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Dominik Gronkiewicz

@dominikgronkiewicz

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Senior Web Developer at CEHDI, redesigning its website for accessibility and implementing Next.js SSR and APIs.

Poland

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What I'm looking for

I’m interested in mobile web development using JavaScript and in strengthening the connection between technical solutions and measurable business impact.

At Global Center for Health Diplomacy and Inclusion (CEHDI), I’m redesigning the website UI and adjusting it to meet WCAG / ADA compliance. I’m also integrating Sanity CMS and implementing SSR and APIs using Next.js.

At Flowrence Inc., I worked on separating client-facing and internal web applications, including migrating a React app to Next.js and Tailwind CSS. I also integrated Sanity CMS and worked on improving the customer journey with analytics and A/B testing UI solutions.

At Altimetrik Sp. z o.o. / Novartis A.G., I created a financial statistics app as a PWA/hybrid app and maintained a shared UI component library. I also created proof-of-concepts focused on high performance and low network latency.

Earlier, I created CMS applications, dashboards, and Progressive Web Apps at Brival Sp. z o.o., and worked on social applications and APIs at Gemmy Tech Inc. My work has also included React Native migration, front-end architecture, and technical documentation.

Experience

Work history, roles, and key accomplishments

Current

Web Developer / Technical Consultant

Current

Global Center for Health Diplomacy and Inclusion

Jan 2026 - Present (9 months)

Redesigning website UI and ensuring WCAG/ADA compliance. Integrating Sanity CMS, designing architecture and data structures, and implementing SSR/API with Next.js.

Next.js Sanity CMS GROQ WCAG ADA SEO AWS Technical Documentation RFC ADR

Web Developer

Flowrence Inc.

Aug 2025 - Jan 2026 (5 months)

Migrated React apps to Next.js and Tailwind CSS, integrated Sanity CMS, and implemented SEO standards. Improved customer journey with analytics and A/B testing.

React Next.js Tailwind Sanity CMS GROQ SEO Google Analytics Google Tag Manager A B Testing AWS

Senior Engineer (Front-end, PWA)

Altimetrik Sp. z o.o. / Novartis A.G.

Dec 2023 - Aug 2025 (1 year 8 months)

Developed a financial statistics PWA/hybrid app using React, TanStack Query, Capacitor, and Tailwind. Maintained a shared UI component library and created high-performance PoCs.

React Tanstack Query Capacitor Tailwind TurboRepo LESS Storybook Code Review Recruitment Unit Testing RFC ADR

Web Developer

Gemmy Tech Inc.

Aug 2023 - Dec 2023 (4 months)

Built a social media app using Solid.js, React, Remix, Tailwind, Nostr protocol, and Solana blockchain. Migrated to React Native with AT Protocol and configured Personal Data Server.

Solid.Js React Remix Tailwind Nostr Solana React Native AT Protocol TypeScript NodeJS Payload CMS

Senior Front-end Developer

Brival Sp. z o.o.

Jul 2019 - May 2023 (3 years 10 months)

Created CMS-style web applications and custom dashboards using React and Angular. Managed a team of developers, mentored juniors, and led incident response for client-facing apps.

React Angular REST PWA Payment Integration IFrame HTML CSS Bootstrap UI UX Team Management Mentorship RFC ADR

Front-end Developer

i2a Solutions Inc.

Apr 2017 - Feb 2020 (2 years 10 months)

Developed CMS web applications for NBA teams, museums, and zoos, plus a mobile web client for image recognition. Extended server-side logic with Node.js and Firebase.