Go Developer / Software Engineer

Designed and implemented core services using Hyperledger Fabric, including smart contract logic for account management and emission, achieving 6k+ TPS. Introduced asynchronous transaction signing queue via NATS Jet Stream for integration with national cryptography service, reducing load on core service and improving response time by 40%. Accelerated transaction processing by 25% through Redis caching of account data. Achieved 80%+ unit and integration test coverage, including smart contract logic, which helped identify and fix edge-case bugs. Integrated Prometheus and Grafana monitoring for tracking service metrics and Hyperledger network state. Configured CI pipelines in GitLab CI for building and testing microservices, participated in deployment to Kubernetes using Helm. Proposed and led migration of transaction validation logic to a dedicated microservice, improving system modularity and reducing deploy risk.

Architect and develop REST and gRPC microservices integrating AI-driven features with SAP S/4HANA and internal enterprise platforms, reducing data sync latency by 35%. Design and implement backend services for synchronizing data between internal systems and external enterprise platforms. Implement monitoring and metrics collection for distributed services using Prometheus and Grafana. Containerize and deploy services to a Kubernetes environment with CI/CD pipelines for automated testing and delivery. Build and maintain a monitoring and alerting system (metrics, logs, tracing) to track service health and detect bottlenecks in real time. Reduce MongoDB read load by 30% and p95 latency by 45ms through strategic Redis caching of hot data paths. Optimize Kafka consumer groups and partition strategies, increasing message processing throughput by 40%. Redesign database indexing strategies and query plans, cutting analytics query time by 60% and improving feedback pipeline efficiency.

Developed a REST API with role-based access control, booking conflict resolution, and business rules validation. Optimized SQL queries and refactored core logic to support 1,000+ concurrent users, reducing API response time by 30%. Implemented Redis caching for hot booking slots, easing database load and improving interface performance. Developed an alert system for schedule conflicts and deviations with audit-friendly logging. Set up Prometheus metrics and Grafana dashboards: API SLA, booking count, peak loads, and response latency. Built internal tooling and automation scripts to streamline developer workflows, reducing manual deployment steps by 50%. Contributed to onboarding documentation and code reviews, improving team velocity during a period of rapid headcount growth.

Optimized SQL queries using EXPLAIN/ANALYZE, reducing response time by 2.3x. Developed real-time RTSP/WebRTC (Pion) video streaming with asynchronous transcoding using Kafka + FFmpeg, cutting CPU load by 35% and latency by 40%. Implemented complex business logic for data selection and IKZP calculation, improving accuracy and reducing processing time by 30%. Designed and implemented an advanced organization search engine with multi-parameter filtering and full-text search, efficiently handling 50k+ records with sub-100ms response time. Implemented a tree structure storage algorithm using the Nested Sets model, accelerating tree queries by 40% and simplifying tree management. Integrated MinIO object storage for document management, supporting multi-format file handling across three government projects.