Avi Charlop
Senior full-stack TypeScript engineer and team lead building greenfield products, platform tooling, and the infrastructure to run them.
Experience
Closer — Contract Full-Stack Engineer, Remote
May 2026 – Present- Architected a "one-click village" provisioning system that launches a complete co-living-community platform instance across DigitalOcean, Vercel, MongoDB, Mailgun, Firebase, and Stripe Connect from one typed config, cutting setup from a full day to about 20 minutes.
- Designed the workflow engine as an idempotent, resumable step DAG over durable state, with full teardown and end-to-end tests against live cloud providers.
WhoCards — Co-founder, Remote
Jan 2021 – Present- Co-created whocards.cc and built its entire stack as sole engineer: an Astro + Stripe storefront with automated end-to-end fulfillment across 2 third-party providers, shipping ~600 orders through direct and brand-ambassador channels.
- Shipped the WhoCards iOS app to the App Store (Expo, React Native, NativeWind) with 14 languages including RTL, offline play, and universal links; the Android build is in closed testing.
- Restructured the product as a pnpm + Turborepo monorepo where web and mobile share a headless play engine, tRPC API, and design tokens, released through an automated EAS build-and-submit pipeline with over-the-air updates.
Vionlabs — Team Lead, Remote
Feb 2025 – Feb 2026- Hired and led a 4-engineer team building a greenfield, multi-tenant media-catalog portal while keeping the legacy customer portal live for enterprise customers.
- Architected the new portal as a Turborepo monorepo (Next.js 15, tRPC, Fastify, Drizzle/Postgres) with catalog browsing, smart lists, filtering, tagging, and enterprise auth through WorkOS SSO and scoped API keys.
- Shipped new prospect-targeted features ahead of each of 4 trade shows and turned booth feedback into same-day product updates, driving the portal to feature-complete for its first 10 enterprise customers.
- Owned the GCP production platform in Terraform: Cloud Run, Cloud SQL, Pub/Sub, Eventarc, Secret Manager, VPC, and GitLab CI/CD.
Collect.AI — Senior Frontend Engineer, Remote
Aug 2023 – Sep 2024- Built a type-safe form generator on React Hook Form and the internal MUI component library, powering 25 unique forms on the core collections screen of a German receivables-management SaaS portal from a single config-driven API.
- Migrated the portal’s state management to Redux Toolkit and RTK Query, cutting 2,500+ net lines across 116 files of the React/TypeScript monorepo.
Freelance — Full-Stack Developer, Remote
Oct 2022 – Jun 2023- Built J3D.AI, a real-time AI workshop-summary app (Next.js, tRPC, Prisma, Supabase, GCP) with live audio capture, ffmpeg-based transcription, and editable AI-generated next steps.
- Led frontend development at TzConnect on the Tezos NFT marketplace behind CIRCA’s Marina Abramović “The Hero 25FPS” release — a 6,500-frame edition that drew 1,700+ mints — building the frame-purchase flow on the Taquito stack.
Net2Phone — Engineering Lead / Full-Stack Engineer, Remote
Jan 2017 – Dec 2022- Led the shared component library and the Angular 2 → 7 upgrade as lead front-end engineer and scrum master, cutting initial application load time by 50%.
- Built a WebRTC browser dialer (React, Redux, TypeScript, JsSIP) for the Unite UCaaS platform serving 200K+ business customers, supporting multiple call-server configurations and upstreaming in-band DTMF support to JsSIP.
- Refactored core Go messaging microservices and implemented unit testing across key services.
Takt Digital — Software Engineer, Miami
Jul 2016 – Jan 2017- Built a serverless streaming-media pipeline (AWS Lambda + Bitmovin transcoding) as the sole developer, carrying the product from MVP through a startup’s second Y Combinator round.
- Tech-led a parallel fintech analytics dashboard (Angular): hired the team and owned API and front-end delivery.