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Ihar Bulaty

@iharbulaty

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Senior software engineer at EPAM building a real-time contact-center platform for 10k+ concurrent telephony sessions.

Poland

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At EPAM Systems, I’m building a real-time contact-center SaaS platform designed to handle 10k+ concurrent telephony sessions. I architected its fault-tolerant, multi-region event-driven system and designed the processing layer to respond immediately to user actions and telephony events.

On a people-intelligence platform at EPAM, I led a team of five engineers and delivered five microservices, scaling the backend to 1M+ events per day. Earlier at Klika Tech, I worked on an IoT platform for HVAC systems, including real-time telemetry services and a migration to DynamoDB for horizontal read scalability.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer (Backend / Node.js)

Current

EPAM Systems

Dec 2024 - Present (1 year 10 months)

Building a high-load, real-time contact-center SaaS platform from scratch in a secure, regulated enterprise environment. Architected a fault-tolerant multi-region event-driven distributed system handling 10k+ concurrent telephony sessions.

NodeJS TypeScript NestJS AWS Amazon EKS Kubernetes Lambda Amazon SQS MSK Kafka RabbitMQ DynamoDB S3 Cloudwatch Terraform Docker ArgoCD REST APIs Jest Pact Cursor Spec Driven Development Contract Testing

Team Lead

EPAM Systems

Dec 2024 - Feb 2026 (1 year 2 months)

Led a team of 5 engineers, introducing code quality standards and a code review process. Designed and delivered 5 microservices and introduced event-driven architecture, scaling the backend to 1M+ events per day for 50k+ users globally.

Senior Software Engineer (Backend / Node.js)

Klika Tech

Jan 2022 - Nov 2024 (2 years 10 months)

Scaled real-time telemetry ingestion for an IoT platform for HVAC systems, implementing CQRS-based telemetry services and event-driven Kinesis consumers. Drove decomposition of monolithic components into microservices.

NodeJS TypeScript AWS Lambda Kinesis IoT Core EventBridge AWS ECS API Gateway AWS Batch DynamoDB DAX Timestream Neptune S3 Cloudwatch AWS CDK GraphQL Redis MongoDB Jest Docker Grafana k6 CQRS Event Driven Architecture

Full-Stack Software Engineer (JavaScript / Node.js / React)

EPAM Systems

Mar 2019 - Dec 2021 (2 years 9 months)

Built an IAM platform for secure management of users and credentials, implementing a secure authorization layer over SSO. Delivered responsive UI and optimized client-server session handling for reliability and security.