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Vladimir Markiv

@vladimirmarkiv

Senior Golang Developer at Vodafone who built billing and subscription services that cut new-tariff release time by 40%.

Russian Federation

Message

At Vodafone, I developed Go and gRPC services for tariff and subscription management, extracting business logic from a monolith and accelerating new-tariff releases by 40%.

I also implemented Kafka event delivery between billing and analytics services, and built payment processing with idempotency and retries that reduced erroneous charges by 20%.

At inDrive, I developed Go services for order processing and customer support, reducing processing time by 15%. I also worked on asynchronous order notifications and storage and caching improvements for high-load backend systems.

Experience

Work history, roles, and key accomplishments

Current

Senior Golang Developer

Current

Vodafone

Jul 2024 - Present (2 years 3 months)

Developed high-load backend services for roaming, core subscriber management, billing platforms, and real-time event processing. Implemented asynchronous event delivery using Kafka and built Go-based payment processing with idempotency and retries.

Go gRPC Kafka PostgreSQL Clickhouse Redis Prometheus Grafana Jaeger Kubernetes Helm GitLab CI CD Terraform Linux Git

Golang Developer

inDrive

Feb 2020 - Jul 2024 (4 years 5 months)

Developed high-load backend services for order processing and customer support, including request intake, categorization, routing, and order-status notifications. Implemented asynchronous notifications using RabbitMQ and set up ELK log collection and Sentry error tracking.