About Us:

Luna is a health intelligence company. Our wearables and LifeOS platform build a working model of your body, and turn it into a plan for your day. Luna Ring and Luna Band read continuous biomarker signals, from sleep and recovery to heart rate variability, circadian phase and menstrual cycle. LifeOS combines that with your nutrition, supplements, blood panels and daily context to build a plan for your day: what to do, and when to do it. Luna ships to 150+ countries, and our work has been recognised by the global tech press and international design and innovation awards.

We're grounded in science, driven by data, and occasionally powered by questionable coffee choices. But above all, we're united by a shared mission: to reimagine how wearable tech can help people know themselves better and push their potential further.

About the role:

Our team is looking for a hands-on Senior Engineer/Tech Lead to own the technical direction of our backend platform. You will design and build scalable services, guide a team of engineers, and take end-to-end ownership from architecture through deployment and operations. This is a player-coach role: you will still write code every day while setting the technical bar for the team.

Total Experience: 5 - 10 years

Must have:

- 5+ years of software engineering experience, primarily on backend systems.

- Bachelor's or Master's degree in Computer Science or a related field from a Tier 1 or Tier 2 institution.

- Strong hands-on expertise in Node.js (TypeScript is a plus).

- Solid grounding in relational databases (PostgreSQL / MySQL): schema design, indexing, query optimisation.

- Production experience with MongoDB and Redis.

- Working knowledge of Kubernetes and containerised deployments.

- Hands-on DevOps experience on AWS or Azure: compute, networking, IAM, managed databases, CI/CD pipelines.

- Track record of leading technical design and mentoring engineers, formally or informally.

- Strong fundamentals in system design, distributed systems, and API design.

Good to have:

- Python experience for scripting, data pipelines, or services.

- Exposure to AI/ML: integrating LLM APIs, building RAG or agentic workflows, or working with ML teams on productionising models.

- Infrastructure as code (Terraform, Pulumi, CloudFormation, or Bicep).

- Experience with message queues and event-driven architectures (Kafka, RabbitMQ, SQS).

- Experience with observability stacks (Prometheus, Grafana, Datadog, OpenTelemetry).

- Prior experience in a fast-growing product company or startup.

Who you are:

- You lead by example and are comfortable being the most hands-on engineer in the room.

- You communicate clearly with technical and non-technical stakeholders alike.

- You balance long-term architecture with shipping iteratively.

- You take ownership of outcomes, not just tasks.

What you will get:

- To Work on a cutting edge healthtech brand recognized globally

- Competitive Pay

- Medical insurance

- Friends and Family discount on all LUNA products