Олександр

Alexander Yusov
Back-End Engineer

📍 Odesa, Ukraine | 📧 [відкрити контакти](див. вище в блоці «контактна інформація») | 📱 [відкрити контакти](див. вище в блоці «контактна інформація») 🔗
LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація») 🐙 GitHub:
github.com/Alexander0Yusov ✈️ Telegram: @Alexander_Yus

PROFILE
Detail-oriented Back-End Engineer specializing in the Node.js ecosystem
(NestJS, TypeScript). Experienced in designing microservices architectures,
implementing rigorous integration testing standards, and configuring
CI/CD pipelines. Focused on building scalable, maintainable, and
thoroughly tested applications that ensure strong business guarantees and
optimal resource utilization.

SKILLS
Backend & Frameworks: Node.js, NestJS, Express, TypeScript, JavaScript
Architecture & API: Microservices, gRPC, REST API, CQRS
Databases & ORM: PostgreSQL, Prisma ORM, TypeORM, MongoDB,
Mongoose, SQL
Message Brokers: RabbitMQ
Testing: Jest, Integration Testing, Unit Testing, DB state isolation
DevOps & Infrastructure: Docker, Kubernetes (K8s), CI/CD Pipelines
(Jenkins), Git
Security & Auth: OAuth2, JWT, Sessions flow

EXPERIENCE
Back-End Engineer | June 2025 – Present

Microservices Architecture: Engineered and maintained scalable
backend services using NestJS and TypeScript. Designed robust inter-
service communication using gRPC and RabbitMQ, ensuring reliable
data flow across distributed systems.
Testing & Quality Assurance: Established a strict integration testing
architecture using Jest. Implemented deterministic test bootstraps
with real PostgreSQL databases and Prisma, handling schema
migrations, truncations, and concurrency locks to ensure complete

test isolation and reliability.
Database Management: Designed relational database schemas and
managed complex migrations using Prisma ORM. Implemented
advanced transactional patterns, including the Outbox pattern, to
guarantee data consistency.
Infrastructure & CI/CD: Participated in the deployment lifecycle.
Worked with declarative CI/CD pipelines (Checkout, Build Docker
images, Push, and Deploy to Kubernetes clusters). Configured
application environments for internal and cross-namespace K8s
networking.
API & Security: Developed secure authentication and authorization
flows (OAuth2, JWT, local/session storage). Refactored domain layers to
centralize visibility logic and eliminate code duplication.

EDUCATION
IT-INCUBATOR | 2025 – 2026 Back-End Engineering Program

GoIT | 2022 – 2023 Front-End Engineering Program

Donbass State Engineering Academy | 2005 – 2010 Bachelor’s in Engineering
Mechanics

LANGUAGES
Ukrainian: Native
English: Pre-intermediate (Actively studying)