Available · From Israel's startup scene · Relocating Sep 2026

Jeremy
Belolo

EngineeringLead·AI·Full-Stack·Mobile
Paris / Tel Aviv → Montreal / US
View CVGet in Touch
engineer.ts
TS
1const engineer = {
2 name: "Jeremy Belolo",
3 experience: "16+ years",
4 role: "Engineering Lead",
5 superpower: "Zero to production, alone if needed",
6 languages: ["TypeScript", "React Native", "Node.js", "AI/LLM"],
7 currentMission: "relocating to build what's next",
8};
TypeScript · Strict Mode ✓0 errors · 0 warnings
TypeScriptReact NativeNode.jsNext.jsAI/LLMAWSPostgreSQL
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Years Experience
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CTO Roles
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Products Shipped
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Devs Mentored

About

Three-time CTO
who still
ships code.

Jeremy Belolo
Lead teams.
Ship solo.
Full story

Jeremy has 16+ years building products in Israel's startup ecosystem — telecom, social gaming, enterprise SaaS, and education. He's currently Technical Lead at BrainPOP — an education platform used by millions of students across the US — leading a squad of engineers and driving AI/LLM integration at scale.

He also solo-built Buddzy, a live social gaming app on iOS & Android — a full 5-project TypeScript monorepo with AI content pipelines, serverless media generation, and real-time features. Shipped in his spare time while holding a full-time role.

Three-time CTO. Fluent in French, English, and Hebrew, with notions of Japanese. After 16 years in Israel's tech scene, relocating to North America to build what's next.

AI / LLMFull-StackReact NativeTypeScriptSystems ThinkingCloud Infrastructure

What I work with

Technical Arsenal

Languages & Frameworks10

TypeScriptJavaScriptNode.jsReact NativeExpoReactNext.jsVue.jsPHPLaravel

Backend & APIs10

FastifytRPCExpressRESTMicroservicesPrismaBullMQJWTZodGraphQL

AI & Automation7

LLM IntegrationGoogle GeminiOpenAI APIReplicateSAM3Prompt Engineeringn8n

Cloud & Infrastructure9

AWS LambdaS3CloudFrontAPI GatewayServerlessGCPDockerCI/CDRender

Data6

PostgreSQLMySQLMongoDBRedisPrismaSQL Optimization

Mobile8

React NativeExpo EASiOSAndroidApp StoreGoogle PlayStoreKit 2FCM

Leadership6

Technical LeadershipSystem DesignArchitecture ReviewsMentoringAgileScrum (certified)

Professional Timeline

Career Journey— 16+ years

From first commit to architecture authority.

May 2023 – PresentTel Aviv, Israel · Hybrid

BrainPOP

Technical Lead

EdTech platform serving 5M+ students. Architecture authority across all 4 squads; 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 across all 4 squads — owned system design, scalability reviews, and technical direction for 20+ microservices
  • Mentored 6 engineers — improved delivery velocity by structuring code reviews, pair programming, and reducing production regressions
  • Established engineering standards: code review practices, testing requirements, ADRs, runbooks — reduced MTTR on critical incidents by 40%
LaravelVue.jsDockerMySQLMongoDBMicroservicesAI/LLM
Jan 2025 – PresentRemote

Buddzy

Personal

Creator & Solo Architect

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 0.81/Expo 54 mobile app (iOS + Android), AI pipelines, serverless media generation, Next.js landing page
  • Event-driven architecture with 22+ event types; tRPC for end-to-end type safety; PostgreSQL + Redis backing store
  • 4 AI content pipelines — Gemini, SAM3, 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
Google PlayApp StoreWebsite
TypeScriptReact NativeFastifytRPCPostgreSQLRedisAWSGCPGeminiOpenAIRemotion
Nov 2021 – Apr 2023Jerusalem, Israel

Or-Formation Services

Tech Expert & CTO

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.

Feb 2018 – Nov 2021Jerusalem, Israel

Annatel

Senior Software Engineer

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).

