Full Stack Engineer

BIOS Health Ltd; Cambridge; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Equity

Bonus-based remuneration

Flexible hours

Hybrid work model

Job summary

BIOS Health Ltd in Cambridge, UK is hiring a Full-Stack Engineer to own the frontend, backend, and DevOps for Neurotune. You’ll build a React+TypeScript SPA, Python async services, and a Terraform-managed cloud platform. Expect data-heavy, multi-tenant systems with strong security and scientific visualization.

Join a pioneering neural interface company offering equity, bonus-based remuneration, and flexible hybrid work in a fast-growing team delivering real-world digital health solutions.

Qualifications

• 3+ years of professional full-stack experience owning production web applications end to end
• Solid Python experience with an async web framework
• Production experience with Terraform, Docker and a major cloud (GCP preferred)

Responsibilities

• Own frontend and backend end-to-end: React app, REST surface, PostgreSQL schema, background jobs, and cloud infra
• Design and ship scientific visualisations with researchers
• Own API contracts, testing, and CI/CD pipelines
• Implement streaming responses and server-side cursors for large datasets
• Maintain security, observability, and data isolation in a multi-tenant SaaS environment

Skills

Python

TypeScript

React

PostgreSQL

Terraform

Docker

GCP

SQL

REST APIs

Security

Tools

GitLab CI

GitLab CI/CD

Job description

BIOS is a pioneering neural interface company building the infrastructure on which future neural treatments will be discovered, developed, and delivered. BIOS has developed neural interfaces and AI that, for the first time, can read and write the body’s neural data, or ‘code’, to understand and correct those signals in real-time. BIOS envisions a new field of digital health treatments that use this new data- driven insight from the nervous system to create better, more targeted medicine. Neural digital therapies will use BIOS' software to understand the effects on the nerves, leading to more precise creation of pharmaceuticals and software- delivered treatments direct to the nervous system. For more information, visit: www.bios.health

Joining BIOS means joining an incredibly talented and motivated group of people who share our vision of pioneering an industry. We have a fun and friendly atmosphere but challenge ourselves every day and are committed to the work. We are looking for people who will fit into our diverse, fun and stimulating company team culture, who are focused on overcoming challenges, and want to grow along with the company. Successful candidates will; take incredibly complex problems and work to find elegant, simple solutions; work in an open environment; care deeply about changing the way we treat chronic illness and helping to make real world change; and have a desire and belief in achieving the impossible.

Location: Cambridge, UK (hybrid)

Preferred start date: ASAP

Employment type: Full-time, permanent

Right to work: Permanent right to work in the UK required.

Salary expectation: Competitive salary depending on experience. Also includes equity and bonus-based remuneration

The role:

We're hiring a Full-Stack Engineer to own the frontend, backend, and DevOps function for Neurotune, end to end, including the React app, the REST surface, the PostgreSQL schema, the background-job pipeline, the cloud infrastructure it all runs on, and the deployment.

You’ll be working in:

• A React + TypeScript SPA with a mature component library, scientific visualisation, a small state layer, and a real test suite.
• An async-first Python service with Pydantic, raw SQL over an async PostgreSQL driver, multi-tenant data isolation, a background-task system, and OAuth + JWT auth.
• A managed cloud environment with Terraform for everything, managed compute and PostgreSQL, object storage, secret management, and a CI pipeline you own.

What you’ll do:

Frontend (≈ 40% of your time)

• Own the core web application: planning, study execution, and analysis surfaces.
• Design and ship scientific visualisations together with researchers
• Maintain the API client with its custom retry/auto-relogin behaviour.
• Own frontend quality: tighten linting/formatting, increase test coverage,
• and own the test setup and mock layer.

Backend (≈ 50% of your time)

• Own the REST surface: design new endpoints, own the response envelopes and Pydantic models, and evolve the public contract.
• Write raw async SQL (no ORM) and maintain the data model migration process.
• Own the multi-tenant per-tenant schema model
• Add and maintain background tasks
• Implement streaming responses and server-side cursors for large dataset
• Work with JSONB + GIN indexes, and the streaming scientific-data

DevOps & Platform (≈ 10% of your time)

• Own the cloud infrastructure that runs the web app and services
• Own CI pipeline, deployment, release, security, observability and
• compliance posture for the cloud product

What you’ll bring (must-have)

• 3+ years of professional full-stack experience owning production web applications end to end strict mode, branded types, generics.
• Solid Python experience with an async web framework
• Production experience with Terraform (or similar), Docker and a major cloud — we run on GCP, but AWS/Azure experience is welcome.
• Hands-on experience with managed serverless compute, managed
• Postgres, object storage, secret management, and managed DNS.
• Security mindset: parameterised SQL, secret management, httpOnly
• Multi-tenant SaaS experience (per-tenant schemas, row-level security, data isolation).
• Plotly.js, D3.js, Observable, or another scientific/financial visualisation library.
• Medical device development, clinical, scientific, or other regulated- industry experience (HIPAA, ISO 27001, MHRA, GDPR).
• Familiarity with Tauri, or another webview-shell framework.
• GCP experience,
• CI/CD pipeline ownership: GitLab CI, or equivalent.

Other benefits include:

• Working on world-changing technology with leaders in the field Dynamic, innovative, passionate, entrepreneurial team
• Inclusive company culture
• Flexible hours (outside of core hours)