Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design, implement, and operate AI agent capabilities and backend services. You will integrate language models, define agent autonomy policies, run evaluations, build security guardrails, write tests and documentation, and monitor production systems through shared on-call responsibilities.
Requirements
- Solid production backend experience with TypeScript, Node.js, and Bun
- Experience deploying and operating an LLM feature, including prompts, tool calling, structured outputs, failures, and cost
- Experience with domain modeling and contracts, including schemas, versioning, and compatibility
- Experience with distributed systems, including idempotency, retries, timeouts, budgets, and long-running executions
- Experience with automated testing and observability
- Clear written communication in Portuguese
- Technical reading proficiency in English
Responsibilities
- Model domains and contracts using versioned schemas as a single source of truth
- Develop backend services in TypeScript using Node.js, Bun, and NestJS within a hexagonal architecture
- Integrate language models through tool calling, structured outputs, streaming, and multiple providers
- Implement limits, budgets, and autonomy policies for agents
- Design and run evaluations measuring quality, cost, and latency
- Build guardrails against prompt injection, data leakage, and tool misuse
- Write tests first within the same pull request
- Operate services through metrics, logs, tracing, and shared on-call
- Collaborate on specifications and architecture decisions with backend and product stakeholders
- Write specifications, ADRs, and documentation
Benefits
- 30 days of paid leave after one year
- Caju meal and transportation allowance for hybrid or onsite workers
- Wellhub
- Conexa telemedicine and Psicologia Viva
- Two monthly nutritionist consultations
- Two monthly psychologist consultations
- Reduced-price general practitioner and specialist telemedicine consultations
- Dasa exam discounts of more than 15%
- Pague Menos pharmacy discounts of 20% to 30%
- Parking allowance
- Birthday-month day off
Hiring Process
Application → screening → HR cultural-fit conversation → technical interview with managers → final interview with leadership → offer