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Denys Ivanov

@denysivanov

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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

Current

Senior Golang Engineer

Current

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.

Golang Domain Driven Design gRPC Stripe GCP NATS Docker Kubernetes

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.

Golang Kafka RabbitMQ AWS EKS Terraform Helm Spf13 Cobra Gocraft Dbr

Senior PHP Engineer

Intellias Ltd

Mar 2021 - Sep 2022 (1 year 6 months)

Designed and maintained a customer-facing service integrated with the Customer Data Platform and CRM using Laravel, improving customer interaction workflows and system integrations.

PHP Laravel CRM Customer Data Platforms REST APIs MySQL Unit Testing CI CD

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.

PHP Laravel Vue.Js AngularJS Swoole Workerman TCP MySQL

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.

Android Java Bluetooth Scala Play Framework ReactJS Backend

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.

Laravel Redis PHP WordPress OpenCart CRM JavaScript

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.

PHP Web Development Frontend Backend Civic Tech Project Delivery