Денис

VOROBOV DENYS
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) |
github.com/Denivor007 | [open contact info](look above in the "contact info" section)

BACKEND DEVELOPER

Professional Summary

Backend .NET Developer with strong expertise in building distributed systems, REST
APIs, and event-driven architectures. Worked with high-load transaction processing,
HSM cryptography (3DS), XML signatures, Kafka, and complex SQL/PL-SQL logic. I
improve existing systems: reduce complexity, refactor legacy code, and design scalable
components aligned with DDD principles.

Hard skills

Backend & .NET: C#, ASP.NET Core (Web API, DI, Middleware), Microservices, DDD
Cloud & DevOps: Azure, Docker, CI/CD basics
Databases: PostgreSQL, Oracle, MySQL, PL/SQL, SQL Profiler
Event-driven: Apache Kafka, Service Bus, event workers
Security: 3DS digital signatures, Hardware Security Modules (HSM)
Tools: Git, NuGet, MSBuild, AutoMapper, Entity Framework Core
Other: Algorithms, System Design, OOP, Design Patterns

Soft skills

Logical thinking and perseverance
Public speaking and communication
Fast learner and adaptive to new technologies
English: Upper-intermediate+ level

Key Competencies

.NET development, Web development, ASP.NET, OOP principles, Design patterns,
Algorithms, Data structures, SQL and Database, System Design, Basic Front-end

PROFESSIONAL EXPERIENCE

Sep 2024 – now. Software-Engineer. InnRoad, Cloud-Based Hotel Management
Software.

Designed and delivered new system features, improved code
maintainability and reduced complexity through refactoring.
Participated in architecture and system design sessions, improved
modularity and reduced coupling between components.
Led technical planning for user stories and features, including
specification writing, task breakdown, and estimation.
Supported and modernized legacy code
Identified and eliminated a critical legacy design flaw that propagated
system-wide, improving long-term code health.
Delivered modular and extensible implementations that reduced code
complexity and enabled easier onboarding of new features.

May 2023 – Aug 2024. Software-Engineer. UPC, Card transaction processing company.

Improved performance of high-load systems, optimizing response times
and reliability.
Implemented XML encryption and signatures for 3DS to enhance
transaction security.
Integrated Kubernetes probes for application health checks and monitoring.
Integrated Apache Kafka for real-time data processing and messaging.
Integrated Hardware Security Modules (HSM) for secure key management.
Managed databases using JDBC and wrote efficient PL/SQL scripts.
Performed debugging and refactoring to improve code quality and
maintainability.

EDUCATION

MSCS - Yuriy Fedkovych Chernivtsi National University

2019 - 2024

Technological practice in UKEESS Software House
Jun 2022 - Jul 2022| Java core, Spring Framework base