Full Stack Engineer — Trusted Support to Senior Engineer (Part-time, Fixed-Term)

Remote (anywhere)

About the client

The client builds inclusive, scalable digital health and wellbeing products that make a real impact. Fully distributed since 2020, they collaborate with global teams to deliver tools that improve lives.

The role

The client seeks a part-time Full Stack Engineer to act as a trusted backup to a senior engineer, ensuring continuity, reliability, and high-quality delivery. The role involves maintaining system stability, performing second-line code reviews, safeguarding data security, and supporting critical company configurations—within agreed SLAs.

You’ll work on a digital health platform focused on cancer screening and early detection, improving access, uptake, and patient experience. Accuracy, reliability, and security are paramount.

Responsibilities

• Maintain up-to-date knowledge of the codebase, infrastructure, and roadmap.
• Perform second-line code reviews for sensitive or high-impact deployments.
• Provide technical coverage and resolutions during critical incidents (within business hours).
• Ensure system architecture and data models meet security and integrity standards.
• Assist with onboarding and urgent company/product configurations.
• Collaborate with PMs, designers, and developers on releases and change management.
• Help maintain a low bug-to-deployment ratio as system complexity grows.

Tech stack

• Frontend: React.js, Tailwind CSS, Radix UI
• Backend: Node.js, Express, Remix, Prisma, SQLite
• Infra/DevOps: Azure (roadmap), Linux (Ubuntu), Docker
• PaaS (near-term need): Experience with modern PaaS such as Heroku, Railway, or Render is strongly preferred in the short term.
• Strong backend and architecture skills; security-conscious engineering mindset.
• Experience working to SLAs or in mission-critical support environments is valued.

Qualifications & experience

• Proven full-stack experience delivering production systems with the stack above (or close equivalents).
• Demonstrable strength in backend architecture, reliability, and secure data handling.
• Hands-on with incident response, code review, and change/release processes.
• Comfortable in Linux/Docker environments; understanding of cloud-native practices.
• Bonus: Prior experience in digital health, regulated environments, or data privacy frameworks.
• Bonus: Azure experience for future migration.

Engagement details

• Contract: Fixed-term, 6 months (potential to extend).
• Time commitment: Part-time — minimum 1 day per month, up to 3 days per month when covering incidents.
• Availability: Flexible, with some overlap in core business hours with the senior engineer; dependent on any critical issues to resolve (within business hours only).
• Location: Remote (anywhere).

Why you’ll love working with the client

• Fully remote work with flexible hours.
• Contribute to products that improve health equity and wellbeing.
• Play a key role in reliability, security, and smooth delivery at scale.

How to apply

Submit your CV/LinkedIn/GitHub and a short note on relevant PaaS experience (Heroku/Railway/Render) and SLA/incident work. Applications are handled by Tribes on behalf of the client.

Diversity, equity, and inclusion

Tribes is committed to diversity, equity, and inclusion. We welcome applicants from all backgrounds and do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital or veteran status, or disability status. If you need adjustments during the process, let us know and we’ll make it work.