Senior Software Engineer, Distributed Systems (Rust)Active$254K

Lattice is the software platform behind Anduril's autonomous systems. The Data Distribution team owns how data moves through it: the Distributed Service Bus (DSB), a messaging layer that carries every track, sensor reading, command, and video stream between nodes.

What you'll do

• Messaging semantics. DSB provides pub/sub, reliable request/response, and: ordered bidirectional streams with flow control. You'll design the delivery guarantees, retry and acknowledgement behavior, and backpressure that sit behind each one, and decide what each guarantee costs on a link that drops packets.

• Routing across a changing mesh. Topology changes constantly, and a node may: have several paths to the same destination. You'll work on OSPF-style link-state routing, multi-path link selection, and prefix-based routing, and on keeping routing state convergent when the network splits and rejoins.

• Gossip and state dissemination. Subscription tables, topology, and node: metadata have to propagate across the mesh without flooding it. You'll design and tune gossip protocols and reason about how and when they converge.

• Operating under constrained bandwidth. Some links carry a few kilobits per: second. You'll build priority-based QoS scheduling, compression, and protocol-level optimizations so that the important traffic gets through first.

• gRPC over the mesh. You'll extend our gRPC proxy layer so existing services: can talk to each other over DSB without changes, including service discovery, retries, and timeouts across unreliable links.

• Correctness through simulation. The same production code runs under a: deterministic, manually clocked scheduler, so failures are reproducible. You'll build simulation harnesses and tests that find the bugs that only show up under partitions, reordering, and loss.

What they're looking for

• Production Rust
• Experience with gossip protocols, epidemic broadcast, or peer-to-peer overlay networks
• Familiarity with link-state routing (OSPF, IS-IS) or BGP
• Experience with deterministic simulation, fault injection, or property-based testing of distributed systems
• Experience with systems that run in resource-constrained or intermittently connected environments
• Ability to read packet captures and debug with tcpdump or Wireshark
• Familiarity with Kubernetes and container orchestration