Demo

Staff Engineer

Vybers.ai
San Mateo, CA Full Time
POSTED ON 3/30/2026
AVAILABLE BEFORE 9/24/2026

We’re hashtag#hiring a Staff Engineer, Tech Lead – Agentic AI System at Vybers πŸš€

Sharing the full role details below πŸ‘‡


Staff Engineer, Tech Lead – Agentic AI System

Stealth-stage AI startup | Remote / Bay Area | Full-time


About Us

We're a preseed-stage startup building an AI simulation platform & infrastructure layer that brings human-context and causality to multi-agent systems. Our thesis: give rationality to AI, have humans in the most critical position of feedback loop.

You'd join a small, high-leverage founding team β€” product engineering, AI/backend, model serving, and product design with tasteβ€” reporting directly to the founder/CEO.


The Role

We need a Staff Engineer who lives and breathes the agentic AI infrastructure stack β€” someone who's built or deeply contributed to systems involving agent orchestration, evaluation pipelines, trace observability, and guardrail frameworks. You'll own the verification infrastructure and the agent runtime layer powering our AI simulator.


What You'll Do

- Architect and ship core verification modules: causal graph construction, failure detection, decision replay, and audit tooling

- Design eval and trace pipelines for multi-agent systems β€” structured logging, decision path replay, counterfactual simulation

- Build guardrail infrastructure: contradiction detection, loop detection, stale-data flagging, stability scoring

- Own the agentic runtime stack β€” agent orchestration, tool use, memory, and inter-agent communication

- Shape our Python SDK (decorator-pattern, < 1hr integration target)

- Set technical direction alongside a small team shipping fast


You Bring

- 6 years in software engineering, 2 years deep in AI/ML infrastructure or agentic systems

- Hands-on experience with agent frameworks and tooling (e.g., LangChain/LangGraph, CrewAI, AutoGen, or similar)

- Familiarity with eval/trace/observability tooling (e.g., LangSmith, Braintrust, Arize, MLflow, or equivalent)

- Experience building guardrail or verification systems for LLM/agent pipelines

- Strong Python; bonus: Go or Rust for performance-critical paths

- Comfortable with PostgreSQL, Redis, and event-driven architectures

- Startup DNA β€” you ship, you iterate, you own outcomes


Nice to Have

- Background in causal inference, DAG-based reasoning, or formal verification

- Experience with geospatial systems (PostGIS, H3)

- Published work or open-source contributions in agent reliability or AI safety tooling


Why Us

- Ground floor of a company building both the simulation layer and the verification layer for the agentic era

- Direct impact β€” your code is the product

- Small team, zero bureaucracy, founder-led engineering culture

- Competitive equity salary; seed-stage upside


πŸ“© Apply: Send a note GitHub/resume to career@vybers.ai

If you know someone who’d be a great fit β€” feel free to share πŸ™Œ

hashtag#ai

Salary.com Estimation for Staff Engineer in San Mateo, CA
$106,902 to $125,718
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Staff Engineer?

Sign up to receive alerts about other jobs on the Staff Engineer career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$85,996 - $102,718
Income Estimation: 
$111,859 - $131,446
Income Estimation: 
$110,457 - $133,106
Income Estimation: 
$105,809 - $128,724
Income Estimation: 
$122,763 - $145,698
Income Estimation: 
$101,387 - $124,118
Income Estimation: 
$119,030 - $151,900
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Not the job you're looking for? Here are some other Staff Engineer jobs in the San Mateo, CA area that may be a better fit.

  • Wonder Studios San Francisco, CA
  • Staff Engineer, Full Stack Web-Based Transmedia Creation Suite Location: San Francisco Bay Area (Remote) Type: FTE Salary Range: $180,000-200,000 equity Ab... more
  • 5 Days Ago

  • Shipt San Francisco, CA
  • Impact As a Staff Engineer on the Core Integrations team at Shipt, you will act as a pivotal technical leader and architect, defining the future of the hig... more
  • 23 Days Ago

AI Assistant is available now!

Feel free to start your new journey!