Michał Maciejewski

I am a Senior Frontend Developer who translates complex business domains into scalable, type-safe user interfaces using React and Web Components

Based in Częstochowa, Silesia, I currently engineer frontends at ING Poland. Sitting at the intersection of component architecture and developer experience, I care deeply about resilient foundations—whether I am mentoring teams on clean code, or crafting solid wood furniture off-screen.

8年
YEARS BUILDING FOR THE WEB

Open to new roles

経

The Path

- JAN 2022 – PRESENT
  5 yrs 11 mos
  Senior Dev Engineer (Frontend) - ING Poland
  Częstochowa, Silesian Voivodeship, Poland
  - Architect and engineer scalable microfrontend solutions using Web Components (Lit.dev) for the SME (Small and Medium Enterprise) digital banking platform.
  - Own the technical implementation of the Customer Communications bounded context, engineering a multi-channel messaging architecture (inbox, persistent banners, and login intercepts) to deliver critical system alerts, business updates, and promotional content.
  - Design and implement robust integration layers for third-party services, seamlessly embedding external chat components into the core banking ecosystem without compromising security or performance.
  - Led a dedicated "Clean Code" working group, mentoring fellow frontend engineers and establishing rigorous standards for maintainability, testability, and software architecture across the department.
- DEC 2020 – JAN 2022
  5 yrs 11 mos
  Frontend Developer - ING Poland
  Częstochowa, Silesian Voivodeship, Poland
  - Developed and maintained robust frontend features for core banking applications.
  - Collaborated with cross-functional teams to ensure high performance, stability, and seamless user experiences across devices.
- MAR 2018 – NOV 2020
  2 yrs 9 mos
  Frontend Developer - Sodexo Benefits & Rewards Services
  Warsaw, Poland
  - Engineered and scaled enterprise B2B loyalty platforms for corporate clients in the financial sector, utilizing Angular (v5+) and modular CSS/SASS architectures.
  - Developed responsive, non-wage benefit catalogs for FMCG clients, managing the migration and modernization of legacy AngularJS interfaces.
  - Led the accessibility compliance initiative for public sector applications, refactoring UI components to strictly adhere to WCAG 2.1 standards.
  - Utilized hybrid design-engineering skills to collaborate on UI/UX layouts and visual materials, ensuring high fidelity between design concepts and technical implementation.
- MAR 2015 – FEB 2018
  3 yrs
  Front-End Developer - MobileFormats
  Warsaw Metropolitan Area, Poland
  - Built and deployed fully responsive web applications and interactive user interfaces using JavaScript, CSS, and Bootstrap within PHP-driven architectures.
  - Acted as the dedicated IT liaison to the Sales and Business departments, translating complex business constraints into actionable technical roadmaps.
  - Streamlined project planning by aligning technical capabilities with overarching business goals early in the software development lifecycle.

Michał Maciejewski

8年 YEARS BUILDING FOR THE WEB

The Path

Senior Dev Engineer (Frontend) - ING Poland

Frontend Developer - ING Poland

Frontend Developer - Sodexo Benefits & Rewards Services

Front-End Developer - MobileFormats

8年
YEARS BUILDING FOR THE WEB