Jeremy Belolo

I make engineering teams faster, better, and harder to break. 16+ years shipping production systems. Three-time CTO that still ships code. Currently Technical Lead at BrainPOP (5M+ students), and solo architect of Buddzy, live on both app stores.

• Led generative AI integration at BrainPOP — 5M+ students, 4 squads, large-scale monorepo
• Solo-built Buddzy from zero to production: 5-project monorepo, 3 AI providers, iOS & Android
• 3x CTO by 35 · 30+ engineers hired & mentored · architecture authority across every squad I've joined

Languages & Frameworks: TypeScript, JavaScript, Node.js, React Native, Expo, React, Next.js, Vue.js, PHP, Laravel, Elixir

Backend & APIs: Fastify, tRPC, Express, REST, Microservices, Prisma, BullMQ, JWT, Zod, GraphQL

AI & Automation: LLM Integration, Google Gemini, OpenAI API, Replicate, SAM3, Prompt Engineering, n8n

Cloud & Infrastructure: AWS Lambda, S3, CloudFront, API Gateway, Serverless, GCP, Docker, Git, Render

Data: PostgreSQL, MySQL, MongoDB, Redis, Prisma, SQL Optimization

Mobile: React Native, Expo EAS, iOS, Android, App Store, Google Play, StoreKit 2, FCM

Leadership: Technical Leadership, System Design, Architecture Reviews, Testing Standards, Mentoring, Agile, Scrum (certified)

Tel Aviv, Israel · Hybrid

EdTech platform serving 5M+ students. Architecture authority; leading a squad of 6 engineers.

• Led generative AI integration across the platform — drove adoption of AI tools into dev workflows, code reviews, and product features serving 5M+ students
• Architecture authority — owned system design, scalability reviews, and technical direction for large-scale monorepo
• Mentored 6 engineers — improved delivery velocity by structuring code reviews, pair programming, and reducing production regressions
• Established engineering standards: structured code review process, testing requirements, architectural decision records, runbooks — measurably improved code quality and review consistency across all squads

Stack: Laravel · Vue.js · Docker · MySQL · MongoDB · Microservices · AI/LLM

Remote

Production AI-powered social mobile app — live on both App Store and Google Play. Solo-architected and shipped from zero, nights and weekends.

• 5-project TypeScript monorepo: Fastify/tRPC backend, React Native/Expo mobile app (iOS + Android), AI pipelines, serverless media generation
• Event-driven architecture with 22+ event types; tRPC for end-to-end type safety; PostgreSQL + Redis backing store
• 3 AI content pipelines — Gemini, OpenAI, Replicate — powering dynamic game content and automated media generation
• Server-side video rendering via Remotion + AWS Lambda; multi-provider infra across 3 cloud providers (AWS, GCP, Render)
• Full game economy with 8+ game modes: Stars economy, Championships, Challenges, Lore Quizzes — i18n across 3 languages including RTL

Stack: TypeScript · React Native · Fastify · tRPC · PostgreSQL · Redis · AWS · GCP · Gemini · OpenAI · Remotion

Jerusalem, Israel

Joined as CTO of a 15-person company. Built full CRM from zero — scheduling, payments, automated invoicing, and client portal. Hired and trained 3 developers, owned all technical decisions and vendor relationships.

Jerusalem, Israel

Core engineer on a greenfield national MVNO serving 50K+ subscribers. Built and shipped a telecom service from zero. Designed subscriber management and SIM provisioning systems, led monolith-to-microservices migration, redesigned the billing application, and integrated with national telecom infrastructure (number portability, carrier APIs).

Jerusalem, Israel

Modernized legacy PHP CRM; introduced CI/CD; built two-way communication system and Angular customer portal.

Earlier Career

Clappyx — Tech Lead & Mobile Developer (Dec 2014 – Feb 2016)

SweetInn — Chief Technology Officer (May 2014 – Dec 2014)

Gagglon — CIO & Lead Developer (Apr 2013 – May 2014)

Upsider — Full Stack Developer (Apr 2010 – Apr 2013)