Mid/Senior Backend Engineer

2 semanas atrás

São Paulo, São Paulo, Brasil Braintrust Trabalho remoto Freelance Tempo inteiro

Join to apply for the Mid/Senior Backend Engineer (Contractor) role at Braintrust .

2 weeks ago Be among the first 25 applicants.

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About the Project

Sellhub is a fast-growing digital platform for creating online stores for digital assets and goods.

We are building a robust, modular SaaS platform for e-commerce, community tools, and digital payments. Our monorepo includes event-driven services, REST and tRPC APIs, advanced analytics, payment integrations (Stripe, PayPal, Crypto), and rich user dashboards. We ship fast, value clean architecture, and work in a modern Typescript/Node.js environment.

Stack Highlights:

  • Node.js (Typescript, Express, Next.js)
  • PostgreSQL (via Drizzle ORM, Knex)
  • REST, tRPC, and event-driven microservices
  • Payment integrations: Stripe, PayPal, Crypto
  • Cloudflare, Docker, Github Actions
  • Modular monorepo with strict code guidelines

Your Responsibilities

  • Lead development and refactoring of backend APIs (REST/tRPC) and core business logic
  • Architect and optimize database schemas, queries, and migrations (PostgreSQL)
  • Integrate and manage third-party payment providers (Stripe, PayPal, Crypto, etc)
  • Drive test coverage and reliability for mission-critical services
  • Contribute to DevOps and CI/CD improvements (Github Actions, Docker, Cloudflare Workers)
  • Document your decisions and leave the codebase better than you found it

What We're Looking For

  • 5+ years experience building backend systems (Node.js/Typescript strongly preferred)
  • Solid grasp of PostgreSQL, schema design, and query optimization
  • Deep experience with API development (REST/tRPC)
  • Payment integrations with Stripe/PayPal (bonus for Crypto or MoR experience)
  • Familiar with Docker, Github Actions, and modern cloud infra
  • Track record of leading/mentoring engineers in a collaborative remote environment
  • Clear communicator, async-friendly, comfortable in a fast-paced team

Nice-to-haves

  • Experience with event-driven or microservices architecture
  • Familiarity with Cloudflare Workers or edge computing
  • Prior work on SaaS/marketplace, fintech, or digital product platforms
  • Open-source contributions or public tech blog
Seniority level
  • Mid-Senior level
Employment type
  • Full-time
Job function
  • Engineering and Information Technology

This job posting appears active and relevant. No indicators of expiration are present.

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