Sr Rust Engineer - Los Angeles, CA (Hybrid)

About R Systems:
R Systems is a leading digital product engineering company that designs and develops chip-to-cloud software products, platforms, and digital experiences that empower its clients to achieve higher revenues and operational efficiency. Our product mindset and engineering capabilities in Cloud, Data, AI, and CX enable us to serve key players in the high-tech industry, including ISVs, SaaS, and Internet companies, as well as product companies in telecom, media, finance, manufacturing, and health verticals. We Are Great Place to Work Certified in 10 countries with a full-time workforce [India, USA, Canada, Poland, Romania, Moldova, Indonesia, Singapore, Malaysia & Thailand]! We are recognized as one of the Best Tech Brands 2024 by the Times Group and India's Top 500 Value Creators 2023 by Dun & Bradstreet.
Company Link:

Job Description:

What you'll do

• Design, build, and ship production Rust services end-to-end from Postgres schema and migrations up through GraphQL and gRPC APIs for tens of thousands of users, with care for backwards compatibility and gated rollout of behavior changes.
• Own features in our cloud GraphQL API: async-graphql schema and resolvers, sqlx queries and migrations (raw, compile-checked SQL no ORM), relationship-based authorization (Ory Keto), search (Meilisearch), and messaging (NATS/JetStream).
• Build and evolve async, concurrent systems with Tokio services, background workers, and streaming APIs that stay correct under load and observable in production.
• Work across gRPC / Protobuf service boundaries (Tonic/Prost), treating published surfaces as backwards-compatibility contracts.
• Contribute to shared foundational crates with wide blast radius, keeping changes narrow and well-tested.
• Extend Strada's peer-to-peer architecture iroh/QUIC transport, WebRTC signaling, TURN, NAT traversal where media transfers directly between machines.
• Depending on your interests and the team's needs, go deep on the GStreamer media pipeline (custom elements, pro codecs, low-latency streaming) or the cloud and data plane (API, storage, search, auth).
• Instrument everything (OpenTelemetry, Datadog, Prometheus) and take part in CI/CD on AWS EKS (Terraform/Terragrunt, GitHub Actions).

What you bring

Must-have (core, non-negotiable)

• Strong production Rust ownership, borrowing and lifetimes, traits, error handling, and a type system used well.
• Solid async Rust (Tokio or equivalent): tasks, channels, streams, cancellation, and reasoning clearly about concurrency correctness.
• Experience designing and operating backend services and their APIs (HTTP / GraphQL / gRPC).
• Production experience with relational databases and SQL (PostgreSQL preferred), including schema design and migrations comfortable with raw SQL, not just an ORM.
• A solid grasp of auth fundamentals OAuth2 / JWT, and RBAC or relationship-based access control.
• At home in a command-line, cloud-native workflow (Docker, CI/CD, some cloud infrastructure exposure), collaborating and reviewing code in a sizable codebase.

Where you could make a big impact

These are areas you can own and go deep on any one is a way to have outsized impact, and a couple can be a specialty in their own right.

• Real-time and networking systems WebRTC (SDP/ICE/TURN), QUIC, NAT traversal, or libraries like iroh.
• Media and streaming GStreamer, professional video codecs (ProRes, RED R3D, Blackmagic RAW), AVFoundation / VideoToolbox, low-latency pipelines.
• Systems-level / OS work daemons and background services (launchd / Windows services), Unix domain sockets and named pipes, virtual filesystems (NFS / FSKit / WinFsp), caching, and content addressing.