ŽIGA PETEK

• co-designed and built a centralized licensing system in C# and . NET for company-wide reuse, creating a single backend service interface that can be integrated across the full software ecosystem. • Develop core retail POS functionality in C# against Microsoft SQL Server, strengthening the platform’s scalability, reliability, and maintainability while supporting ongoing feature delivery for two product teams. • Implement multi-country fiscalization integrations in ASP.NET Core, translating country-specific tax rules into compliant backend logic for retail deployments across multiple markets. • Contributed to architecture workshops and code reviews, using technical feedback to raise implementation quality and mentor junior developers on clean service design and database-backed backend patterns. • Contributed to system stability and long-term maintainability by extending and improving the automated testing environment across unit, business-case, and integration tests, increasing coverage of critical business logic and helping prevent regressions.

• Redesigned the core product architecture in Node.js and TypeScript, restructuring backend services to improve runtime performance and make the platform easier to evolve. • Introduced a 300-rule static analysis and linting standard across the codebase, using automated checks to enforce Clean Architecture, SOLID practices, and consistent code quality across 5 developers. • Automated deployment scheduling and release execution with Git pipelines and Docker, cutting active deployment preparation time by 40% and reducing release-day manual coordination. • Led a 5-developer team through sprint delivery and backend maintenance, aligning work distribution with individual strengths while keeping architectural decisions focused on reliability and maintainability.

• Took ownership of the Brandenburg tourism platform for 6 years, driving continuous feature development, production support, and technical improvements in close collaboration with the customer. • Designed and delivered reusable frontend components in Vue.js, including an interactive map widget for location-based points of interest that became a shared component across multiple tourism platforms. • Transformed customer requirements into maintainable software solutions, coordinating implementation decisions and ensuring reliable delivery of new functionality. • Maintained and evolved a large-scale tourism web ecosystem, handling troubleshooting, performance improvements, integrations, and long-term platform stability. • Collaborated with internal teams and external stakeholders to deliver digital tourism solutions used across multiple regional projects.

• Redesigned the e-pricetag platform architecture and led the prototype build in C#, Node.js, Kafka, Docker, and Kubernetes, establishing an event-driven backend for dynamic pricing workflows. • Implemented dynamic pricing logic that adjusted tag content from external signals such as weather and local events, turning the prototype into a differentiated retail automation product. • Integrated MSSQL, MongoDB, and Redis into the product stack to support fast reads, flexible catalog data, and durable transactional storage across distributed services. • Led and mentored 3 developers while coordinating hardware and software delivery with the device manufacturer, keeping product, embedded, and backend work aligned.

• Automated the order-to-print pipeline for a web-to-print platform, building the customer upload, pricing, routing, and status-update flow end to end and raising productivity by 50%. • Designed and delivered custom CMS platforms in PHP and C#, including a single-page browsing experience for a national radio station, to keep content editing and campaign delivery fully in-house. • Built a customer-behavior tracking prototype for physical stores, processing cart-location data overnight to generate shopping analytics that later became the foundation of Agitron d.o.o. • Led 3 developers through hiring, onboarding, and delivery coordination, using technical reviews and conflict resolution to keep multiple client projects moving in parallel.