Freelancer profile translated to English.
Back to original languageAbout Konstantin
Computer development engineer with nearly 4 years of experience, entrepreneur and passionate about computing since always.
I am a versatile person with rich experience on both the back and front office sides.
French
Native or bilingual
English
Fluent
Russian
Native or bilingual
Spanish
Basic
Can work on-site
Angers (up to 50km)
Experience
- Conseil Départemental du Maine-et-LoireFull Stack DeveloperPUBLIC SECTORDecember 2022 - August 2025 (2 years and 8 months)Angers, FranceDevelopment and maintenance of internal applications
- Design, evolution, and maintenance of business web applications to unify data entry and updating via external APIs (e.g., SIREN, BAN).
- Operational maintenance of several applications on Java/Spring Boot, Python/Django, PHP/Symfony stacks.
Backend & API Development- Development of Python APIs (Django, Flask) dedicated to data management and exposure, including geographical data using PostGIS and Valhalla.
- Docker environment containerization.
- Implementation of Swagger/OpenAPI for automatic documentation.
Frontend Development & SPA- Development of a Vue.js SPA application, with conditional logic and backend API integration for automated document generation (PDF) and email sending.
Integration & CI/CD- Implementation of GitLab CI/CD pipelines to automate testing, integration, and deployment across multiple environments.
- Creation of automated tests with JUnit, Pytest, and Selenium IDE.
Interoperability & Connectors- Development of a connector between a PHP/Symfony business application and the department's new financial management solution.
- Conseil Départemental du Maine-et-LoireSoftware IntegratorPUBLIC SECTORMarch 2022 - December 2022 (9 months)Angers, FranceIntegration of tools and applications:
- Integration of new tools acquired by the community into the existing Linux server environment.
- Integration of open-source web applications for managing relationships between the Departmental Council and users.
Technical analysis and coordination:- Technical analysis in support of Project Management for functional and technical choices.
- Supervision and validation of the integration of the community's graphic charter into applications.
Configuration, testing, and quality:- Application configuration, acceptance testing, and functional conformity verification.
Documentation and support:- Writing technical and user documentation.
- Training and assistance for users on newly deployed software.
- EvolisSoftware Research and Development EngineerTECHJanuary 2020 - December 2021 (1 year and 11 months)Angers, FranceSoftware design and development for card printers
- Development of tools and applications on Windows, Linux, and Android to control, test, and calibrate printers.
- Integration of third-party equipment (e.g., scanner, magnetic stripe reader...) into the company's hardware solutions.
Windows Application Development- Development of applications in C# / WPF and C++ for calibration procedures.
Image Processing and OCR- Creation of an OCR demonstration tool based on Tesseract, dedicated to text recognition on plastic cards.
Android Mobile Development- Development of an Android application (Java) for printing personalized documents from user data.
Backend Maintenance- Maintenance of a Java/Tomcat API ensuring communication with a specific printer.
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Education
- Engineering DegreeESEO Angers2017