Максим

Maksym Kovalenko
Java Developer

SUM MARY
Software engineer with strong ability to develop and optimize backend
systems.Passionate about writing clean, efficient, and scalable code while
collaborating with cross-functional teams to deliver high-quality
solutions.Experienced in Java, Spring Boot, and database management, with a keen
interest in continuous learning and problem-solving. Seeking to contribute my skills,
grow professionally, and work on impactful projects.

C ONTACT DETAILS
Phone:

Telegram: @kovalmdev

Email: kovalenkomax @gmail.com

Linkedin: [open contact info](look above in the "contact info" section) b

EXPERIE NC E
Java Developer at Kon ex, remote, Ukraine (November - April )
• Contributed to the development of internal software systems for managing
chemical production, quality control, and inventory tracking.

• Implemented backend logic in Java and Spring Boot to automate work ows such as
batch production scheduling, safety checks, and compliance reporting.

• Created RESTful APIs for integration between laboratory data systems (LIMS),
warehouse software, and ERP platforms.

• Worked closely with domain experts to translate chemical process requirements
into reliable and scalable code.

• Designed and maintained relational database structures (PostgreSQL) to handle
complex datasets, including material compositions, test results, and certi cations.

• Followed best practices for security, including validation and role-based access
control for sensitive operational data.

Key Achievements:

• Reduced manual data entry in QA/QC work ows by automating lab data
integration.

• Helped improve traceability and audit readiness by implementing detailed logging
and change tracking features.

Stack:
+
3
8
0
9
7
4
2
6
1
4
9
0
4
2
fl
fl
0
7
6
3
2
7
0
3
2
6
4
6
2
fl
0
fi
2
5
 Java , Spring Boot, Spring Data, Spring Security, Hibernate, Oracle, Maven, Git,
JUnit, RabbitMQ,Docker, AWS, Redis, Swagger, Agile.

Java Developer at Rogyn, remote, Ukraine (July - October )
• Developed and maintained backend systems to support construction project
management, including tools for scheduling, document control, and progress
tracking.

• Built RESTful APIs for web and mobile platforms used by engineers, architects, and
site managers to access project data in real time.

• Utilized Java and Spring Boot to implement business logic related to budgeting,
resource planning, and contract work ows.

• Integrated third-party services (e.g., mapping, payment systems) into the company’s
digital infrastructure.

• Collaborated with business analysts and project stakeholders to re ne requirements
and translate construction-speci c needs into robust software solutions.

• Designed database schemas and wrote SQL queries for PostgreSQL to manage
complex data structures such as blueprints, milestones, and subcontractor records.

Key Achievements:

• Streamlined project tracking by implementing a centralized system that replaced
multiple legacy spreadsheets.

• Contributed to faster decision-making by enabling real-time reporting on
construction progress and nancial metrics.

Stack:

Java , Spring Boot, REST, PostgreSQL, Hibernate, Maven, Git, JUnit, Swagger,AWS,
Scrum

Java Developer at Under Skin, remote, Ukraine (March - May )
• Participated in the development and maintenance of internal systems supporting
retail operations, including inventory management, order processing, and customer
data handling.

• Designed and implemented backend features using Java and Spring Boot,
contributing to the digital transformation of retail work ows.

• Developed RESTful APIs to support integration between internal tools and e-
commerce platforms.

• Worked with relational databases (MySQL/PostgreSQL), optimizing queries and
ensuring data consistency.

• Collaborated with cross-functional teams including marketing, logistics, and sales
to gather requirements and deliver tailored technical solutions.
2
1
1
1
fi
fi
fl
2
0
2
3
fl
2
0
2
2
2
0
fi
2
2
4
0
2
3
 • Wrote unit and integration tests using JUnit and Mockito to ensure code reliability
and maintainability.

Key Achievements:

Helped reduce order processing time by automating key steps in the ful llment
pipeline.

Improved system performance and scalability by refactoring legacy modules and
optimizing database interactions.

Stack:

Java , Spring Boot, Spring Data, Hibernate, MySQL, Maven, Git, JUnit, Mockito,
Docker, Azure, RabbitMQ, Redis, Scrum.

Technical support at Emedia, remote, Poland (December - February )
• Provided technical assistance to users of digital products and services, ensuring
timely and e ective issue resolution.

• Handled user requests related to connectivity, payments, account setup, and user
interface behavior.

• Communicated with customers in English via email, live chat, and a ticketing
system.

• Conducted basic functionality testing to reproduce and report bugs.

EDUCAT IO N
Uniwersytet Jagielloński ( - ) Kraków Poland.

Bachelor of Science in Computer Science.

SKI LLS
Programming Languages: Java, JavaScript, Python, C#, HTML, CSS

Backend: Spring Boot, Spring Data, Spring Security, Hibernate

Databases: PostgreSQL, MySQL, Oracle, MongoDB, Redis

Testing: JUnit, Mockito

Tools & Platforms: Maven, Gradle, Git, Docker, Docker Compose, Kubernetes,
GitLab, Swagger

Cloud & Messaging: AWS, Azure, Ka a, RabbitMQ, NATS

Principles & Protocols: OOP, SOLID, DRY, REST, HTTPS

Other: Linux, Thyme-leaf

LA NGUAGE S:
English - C , Polish - B , German - A , Ukrainian - native, Russian - native.
1
7
1
ff
2
2
0
1
9
2
0
2
2
3
fk
2
0
2
0
fi
2
0
2
1