Lead/Senior Rust Engineer

About this role

Lead Rust Engineer
Brazil (100% Remote) • Engineering • B2B Contract
About the role
A US-headquartered software product development company (300+ people across the US, LATAM and Europe) is hiring a Lead Rust Engineer for a long-term engagement with a leading US healthcare SaaS client. You’ll own the technical direction of the service and API layer of a next-generation data platform, building new services in Rust (with some C#) while parts of the current platform still run on Ruby.
What you’ll do

• Set technical direction and own architecture and API design for the new service layer.

• Build and maintain backend services and APIs, primarily in Rust.

• Migrate existing C# and Ruby clients to the new API surface with minimal disruption.

• Lead code quality through reviews and work closely with client engineering leads.

Must have

• 8+ years of backend experience building production services and APIs, ideally with tech lead experience.

• Commercial Rust experience with async services (Tokio, Axum or Actix).

• Working knowledge of Ruby.

• Strong API design skills (REST/gRPC, versioning, backward compatibility).

• Solid SQL, relational databases, testing, CI/CD and observability.

• Experience driving AI-assisted/agentic coding practices across a team.

• Fluent English.

Nice to have
C#/.NET, API migrations or strangler-pattern rewrites, data sync or ETL, and regulated industries.
Strong Lead/Principal Engineers or Architects without direct Rust experience are also encouraged to apply.
What we offer
100% remote, long-term B2B contract (40h/week, 9 AM–5 PM BRT core hours), and a flexible policy of up to 40 unpaid days off per year.
Originally posted on Himalayas