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Aleksei Belousov

@alekseibelousov

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Senior Software Engineer Kotlin | Java | Python Backend

Brazil

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What I'm looking for

I'm looking for a backend engineering position focused on modern JVM stack (Kotlin/Java + Spring Boot) and clean code practices. I value companies with strong engineering standards, solid test coverage, and a collaborative environment. Learning and applying AWS and Python for automation and data tasks is also part of my growth plan.

Senior Backend Engineer with 10+ years of experience in Kotlin, Java, and Python. I build scalable, testable services with Spring Boot and clean architecture.
Currently learning AWS and machine learning to broaden my backend expertise.

Stack: Kotlin, Java, Spring Boot, WebFlux, Liquibase, JUnit, PostgreSQL, Docker, Python (learning), AWS (learning)

Experience

Work history, roles, and key accomplishments

Software Engineer

World Wide Technology

Aug 2022 - Nov 2023 (1 year 3 months)

Worked on services for Fab.com (Epic Games) using Kotlin, Spring, AWS, and Python. Participated in development and maintenance of backend services, contributing to scalability and stability improvements.

Kotlin Spring Python Backend Development API Development Scalability Software Maintenance AWS

Software Engineer

Gazpromneft – NTC

Aug 2021 - May 2022 (9 months)

Maintained and enhanced logistics applications for the oil & gas industry. Utilized Java and Ceylon for development and system improvements.

Java Ceylon Logistics Application Maintenance Software Enhancement Oil & Gas Industry

Software Engineer

Gazprombank

Jun 2019 - Jul 2021 (2 years 1 month)

Achievements:
- After the release, the bank moved up from seventh to third place on the national mortgage rating.

Working on the services for a credit platform.
- api Implementation, integration, documentation improvements
- Test coverage 80%
- Leading of juniors (pair programming, tech sessions)

People management:
- Monthly check ups, personal development planing, employee retention

Spring Boot Kotlin Java WebFlux Liquibase API Design Mentoring Team Leadership Backend Development Credit Platforms Webflux

T-

Software Engineer

T-Systems

Feb 2015 - Jun 2019 (4 years 4 months)

Migrated legacy enterprise applications to modern Java versions and rewrote an Android application from scratch. Built integration services utilizing SOAP, WCF, and the .NET stack.

Java Android Development Enterprise Applications Legacy System Migration SOAP WCF .NET Integration Services enterprise applications

Junior Software Engineer

FrontSphere

Oct 2013 - Nov 2014 (1 year 1 month)

Performed full-stack development for a cloud-based call center platform in the finance and banking sectors. Developed a feature that saved every employee approximately 30 minutes daily.

Java Vaadin Liferay MySQL MongoDB BPMN JSP Cloud Platforms Fullstack Development Servlet

Junior Software Engineer

Sidenis

Dec 2012 - Sep 2013 (9 months)

Built an Android audio player and a desktop banking application for Swiss Re. Utilized Java Swing for the development of the desktop banking application.

Android Development Java Swing Desktop Applications Audio Players Banking Applications Software Development