Software Engineer, Infrastructure

Simular Inc.; California (MO); On-site; USD 90,000 - 130,000; Full time

Job summary

Simular Inc. in California is seeking a backend/infrastructure engineer to design and scale systems for Simular Cloud and our agents. This role will involve ownership of critical backend services and tackling infrastructure challenges in a creative environment.

The ideal candidate will possess strong programming fundamentals and experience with cloud, distributed systems, and CI/CD. You will collaborate closely with product and research teams to turn innovative ideas into production systems.

Qualifications

• Strong programming fundamentals in Python, Go, Rust, or similar.
• Experience with cloud infra, distributed systems, virtualization, and CI/CD.
• Ability to design architecturally sound systems.

Responsibilities

• Design and scale backend systems for Simular Cloud and cross-platform agents.
• Own backend services like APIs, data flows, and deployment pipelines.
• Lead Service refactoring and tackle infrastructure challenges.

Skills

Programming (Python, Go, Rust)

Cloud infrastructure

Distributed systems

Virtualization

CI/CD

Job description

Where multiple locations are listed for this role, the position may be based in any of those locations, with priority determined according to the order of listing.

At Simular, we’re building the next generation of computer user agents - AI systems that can actually use your computer for you. Our backend powers everything from live VM orchestration to agent planning and execution.

We’re looking for a generalist backend/infrastructure engineer who thrives in ambiguity, has strong architectural instincts, and wants to own big, evolving pieces of our system. This isn’t a narrow “DevOps” or “API engineer” role - you’ll be shaping how our platform scales and evolves over the next few years.

What you’ll do

• Design and scale the systems behind Simular Cloud and our cross-platform agents.
• Own critical backend services: APIs, data flows, billing, observability, deployment pipelines.
• Tackle hard infra challenges: VM orchestration, reproducibility, parallel execution, reliability.
• Spot when it’s time to split/refactor services and lead that evolution.
• Explore new directions as the product grows - from microVMs to multi-agent orchestration, fine-tuned model endpoints, or community task galleries.
• Collaborate with product and research to turn ideas into production systems.

You might be a fit if

• You’re a strong programmer with solid fundamentals (Python, Go, Rust, or similar).
• You have experience with some of: cloud infra, distributed systems, virtualization, CI/CD — but more importantly, you can pick up whatever’s needed.
• You think in terms of architecture, not just code: you know when to hack and when to design for the long run.
• You’re comfortable owning big ambiguous problems end-to-end.
• Bonus: you’ve touched GPU scheduling, large-scale ML infra, or scaling SaaS systems.