Senior Full-Stack Engineer

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🕒 Março 18

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Hairball

SiteLinkedInTodas as Vagas

11 - 50 funcionários

Fundada em 2021

🤝 B2B

🛍️ Comércio Eletrônico

B2B • eCommerce

A Hairball é uma empresa de consultoria em tecnologia e integração de sistemas que ajuda empresas a automatizar, integrar e transformar processos de negócios utilizando as plataformas NetSuite e Celigo. É especializada em eCommerce, CRM, integrações com cadeias de suprimentos e 3PL, EDI, gerenciamento de pedidos e reconciliação de pagamentos, oferecendo implementações, serviços gerenciados, análises e suporte contínuo para sucesso. A Hairball trabalha com plataformas como Shopify, BigCommerce, Magento, Amazon, Salesforce, HubSpot e diversos sistemas WMS/3PL, para acelerar o retorno sobre o investimento para comerciantes e empresas de médio porte.

Descrição

• We need a senior full-stack engineer to build the multi-tenant platform foundation for a new SaaS product over a 6-month contract engagement. • You will be the primary architect and builder of the core infrastructure. • A junior JavaScript developer on the team will work alongside you, learning the stack and eventually owning day-to-day development after your engagement ends. • The architecture decisions you make in the first 8 weeks will shape this product for years. • Months 1-2: Platform Spine. • Months 3-4: Billing & Integrations. • Months 5-6: Hardening & Handoff.

🎯 Requisitos

• Multi-tenant SaaS architecture: You have personally built (not just contributed to) a multi-tenant application with tenant data isolation. • PostgreSQL Row-Level Security: You have implemented RLS policies in production. • Next.js 14+ App Router: You are current with App Router (not Pages Router). • TypeScript: You write TypeScript fluently, not JavaScript with type annotations bolted on. • Stripe Billing integration: You have wired up subscriptions, handled webhooks with signature verification, and implemented metered/usage-based billing. • Multi-org authentication: You have implemented multi-organization auth (Clerk, Auth0, or similar) in a SaaS product. • Strongly Preferred Experience with Drizzle ORM (or Prisma with willingness to learn Drizzle). • AI/LLM application development — calling LLM APIs, streaming responses, token tracking. • Vercel deployment and optimization. • Experience mentoring junior developers. • Prior work in e-commerce, fintech, or financial data platforms.

🏖️ Benefícios

• Complete architecture spec: A detailed specification covering every subsystem you will build. You are implementing a well-defined plan, not designing from scratch. • Deep domain expertise: The product owner has deep expertise in the target market. You will never be guessing about business requirements. • Working prototype: The backend pipeline and database schema already exist. You are building on a foundation, not from zero. • AI development tooling: Claude Code is available as a pair programmer. • Autonomy: You make the technical decisions within architectural boundaries. No micromanagement. • Weekly video check-in, daily async on Slack.