Jacob Oressie

Product-minded engineer with 10 years of hands-on experience building and operating software across web, iOS, and Android. Deepest in Next.js, React, TypeScript, and React Native, with end-to-end ownership across architecture, backend services, data systems, cloud infrastructure, native mobile, security, third-party integrations, and production AI.

Lead Product Engineer (Founding Engineer) at Drodat, Inc. (2022-01 – Present)

Led architecture and hands-on engineering across a multi-tenant property operations platform, React Native field application, and internal support and administration platform.

• Built and scaled a multi-tenant SaaS platform with Next.js App Router, React, and TypeScript, spanning CRM, properties, projects, workflows, permissions, contracts, scheduling, communications, reporting, billing, document storage, and mobile field operations.
• Reduced the largest customer dashboard load from approximately 14 seconds to 150 milliseconds with trigger-maintained aggregates, denormalized read models, sharded Firestore access, constant-size fast paths, cached authorization checks, and slimmer API responses.
• Engineered a crash-resilient React Native media pipeline with persistent queues, resumable Google Cloud Storage uploads, concurrency control, exponential retry, background execution, Live Activities, and real-time Firestore progress for large field photo batches.
• Developed native Swift, ARKit, LiDAR, and RoomPlan capture infrastructure for camera poses, depth, point clouds, meshes, planes, and room geometry, feeding a Cloud Run reconstruction pipeline that produces floor plans, SVG/PDF exports, estimating artifacts, and interactive 3D walkthroughs, with 54 documented pipeline tests and 0.3-1.7% synthetic area error.
• Built production AI systems for contextual assistance, document parsing, natural-language reporting, policy and form autofill, embeddings, RAG support automation, and confidence-gated human handoff using OpenAI, Gemini, Anthropic, and Voyage.
• Designed Firestore-to-BigQuery analytics across approximately 17 exported collections and 19 typed SQL views, powering parameterized queries, custom report builders, operational analytics, branded PDF/CSV exports, and AI-assisted reporting.

Full-Stack Developer (Owner) at Zane Firm (2019-01 – 2022-12)

• Designed and shipped custom web and mobile products using React, Next.js, React Native, TypeScript, JavaScript, and Node.js, owning projects from discovery and architecture through deployment and production support.
• Built authentication, databases, file storage, admin dashboards, customer portals, automation workflows, and cross-platform iOS and Android applications.
• Integrated payments, communications, identity, CRM, and cloud services through REST APIs and webhooks, including Twilio SMS and voice workflows.

Web Developer (Owner) at Team FomCo (2016-01 – 2019-12)

• Founded and operated a web development business serving restaurants and other local businesses, owning client discovery, responsive website development, integrations, hosting, domains, deployment, maintenance, and long-term support.