Borys

Borys Hlukhinskyi
Backend Developer
[відкрити контакти](див. вище в блоці «контактна інформація»), Telegram

Summary
Backend Developer with 3+ years of commercial experience designing scalable
microservices and high-performance RESTful APIs within the .NET ecosystem.
Proficient in Clean Architecture, asynchronous messaging RabbitMQ, Kafka, and
database optimization PostgreSQL, EF Core. Proven track record of boosting system
performance: reduced cloud database costs by $1,125 month and architected real-time
SignalR services that slashed HTTP traffic by 70%. Focused on writing clean,
maintainable code and delivering resilient backend systems.

Skills
– Languages & Frameworks: C#, .NET, .NET Core, ASP.NET Core
– Databases & Data Access: SQL, PostgreSQL, Entity Framework Core, Dapper,
LINQ Focused on writing clean, maintainable code and delivering resilient
backend systems.
– API & Web Services: REST API, Web API, HTTP, JSON
– Architecture & Design: OOP, SOLID Principles, Design Patterns, MVC,
Microservices Architecture
– DevOps & Tools: Git, Docker, CI/CD, Linux, Kubernetes
– Messaging & Caching: RabbitMQ, Redis, Kafka
– Testing & Code Quality: Unit Testing, Automated Testing, Code Review,
Refactoring
– Cloud Platforms: Microsoft Azure, AWS

Experience
Backend Developer | NDA

Jun 2023 – Present
Responsibilities and Achievements:

– Developing, implementing, and maintaining back-end solutions and REST APIs;
– Designing application architecture and implementing business logic;
– Analyzing high-level requirements and breaking them down into actionable tasks;
– Working with databases, writing and optimizing SQL queries;
– Integrating external APIs, services, and information systems;
– Developing new functional modules and maintaining existing functionality;

– Refactoring and optimizing code to ensure quality, readability, and
maintainability;
– Analyzing, diagnosing, and resolving technical issues;
– Monitoring applications, implementing logging, and ensuring system stability;
– Designing scalable solutions and participating in architectural discussions;
– Applying SOLID principles, Clean Code practices, and design patterns;
– Maintaining infrastructure and contributing to CI/CD configuration and application
deployment;
– Introduced Redis caching for frequently requested data, reducing database load
from 3000 to 1100 queries per minute and cutting cloud database costs by $1125
per month.
– Improved API response times by 15% through SQL query optimization, reducing
latency and improving application responsiveness;
– Reduced database query execution time by 20% through query optimization and
efficient data access patterns;
– Reduced recurring technical issues by 15% through systematic debugging,
logging, and application monitoring;
– Built a SignalR WebSocket notification service to replace client polling, reducing
HTTP requests from 20000 to 6000 per minute.
– Improved system scalability to support 20% more requests through backend
architecture optimization;
– Added email and push notifications for status changes of user requests, reaching
2000 users per day and reducing support questions 150 per week.

Education
B.Sc. in Computer Science
OTFK ONTU, Odesa