Jaroslaw Miazga
@jaroslawmiazga
Frontend Tech Lead at Boehringer Ingelheim who delivered a data-access platform that makes business data available 10× faster.
PolandWhat I'm looking for
At Boehringer Ingelheim, I designed and delivered the MVP of an internal data-access platform, helping users retrieve business data 10× faster than with the previous process. I lead frontend development, own the architecture, and set engineering standards adopted across teams.
I migrated the platform from React 16 to React 19 and Webpack to Vite, and built its CI/CD pipelines and Docker-based environments. I also mentor developers and coordinate delivery with product and data stakeholders.
At UptimeLabs, I designed and built a real-time incident-simulation platform UI from scratch. I implemented MQTT communication over WebSockets and set up unit and end-to-end testing; improvements from user research and testing helped the company win its first enterprise client.
Across roles at Plume Design, Inc., UNUM, and MuscleFood, I worked on SaaS, content-creation, and e-commerce products. My work included interactive D3.js visualisations, a web version of a mobile app, and a Warehouse Management System that reduced order-packing time. I’m available for long-term remote B2B contracts with EU/US overlap.
Experience
Work history, roles, and key accomplishments
Leading frontend development of an internal analytics and data platform, gathering requirements and delivering an MVP that improved data access speed. Defining engineering standards, mentoring developers, and migrating legacy code to modern React and Vite.
Owned frontend architecture for a smart-home Wi-Fi SaaS provider, leading refactoring and introducing TypeScript, testing, and i18n. Built interactive data visualizations and mentored engineers.
Lead Frontend Engineer
UptimeLabs
Mar 2022 - Dec 2022 (9 months)
Designed and built a real-time incident-simulation platform UI from scratch, implementing MQTT over WebSockets and setting up testing suites. Conducted UX research that helped win the first enterprise client.
Built and maintained the main web product and led the rewrite of internal tools for a content-creation platform. Delivered a web version of a mobile app and drove sprint-level delivery planning.
Built real-time integrations with external APIs on NestJS and TypeScript, covered with unit and integration tests. Contributed Architecture Decision Records.
Full-Stack Engineer
Directly
Nov 2016 - Sep 2018 (1 year 10 months)
Developed a customer-support platform for enterprise clients, building a real-time messenger and resolving performance and security issues. Worked in a Scrum team using ES6, Node.js, React/Redux, and Java.
Senior Frontend Engineer
SMT Software
May 2016 - Oct 2016 (5 months)
Designed and built an SPA blog module and a reusable CMS component library, introducing BEM and BDD. Achieved 90% unit-test coverage and added visual regression testing.
Software Developer
Linkeo
Jan 2010 - Jan 2015 (5 years)
Built web and mobile applications for multiple clients, including a news portal, password manager, car-rental system, and Android apps.
Freelance Web & Mobile Developer
Self Employed
Jan 2007 - Jan 2015 (8 years)
Delivered websites on a self-built CMS and co-developed a hotel-management system. Published Android apps including Bitwa Gorlicka 1915.
Education
Degrees, certifications, and relevant coursework
Jaroslaw hasn't added their education
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Tech stack
Software and tools used professionally
Availability
Location
PolandAuthorized to work in
Salary expectations
Social media
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