Senior Software Engineer, ML Infrastructure

Arena
San Francisco
Workplace: RemoteFull timeFunction: Software EngineeringExperience: 5+ yearsSkills: ["Communication","Collaboration","Problem-solving","Leadership"]

Senior Software Engineer (Infrastructure) to design and build scalable real-time data and API infrastructure for Arena Intelligence. You’ll architect low-latency pipelines processing large-scale event streams, ensure data integrity and reliability, mentor engineers, and collaborate with AI researchers and product teams to deliver resilient, extensible systems powering real-world AI evaluations.

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FursaFursa
Arena
Arena
8 months ago

Senior Software Engineer, ML Infrastructure

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 5 hours agoStatus: Live

Job Summary

Senior Software Engineer (Infrastructure) to design and build scalable real-time data and API infrastructure for Arena Intelligence. You’ll architect low-latency pipelines processing large-scale event streams, ensure data integrity and reliability, mentor engineers, and collaborate with AI researchers and product teams to deliver resilient, extensible systems powering real-world AI evaluations.
Location: San Francisco
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering

Key Responsibilities

  • •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.

Pay and Benefits

Equity and Bonus:Equity
Perks:Health InsuranceEquity

Key Requirements

  • •5+ years of software engineering experience, 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
Experience:5+ yearsAIMLInfrastructureReal-time dataDistributed systems
Skills:CommunicationCollaborationProblem-solvingLeadership
Tech Stack:PythonPyTorchDistributed systemsStream processingReal-timeLow-latencyBackend architecture

Company Brief

Arena
LMArena operates a community-driven platform for evaluating and benchmarking large language models via crowdsourced pairwise comparisons and leaderboards, used by researchers and AI labs to measure real-world model performance. ([linkedin.com](https://www.linkedin.com/company/lmarena?utm_source=openai))
Industry: Developer Tools
Company Size: Small (11 to 50 employees)
Growth: Scaleup
Valuation: Unicorn (USD 1B+)
Funding: Series A
Headquarters: San Francisco, United States
Founded: 2025
WebsiteLinkedIn