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Oleksandr – Spring Boot, AWS, Java, experts in Lemon.io

Oleksandr

From Ukraine (GMT+3)

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Back-end Web DeveloperStrong senior
Tech lead
Hire developer
11 years of commercial experience
Banking
Fintech
Gamedev
Marketing
Retail
Marketplace
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Oleksandr – Spring Boot, AWS, Java

Oleksandr is an experienced back-end developer with a decade of Java expertise. He has contributed to architectural solutions and taken on leadership roles. Oleksandr thrives in collaborative environments and enjoys coding challenges. His keen interest and extensive background in DevOps complements his back-end development skills.

Main technologies
Spring Boot
6 years
AWS
6 years
Java
10 years
Additional skills
Docker
Hibernate
PostgreSQL
PHP
JavaScript
Kotlin
Kafka
ElasticSearch
Redis
Scala
Kubernetes
Spring WebFlux
MongoDB
React
DevOps
Spring
PostgreSQL
MongoDB
Terraform
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Senior Java Developer
Oct 2020 - Ongoing3 years 7 months
Project Overview

Fintech start-up.

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Responsibilities:
  • Worked as a senior software engineer;
  • Took part in coding/architecture decisions;
  • Mentored Junior developers.
Project Tech stack:
Java
Spring Boot
AWS
Senior Java Developer / Team Lead
Aug 2019 - Aug 20201 year
Project Overview

Financial company that works on transferring money to African countries.

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Responsibilities:
  • Transformed a monolithic architecture into microservices, optimizing scalability, maintainability, and performance.
Project Tech stack:
Java
Spring
Hibernate
Reactive Stack
PostgreSQL
AWS
Senior Full-Stack Developer
Aug 2018 - Sep 20191 year 1 month
Project Overview

Content delivery system for marketing platform.

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Responsibilities:
  • Managed and enhanced the functionality of the content delivery system, ensuring its continuous operation;
  • Implemented new features to meet evolving needs.
Project Tech stack:
Java
Spring Boot
Hibernate
Netflix stack
AWS
Terraform
Java Developer
Jun 2016 - May 20181 year 10 months
Project Overview

Rest API for the mobile game for kids.

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Responsibilities:
  • Developed and maintained the REST API for both the mobile game and analytical platform;
  • Ensured seamless communication and efficient data exchange between clients and servers.
Project Tech stack:
Java
Spring
Hibernate
Vaadin
Jersey
Full-stack Developer
Feb 2013 - Aug 20163 years 6 months
Project Overview

The marketplace for beauty products where people can view, pick and buy the goods.

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Responsibilities:
  • Developed both the back-end and front-end components for the website, ensuring a cohesive and user-friendly experience across all aspects of the platform.
Project Tech stack:
Java
Scala
Play Framework
PostgreSQL
MongoDB
AWS

Education

2014
Computer Science
Master's

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