About the Company

Nexus is creating the technological backbone for verifiable finance — a financial world where each trade, order, and settlement can be cryptographically proven on-chain.

The company is developing a DEX-centric Layer 1 blockchain engineered for the AI-driven economy, fueled by distributed idle compute power and validated through zero-knowledge proofs. The mission: build a financial infrastructure that’s transparent, scalable, and accessible to everyone.

Backed by top-tier investors including Lightspeed, Pantera, Dragonfly, and SV Angel, Nexus recently secured $25M in Series A funding to accelerate this vision.

Role Overview

Nexus is seeking Systems Engineers based in Latin America, specifically in Brazil, to join the core execution stack team. You’ll be working at the heart of Nexus’s runtime — designing and optimizing critical components that power decentralized trading at scale.

Unlike traditional backend development, this position requires a hands-on approach to protocol design and systems optimization. You’ll help shape the consensus layer, execution environment, and RPC frameworks that underpin Nexus’s Layer 1 blockchain.

This is a chance to work on high-performance systems where microseconds matter — ideal for engineers passionate about low-level optimization, distributed architectures, and verifiable financial primitives.

Key Responsibilities

Architect and optimize components for the DEX engine and protocol runtime using Rust, Go, or C++.
Build and fine-tune all layers of the blockchain protocol — consensus, execution, and RPC infrastructure.
Create low-latency pipelines for real-time order execution and state propagation.
Develop new financial primitives and integrate them at the protocol level.
Optimize for determinism, memory management, concurrency, and throughput.
Collaborate with protocol and cryptography engineers to ensure safety and composability.
Identify and resolve performance bottlenecks using advanced profiling and tracing techniques.
For senior engineers: take ownership of architectural design, mentor peers, and lead optimization initiatives.

Preferred Qualifications

Strong foundation in systems programming — writing robust, modular code in complex environments.
Proficiency in Rust, or equivalent experience in C++/Go focused on performance-critical applications.
Understanding of high-performance computing, distributed systems, or low-latency infrastructures.
Ability to reason about execution models, resource lifecycles, and system-level concurrency.
Experience with profiling tools, benchmarking, or CPU/memory optimization.
Strong analytical mindset with attention to detail and clear communication skills.
Familiarity with competitive programming or problem-solving under constraints is an advantage.

Bonus Expertise

Experience in matching engines, databases, compilers, or blockchain runtimes.
Knowledge of lock-free concurrency, zero-copy systems, or cache optimization.
Exposure to protocol engineering, consensus mechanisms, or transaction ordering.
Contributions to open-source systems projects or experience in formal verification frameworks.

Why This Role Matters

You’ll directly influence the performance of a Layer 1 blockchain built for global-scale finance.
Every optimization you make impacts the speed and reliability of decentralized markets.
You’ll have the freedom to own system components, evolve into a lead role, or shape execution architecture.
Join a team that values deep technical mastery, first-principles thinking, and verifiable impact.

🔖 Curated by ArtofBlockchain.club
This job listing is part of our soft-launch curation for blockchain professionals exploring verifiable, research-driven roles in the Web3 ecosystem.
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