Systems Engineer (Contract, LATAM)

## About the role We're hiring Sr Systems Engineers in Latin America to work at the core of Nexus's execution stack — contributing to the runtime behind our Layer 1 protocol and the high-performance engine that powers decentralized trading. This is not a typical backend role. You will work on performance-critical systems where microseconds matter, building execution paths that may evolve into core protocol primitives. Your work will directly shape how orders are processed, state transitions are computed, and performance guarantees are achieved across the network. Whether you're a strong mid-level engineer looking to grow into system ownership, or a senior/principal engineer eager to architect high-throughput distributed systems, this role offers the opportunity to build software that runs at the heart of a global execution layer. You'll collaborate closely with protocol, cryptography, and product teams in San Francisco while contributing remotely from Argentina. ## What You'll Do - Design and implement high-performance components in Rust, C++, or Go for Nexus's DEX engine and protocol runtime. - Build low-latency pipelines for order execution, event propagation, and state updates. - Optimize concurrency, scheduling, memory layout, and I/O paths for determinism and throughput. - Contribute to the evolution of execution abstractions that may be enshrined at the protocol layer. - Work with protocol engineers to ensure safety, composability, and consensus compatibility. - Investigate and resolve performance bottlenecks using profiling, tracing, and benchmarking techniques. - Help define standards for reliability, correctness, and high-assurance distributed execution. - For senior/principal candidates: Drive system design decisions, shape execution architecture, and mentor others in performance engineering. ## What We're Looking For - Strong experience with Rust, C++, Go, or other systems programming languages. - Understanding of high-performance or distributed systems (e.g., low-latency engines, runtimes, databases, OS-level concurrency). - Ability to think in terms of execution.