning, Tier 1 VC backed Health Technology product solving a multi-billion dollar problem, with backing from the people behind Revolut, City Mapper and Depop. As we expand operations across the UK and further afield, our mission is gaining momentum.

The Role

We are seeking a highly skilled Senior Backend Engineer to support us with our exciting and innovative product roadmap looking ahead. The ideal candidate will have 4-6 years of hands-on experience with strong expertise in building scalable, reliable, and high-performing backend services using Node.js (NestJS), MongoDB, and cloud-native/serverless technologies. You will work closely with cross-functional teams to design, develop, and optimise systems that handle high throughput and mission-critical workloads.

What you’ll be doing:

• Design, develop, and maintain backend services and APIs using Node.js (NestJS framework).
• Build and optimise scalable data models and queries in MongoDB.
• Architect and implement serverless applications leveraging AWS Lambda and the Serverless Framework.
• Integrate and manage asynchronous workflows using Amazon SQS.
• Ensure performance, security, and reliability of distributed systems.
• Collaborate with frontend developers, product managers, and DevOps teams to deliver end-to-end features.
• Participate in code reviews, mentor junior engineers, and contribute to technical discussions/decisions.

Who we are looking for:

• 4-6 years of professional software development experience with Node.js.
• Strong experience with the NestJS framework for building scalable APIs.
• Strong experience with MongoDB (schema design, aggregation, optimisation).
• Proven knowledge of AWS Lambda and Serverless architecture.
• Experience working with Amazon SQS for messaging and event-driven workflows.
• Familiarity with CI/CD pipelines, Git, and DevOps workflows.
• Strong problem-solving, debugging, and system design skills.
• Professional-level English or above.

Nice to have:

• Experience with other AWS services (API Gateway, CloudWatch, IAM).
• Exposure to monitoring/logging tools (e.g., ELK, Prometheus, Datadog).

Why Join Us:

• Opportunity to work on a health technology product solving a multi-billion dollar problem
• Be part of a collaborative and inclusive work environment with a culture of teamwork, innovation and creativity
• Have access to the latest tools and technologies
• Opportunity for professional growth and career advancement
• Join a company seed-funded by top VCs with a multicultural, ambitious, high calibre team.