Maskym

MAKSYM
Lodz
[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)

POPOVYCH [open contact info](look above in the "contact info" section)
a00a83398
https://github.com/DecimusMM
.NET Backend Engineer

.NET Backend Developer with hands-on production experience building SKILLS
and maintaining a high-traffic SaaS platform (200k API calls/day). Proficient
in C#, Clean Architecture, CQRS, and REST APIs. Computer Science student Core: C#, .NET C ore 6 +, .NET
at University of Łódź seeking a backend internship to deepen expertise in Framework 4 .8+, ASP.NET C ore, EF
real-world engineering environments Core, Clean A rchitecture, CQRS,
SOLID

WORK EXPERIENCE API & Security: REST APIs, JWT
Authentication, Swagger / O
penAPI,
OAuth2
Ethereal Core • Remote • 03/2026 - 06/2026
.NET Backend Developer • Full-time Database & Testing: Unit Testing,
PostgreSQL, SQL S erver
• Developing and maintaining SEODesk backend for an SEO monitoring
SaaS platform handling 200k API calls/day with 99.5% uptime, using Management S tudio
.NET 10. Tools & Workflow: Git, Linux,
• Worked on role-based REST API implementation including OAuth2 Postman, Docker
authentication, building manual CQRS handlers with query/command
separation. Language: English B
2, Polish B2,
Ukrainian N
ative
• Resolved permission and HTTP method validation bugs
(PATCH/DELETE), standardized mutation response IDs, and added
integration tests, achieving comprehensive API coverage.
EDUCATION

Bachelor in Computer
Science
University of Łódź
Lodz
GPA: 4.80/5.0
10/2025 - Present