Senior AI Engineer TypeScript Backend

Senior AI Engineer TypeScript Backend

Company

VAAS

Conditions

3 days ago

Skills

Candidate Availability

Required and preferred rules are kept separate and reflect the wording in the original posting.

About the Role

You will design and operate AI agents and TypeScript backend services for regulated decision-making. You will build durable execution, model integrations, guardrails, evaluations, observability, and tests. You will handle personal-data safeguards and collaborate on specifications, ADRs, and documentation.

Requirements

• Strong production backend experience with TypeScript and Node.js
• Experience launching and operating an LLM feature in production
• Experience with domain modeling, versioned schemas, and compatibility
• Experience with distributed systems, idempotency, retries, timeouts, and long-running executions
• Automated testing and observability experience
• Rigorous use and review of coding agents
• Clear written Portuguese and technical English reading

Responsibilities

• Model domains and contracts with versioned schemas
• Develop TypeScript backend services using Node.js or Bun and NestJS
• Integrate language models through tool calling, structured outputs, streaming, and multiple providers
• Build durable execution with retries, idempotency, and resumption
• Implement agent limits, budgets, and autonomy policies
• Design evaluations for quality, cost, and latency
• Build guardrails against prompt injection, data leakage, and tool misuse
• Protect personal data through minimization, masking, LGPD controls, and data residency
• Operate services through metrics, logs, tracing, and shared on-call

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 appointments
• Two monthly psychologist appointments
• Discounted general practitioner and specialist telemedicine appointments
• 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 directors → offer

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