Backend Engineer - Genomic Sequencing & Consumer Health Data Platform

Core Responsibilities

Backend Services & APIs

• Design, build, and maintain RESTful APIs using Node.js, TypeScript, and Fastify.
• Define API contracts and data shapes with the frontend engineer before implementation.
• Implement authentication and authorization using AWS Cognito or an equivalent.
• Build backend services that handle large-scale data requests securely and reliably.

Data Pipelines

• Develop reproducible, recoverable pipelines for large, inconsistent genomic data inputs.
• Write parsing and transformation logic for third-party vendor outputs.
• Harden pipelines against failures so they recover without manual intervention.
• Optimize pipeline performance as data volume grows.

Database & Cloud Infrastructure

• Design PostgreSQL schemas and data models for genomic and health data.
• Architect AWS infrastructure using infrastructure-as-code (CDK or CloudFormation).
• Set up secure storage systems for sensitive healthcare data.
• Collaborate with the frontend engineer on deployment workflows.

Security & Data Governance

• Implement role-based access controls and data encryption for sensitive health data.
• Apply healthcare security and compliance requirements to architecture decisions.

Requirements

Must-Have

• 5+ years of backend engineering experience, including building backend systems from scratch at an early-stage startup.
• Production experience with Node.js and TypeScript building RESTful APIs.
• Built data pipelines that process large, inconsistent data inputs, with reproducibility and failure recovery.
• PostgreSQL schema design and data modeling.
• AWS deployment and infrastructure experience.
• Implemented authentication and authorization systems (AWS Cognito, Auth0, or OAuth).
• English at C1+ CEFR level for daily work with the frontend lead and firm leadership.

Nice-to-Have

• Bioinformatics or genomic data processing experience.
• AWS CDK or CloudFormation infrastructure-as-code experience.
• Fastify framework experience.
• Healthcare or regulated-industry experience.
• Full-stack familiarity with Next.js.