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I am an experienced and highly motivated Senior Back-End Software Engineer with over 13 years of expertise in designing and developing scalable, high-performance systems. I have a proven track record of building and leading back-end teams and delivering enterprise-level platforms in eCommerce, logistics, marketplaces, and affiliate networks. I specialize in microservice architectures, CI/CD, and containerization (Docker, Kubernetes, Helm), as well as relational and non-relational databases (PostgreSQL, MongoDB, Elasticsearch). I apply modern development practices such as SOLID, DDD, TDD, CQRS, and Event-Driven Design. I am known for reliability, collaboration, and persistence, and I enjoy mentoring teams and solving complex technical challenges to deliver real business value.…I am an experienced and highly motivated Senior Back-End Software Engineer with over 13 years of expertise in designing and developing scalable, high-performance systems. I have a proven track record of building and leading back-end teams and delivering enterprise-level platforms in eCommerce, logistics, marketplaces, and affiliate networks. I specialize in microservice architectures, CI/CD, and containerization (Docker, Kubernetes, Helm), as well as relational and non-relational databases (PostgreSQL, MongoDB, Elasticsearch). I apply modern development practices such as SOLID, DDD, TDD, CQRS, and Event-Driven Design. I am known for reliability, collaboration, and persistence, and I enjoy mentoring teams and solving complex technical challenges to deliver real business value.

Andrii Leshko

Back-End Developer, Web Developer, Full Stack Developer, +2

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I am an experienced and highly motivated Senior Back-End Software Engineer with over 13 years of expertise in designing and developing scalable, high-performance systems. I have a proven track record of building and leading back-end teams and delivering enterprise-level platforms in eCommerce, logistics, marketplaces, and affiliate networks. I specialize in microservice architectures, CI/CD, and containerization (Docker, Kubernetes, Helm), as well as relational and non-relational databases (PostgreSQL, MongoDB, Elasticsearch). I apply modern development practices such as SOLID, DDD, TDD, CQRS, and Event-Driven Design. I am known for reliability, collaboration, and persistence, and I enjoy mentoring teams and solving complex technical challenges to deliver real business value.…I am an experienced and highly motivated Senior Back-End Software Engineer with over 13 years of expertise in designing and developing scalable, high-performance systems. I have a proven track record of building and leading back-end teams and delivering enterprise-level platforms in eCommerce, logistics, marketplaces, and affiliate networks. I specialize in microservice architectures, CI/CD, and containerization (Docker, Kubernetes, Helm), as well as relational and non-relational databases (PostgreSQL, MongoDB, Elasticsearch). I apply modern development practices such as SOLID, DDD, TDD, CQRS, and Event-Driven Design. I am known for reliability, collaboration, and persistence, and I enjoy mentoring teams and solving complex technical challenges to deliver real business value.

Available to hire

I am an experienced and highly motivated Senior Back-End Software Engineer with over 13 years of expertise in designing and developing scalable, high-performance systems. I have a proven track record of building and leading back-end teams and delivering enterprise-level platforms in eCommerce, logistics, marketplaces, and affiliate networks.

I specialize in microservice architectures, CI/CD, and containerization (Docker, Kubernetes, Helm), as well as relational and non-relational databases (PostgreSQL, MongoDB, Elasticsearch). I apply modern development practices such as SOLID, DDD, TDD, CQRS, and Event-Driven Design. I am known for reliability, collaboration, and persistence, and I enjoy mentoring teams and solving complex technical challenges to deliver real business value.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Senior Software Engineer at Fozzy Group – Silpo

January 1, 2022 - Present

Led back-end development of the courier food delivery platform City Ryder, enabling the delivery of over 50,000 orders per day. Managed the back-end team from project inception to production release. City Ryder consists of mobile apps for couriers and a back-office platform for logistics teams. The system is deployed on AWS, using EKS, RDS, ECR, and S3. Delivered 47 PHP/Symfony services communicating via REST and RabbitMQ. Implemented route optimization, modern architecture patterns (SOLID, DDD, TDD, CQRS, Event-Driven Design, SAGA, API Gateway with circuit breaker, and SSO). Implemented relational and non-relational data stores (PostgreSQL, MongoDB, Elasticsearch). Set up monitoring with Grafana/Prometheus, caching with Redis, real-time communication with Socket.IO, and integrated payments and external systems. Followed Scrum and OWASP Top 10.

Senior Software Engineer at Epicenter M, Epicenter K

August 1, 2021 - January 31, 2022

Built a marketplace platform with a merchant back-office, addressing fast display of millions of items, implemented CQRS, and ensured data synchronization across services via RabbitMQ. Worked with Elasticsearch and PostgreSQL, performed data denormalization, and optimized queries with composite indexes.

Senior Software Engineer at Playtini

September 1, 2020 - August 31, 2021

Developed the Bannaza affiliate program using PHP and Symfony. Implemented a microservice-oriented architecture with synchronous REST and asynchronous RabbitMQ data synchronization. Analyzed large datasets in MariaDB to extract insights, integrated multiple payment systems and a custom payment gateway with automatic routing, and built an adaptable A/B testing configuration. Contributed an open-source BPMN parsing feature.

Senior Software Engineer at Platinium Group

October 1, 2019 - September 30, 2020

Contributed to a large-scale ticket store platform, including Juventus Tickets Shop, and ticket stores for Formula 1 and MotoGP. Implemented features for categories, cart, order processing, and authentication; optimized slow SQL queries and implemented Redis caching to improve performance; refactored legacy code and supported platform updates.

Middle Software Engineer at Oro, Inc

November 1, 2018 - October 31, 2019

Worked on the B2B eCommerce CMS platform (Oro). Resolved client tickets, delivered patches across versions, and improved modules such as search, authorization, categories, cart, and order processing. Gained strong proficiency with Symfony and Doctrine ORM, and maintained platform documentation; contributed to patch and minor releases and knowledge sharing.

Senior/Middle PHP Developer at WebCodium

May 1, 2015 - October 31, 2018

Led development of an advertising platform with PHP/Symfony, integrating Google Ads and Facebook Ads. Connected third-party systems including payment gateways and mailers, and solved complex optimization problems to improve client budgets and ad performance.

Middle/Junior PHP Developer at SiteImage

January 1, 2012 - May 31, 2015

Core developer of the eCommerce CMS ImageCMS. Implemented features such as Product Discounts, Banner Widgets, and Category Filters. Contributed to building a SaaS solution for creating online stores and developed HTML/CSS/jQuery templates for the CMS.