At ZivkoDev Studio, I develop web applications for client projects and independent SaaS products, handling technical design, implementation, testing, and deployment. I built Cekira, an invoicing and work-management product with reusable templates, PDF generation, multi-tenant workspaces, and Stripe subscriptions.
For Cekira, I integrated Anthropic and OpenRouter APIs to extract structured invoice data, with validation and an editable review step. I also connected Gmail for invoice delivery and Linear for task synchronization.
At Inviggo, I designed and built Gaiseo, a B2B SaaS platform analyzing website visibility in AI-generated search results, and owned its architecture, subscription flows, CI/CD, and release preparation. I also led development of enterprise data-grid and table components for Conga, including reusable React and Lit components documented in Storybook.
