Senior Backend Engineer (Go)

Stack

Responsibilities

• ▹Design and build production-grade backend microservices and APIs in Go
• ▹Implement resilient fallback and routing logic across providers (limits, uptime, KYC eligibility) with feature-flagged rollout and safe rollback paths
• ▹Partner with the fraud detection flow and onboarding/KYC integration to keep transaction and onboarding flows compliant and observable
• ▹Contribute to FSDs, technical design docs and delivery estimates; break down work into forward-compatible increments and track open dependencies
• ▹Design reliable, auditable and secure systems with strong observability and operational workflows
• ▹Help raise the bar on backend engineering standards through code review, technical guidance and mentorship of squad members

Requirements

• ▹5+ years of software engineering experience
• ▹Strong backend engineering expertise, particularly with Go
• ▹Experience building production-grade APIs and distributed systems, including event-driven / webhook-based integrations with third-party providers
• ▹Solid understanding of system reliability, security and auditability, especially for money-movement or transactional systems
• ▹Ability to work through ambiguity: reverse-engineer existing flows, freeze interfaces early, and design for parallel delivery when dependencies aren't fully built yet
• ▹Comfortable working cross-functionally with product, compliance, operations and external provider/partner teams
• ▹Startup mindset with strong ownership and execution ability
• ▹Experience with cloud infrastructure and modern engineering workflows (AWS, containers, relational databases, streaming/messaging)

Nice to have

• ▹Experience integrating payment providers / payment rails and reasoning about redundancy, provider failover and reconciliation
• ▹Familiarity with PIX and the Brazilian payments landscape, including Central Bank regulatory requirements and named virtual accounts
• ▹Experience with KYC/KYB, AML, transaction monitoring, sanctions screening or fraud/risk tooling
• ▹Experience in crypto, stablecoins or Web3 infrastructure (e.g. BRL ↔ USDC / stablecoin conversion flows)
• ▹Experience decoupling tightly-coupled systems into provider-agnostic, adapter-based architectures
• ▹Spanish language skills to coordinate with local providers
• ▹Experience with AWS (ECS Fargate, Aurora/PostgreSQL), Kafka, Redis, Kubernetes or Terraform

Soft skills