Jakub Zarzeczny

Fullstack Developer

I build full-stack web apps with TypeScript, React, Next.js, Angular, Node.js, and cloud platforms.

~/portfolio

$ whoami

Fullstack Developer

$ proof --quick

Experience
4+ years
Focus
TypeScript
Certifications
AWS + GCP + AI

$ help

cat experience.md

Experience

Commercial full-stack work at Ardentcode, with proof highlights for reliability, debugging, documentation, and ownership.

timeline

11.2023 - now

Regular Full Stack Developer

Ardentcode

Delivering full-stack product features across production-facing areas, including frontend, backend, AWS-backed services, and external system integrations.

  • TypeScript
  • Angular
  • Next.js
  • Express
  • AWS

04.2022 - 10.2023

Junior Full Stack Developer

Ardentcode

Built full-stack features and proof-of-concept applications, turning business requirements into usable flows across multiple domains.

  • TypeScript
  • Angular
  • React
  • Next.js
  • Prisma
  • MongoDB

01.2022 - 03.2022

Intern

Ardentcode

Built fundamentals through structured commercial training and early full-stack practice.

  • TypeScript
  • React
  • Next.js
  • Express
  • MongoDB

Reliability

Tests and safer releases

Wrote unit and end-to-end tests to reduce regression risk and support production release confidence.

Debugging

Production issue analysis

Investigated bugs with observability tools such as Kibana and Sentry, connecting user-facing symptoms to system behavior.

Architecture

Docs and decisions

Created technical documentation and decision records so implementation context stayed visible beyond the original task.

Ownership

Requirements to delivery

Clarified stakeholder requirements, built working flows, and iterated with team feedback until features fit the product.

inspect stack

Stack

A compact split between commercial tools used in production work and non-commercial tools explored through personal projects.

Frontend

commercial

  • Angular
  • React
  • Next.js
  • TypeScript

non-commercial

  • SvelteKit
  • Qwik
  • React Native

Backend

commercial

  • Node.js
  • Nest.js
  • Express
  • Prisma

non-commercial

  • Go
  • Python
  • Supabase

Cloud and infrastructure

commercial

  • AWS
  • Docker

non-commercial

  • GCP
  • GitHub Actions
  • Vercel

Testing and observability

commercial

  • Unit tests
  • E2E tests
  • Kibana
  • Sentry

non-commercial

  • Project instrumentation
  • Release checks
list certs

Certifications

Cloud and AI credentials that support the technical direction behind the project and infrastructure work.

Amazon Web Services

AWS Certified Solutions Architect - Associate

Cloud architecture, resilient systems, AWS services

Google Cloud

Google Cloud Professional Cloud Architect

Cloud solution design, infrastructure, reliability

AI_devs

AI_devs 4 Builders

Practical AI products, LLM workflows, builder tooling