Bartosz Wołak

Senior Frontend Engineer · Solution Architect · Team Lead

10+ years turning complex requirements into scalable, maintainable products

I'm a software engineer and architect based in Poland, specializing in high-quality frontend systems and full-stack product development. Over the past decade I've worked across the entire delivery cycle — from early architecture decisions and system design, through hands-on implementation, to team leadership and engineering process improvement.

I run my own software ventures (sp. z o.o. + JDG) alongside B2B consulting, which means I think about both the technical and business side of every solution.

const bartosz = {
  role:        ["Senior Frontend Engineer", "Solution Architect", "Team Lead"],
  location:    "Poland 🇵🇱",
  experience:  "10+ years",
  focus:       ["TypeScript", "React", "Next.js", "System Design", "AI Products"],
  currentlyBuilding: ["PromptBase", "Microfrontend Portfolio Platform"],
  openTo:      ["B2B consulting", "Contract work", "Technical advisory"],
};

Languages

Frontend

Backend & APIs

Data & Infra

Architecture & Tooling

A production-grade reference architecture for large-scale frontend systems

Built with Vite Module Federation to demonstrate cross-framework composition (React 18 + Vue 3) within a pnpm + Turborepo monorepo. Includes a Fastify BFF layer, full CI/CD pipeline, and a Loki / Promtail / Grafana observability stack for real-time log aggregation and dashboards.

Vite Module Federation React 18 Vue 3 Fastify Turborepo Grafana Docker

Prompt management and building platform for AI-powered workflows

Full-stack SaaS product for managing, versioning, and composing LLM prompts across teams. Self-hosted on a personal VPS with Docker. Built API-first with Next.js 14 App Router and Supabase as the data layer.

Next.js 14 Supabase Docker TypeScript Tailwind CSS VPS

Personalized learning powered by LLMs — from MVP to SaaS product strategy

An AI-powered platform generating adaptive learning paths and acting as an interactive tutor. Evolved from an internal MVP to a full product vision targeting the CEE/DACH market, with a Shopify-style infrastructure model for course creators.

React Node.js LLM Integration AI Content Generation Product Strategy

Geospatial threat intelligence with clustering and country risk scoring

Designed and built a real-time OSINT sub-module featuring event clustering with DBSCAN, a Country Intelligence Index, a deck.gl interactive map, and a FastAPI + Redis backend.

FastAPI Redis DBSCAN deck.gl Python React

Architecture — I design for change. The measure of a good architecture is how cheap the next feature is to add, not how clever the current one looks.

Code quality — Type safety from DB schema to UI props. Every boundary is a contract. Every contract is enforced at compile time.

Teams — A senior engineer's leverage is multiplied through their team. Mentoring, clear standards, and fast code review cycles compound over time.

Product thinking — I've run my own software businesses. I understand that technical decisions are business decisions, and I communicate them that way.

I'm available for:

Based in Poland · Remote-first · Available worldwide