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Dzmitry Radziuk

@dzmitryradziuk

Senior Backend Engineer building e-commerce services at Nexus with Node.js, TypeScript, and AWS serverless architecture.

Belarus

Message

At Nexus, I developed backend services for an e-commerce platform using Node.js, TypeScript, and an event-driven AWS serverless architecture. I designed an API composition layer and asynchronous integrations using EventBridge and SQS.

At Azumics LLC / Internet Fusion Group, I migrated Amazon and eBay integrations from legacy PHP to Symfony-based services and integrated Adyen, Braintree, and PayPal payment systems. I also served as Backend Team Lead for 8 months on a team of 3 backend developers.

In my independent projects, I develop backend applications and APIs and work hands-on with Go, PostgreSQL, and Docker. I’m also experimenting with Kafka and use Prometheus and Grafana to monitor applications.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

Independent / Personal Projects

Mar 2025 - Present (1 year 7 months)

Developed backend applications and APIs focusing on architecture, data modeling, and maintainability. Experimented with Kafka for event-driven communication and used Prometheus and Grafana for monitoring.

Go NodeJS PostgreSQL Kafka Docker REST APIs Prometheus Grafana

Senior Backend Engineer

Nexus

Mar 2023 - Mar 2025 (2 years)

Developed backend services for an e-commerce platform using Node.js/TypeScript and an event-driven AWS serverless architecture. Owned services end-to-end including design, data models, business logic, and deployment pipelines.

NodeJS TypeScript AWS EventBridge Amazon SQS DynamoDB AWS SAM GitLab CI CD Docker LocalStack

Senior Backend Developer / Backend Team Lead

Azumics LLC / Internet Fusion Group

Feb 2021 - Feb 2023 (2 years)

Migrated Amazon and eBay integrations from legacy PHP to Symfony-based services and integrated payment systems including Adyen, Braintree, and PayPal. Served as Backend Team Lead for 8 months overseeing delivery and code reviews.

PHP Symfony AWS SQS Lambda Adyen Braintree PayPal Event Driven Architecture

Senior Backend Developer

Itertech

Jun 2020 - Jan 2021 (7 months)

Developed a CRM backend using PHP, Symfony, and Slim 4, responsible for API design and architectural decisions. Optimized PostgreSQL and Oracle queries and built a message-driven architecture with RabbitMQ.

PHP Symfony Slim 4 PostgreSQL Oracle RabbitMQ GitLab CI CD

Senior Backend Developer

GreyLoyd

Sep 2019 - May 2020 (8 months)

Developed backend services using PHP 7, Symfony 4, REST/OpenAPI, and Oracle, focusing on data integrity and API maintainability. Introduced and maintained unit/functional tests, CI/CD, and Docker.

PHP Symfony REST OpenAPI Oracle Docker GitLab CI CD Bitbucket

Backend Developer

Itos/Quttiq for Kaliti

Sep 2016 - Sep 2019 (3 years)

Developed the backend for a construction and real estate platform using PHP 7, Yii2, Symfony 4, REST and GraphQL APIs. Refactored a large legacy PHP codebase and implemented asynchronous processing with RabbitMQ.

PHP Yii 2 Symfony REST GraphQL RabbitMQ S3 Lambda MySQL MongoDB Docker Bitbucket Pipelines

Full-Stack Developer

Support Group / Self-Employed

Apr 2013 - Sep 2016 (3 years 5 months)

Developed and maintained PHP web applications using Yii2, Kohana, Laravel, and MySQL. Worked on API integrations, legacy codebases, media processing with FFmpeg, deployments, and production support.

PHP Yii 2 Kohana Laravel MySQL FFMPEG API Integration