Delta AI
Full Stack / AI Founding Engineer | ONSITE SF Bay Area
hn · ONSITE SF Bay Area · $120-140k
Jose is an exceptional match: he's a proven founding engineer with direct experience shipping full-stack AI products end-to-end (Addie), strong proficiency in TypeScript, Next.js, React, Node.js/FastAPI, and PostgreSQL, and deep expertise in conversational AI systems and real-time voice interactions. His architecture-level thinking, proven ability to work solo or lead small teams, and experience with LLMs, WebRTC, and scalable infrastructure align perfectly with Delta AI's needs. The main gap is no explicit mention of monorepos or GitHub Actions CI/CD experience, though his infrastructure background (Docker, Kubernetes, Terraform, Jenkins) suggests he'd pick these up immediately.
Hook: You've built real-time conversational AI at scale with WebRTC and LLMs—Delta AI is looking for a founding engineer to do exactly that for scenario-based training, and your Addie experience is almost a direct match.
Missing: GitHub Actions CI/CD (has used Jenkins and Terraform but not explicitly GitHub Actions), T3 Stack experience, E2E testing framework experience (Playwright, Cypress), Monorepo tooling (Turbo, Nx) - not mentioned in CV
Sent (1)
Hi, Delta AI's scenario-based training platform is close to what I've spent the past year building. At Addie, I'm the sole engineer behind a real-time AI voice product: WebRTC + OpenAI Realtime API at sub-200ms latency, thousands of concurrent sessions, serving students in 10+ countries. That's the same conversational-AI-roleplayer problem you're solving for high-stakes practice. On the full-stack side, I've shipped three Next.js products end to end with TypeScript, Node.js, and Postgres, owning API design, schemas, and architecture. I ship daily leaning on Claude Code, and I've built for expensive-failure domains before — emergency response for FEMA/NIST, an 8M-user crypto wallet. I'm in the Bay Area (Brentwood) and comfortable with the founding-engineer scope: product, infra, and on-call at once. Happy to share more or chat whenever works. Best, Jose Oliveros chinnno15@gmail.com
Posting
Delta AI | Full Stack / AI Founding Engineer | ONSITE SF Bay Area | $120-140k + 1-1.5% equity + benefits (flexible on comp) Delta AI is building an AI-powered, scenario-based training platform where trainees practice high-stakes conversations like sales calls, negotiations, leadership moments, and cross-cultural exchanges against conversational AI roleplayers capable of realistic speech and real-time interaction. We're dual-use, serving both U.S. government and private-sector customers. As a founding engineer, you'll touch the whole stack: front-end UIs, APIs, database schemas, system architecture, working in daily with our CTO to shape product and technical direction with the opportunity to grow into a leadership role as we scale. We're looking for someone who's shipped full-stack apps independently or on a team, is proficient in TypeScript, React, Node.js, and SQL, and thinks naturally in terms of API design and system architecture. You should be comfortable with Git, monorepos, and CI/CD (GitHub Actions). Bonus if you're familiar with T3 Stack, OpenTelemetry, and E2E testing. We ship daily and lean hard on coding agents like Claude Code to move fast, so experience developing alongside them is a big plus. We are in the process of raising our seed round and looking to hire within the next month. We are looking for someone remotely in the Bay Area, but are open to those who live outside of the region. We do not sponsor visas now or in the future. If you are interested, please reach out to hiring@learndelta.ai with your resume and linkedin profile. Full Job Req: https://docs.google.com/document/d/1UEIhC5y-iEnlSPab4s88OoA7qlishCyq4rjOIljj3ys/edit?tab=t.0