Software Engineer, Agent Infrastructure

Simular; Singapore; Hybrid; SGD 110,000 - 190,000; Full time

Job summary

A tech company specializing in AI systems is seeking a backend/infrastructure engineer in Singapore. This role involves designing scalable systems for their cloud platform, owning critical backend services, and addressing complex infrastructure challenges. Ideal candidates are strong programmers with experience in cloud infra and distributed systems, and possess an architectural mindset. The position requires ownership of ambiguous problems as the platform evolves.

Qualifications

• Strong programming fundamentals in relevant languages.
• Experience with cloud infrastructure, distributed systems, or similar.
• Ability to tackle ambiguous problems effectively.
• You’re comfortable owning big, ambiguous problems end-to-end.
• Bonus: exposure to GPU scheduling, large-scale ML infra, or scaling SaaS systems.

Responsibilities

• Design and scale systems for Simular Cloud and agents.
• Own backend services like APIs and data flows.
• Address complex infrastructure challenges such as VM orchestration.
• 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.

Skills

Strong programming skills (Python, Go, Rust)

Cloud infrastructure experience

Distributed systems knowledge

CI/CD familiarity

Architectural thinking

Problem ownership

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.