Software Engineer
- Location
- San Francisco, CA · On-site
- Job type
- Full-time
- Level
- Mid-level
- Listed
- 22 days ago
Skills & highlights for this role
- LLM agents
- agentic systems
- evaluation harnesses
- AWS
- Kubernetes
Also useful
- infrastructure as code
- fintech
- SOX compliance
The Opportunity
The interesting problem is not getting an agent to test a control once. It is knowing whether it was right across hundreds of controls, for customers whose methodologies all differ, where the ground truth is a senior auditor's judgment rather than a label in a dataset. Building the harness and the evaluation that make that tractable is the core of this role, and it would be yours to own.
What You'll Do
- Own the agent harness at the core of the product: the workflows, checkpoints, and evaluation that keep long-horizon agents reliable across hours of testing
- Design and own the backend services and APIs that carry evidence from ingestion, through analysis, to auditor-ready output
- Build integrations with the systems our customers keep evidence in: cloud infrastructure, identity providers, ticketing systems, ERPs, and more
- Design the data models and system architecture that have to hold up as our customer base and control volume grow
- Write code and design systems with security and data integrity in mind, given the sensitivity of the evidence our customers share with us
- Partner directly with our customers to craft and ship the features that matter most to the people actually doing the testing
What We’re Looking For
- Experience building on LLMs and agentic systems: harnesses, long-horizon agents, evals, or resilient workflows that survive contact with messy real-world input
- Experience building enterprise SaaS products that handle sensitive customer data
- Comfort working across the stack: solid backend fundamentals (APIs, data modeling, distributed systems) plus enough frontend fluency to ship a feature end to end
- Experience with AWS, Kubernetes, and infrastructure as code
- Experience in fintech, audit, governance, risk, compliance, or another regulated environment
- A track record of high ownership at an early- or growth-stage startup, where you shaped not just the code but the product and the process around it
About Petual
Petual is the AI-powered control tester for the modern enterprise. Our agents test whether a company's financial, operational, and technology controls actually work, and trace every conclusion to its source.
The hard part isn't speed. It's being right. External auditors re-perform our work, so precision on sample 1 has to equal precision on sample 400, and an agent that can't support a conclusion has to say so rather than guess. We're backed by Andreessen Horowitz; the team comes from Stripe, Retool, and Lyft; and public companies already run their SOX programs on Petual.
From Petual's careers page, first listed on Rolev.ai on October 17, 2026. Rolev.ai is not the employer.
How Rolev.ai helps with this application
Rolev.ai is a job search and application tool for US job seekers. For this Software Engineer role at Petual, it shows how your resume fits, tailors your resume to the posting, and prepares the application for you to review.
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Common questions
Where is the Software Engineer job at Petual located?
This Software Engineer position at Petual is located in San Francisco, CA (On-site). Always check Petual's application page for specific state eligibility or relocation policies.
What qualifications are required for Software Engineer at Petual?
For the Software Engineer role, Petual highlights experience with LLM agents, agentic systems, evaluation harnesses, AWS, Kubernetes. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.
How do I apply for the Software Engineer position at Petual?
This listing links directly to Petual's Ashby application page. You can apply directly on Petual's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.