Senior Software Engineer, ML Infrastructure

Arena

Senior Software Engineer responsible for architecting high-performance data systems for AI evaluation. Collaborating with cross-functional teams to build scalable infrastructure at Arena Intelligence.

Posted 4/12/2026full-timeBay Area • California • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

Distributed SystemsPyTorch

About the role

Key responsibilities & impact

Architect and scale high-performance, real-time API and data systems
Design and implement low-latency pipelines to process and analyze large-scale event streams
Ensure reliability through robust data integrity, availability, and consistency mechanisms
Mentor and guide engineers on infrastructure best practices, architecture, and performance tuning
Collaborate cross-functionally with AI researchers, product leaders, and engineers to anticipate evolving infrastructure needs and deliver resilient, extensible systems

Requirements

What you’ll need

5+ years of experience in software engineering, with a focus on infrastructure or large-scale data and ML systems.
Deep expertise in distributed systems, stream processing, and scalable backend architecture.
Proven ability to design and operate low-latency, high-throughput, and fault-tolerant systems.
Strong foundation in systems design, performance tuning, and building reliable, fault-tolerant services.
Comfortable in a dynamic, high-ownership, fast-growth environment.
Prior experience with PyTorch model development is a plus.

Benefits

Comp & perks

Comprehensive health and wellness benefits, including medical, dental, vision, and additional support programs.
Competitive compensation and equity aligned to the markets where our team members are based.
Opportunity to work on cutting-edge AI with a small, mission-driven team.
A culture that values transparency, trust, and community impact.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

API designdata systemslow-latency pipelinesevent stream processingdata integrityavailability mechanismsperformance tuningdistributed systemsscalable backend architecturefault-tolerant systems

Soft Skills

mentoringcollaborationcross-functional teamworkanticipating infrastructure needsguidance