Senior TypeScript Engineer — (Frontend/Full-Stack)

I build production apps from zero to shipped: onboarding, auth, KYC, contracts, payments, real-time systems, and scalable admin tooling.

  • * Built a tokenized investment platform from the ground up used by 1,100 users with ~300 DAU
  • * Shipped 8 deals and supported 1,400 investments (transactions + contracts) in 2 months
  • * Built a social automotive app from the ground up to 1,400 users with ~100 daily active users

Highlights

Built the platform's multi-crypto + fiat payment infrastructure (Ethereum, Bitcoin, Starknet), laying the foundation for monetization.

Refactored the deal creation workflow, unlocking new business models and massively simplifying operations.

Delivered communities + whitelist management, significantly reducing team operational workload.

Automated KYC and payment follow-ups, directly improving engagement and user experience.

Case Studies

Tokenized Investment Platform — Kamea Labs

Frontend Engineer / Full-Stack (TypeScript) owned major product features end-to-end

Early-stage startup, built from scratch

The Challenge

Build a complete investor flow: onboarding → compliance (KYC) → contract signing → payments → investment lifecycle management — with an internal admin system to operate deals and contracts.

What I Built

  • * Two production web apps: investor portal + admin dashboard (SvelteKit/Svelte 5)
  • * NestJS backend API (Postgres, JWT auth, RBAC) powering investments, payments, and contract management
  • * Compliance + trust layer: KYC/AML (Sumsub), digital signing (YouSign), monitoring (Sentry), session replay (OpenReplay), i18n (EN/FR)
  • * Supporting services: document generation (DOCX → PDF), secure upload flows, CI/testing infrastructure

Impact

1,100 users with ~300 DAU8 deals shipped, 1,400 investments processed in 2 months

What Leadership Highlighted

  • Built the platform's multi-crypto + fiat payment infrastructure (Ethereum, Bitcoin, Starknet), laying the foundation for monetization
  • Refactored the deal creation workflow, unlocking new business models and massively simplifying operations
  • Delivered communities + whitelist management, significantly reducing team operational workload
  • Automated KYC and payment follow-ups, directly improving engagement and user experience

Tech Stack

TypeScriptSvelteKit / Svelte 5Node.js / NestJSPostgreSQLAWSCloudflareSentry / OpenReplayPlaywright / Vitest / Jest

Belshore Drive — Social Automotive App (Mobile + Web)

Frontend Engineer (Web & Mobile) owned core social features

Startup, built from scratch

The Challenge

Ship a social/community app with strong UX: onboarding, profiles, discovery, vehicle management, and real-time messaging — plus a marketing site.

What I Built

  • * Cross-platform React Native (Expo) app covering onboarding, profiles, discovery feed, vehicle management
  • * Real-time chat from scratch: typing indicators, reactions, attachments, optimistic updates, pagination, and sync hooks on Supabase Realtime
  • * Auth + onboarding: Apple/Google sign-in, email/phone OTP, multi-step forms with validation
  • * Offline-first data layer using TanStack Query persistence + performance optimizations for lists
  • * Marketing website in SvelteKit (Svelte 5) with i18n, SEO, light/dark mode, contact form, Netlify deploy

Impact

1,400 users with ~100 daily active users

Tech Stack

React NativeExpoTypeScriptSupabase (Auth / Realtime / Storage)TanStack QueryReact Hook FormNativeWind / TailwindSvelteKit / Svelte 5

How I Work

I optimize for shipping + stability: MVP fast, then harden with tests, monitoring, and clean architecture

I build systems, not just screens: data flow, validation, access control, observability

I communicate clearly, scope aggressively, and take ownership of outcomes

"I grew from needing frequent Lead validation to shipping largely autonomously, taking responsibility for architecture, security, and quality."

"I'm recognized for technical rigor, autonomy, clear communication, and pragmatic tradeoffs between quality and speed."

Tech Stack

Frontend

SvelteKit / Svelte 5ReactReact Native / ExpoTailwind / NativeWind

Backend

Node.jsNestJSREST APIsAuth / RBAC

Data

PostgreSQLTypeORMSupabase

Quality & DevOps

PlaywrightVitest / JestCI/CDSentryCloudflareAWS

Testimonials

"A very positive year — strong seriousness, constant investment, and significant progression. Adam demonstrated a senior level aligned with expectations."

Annual review Kamea Labs leadership

"He brings innovative solutions, helps others, and elevates team productivity while delivering consistently."

David V. Technical Lead, Kamea Labs

Get In Touch

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© 2026 Adam Hayek ·