Szymon Chmal

Software Engineer

Toruń, Kujawsko-pomorskie, Poland3 yrs 11 mos experience

Key Highlights

  • Expert in cross-platform development with React Native.
  • Delivered over 50 talks at major tech conferences.
  • Microsoft MVP in Web Development.
Stackforce AI infers this person is a Frontend and Fullstack Developer specializing in SaaS and Open Source technologies.

Contact

Skills

Core Skills

React NativeReactTeam ManagementProject ManagementJavascript.netAngularSpring Framework

Other Skills

Open SourceResearch and DevelopmentiOS ProgrammingClient CommunicationChange ManagementApplication ArchitectureNode.jsLLMFirebaseNext.jsGoogle CloudTypeScriptAmazon Web Services (AWS)NestJSTeam Leadership

About

I'm a frontend engineer turned team lead, driven by curiosity, technical depth, and a strong belief that great products come from great collaboration. My current focus is on cross-platform development with React Native, where I help teams deliver high-quality, scalable solutions - and make sure we ship real value, not just features. While I’ve worked with Angular, Vue, and other frameworks, React quickly became my go-to - both for its flexibility and the ecosystem around it. That led me deeper into React Native, where I get to work at the intersection of mobile and web. I also enjoy diving into the backend when needed, having built services in both Node.js and Java. My curiosity doesn’t stop at the surface - I love peeking behind the curtain to understand how tools work under the hood, from bundlers like Metro to emerging protocols like React Server Components. That same curiosity fuels my contributions to open source, including the Astro project (for which I was honored with an Astro Community Award). As a seasoned speaker, I’ve delivered over 50 talks - from large-scale conferences like WeAreDevelopers World Congress to small, local meetups in Poland and abroad. Whether on stage or in the hallway, I enjoy sharing practical insights, hard-won lessons, and a few good war stories from the dev trenches. I’m also a Microsoft MVP in Web Development and the founder of GDG Toruń - the only JavaScript-focused meetup in the region. It’s not just a space for devs to share knowledge - we regularly engage with the local university to help shape the next generation of engineers entering the field. Above all, I’m passionate about building things that last - great teams, great tools, and great experiences for users.

Experience

3 yrs 11 mos
Total Experience
2 yrs 1 mo
Average Tenure
1 yr 10 mos
Current Experience

Callstack

4 roles

Expert Software Engineer

Promoted

Sep 2025Present · 7 mos

React NativeReactOpen SourceResearch and DevelopmentiOS Programming

Tech Lead

Mar 2025Oct 2025 · 7 mos

Team ManagementClient CommunicationChange ManagementProject ManagementApplication Architecture

Dev Lead

Sep 2024Mar 2025 · 6 mos

React NativeReactNode.js

Senior Software Engineer

Aug 2024Sep 2024 · 1 mo

ReactReact NativeNode.jsLLM

Gdg toruń

Leader

Jun 2024Present · 1 yr 10 mos · Toruń, Woj. Kujawsko-Pomorskie, Polska

Bright inventions

Senior Frontend Developer

Oct 2022Jul 2024 · 1 yr 9 mos · Gdańsk, Woj. Pomorskie, Polska · Remote

ReactTypeScriptJavaScriptAmazon Web Services (AWS)NestJS

Airnauts.com

2 roles

React Architect

Feb 2022Sep 2022 · 7 mos

ReactTeam LeadershipNext.jsTypeScriptProject Management

Full Stack Developer

Jan 2020Feb 2022 · 2 yrs 1 mo

  • 𝘚𝘰𝘧𝘵𝘸𝘢𝘳𝘦 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵
  • Single page applications using a wide collection of libraries/frameworks: Angular, React, Vue.
  • Monolithic/distributed backend services powered by .NET Core.
  • Chrome extensions.
  • 𝘈𝘥𝘥𝘪𝘵𝘪𝘰𝘯𝘢𝘭 𝘳𝘦𝘴𝘱𝘰𝘯𝘴𝘪𝘣𝘪𝘭𝘪𝘵𝘪𝘦𝘴
  • Conducting job interviews.
  • Being a mentor for junior frontend developers.
React.NETAngular

Womanup

Tech Lead

Apr 2021Present · 5 yrs · Warszawa, Woj. Mazowieckie, Polska · Remote

  • 𝘚𝘰𝘧𝘵𝘸𝘢𝘳𝘦 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵
  • Mobile application in React Native.
  • Supporting applications in Preact.
  • Cloud functions in Node.js
  • 𝘈𝘥𝘥𝘪𝘵𝘪𝘰𝘯𝘢𝘭 𝘳𝘦𝘴𝘱𝘰𝘯𝘴𝘪𝘣𝘪𝘭𝘪𝘵𝘪𝘦𝘴
  • Being a team leader.
  • Project management.
FirebaseNext.jsGoogle CloudTeam ManagementProject ManagementReact Native

E-kiosk s.a.

Frontend Engineer

Aug 2020Mar 2021 · 7 mos · Warszawa, Woj. Mazowieckie, Polska

  • 𝘚𝘰𝘧𝘵𝘸𝘢𝘳𝘦 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵
  • Developing new features, fixing bugs in React Native application.
JavaScriptReact Native

Sellions.com

Full Stack Developer

Jun 2018Jan 2020 · 1 yr 7 mos · Warszawa, woj. mazowieckie, Polska

  • 𝘚𝘰𝘧𝘵𝘸𝘢𝘳𝘦 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵
  • Hybrid mobile application (Ionic Framework).
  • Monolithic backend service (Java, Spring Framework).
  • Batch processing of high volume files using Spring Batch and selfmade tools.
AngularSpring FrameworkIonic Framework

Education

Warsaw University of Technology

Master of Engineering — Applied Computer Science

Jan 2020Jan 2022

Warsaw University of Technology

Bachelor of Engineering — Applied Computer Science

Jan 2016Jan 2020

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