Robert
Dimitrov

Enterprise on-premises platform engineering focused on database infrastructure migrations and scalable technical design.

• • Platform Engineering: Core components for an on-premises platform installer spanning infrastructure and tooling.
• • Infrastructure Migration: Database infrastructure migration for existing production services without customer-visible downtime.
• • Technical Design: Proof-of-concept (POC) implementations and co-authored technical design documents.

Data services and APIs for the core storage layer of a large-scale cloud environment.

• • Core Data Services: Scalable storage-layer services using Go and Java backend components.
• • API Design: RESTful and GraphQL APIs for efficient data operations and service integrations.
• • Cloud Infrastructure: Maintained resilient backend systems using AWS services, PostgreSQL and Elasticsearch.

Security and integration features for the SumUp Card ecosystem, including authentication flows and Open Banking compliance.

• • SumUp Card: Delivered core features and services within the Banking engineering team.
• • Security Architecture: Multi-factor authentication (MFA) service and authorization flow.
• • Open Banking: Implemented and integrated Open Banking APIs to extend financial capabilities.

Mobile applications for smart home networking, device state management, and Bluetooth connectivity.

• • iOS Application: Bluetooth-based discovery and control of network devices via RESTful endpoints.
• • Resilient Connectivity: Caching and offline mode for unreliable network states.
• • State Management: Diffing algorithms for available and unavailable network hardware.

Co-founded a product studio and managed the technical development of interactive iOS applications.

• • Product Development: Multiple shipped applications, including a dedicated iPad vector design tool.
• • Graphics Engineering: Dynamic vector brush engine responsive to Apple Pencil pressure and tilt data.

Portfolio of iOS games and consumer-facing applications.

• • Mobile Development: Information and storefront iOS applications for various clients.
• • Game Programming: Multiple shipped iOS games using the Cocos2D engine.

Cloud-agnostic B2B2C platform for catalogue discovery, real-time coordination, and multi-party deal flows.

• • Backend: Explicit SQL with pgx and PostgreSQL for controlled queries, transactions, and data integrity.
• • Search & Cache: Meilisearch catalogue search with DragonflyDB caching, distributed locking, and pub/sub.
• • AI Cataloguing: LLM-powered listing creation for both single items and bulk catalogue creation.
• • Infrastructure: Kubernetes-based deployment model supporting a cloud-agnostic architecture.

Event ticket marketplace focused on event sourcing, compensating sagas, and high-contention reservation flows.

• • Event Sourcing: Seat inventory as event streams with optimistic concurrency to prevent double allocation.
• • Sagas: Redpanda-backed order and inventory choreography with compensating transactions.
• • Read Models: Projection workers and live seat-state updates for customer and vendor interfaces.

Microblogging platform with Go/Rust services, gRPC boundaries, and event-driven fanout and indexing.

• • Microservices: Go and Rust services with gRPC-based internal communication.
• • Data Pipeline: Event-driven outbox workflows via Redpanda for fanout and Meilisearch indexing.
• • Client Interface: SvelteKit, TypeScript, and vanilla CSS web interface.

Distributed timer service designed to manage timers across partitions without overlapping execution.

• • Coordination: Memberlist gossip and consistent hashing for partition ownership rebalancing across nodes.
• • Synchronization: PostgreSQL LISTEN/NOTIFY and Valkey logs for config updates and timer firing history.

Image-sharing platform structured as a modular monolith with a Go backend and Server-Side Rendered (SSR) SvelteKit frontend.

• • Application Core: RESTful Go backend using pgx and explicit PostgreSQL interactions.
• • Data Pipeline: Outbox-driven Redpanda workflows for fanout and Meilisearch indexing.