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B2B software studio

finestcode.pl

Web engineering for product teams

We build and evolve production-grade web applications — React, Next.js, and TypeScript — under clear B2B contracts with senior ownership from day one.

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About finestcode.pl

finestcode.pl is an independent software studio focused on long-term B2B cooperation with product and engineering teams. You get a dedicated senior partner for frontend and full-stack delivery — architecture, implementation, and production care — without the overhead of hiring or managing another vendor layer. Years of shipping in regulated, multi-market, and monorepo environments are part of what you contract for: reliable delivery, clean interfaces, and systems that stay maintainable as your product grows.

Working languages

  • Polish — Native
  • English — C1 — client and team ready

Engagement model

  • B2B contract partnership

    Invoice-based cooperation with clear scope, ownership, and delivery cadence — suited to product teams that need senior capacity, not a CV.

What we deliver

  • Scalable React / Next.js / TypeScript applications for product roadmaps
  • UI systems, component libraries, and design-system aligned interfaces
  • API integrations, secure auth (JWT, OAuth), and reliable data layers
  • Monorepo and large-scale production frontend ownership
  • Performance, refactoring, and quality practices that reduce delivery risk
  • Full-stack support when the product needs NestJS, APIs, or containerised deploy

How we build

Primary stack

Languages

TypeScript
JavaScript

Frontend

React
Next.js
App Router
Pages Router

State & Data

Redux
Zustand
MobX
SWR
Axios
React Query
Fetch
GraphQL
WebSockets
REST

Auth

NextAuth
OAuth 2.0
Clerk
JWT

UI & Styling

HeroUI
Tailwind CSS
MUI
Bootstrap
Styled Components
Sass
Less

Build Tools

Vite
Webpack
Rollup

Cloud & Hosting

AWS
Vercel
Heroku

Backend

Node.js
Express.js
Fastify
NestJS

DevOps

Docker
Kubernetes
K3s
Rancher
Linux
Nginx
Apache

Databases

MongoDB
MySQL
SQL
ArangoDB
Prisma ORM

Testing & Docs

Playwright
Puppeteer
Cypress
Jest
React Testing Library
Storybook

Version Control

Git
Bitbucket

Package Managers

Yarn
npm

Design

Figma
Adobe XD

Also experienced with

PHP
Laravel
CakePHP
Zend Framework
Symfony
AngularJS

Selected collaborations

Client engagements that demonstrate how we work in B2B partnerships. Prior product and platform work is part of the senior capacity you get when you contract with finestcode.pl.

  • Senior frontend partnership

    DUOLIFE S.A.Remote
    Ongoing B2B

    2020 – Present

    • Long-term ownership of scalable TypeScript web applications — architecture, delivery, and code quality in production.
    • Complex React / Next.js interfaces with reusable components, SSR, and state management (Redux, Zustand) aligned to product needs.
    • Structured data layer with typed contracts, Axios, and SWR for efficient fetching and caching across features.
    • Secure REST integrations with JWT and OAuth 2.0; payment and third-party service flows where the business required them.
    • Design-system UI with Material UI and Tailwind, pixel-faithful builds from Figma / Adobe XD, documented in Storybook.
    • Multi-language, multi-region behaviour — country-driven pricing, currency, and billing rules via i18n.
    • Reliability through Jest and Cypress; Docker / Kubernetes (K3s) environments; monorepo maintenance with Lerna.

  • Full-stack product delivery

    Digitalprint.proCracow
    B2B / project

    2017 – 2020

    • Backend and API work in PHP / Laravel and Node.js (Express, NestJS) against MySQL in production.
    • Real-time features with Socket.io; frontend maintenance in AngularJS with a path toward modern stacks.
    • Containerised delivery with Docker, Kubernetes / K3s, and Jenkins pipelines supporting release cadence.

  • Platform engineering

    Unity Group S.A.
    Project

    2016 – 2017

    • Stabilised and evolved PHP / Zend / JavaScript / MySQL web services across client industries.
    • Agile delivery of features and production fixes for business-critical platforms.

  • Print platform & product editor

    Digitalprint.proCracow
    Long-term

    2012 – 2016

    • Built a print-shop management web app for configuring, personalising, and ordering print products online.
    • Browser-based product editor (AngularJS) with Socket.io sync to PHP / Node / MySQL backends and order workflows.

  • Data & web products

    Active8.pl S.C.Cracow
    Co-founded

    2012 – 2014

    • Custom crawl and aggregation pipeline for software/product data into a search-oriented MySQL store.
    • PHP / CakePHP services for extraction, normalisation, and scalable retrieval.

  • E-commerce engineering

    Morele.netCracow
    Employment

    2009 – 2011

    • Storefront and cart UX plus PHP / MySQL catalog, account, and order logic; external search and CMS integrations.

  • Full-stack web delivery

    Netstel SoftwareCracow
    Employment

    2008 – 2009

    • End-to-end PHP / MySQL applications — auth, data models, and accessible HTML/CSS interfaces for client requirements.

Let's talk cooperation

Planning a product initiative, need senior frontend capacity, or looking for a long-term B2B engineering partner? Reach out — we respond with a clear next step, not a recruiting pitch.

Cooperation
B2B contract — Open to new product partnerships and ongoing engineering collaboration.
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GitHub
https://github.com/rafal-the-dev (opens in new tab)