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Denys IvanovDI
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Denys Ivanov

@denysivanov

Senior Golang engineer building scalable, maintainable microservice systems.

Portugal
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What I'm looking for

I am seeking backend roles focused on scalable microservices, robust integrations, and architectural ownership within collaborative teams that value reliability and technical excellence.

I am a Senior Golang engineer with 9+ years of backend experience building scalable, maintainable systems using object-oriented and microservices design patterns. I focus on solving real-world problems and adapt quickly to different tech stacks and existing implementations.

At Wizer Inc. I helped build a microservice-based system with Hexagonal Architecture and DDD, implemented Acronis, Stripe, and HubSpot integrations, migrated endpoints from Node.js, and improved reliability and synchronization features. Previously I restructured a high-load monolith into modular components, extended transactional-outbox-based microservices, and worked with AWS, Kafka, RabbitMQ, Docker, and Kubernetes.

My background includes PHP and full-stack work (Laravel, Vue), TCP protocol servers, mobile and Android integrations, and CRM/payment modules. I bring an analytical, detail-oriented approach and a proven record of delivering reliable backend services and integrations from the ground up.

Experience

Work history, roles, and key accomplishments

WI
Current

Senior Golang Engineer

Wizer Inc.

Nov 2024 - Present (1 year 2 months)

Participated in building a microservice-based system using Hexagonal Architecture and DDD; implemented Acronis, Stripe, and HubSpot integration features and migrated endpoints from Node.js to Go to improve reliability and synchronization.

Intellias Ltd logoIL

Middle Golang Engineer

Intellias Ltd

Sep 2022 - Nov 2024 (2 years 2 months)

Restructured a high-load monolithic Go service into modular components and extended/maintained microservices built on the transactional outbox pattern to improve maintainability and throughput.

IS

Full Stack Developer

IT Dream Service

Sep 2018 - Dec 2020 (2 years 3 months)

Built vehicle monitoring and control services (GPS + CAN) including partner web interface, client app, and backend TCP servers; delivered new features and fixes for alarm and admin systems.

LT

Software Engineer

Ltd Завод Резонанс

Mar 2018 - Aug 2018 (5 months)

Developed native Android mobile cash terminal communicating with fiscal devices and extended loyalty program backend functionality for retail chains.

II

Web Developer

Internet Agency Intelweb

Jul 2017 - Mar 2018 (8 months)

Developed CRM modules including click-to-call, operator chat, and call statistics; added features and fixes across Laravel, WordPress, OpenCart, and custom CMS projects.

LA

Web Developer

Ltd Advertising and Information Agency Перекрёсток

Feb 2015 - Jul 2017 (2 years 5 months)

Built modules for local government systems and a custom CMS, including voting, budget distribution, bicycle routes, and administrative/customer interfaces.

Education

Degrees, certifications, and relevant coursework

KU

Kryvyi Rih National University

Master of Engineering, Engineering

Engineering Master's degree from Kryvyi Rih National University.

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Denys Ivanov - Senior Golang Engineer - Wizer Inc. | Himalayas