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Available for full-time projectsSoftware developer for product teams: Next.js / TypeScript / React Native, remote or Krakow.
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Plenti

Full-stack & Mobile Developer at Plenti. I co-built the electronics rental platform end-to-end: from the Next.js website and React Native app to analytics, releases, and product processes.

Plenti

Technologies

Next.js
React Native
TypeScript
Node.js
PostgreSQL
PostHog

Key elements

  • Website and mobile app development
  • Product analytics and A/B experiments
  • Release workflow and CI/CD improvements
  • Architecture and SEO support

Project context

At Plenti, my role went far beyond traditional frontend work. I was involved across the Next.js website, the React Native mobile app, and the broader systems that shaped product velocity and delivery quality.

Because the platform was evolving continuously, the job was not just about shipping features. It also meant improving the foundations behind the product: analytics, release processes, code quality, and technical decision-making.

Scope of work

On the web side, I developed and maintained the Next.js website while also supporting SEO and performance work. In parallel, I contributed to the mobile application and to internal improvements that made delivery more reliable across the whole product.

A meaningful part of my work focused on product analytics and experimentation. That included the PostHog migration, stronger user behavior tracking, and creating a better setup for future optimization work.

Business value

This project reflects how I approach product development: not as isolated feature delivery, but as coordinated work across frontend, mobile, analytics, and process. The biggest value came from connecting those areas into one practical operating model.

Other projects

See more work from my portfolio.

Mio Home

Mio Home

Full website implementation for Mio Home: homepage, 3-part offer, about page, portfolio with 16 projects, contact page, blog, plus PostHog analytics and Resend email integration.

Bike Computer

Bike Computer

A custom training platform for cyclists that combines activity analytics, workout planning, Strava and Zwift integrations, and AI-powered support.

CLI Image Optimizer

CLI Image Optimizer

A local Python CLI tool for batch image optimization with WebP, JPEG, and PNG conversion, configurable compression, and automatic metadata stripping.

Ready to improve your project?

Sounds good?

Ailo client logoCledar client logoMiohome client logoPlenti client logoWebiso client logo+4
I've been working on projects for clients for 6 years