John Tambunting

About

Founder-level CTO and product engineer with 8+ years building AI-enabled marketplaces and production search/relevance and data platforms from zero to scale. Leads executive product architecture and hands-on engineering across TypeScript, Python, React, Kubernetes, and GCP, with deep experience in ranking/matching systems, experimentation, and applied ML/LLM systems. Currently Co-Founder at Faith.app building a mobile-first Christian community platform.

Experience

• Chief Technology Officer · Pangea.app2017

  • Lead product architecture, data strategy, and engineering execution for an AI-enabled talent marketplace serving high-growth startups, agencies, and consumer brands hiring elite fractional marketers, designers, and digital operators. • Architected a multi-service platform across TypeScript, Node.js, Python, PostgreSQL, Redis, RabbitMQ, Elasticsearch, and BigQuery supporting search, messaging, interview workflows, job distribution, analytics, and employer-talent matching at scale. • Designed ranking and matching systems that combine profile enrichment, semantic retrieval, embeddings, search relevance, behavioral signals, and marketplace heuristics to improve candidate quality, response rates, and marketplace liquidity. • Built and operated a production Kubernetes + GCP stack with autoscaling, CI/CD, observability, secret management, backups, and incident-ready infrastructure; enabled fast release cycles while maintaining a lean, high-reliability cloud footprint. • Owned technical hiring, API strategy, data modeling, experimentation, vendor evaluation, and full-stack delivery across marketplace, growth, billing, SEO automation, and LLM-assisted workflow tooling.

• Co-Founder · Faith.app01-01-2025

  • Building a mobile-first Christian community platform centered on local event discovery, prayer requests, church exploration, and faith-based social connection. • Architected the MVP using React Native, Expo, Firebase, geospatial discovery, push notifications, messaging primitives, and an analytics-ready data model optimized for rapid iteration. • Lead product strategy, UX systems, full-stack implementation, and early growth experimentation from concept through launch readiness.

Education

• Brown UniversityBachelor of Arts, Applied Mathematics

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