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SEBASTIAN OLIVER

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Software engineer and serial founder in New York. I build applied AI systems at scale and start companies when I see something broken. Four startups, 40K+ users across products. UVA CS & Econ. I like hard problems and shipping things that work.

Currently
  • Joining Ramp — AI Solutions, Mar 2026
  • Building AI-native enterprise finance from zero
  • Based in New York, NY

VENTURES

Vahalla + Technical interview prep, reimagined

A platform where you practice like the real interview. Monaco-powered IDE in the browser, progressive multi-level challenges, AI-enabled coding that mirrors modern interviews, and whiteboard-style system design with AI evaluation. 50+ problems, community-created content. Free to start.

vahalla.dev ↗︎
Julie AI + Find anyone, anywhere, powered by AI

An autonomous expert discovery agent for consulting, PE & VC. Server-side agent using MCP with tools and subagents to search 500M+ profiles, triple-verify emails (<1% bounce rate), and schedule expert calls within 48 hours. Final round at Sequoia Arc & A16Z Speedrun. Pilots at McKinsey & Bain.

julieai.dev ↗︎
RoomMe + AI-powered roommate matching for young adults

A platform that connects a disjointed housing market. AI matching, social verification, in-app chat. Built with Flutter, Next.js, and Firebase. Led a team of 5-8, raised capital, negotiated six-figure contracts. 40K+ users, 5-star ratings, 3M+ social views. Named Most Disruptive Startup by Poets&Quants. Featured by UVA Darden and McIntire.

roomme.app ↗︎ App Store ↗︎

EXPERIENCE

AI Solutions Engineer @ Ramp

New team, new org, building from zero. A pure AI team building self-maintaining products, core agentic tech, and the bridge between Ramp's platform and enterprise client needs. Working with companies like Airbnb, SpaceX, Robinhood, Groq, Cursor, and Twilio. The goal: $10M ARR by EOY 2026, $100M by EOY 2027 — building the underlying product that makes the whole motion scale exponentially. $32B fintech, $1B+ ARR growing 100% YoY, 60K+ customers.

Software Engineer @ Amazon Bedrock

Scaled inference infrastructure for Anthropic models with exabytes of data. Built a $200M cost optimizer for global LLM compute using Integer Linear Programming. Ingested 100+ petabytes of inference metrics monthly. Integrated Llama 4, Sonnet 3.7, DeepSeek into Bedrock Marketplace. Led a $10M ARR Managed Ethereum solution serving the EU, Apple, and Nestle.

Consultant @ Deloitte Consulting

Won 2nd in a nation-wide Google GenAI Hackathon (200+ participants). Led a $50M digital health initiative for the government. Coordinated adoption of a digital health standard across 26,500+ labs and 6,100 hospitals with the FDA, CDC, and ONC. Developed a $75M national security proposal.

BA, Computer Science & Economics @ University of Virginia

SOCIALS ↗︎

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