Максим

Maxim Kovalchuk
Nationality: Ukrainian Date of birth: 29/05/1997 Gender: Male

Phone number: [open contact info](look above in the "contact info" section) Email address: [open contact info](look above in the "contact info" section)
LinkedIn: [open contact info](look above in the "contact info" section)
Home: 02055 Kiev (Ukraine)

ABOUT ME

Summary I am a passionate and experienced Senior Developer specializing in backend and desktop applications
using C#/.NET. I thrive on challenging tasks, logic puzzles, and have a positive and communicative personality. My
motto: "Code is like humor. When you have to explain it, it’s bad."

I communicate effectively with the team, quickly get up to speed on new projects, and foster a healthy, productive
work atmosphere. For me, it is not just about writing code, but about creating solutions that deliver business value
and a great user experience. I have relevant experience and can easily work with legacy code.

Experience in IT
Since 2017.

Core Skills
• Programming Languages: C#, .NET (Framework & Core), JavaScript, TypeScript, HTML5, CSS
• Frameworks & Tools: ASP.NET, WinForms, WPF, MVC, DevExpress, NHibernate, Entity Framework, REST API,
RabbitMQ
• Databases: MS SQL Server, SQL, Oracle, PL/SQL
• IDEs & Tools: Microsoft Visual Studio, Visual Code, SSMS, Git (GitHub), NuGet, MSBuild
• Other Technologies: Docker, Kubernetes, CI/CD, Jenkins, VMware, Azure, AWS
• Methodologies: Agile (Scrum), TDD, OOP, Design Patterns (MVC, MVP, MVVM)

SKILLS

C# (.Net Framework & .Net Core) / Unit of Work ORM / Frameworks: MVC, XPO, NHibernate, EntityFramework,
WinForms, ASP.NET / Tools & Framework: Git, Jenkins, AWS, Bitbucket, Jmeter, Rest Assured, Postman, Shell / GIT
(GitHub) / SQL Server Management Studio (SSMS) 2008-2017 / Mongo db / Ms. SQL Server / Client-Server
programming / Backend development / C#/WinForms/DevExpress / Framework Devexpress / Practical
Experience in Asp.net core, MVC and C# / RESTful api / Bootstrap / JSON / WPF using MVVM / HTML5/CSS,
Javascript / Docker

Other

Node.js + TS / JavaScript Framework (React & Vue.js) / architecture (MVVM, MVP, MVC) / Object-Oriented
Programming / Agile (Scrum) / Pattern Design / Unit-Testing

AI

Cursor.ai / Claude.ai

WORK EXPERIENCE

CQUELLE – Kyiv, Ukraine
Website: https://cquelle.com/ | Email address: [open contact info](look above in the "contact info" section) | Business or sector: Human health and social
work activities

Full-Stack ERP Software Engineer
[ 01/2026 – Current ]
Development of an AI-powered ERP product for the US healthcare sector (blood donation/healthcare).

Key Responsibilities & Achievements:

• Full-Stack Development & High Productivity: Managed the full development lifecycle and system
maintenance (.NET, React, TypeScript). Accelerated new feature development delivery speed by 30% by
actively integrating AI tools (Cursor, Claude AI) and optimizing internal workflows.
• Database Management & Performance Optimization: Independently designed and optimized complex
scripts and transactions in cloud databases. Implemented efficient indexing, significantly boosting system
performance and query execution speed.
• REST API Design: Fully developed and optimized RESTful APIs (GET, POST, PUT, PATCH, DELETE) with a strong
focus on low latency, high data throughput, and reliability.
• End-to-End Ownership: Independently planned architectural solutions, implemented features end-to-end
from concept to release, and provided ongoing maintenance.
• Standards & Compliance: Ensured high security and reliability standards when handling sensitive US
healthcare data (HIPAA compliance).

Abona – Kyiv, Ukraine
Website: https://www.abona-erp.com/uk/ | Email address: [open contact info](look above in the "contact info" section) | Business or sector:
Transportation and storage
C#/.Net Engineer
[ 10/2023 – 11/2025 ]
• Developed the Abona-ERP product, a comprehensive enterprise resource planning solution.
• Conducted thorough project assessments and formulated precise requirements.
• Designed robust architectures for scalability and performance.
• Developed cross-platform desktop, web, and mobile applications.
• Ensured rigorous testing for functionality, security, and performance.
• Provided post-launch support and continuous optimization.
• Collaborated with front-end engineers and stakeholders to integrate back-end functionalities.
• Optimized performance, troubleshoot, and debugged issues.
• Contributed to architecture planning and technical decision-making.
Tech Stack: C#, .NET, WinForms, DevExpress, REST API, ASP.NET, RabbitMQ, MS SQL
Reat+Note.js, TS, Docker + AI tools: Cursor and Claude.ai

DXC Luxoft – Kyiv, Ukraine
Website: https://www.luxoft.com/ | Business or sector: Professional, scientific and technical activities
Senior Software Developer
[ 01/2022 – 08/2023 ]
• Developed C#/.NET console applications and managed MS SQL DB in the Fincone business domain.
• Responsibilities included software development, code writing, testing, and documentation.
• Utilized tools like Git, Microsoft Visual Studio, SSMS, and MSBuild.
• Worked with remote desktop protocols and technical documentation.
• Domains: Banking, Finance IT, Financial Industry Technology
Tech Stack: C#, .NET, Git, SSMS, MSBuild, UML Diagrams, Unit Testing

Diebold Nixdorf – Kyiv, Ukraine
Website: https://www.dieboldnixdorf.com/en-us/ | Business or sector: Information and communication
SW Engineer
[ 01/02/2020 – 20/05/2023 ]
SW Engineer at Diebold NixdorfKyiv, Ukraine | February 2020 – May 2023
• Developed CRM solutions for gas/petrol stations using .NET technologies.

