Senior Systems Engineer - High-Performance Blockchain

Nexus; United States; Remote; USD 140,000 - 210,000; Full time

Job summary

Nexus is seeking Sr Systems Engineers to join a remote, 12‑month contract from Latin America. You will work on the core execution stack behind our Layer‑1 protocol and high‑performance DEX engine, shaping how orders are processed and state transitions are computed.

We welcome mid-level to senior/principal engineers who can drive system design decisions, mentor others, and collaborate with global protocol and cryptography teams.

Qualifications

• Strong experience with Rust, C++, Go, or other systems programming languages.
• Understanding of high-performance or distributed systems (low-latency engines, runtimes, databases, OS-level concurrency).
• Ability to think in terms of execution flows, concurrency models, resource lifecycles, and system invariants.
• Practical experience profiling CPU, memory, and synchronization overhead.
• Comfort working close to runtime constraints where performance, determinism, and resilience are critical.
• Excellent communication skills in Business English (spoken and written).

Responsibilities

• Design and implement high-performance components in Rust, C++, or Go for Nexus’s DEX engine.
• 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.

Skills

Rust

C++

Go

Distributed systems

Profiling

English communication

Job description

Nexus is seeking Sr Systems Engineers to join a remote, 12‑month contract from Latin America. You will work on the core execution stack behind our Layer‑1 protocol and high‑performance DEX engine, shaping how orders are processed and state transitions are computed.

We welcome mid-level to senior/principal engineers who can drive system design decisions, mentor others, and collaborate with global protocol and cryptography teams.