Anna Bierońska

I've built backend systems for Silvr's revenue-based financing application flow and LeafLink's high-volume B2B marketplace, delivering reliable Django features as products evolved quickly.

At Silvr, I built document collection and passwordless authentication flows, reduced Django test-suite startup time from minutes to under a minute, and owned production incident triage and fixes through Sentry. I also contributed production-driven improvements to django-migration-zero.

At LeafLink, I led a live Python 2-to-3 migration, improved database consistency and order state management, reduced query counts in a high-traffic Django application, and co-developed REST integrations in a microservices architecture. I became a long-standing technical reference for the team, onboarding developers and shaping decisions through discussion and code review.

I've also contributed extensively to Saleor, mentored Django Girls participants, and continue exploring AI-assisted development through Flutter apps, Claude Code, and spec-driven workflows.