• Designed and maintained scalable and high-performance microservices.
• Performed system integration, testing, troubleshooting, and resolution.
• Participated in code reviews and collaborated with the client’s team.
Tech Stack: C#, .NET, WinForms, SSMS, MS SQL

eDev (Elfo srl) – Kyiv, Ukraine
Website: http://www.edev.com.ua/
.Net/Full Stack Developer
[ 01/01/2019 – 01/02/2020 ]
• Worked with C#/.NET Core, MS SQL, JS, vue.js, and NHibernate ORM.
• Configured web servers (IIS) and maintained a continuous integration system.
• Managed release and update processes, system health monitoring, and security control.
• Identified and resolved bottlenecks in the existing architecture.
Tech Stack: C#/.NET Core, MS SQL, JS, vue.js, NHibernate ORM

DeckRobot – Kyiv, Ukraine
Website: https://www.deckrobot.com/
C# Developer
[ 04/2017 – 12/2018 ]
• Developed desktop applications and add-in plugins for PowerPoint.
• Collaborated with the UI/UX team to ensure a seamless user experience.
• Participated in code reviews, troubleshooting, and debugging.
• Stayed updated with industry trends to propose innovative solutions.
Tech Stack: C#, MS SQL, WPF

Cyber Bionics Systematics – Kyiv, Ukraine
Address: 19 Evgena Sverstyuka Str, Kyiv (Ukraine) | Website: https://edu.cbsystematics.com/en/ | Business or
sector: Education
Special education teaching associate professional
[ 01/10/2017 – 01/06/2019 ]
Consultant, teacher and teacher assistant of .Net/С#

RenderATL – Kyiv, Ukraine
Website: https://www.renderatl.com | Business or sector: Information and communication
C#/.Net Developer
[ 01/2015 – 04/2017 ]
• Development of backend services for event-management platform (.NET 6, REST API).
• Implementing payment workflows (Stripe API) and user authentication.
• Designing microservices architecture for ticketing and analytics modules.
• Optimizing SQL Server queries for high-load traffic spikes.
• Integrating 3rd-party marketing tools (HubSpot, Mailchimp).
• Writing CI/CD pipelines (GitHub Actions) and automated tests.

EDUCATION AND TRAINING

Computer Science
Taras Shevchenko National University of Kiev [ 01/09/2015 – 01/07/2019 ]
Address: Bogdana Gavrilishina st., 24, 04116 Kiev (Ukraine) | Website: http://www.univ.kiev.ua/en/ | Field(s) of
study: Computing

- Faculty of Information Technology

- Specializations and Educational Program- Computer Science;
- programming in Visual Studio (C# / .Net)
- Bachelor degree (full-time basis), graduated in 2019

Computer Science
National technical university of Ukraine "Igor Sikorsky Kiev Polytechnic Institute" [ 01/09/2019 – Current ]
Address: Room 316, 317, Build.18, 41, Politehnichna St., 03056 Kiev (Ukraine) | Website: https://kpi.ua/en/faculty/
fivt | Field(s) of study: Computing

- Faculty of Informatics and Computer Science
- Specializations and Educational Program- Computer Science;
- programming in Visual Studio (C# / .Net)
- Master degree (part-time basis), graduated in 2021

LANGUAGE SKILLS

Mother tongue(s): Ukrainian | Russian

Other language(s):
English
LISTENING C1 READING C1 WRITING C1
SPOKEN PRODUCTION C1 SPOKEN INTERACTION C1

Levels: A1 and A2: Basic user; B1 and B2: Independent user; C1 and C2: Proficient user

PROJECTS

Projects
1. Property Register and Banking Assets Assessment (Feb 2018 - Apr 2018)
2. Educational Progress Information System (May 2018 - Jun 2018)
3. Face Recognition System Using Computer Vision Machine Learning (May 2019 - Jun 2019)
4. Two-Particle System for Testing Students (Mar 2019 - Sep 2019)

JOB-RELATED SKILLS

Job-related skills

- wide p
rofessional experience with the software environment Visual Studio (from 2015);

- professional programming skills in C#/.Net (Desktop);

- OOP;

- Windows Forms, WPF;

- Client–server model;

- Software architectural patterns: MVC, MVP, MVVP;

- patterns of design with C#;

- SQL knowledge, ORACLE, PL/SQL; understanding principles of relational DB;

- some experience in HTML, JavaScript, CSS, TS, Angular, XAML.

HOBBIES AND INTERESTS

Other skills

Gaming, Diving (Certified PADI Advanced Open Water Diver), Traveling, Hiking, Skydiving, Airsoft, Paintball, Bonistics,
and Numismatics

CERTIFICATIONS

Certifications

"Microsoft Dynamics CRM Developer"

course duration: 100h

company: "UDS Consulting" - Microsoft Implementation Partner

certificate issued by: Savran N. W., director of "UDS Consulting"

date and place: 15th Jan 2018 in Kiev