# Raindrop Launches Agent Simulations Following $50 Million Series A

**Author:** Zero G Talent
**Published:** 2026-11-06
**Category:** aerospace-engineering
**Tags:** yc-hiring, ai observability, machine learning, software engineering, sales

[Read on Zero G Talent](https://zerogtalent.com/blog/raindrop-launches-agent-simulations-following-50-million-series-a)

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[Raindrop](https://zerogtalent.com/ai-companies/raindrop) has released its Simulations platform in public beta, allowing developers to test prompt edits, model upgrades, and new tools in a reconstructed production environment before deploying AI agents. The launch follows a Series A funding round led by CRV that brought the San Francisco company's total funding to $50 million. Previous backer Lightspeed Venture Partners, Y Combinator, and individual researchers from OpenAI, Anthropic, and Thinking Machines also participated in the financing.

Founded in 2023, Raindrop acts as monitoring infrastructure for autonomous AI products. The company's platform reads agent execution traces to detect semantic anomalies—such as hallucinated responses, improper tool usage, and loop failures—before users notice them. Raindrop counts Vercel, Framer, Clay, and Fortune 100 companies among its enterprise customers.

## Reconstructing environments for pre-deployment testing

Traditional evaluations rely on pre-written test cases that only catch failure modes developers anticipate. As AI agents handle multi-day workflows and thousands of tool calls, unforeseen failure modes become harder to catch through static tests.

Raindrop's new Simulations platform addresses this by running live agent code inside isolated sandboxes built from production traces, as reported by [The New Stack](https://thenewstack.io/raindrop-simulations-ai-agents/). For each tool call, the simulator generates responses grounded in historical production data, maintains consistency throughout the run, and calculates a simulation fidelity score to signal how closely the sandbox matches real-world conditions. During early access, customers and internal teams ran more than 33,000 simulations across 1,700 pull requests.

The platform applies Raindrop's production anomaly detection directly over simulation runs, surfacing unexpected shifts in agent behavior before code changes reach production, according to [Business Wire](https://finance.yahoo.com/technology/ai/articles/raindrop-announces-series-50m-total-190300152.html).

## Led by repeat founders and Apple UI engineering alumni

Raindrop was co-founded by CEO [Zubin Koticha](https://zerogtalent.com/people/zubin-koticha), [Alexis Gauba](https://zerogtalent.com/people/alexis-gauba), and CTO [Ben Hylak](https://zerogtalent.com/people/ben-hylak).

[Zubin Koticha](https://zerogtalent.com/people/zubin-koticha) and [Alexis Gauba](https://zerogtalent.com/people/alexis-gauba) previously co-founded Opyn, a decentralized finance options platform that processed over $15 billion in volume before being acquired by Coinbase. Both studied at UC Berkeley. [Ben Hylak](https://zerogtalent.com/people/ben-hylak) spent four years on Apple's Human Interface team building visionOS, having previously worked in robotics and avionics. The founders started Raindrop after hitting silent agent failures in production while building a coding agent during their time in Y Combinator's W24 batch, as detailed by [Pulse 2.0](https://pulse2.com/raindrop-15-million-seed-funding/).

Raindrop's technical team includes former security and machine learning engineers from Square, Robinhood, Segment, Semgrep, Socket.dev, Airtable, and DoorDash.

## Engineering and go-to-market roles in San Francisco

Raindrop is hiring across engineering, research, sales, and operations to expand its platform and scale enterprise coverage. All positions are based onsite at the company's San Francisco headquarters.

On the core product and machine learning side, Raindrop is hiring a [Founding Research Engineer](https://zerogtalent.com/ai-jobs/raindrop/founding-research-engineer-120317) ($200,000 - $300,000) to build testing systems and custom detection models. The team is also hiring a [Backend Engineer](https://zerogtalent.com/ai-jobs/raindrop/backend-engineer-86079) ($200,000 - $300,000) and a [Product Engineer](https://zerogtalent.com/ai-jobs/raindrop/product-engineer-65649) ($200,000 - $300,000) to work on sandbox environments and pull-request integrations, alongside an [ML Engineer](https://zerogtalent.com/ai-jobs/raindrop/ml-engineer-86080) ($200,000 - $300,000).

For deployment and customer technical operations, the team is recruiting a [Forward Deployed Engineer (FDE)](https://zerogtalent.com/ai-jobs/raindrop/forward-deployed-engineer-fde-97728) ($150,000 - $230,000) to assist enterprise deployments across complex codebases.

To support go-to-market expansion, Raindrop is hiring an [Account Executive](https://zerogtalent.com/ai-jobs/raindrop/account-executive-102883) ($120,000 - $140,000) and a [Sales Development Representative](https://zerogtalent.com/ai-jobs/raindrop/sales-development-representative-103341) ($70,000 - $110,000). The company is also recruiting a [Founding Recruiter](https://zerogtalent.com/ai-jobs/raindrop/founding-recruiter-92605) ($150,000 - $200,000) to grow the San Francisco team.

## Open roles at Raindrop

| Role | Location | Work Mode | Salary |
| --- | --- | --- | --- |
| [Founding Research Engineer](https://zerogtalent.com/ai-jobs/raindrop/founding-research-engineer-120317) | San Francisco | Onsite | $200,000 - $300,000 |
| [Sales Development Representative](https://zerogtalent.com/ai-jobs/raindrop/sales-development-representative-103341) | San Francisco, CA, US | Onsite | $70,000 - $110,000 |
| [Account Executive](https://zerogtalent.com/ai-jobs/raindrop/account-executive-102883) | San Francisco, CA, US | Onsite | $120,000 - $140,000 |
| [Forward Deployed Engineer (FDE)](https://zerogtalent.com/ai-jobs/raindrop/forward-deployed-engineer-fde-97728) | San Francisco, CA, US | Onsite | $150,000 - $230,000 |
| [Founding Recruiter](https://zerogtalent.com/ai-jobs/raindrop/founding-recruiter-92605) | San Francisco, CA, US | Onsite | $150,000 - $200,000 |
| [Product Engineer](https://zerogtalent.com/ai-jobs/raindrop/product-engineer-65649) | San Francisco, CA, US | Onsite | $200,000 - $300,000 |
| [ML Engineer](https://zerogtalent.com/ai-jobs/raindrop/ml-engineer-86080) | San Francisco, CA, US | Onsite | $200,000 - $300,000 |
| [Backend Engineer](https://zerogtalent.com/ai-jobs/raindrop/backend-engineer-86079) | San Francisco, CA, US | Onsite | $200,000 - $300,000 |

[See all open roles at Raindrop](https://zerogtalent.com/ai-companies/raindrop)

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*Source: [Zero G Talent](https://zerogtalent.com), the job board for space, defense, AI, robotics and frontier-tech companies.*