Roman M. — Java Backend Engineer

Expertise in Back-End Web, DevOps.

Last verified on June, 2026

Core Skills

Java

TypeScript

Spring

Spring Boot

Bio Summary

Backend Engineer with 4+ years of experience in Java, TypeScript, and Python, working with Spring Boot and NestJS in microservices architectures.
Experience in healthcare integrations: worked with Epic/MyChart, HL7 (R4) data processing and conversion into internal services.
Built and maintained backend services handling high-load systems using Kafka, Redis, Cassandra, and PostgreSQL.
Developed integration services for third-party systems, including batch processing and REST-based communication in AWS environments.

Technical Skills

Programming Languages	Java, JavaScript, Lua, Python, TypeScript
AI & Machine Learning	AI, Keras, PyTorch, TensorFlow
Java Frameworks	Hibernate, Spring, Spring Boot
Java Libraries and Tools	Jersey, MyBatis
Python Libraries and Tools	Keras, PyTorch, TensorFlow
JavaScript Frameworks	NestJS
Databases & Management Systems / ORM	Cassandra, Hibernate, Liquibase, MongoDB, MySQL, OpenSearch, PostgreSQL, Redis
Cloud Platforms, Services & Computing	AWS, Azure
Amazon Web Services	AWS ECS (Amazon Elastic Container Service)
Azure Cloud Services	Azure DevOps
QA, Test Automation, Security	Allure Report, Apache Maven, JUnit, Mockito
Web/App Servers, Middleware	Apache Tomcat
SDK / API and Integrations	API, Swagger
Scripting and Command Line Interfaces	Bash
Deployment, CI/CD & Administration	CI/CD, GitLab CI, Gradle, Jenkins
Virtualization, Containers and Orchestration	Docker, Kubernetes, Terraform, Vagrant
Third Party Tools / IDEs / SDK / Services	Eclipse
Operating Systems	FreeBSD, Linux, Windows
Version Control	Github Actions
Logging and Monitoring	Grafana, Prometheus
Message/Queue/Task Brokers	Kafka, RabbitMQ
Methodologies, Paradigms and Patterns	REST, Scrum, SOLID
Other Technical Skills	Apache Derby, Openresty

Work Experience

Server Engineer, DevEdge

Duration: Jun. 2025 - Now

Summary: Platform integrating mobile client-side libraries and apps with mobile network carrier systems, designed to handle millions of concurrent API calls with high scalability and security.

Responsibilities:

Developed and scaled backend infrastructure to support the platform.
Secured the backend systems.
Integrated with mobile client-side libraries and carrier systems.

Technologies: TypeScript, NestJS, Lua, Openresty, Postgres, Cassandra, Redis, Kafka, Docker, Kubernetes, Swagger, Opensearch, Grafana.

Java Backend Engineer, Navierre

Duration: Nov. 2024 - Apr. 2025

Summary: Client-server medical service platform integrating third-party medical services via REST APIs to provide enhanced healthcare solutions.

Responsibilities:

Developed Java services for a healthcare platform integrating third-party systems
Processed and transformed HL7 (R4) data into internal service formats
Worked on batch data loading and integration flows between external systems and core services
Built and maintained REST APIs for internal communication between services
Contributed to system refactoring to improve maintainability

Technologies: Java, Spring Boot, PostgreSQL, Hibernate, Liquibase, Docker, Swagger.

Cloud and DevOps Specialization Trainee, Epam Campus (Training)

Duration: Aug. 2024 - Jul. 2025

Summary: Training program focused on Linux, Bash scripting, CI/CD tools, Azure cloud services, and infrastructure automation using Terraform and Vagrant.

Responsibilities:

Learned Linux operating system and Bash scripting.
Explored CI/CD tools and Azure cloud capabilities.
Practiced infrastructure automation with Terraform and Vagrant.

Technologies: Linux, Networking, Bash, Docker, Python, Vagrant, CI/CD, Azure, Azure DevOps, Terraform, Az Monitor

Java Backend Engineer, Micro Focus (MF Connect)

Duration: Aug. 2021 - Jul. 2024

Summary: MF Connect is a software solution providing connectivity and integration features tailored to customer requirements, supporting business operations through reliable backend services.

Responsibilities:

Developed new features based on customer requests.
Maintained and troubleshot existing codebase.
Collaborated with cross-functional teams to integrate additional APIs.

Technologies: Java, Apache Tomcat, Junit, Eclipse Jersey, Apache Derby, MyBatis, Gradle.

Java Backend Engineer, Impltech (Inventor)

Duration: Mar 2021- Jul 2021

Summary: Inventor is a microservice-based service focusing on backend development and database management to support scalable and maintainable applications.

Responsibilities:

Developed services within a microservice architecture.
Maintained and developed databases.
Containerized applications using Docker to improve deployment consistency.
Created API documentation with Swagger to facilitate integration.

Technologies: Java, Liquibase, Spring, Spring Boot, Postgresql, Docker, Swagger.

Education

Bachelor degree in Computer Science
NTUU KPI Ukraine/Kyiv
2018 - 2022

Certification

Cloud and DevOps Specialization Certificate
2025/07
Natural Language Processing in TensorFlow
2024/04
Convolutional Neural Networks in TensorFlow
2024/01
Convolutional Neural Networks
2023/04
Improving Deep Neural Networks: Hyperparameter Tuning, Regularization and Optimization
2022/06
Neural Networks and Deep Learning
2022/03

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