Senior Full Stack Engineer

This role is suitable for a Senior Full Stack Engineer with 5+ years of experience, ideally in a fast-paced startup environment, who is based in the United States.

The candidate should be skilled in React, TypeScript, Node.js/NestJS, APIs, PostgreSQL, Redis, TypeORM, Tailwind, and continuous deployment, with strong communication, ownership, and product judgment.

They should be comfortable independently delivering end-to-end, user-facing features from requirements and database models through UI development, testing, deployment, system maintenance, refactoring, and cross-functional collaboration.

How would you design a full-stack feature using React, NestJS, TypeORM, and Postgres from requirements through deployment?

I would clarify requirements and acceptance criteria, model the data, define the API contract, implement the NestJS service and TypeORM entities, and build the React UI with appropriate loading and error states. I would add tests, observability, and a deployment plan, then release incrementally through the continuous deployment pipeline.

How do you structure a maintainable NestJS API for a growing healthcare product?

I would organize the API into cohesive modules with controllers, services, repositories, DTOs, and validation boundaries. I would keep business logic out of controllers, use consistent error handling and authorization, and document contracts so frontend and backend teams can work independently.

How would you model and query healthcare-related data with TypeORM and Postgres?

I would identify entities, relationships, constraints, and lifecycle requirements before creating normalized schemas and migrations. I would use appropriate indexes, transactions for multi-step updates, parameterized queries, and carefully reviewed query plans for performance-sensitive paths.

How would you prevent sensitive patient information from being exposed through APIs or logs?

I would enforce authentication, authorization, least-privilege access, input validation, and secure transport throughout the system. Sensitive fields should be minimized in responses, excluded or redacted from logs, encrypted where appropriate, and covered by audit trails and security-focused tests.

How do you manage client-side state and asynchronous data flows in React and TypeScript?

I separate server state from local UI state and define strongly typed API contracts to prevent inconsistent data handling. Components should explicitly handle loading, empty, success, and failure states while avoiding unnecessary requests through caching, invalidation, and predictable update patterns.

How would you build a reusable and accessible interface with React, shadcn, and Tailwind?

I would compose accessible primitives from the custom UI library, keep visual conventions centralized, and use Tailwind tokens consistently rather than duplicating ad hoc styles. I would verify keyboard navigation, semantic HTML, focus management, contrast, responsive behavior, and screen-reader support.

When would you use Redis in this stack, and what risks would you consider?

Redis is useful for short-lived caching, rate limiting, distributed locks, sessions, and queues where appropriate. I would define TTLs and invalidation rules, avoid treating the cache as the source of truth, and design for cache misses, stale data, outages, and serialization consistency.

How would you design a resilient API and deployment process on Heroku?

I would use configuration through environment variables, health checks, structured logging, database migrations, timeouts, retries with backoff, and graceful shutdown behavior. Releases should use staged changes, automated tests, safe migration sequencing, monitoring, and a documented rollback strategy.

How do you improve performance when a React page or NestJS endpoint becomes slow?

I first measure the bottleneck using browser profiling, application metrics, logs, and database query plans instead of guessing. Depending on the cause, I might reduce render work, paginate data, optimize indexes or queries, cache stable results, or move expensive processing off the request path.

How do you approach ownership of an ambiguous feature in a fast-moving startup?

I turn ambiguity into a written proposal with user goals, assumptions, edge cases, technical design, risks, and measurable success criteria. I align quickly with product and design, deliver a small valuable slice, gather feedback from real users, and iterate while maintaining production quality.

Solace is a mission-driven, Series C healthcare startup helping patients navigate the U.S. healthcare system through expert advocacy and better digital tools. As a Senior Full Stack Engineer, you’ll own product workflows end to end, building user-facing features, APIs, database models, and resilient systems while collaborating closely with product and design. The stack includes TypeScript, React, Node.js/NestJS, TypeORM, PostgreSQL, Redis, Tailwind, shadcn, and Heroku. This is a full-time, fully remote role for U.S.-based candidates, offering $150K–$200K and the opportunity to make a meaningful impact while shaping a revolutionary product at a fast-moving startup.