KornelDubieniecki

Experience in detail

1. 

   Technical Lead · Kornel.me · Self-employed

   Jul 2019 - Present · 7 yrs 4 mos

   My sole proprietorship, used for client work and B2B contracts with companies.

   • Built web, mobile and desktop apps, AI workflows and no-code / low-code automations for individual clients.
   • Contributed to various open-source projects, including Jest, React, Vercel, Expo and Tailwind, and became a member of the styled-components org and a maintainer of Gatsby's Polish community.
   • Published my own open-source packages, e.g. inclusive-organization-action, perfekt and branchlint-action, which were used, forked and contributed to by other developers.
2. 

   Ambassador · Cursor / SpaceXAI · Part-time

   Apr 2026 - Present · 7 mos

   SpaceX's AI company (formerly xAI, maker of Grok), which also acquired Cursor.

   • Organized events like hackathons and build nights, created educational content and helped to grow and maintain the Cursor and SpaceXAI communities.
   • Tested early releases, reported bugs and gave product feedback directly to the internal teams.
3. 

   Staff Software Engineer · Paylocity · Full-time

   Sep 2024 - Jun 2026 · 1 yr 10 mos

   Nasdaq-listed provider of payroll and HR software for US businesses.

   • Migrated some of the largest remaining parts of a running legacy application while keeping them well covered with tests and stable for enterprise clients.
   • Helped other product teams to move their projects to a new Nx monorepo and migrate to a new React Aria-based design system as part of the Frontend Experience team.
4. 

   Senior Frontend Engineer · Chili Piper · Contract

   Aug 2024 - Nov 2025 · 1 yr 4 mos

   Lead routing and instant booking platform for B2B sales teams, used by LinkedIn, Shopify, Spotify and Twilio.

   • Built integrations with external services and refactored foundational parts of the platform, like unified navigation, user tables, the browser extension and the connection between products.
   • Drove AI adoption across the company, explained the no-code / low-code tools to Customer Success, Marketing and Sales teams, and presented advanced AI workflows to the engineering department.
5. 

   Technical Lead · Macromo · Part-time → Full-time

   Sep 2021 - Aug 2024 · 3 yrs

   Healthtech startup turning DNA, blood work and wearables data into personalized AI-driven health insights.

   • Joined as the founding engineer, grew the engineering team to ~7 people and helped land the first client, close the ~$900K pre-seed, win a startup competition in Singapore and get featured on the Nasdaq billboard.
   • Built the first few iterations of the mobile app largely solo and integrated Apple Health, wearables and the Macromo AI bioinformatics engine.
6. 

   Senior Software Engineer · Outreach · Full-time

   May 2021 - Aug 2023 · 2 yrs 4 mos

   Sales engagement platform used by revenue teams worldwide.

   • Developed the web app and the Outreach Everywhere browser extension, which brought the platform into Salesforce, Gmail, Outlook and a few other integrated services, and was used daily by tens of thousands of users.
   • Presented the latest tools and development best practices to the engineering department at internal meetings.
7. 

   Frontend Developer · STRV · Full-time

   Jul 2019 - May 2021 · 1 yr 11 mos

   Award-winning digital product agency building mobile and web products for 400+ clients.

   • Worked on Brightwheel, Rich Uncles and the CEO's website migration, contributed to internal code-quality tools and presented various libraries like Downshift, XState and perfekt, my own release manager used internally.
   • Led a team of ~5 frontend developers on Rich Uncles, a real estate crowdfunding platform, and owned the stakeholder communication, task breakdown and sprint planning together with the PM.
8. 

   Full Stack Developer · IBM · Full-time

   Jun 2018 - Jul 2019 · 1 yr 2 mos

   IBM Security's X-Force Red, a global team of ethical hackers testing enterprise systems.

   • Built full-stack features for IBM's X-Force Red Portal, where enterprise clients could schedule penetration tests.
   • Helped to migrate the frontend application from Sass to styled-components, unit tests from Mocha to Jest and end-to-end tests from Selenium to Cypress, and introduced TypeScript to the codebase.
   • Received IBM's Exceptional Achievement award and a monetary prize in 2018 for being one of the top external contributors to the open-source Carbon Design System project.