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Developer

Bartosz Kowal
Fullstack Web Developer

Specializing in advanced web applications and scalable SaaS platforms.
I combine modern front-end with high-performance back-end solutions.

Experience: E-commerce SaaS Platforms

React • Next.js • TypeScript • NestJS • Strapi • Node.js • Chakra UI • Tailwind CSS

Development and maintenance of SaaS e-commerce platforms (multi-tenant) with a separate database for each merchant.

Scope:

  • Implementation of frontend applications (storefronts, business websites, CMS panels) and backend systems (central backend, store/business website APIs, microservices).
  • Integration of payments (Stripe) and shipping (InPost).
  • Implementation of dropshipping automation by fetching and parsing XML feeds.
  • Developing and optimizing SEO features (dynamic metadata, structured data, JSON-LD) and improving performance using SSR, ISR, and caching strategies.
  • Authentication and authorization systems using NextAuth and Strapi role-based access control.
  • Enabling internationalization (i18n) support across the platform.

Experience: Automotive Software Testing

QA Automation • Automated Tests • Test Cases • Bug Tracking

Ensuring system reliability in the automotive sector through rigorous testing procedures.

Scope:

  • Analyzing and refining software and system requirements.
  • Defining test scenarios.
  • Developing test cases.
  • Executing tests and reporting bugs.

Why is it worth working with me?

Quality Engineering

I focus on building architectures that are clean, scalable, and easy to maintain.

AI-driven approach

I actively leverage advanced AI tools to enhance development efficiency.

Partnership & reliability

My workflows are optimized to deliver software on time and according to schedule.

FAQ

Can you help define project requirements and shape the application concept?

Yes, I can help clarify your idea, define the scope, and suggest the best technical approach.

What technologies do you prefer?

I specialize in the JavaScript/TypeScript (React, Next.js) ecosystem and Node.js (NestJS, Strapi).

What are your project pricing ranges?

Each project is priced individually after reviewing the requirements and scope of work.

What does your collaboration process look like?

We start with a needs analysis, followed by design, implementation, and testing, while maintaining continuous communication.

Feel free to get in touch

If you’re looking for an experienced developer for your project, feel free to contact me.