High-Performance Systems Engineer (Rust / Go)

High-Performance Systems Engineer (Rust / Go)

Location: LATAM (Remote)

🚀 About Variacode

At Variacode, we connect top-tier tech talent with cutting-edge global projects. We are currently looking for an ambitious, challenge-seeking High-Performance Systems Engineer (Rust / Go) to join a high-performing team building ultra-low-latency, high-throughput critical infrastructure and distributed systems.

Our client's technology is used in 80+ countries by Fortune 500 companies (like Home Depot), allowing millions of users to preview products in their own spaces in real-time. If you want to make a massive impact and work on high-traffic, scalable systems, this is your place!

🎯 The Role

Move beyond interpreted languages and tackle true systems-level engineering. As a High-Performance Systems Engineer, you will own the architectural design and optimization of mission-critical services, mastering direct memory management, massive thread concurrency, and zero-copy networking to deliver sub-millisecond execution at scale.

⚙️ What you will do (Responsibilities):

• Architect and build ultra-low-latency, highly concurrent backend systems and networking infrastructure leveraging Rust and Go.
• Optimize direct memory management, Unsafe Rust patterns, and Go garbage collection (GC Tuning) for peak operational efficiency.
• Design high-performance networking pipelines using Tokio, Goroutines/Channels, gRPC, Protobuf, WebSockets/TCP, and Zero-Copy I/O.
• Integrate and fine-tune high-throughput data stores and caching layers such as RocksDB, ScyllaDB, and Redis internals/modules.
• Execute deep CPU and memory profiling using pprof and eBPF to diagnose and eliminate latency bottlenecks under extreme load.
• Implement fault-tolerant distributed consensus protocols (such as Raft) while establishing global systems engineering best practices.

🔍 What we are looking for:Must-haves (Required):

• Experience: 6 to 8+ years of professional systems engineering experience building high-throughput, low-latency distributed infrastructure.
• Technical Stack & Tools: Rust (Ownership/Borrowing, Unsafe Rust), Go (GC Tuning, pprof), Tokio, Goroutines/Channels, gRPC, Protobuf, Zero-Copy I/O, WebSockets/TCP, RocksDB, ScyllaDB, Redis (internals/modules), eBPF, and Raft consensus algorithms.
• Key Skills: Deep mastery of computer architecture, low-level concurrency models, memory safety, and technical systems leadership.
• Language: Fluent English proficiency with excellent technical and conversational communication skills.

Nice-to-haves (Pluses):

• Linux kernel tracing, custom network driver development, or eBPF optimization experience.
• Active contributions to open-source systems programming, Rust crates, or Go core modules.

🎁 What we offer:

• Opportunity to work with cutting-edge tech stacks and Fortune 500 clients.
• A highly collaborative, innovation-driven, and remote-first global culture.
• Continuous professional growth and career development pathways.
• Highly competitive USD-denominated compensation package tailored to elite systems engineering talent.
• 100% remote flexibility from anywhere in LATAM with aligned US business hours.

📋 What to Expect (Our Hiring Process):

We value your time and believe in a transparent, fast-moving recruitment journey. Here is what our process looks like:

1. Application & AI Screening: Submit your application. Our smart screening tools match your profile against core job requirements.
2. Recruiter Video Call (30 mins): A 1-on-1 video call with a Talent Acquisition Specialist to discuss your background, career goals, and cultural alignment.
3. Variacode Internal Technical Assessment & System Design Interview: A practical technical evaluation followed by an architecture deep-dive conducted by Variacode's internal Technical Lead team, focusing on System Design.

• 💡 Pro-tip for candidates: Be prepared to draw and explain architectural diagrams live during the interview, we recommend practicing beforehand with tools like draw.io or Lucidchart.

1. Client / Partner Interview: Meet directly with the client's engineering or leadership team to align on technical expectations, real-world project challenges, and team synergy.

• 📌 Note: Depending on the client's internal process, they may request an additional client-specific technical assessment or coding exercise during this stage.

1. Offer & Onboarding: Receive your formal offer, sign your agreement, and kick off your onboarding journey with Variacode!