Aleš Albert Kilbergr

Defined architecture of an event-sourced payroll and time tracking system, enabling auditability and deterministic recalculation offinancial data Introduced event sourcing as a core architectural pattern (Postgres + event streams), establishing foundation for long-term system evolution Decomposed legacy monolithic system into domain-driven bounded contexts with clear ownership and interfaces Established engineering standards across codebase (testing, CI/CD, trunk-based development), improving delivery consistency and system quality Acted as technical authority across critical system components, guiding architectural decisions and mentoring engineers

Led engineering organization through architectural and process transformation, aligning teams around shared system design and delivery standards. Delivered redesigned client onboarding flow, significantly reducing onboarding time and enabling operational scalability Consolidated fragmented technology landscape, reducing maintenance overhead and improving developer productivity Transformed distributed, loosely aligned contributors into a cohesive engineering team with clear ownership and collaboration model Redesigned system architecture with focus on security, data isolation, and simplified communication between services and integrations Introduced event-driven architecture to decouple systems and support scalable integrations

Kafka Messaging Platform (Chat System) Led the design and adoption of a Kafka-based messaging backbone connecting distributed services with chatbot engines Defined and drove transition toward event-driven architecture, eliminating tight coupling across internal APIs Established guarantees for message ordering, delivery reliability, and fault tolerance across the messaging pipeline

Application Platform (APIs & Integrations) Owned the architecture of REST and GraphQL APIs, enabling third-party integrations with the chat platform Defined platform boundaries and extensibility model for external applications interacting with core messaging capabilities Designed and enforced application installation and permission framework, ensuring secure and tenant-aware access control Drove development of an integration platform enabling external developers to build on top of core system capabilities