Artur Karunas

- Developed the backend of a microservice in Golang for cryptocurrency transactions processing on the TRC20 network. - Created and maintained project documentation, ensuring ease of support for 27 endpoints. - Implemented unit tests for service functionality, achieving 80% code coverage. - Designed and organized collections in Postman. - Monitored the system and performed SRE tasks using Grafana, Jaeger, and Rancher. - Stack: Go (Gin), PostgreSQL, Kafka, gRPC, Grafana, Rancher, Jaeger, Docker, Kubernetes.

- Developed a Go-based service for automatic tracking of cryptocurrency transactions between the company’s internal wallets using the TRON blockchain. - Eliminated the need for manual transaction requests to management, removing 100% of administrative delays and improving the efficiency of financial analysis. - Maintained the service for 3 months: optimized performance, fixed bugs, and ensured stable operation. - Added concise usage documentation for the service, enhancing its future maintainability.

- Developed the backend for an art gallery application. - Tech stack: Golang, MySQL, Docker, WebSocket, JWT, Postman. - Achievements: Enhanced project security by 20% through OWASP audit implementation, delivered a production ready version in 4 months, accelerated deployment by ~50% using Docker, and ensured easy maintenance of 40 endpoints.

- Built a Go-based mailing service that forwarded landing page inquiries to corporate emails.