Feb 2016 – Feb 2018Jerusalem, Israel

Audeside LTD

Senior Software Engineer

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

Earlier Career · 2010–2016

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

Projects & Open Source

What I Build

Production systems — not demos. Every repo below runs in the Buddzy stack or powers real-world infra.

Flagship ProjectLive on iOS & Android

Buddzy

Solo-architected · Jan 2025 → Present · Nights & weekends

App StoreGoogle Playbuddzy.app

5-project TypeScript monorepo — event-driven architecture with 22+ event types, end-to-end type-safety via tRPC, AI content pipelines, server-side video rendering, full game economy with i18n (EN/FR/HE + RTL). Live on both app stores.

5-Project Architecture

Backend

Fastify · tRPC · PostgreSQL · Redis

Mobile App

React Native · Expo · iOS · Android

AI Pipelines

Gemini · SAM3 · OpenAI · Replicate

Media Generation

AWS Lambda · Sharp · Remotion

Landing & Deep Links

Next.js · Render

TypeScriptReact NativeExpoFastifytRPCPostgreSQLRedisAWS LambdaGCPGeminiOpenAIReplicateRemotionNext.jsRender
Company Impact

What I Built at Companies

BrainPOP

Technical Lead

AI/LLM integration at scale for millions of students

Championed AI adoption across BrainPOP — drove the team to integrate AI tools into dev workflows, code reviews, and product features. Architecture authority across all squads on a system serving millions of students.

AI Adoption LeaderProduct AI IntegrationArchitecture AuthoritySquad Leadership

Or-Formation

CTO — Built from Zero

Full CRM platform — scheduling, payments, invoicing

Joined as CTO and built the entire technical platform from scratch: scheduling engine, payment processing, automated invoicing, and a client portal. Hired and trained the dev team.

Zero-to-One BuildPayment IntegrationAutomated InvoicingTeam Building

Annatel

Senior Engineer — National MVNO

Nationwide telecom service built from the ground up

Core engineer on a greenfield national mobile operator. Built subscriber management and SIM provisioning systems, led the monolith-to-microservices migration, and redesigned the billing application.

SIM ProvisioningBilling RedesignMicroservices MigrationCarrier Integration

Past Personal Projects

Owaks

past

Email open tracking for Gmail

Chrome extension + backend that added read-receipt tracking to emails sent through Gmail, notifying the sender when an email was opened.

SeniorAnim

evolved

Activity platform for seniors

Built the first version: website, Android tablet app, and CMS for an activities platform targeting senior care facilities.

Greet & Green

past

Custom digital invitation cards

A service for creating and sending customizable digital invitation cards with music and animations — an eco-friendly alternative to paper invitations.

Open Source
$ ls ~/repos/

Lambda layers extracted from Buddzy's production AI infrastructure, plus contributions to gmail.js, Laravel Scout, Elixir libraries, and React Native packages. github.com/JerryBels ↗

lambda-layer-openai

AWS Lambda layer for OpenAI SDK — production dependency in Buddzy's AI pipelines

github.com/JerryBels

lambda-layer-google-genai

AWS Lambda layer for @google/genai — powers Gemini integration in Buddzy

github.com/JerryBels

lambda-layer-replicate

AWS Lambda layer for Replicate SDK — image generation infrastructure

github.com/JerryBels

lambda-layer-sharp

AWS Lambda layer for Sharp — server-side image processing pipeline

github.com/JerryBels

Let's build
something

French-born, 16 years in Israel's startup ecosystem — now relocating to Montreal or US tech hubs. Open to Senior Tech Lead, Staff Engineer, and Engineering Director roles. Available immediately.

Available for opportunities
View / Download CV
Email[email protected]
Phone+33 7 59 73 94 98
LinkedInlinkedin.com/in/jerrybels
GitHubgithub.com/JerryBels
Stack Overflow~5k reputation
© 2026 Jeremy Belolo. All rights reserved.Built with Next.js & TypeScript