Олександр

Oleksandr Khomanets
BACKEND NODE.JS ENGINEER

CONTACT PROFILE
Hi, I’m Oleksandr Khomanets, a dedicated Node.js
[открыть контакты](см. выше в блоке «контактная информация») Engineer with extensive experience in backend
oleksandr-khomanets development across industries such as social networking,
educational platforms, and HR. I bring deep technical
expertise in JavaScript, TypeScript, Nest.js, Express.js,
SKILLS and ORM tools like TypeORM, Sequelize, and Prisma.
JavaScript, Typescript With a strong focus on delivering efficient and scalable
solutions, I strive to continuously improve my skills,
Node.js, Express, Nest implement innovative features, and optimize API
React performance. My approach emphasizes clean,
maintainable code and collaborative teamwork to drive
PostgreSQL, MySQL, MongoDB, impactful results.
Firestore, Firebase, Redis
TypeORM, Sequelize, Prisma, WORK EXPERIENCE
Mongoose NikCode Nov 2024 – Jun 2025
Docker, Minio S3, Swagger, AWS Backend engineer
S3, Azure Blob, FCM
As the backend engineer in a microservices-based
Microcervices
architecture, I was responsible for designing, developing,
BUSINESS and optimizing the backend infrastructure. My role involved
Music tech, Social network, integrating third-party services, ensuring scalability, and
Education, Healthcare maintaining efficient data storage solutions while adhering to
security and compliance requirements.
EDUCATION Key Responsibilities:
Khmelnytskyi Polytechnic College
- Microservices Development: Designed and maintained
Junior Bachelor - Software
multiple microservices using NestJS, implementing
Engenieering
TCP-based communication for efficient service
2019 – 2024
interaction.
National Aerospace University "Kharkiv - Database Management: Worked with both SQL
Aviation Institute"
(MySQL, Prisma) and NoSQL (MongoDB, Mongoose)
Bachelor – Computer Science
databases, optimizing queries and ensuring data
2024 - 2027 consistency.
 - External API Integrations: Developed and maintained
LANGUAGE SKILLS
integrations with third-party services for data exchange
English Intermediate and automation.
Ukrainian Native - Cloud Storage Management: Built a dedicated
microservice for handling file uploads and storage in a
Russian Fluent
cloud-based environment, ensuring isolation from the
API Gateway.
- API Development: Built and maintained RESTful APIs
using NestJS, ensuring high performance and scalability.
- Scalability & Performance Optimization: Optimized
database queries, implemented caching strategies, and
enhanced API response times for better performance
under high load.
Accomplishments:
- Successfully migrated microservices into a monolithic
structure to support a trial version of the product.
- Integrated a scalable search solution, significantly
improving data retrieval speed for large datasets.
- Designed a robust backend system that efficiently
handled third-party integrations while maintaining
security and compliance standards.
- Improved storage handling by isolating cloud storage
operations within a separate microservice, enhancing
security and maintainability.

RexSoft Feb 2024 – Oct 2024
Backend engineer
I contributed as a Backend Engineer to an innovative
educational platform, focused on creating an engaging and
accessible learning environment for a diverse user base.
Project Highlights:
- Educational Platform Development: Contributed to the
backend of an educational platform designed to support
diverse users and foster interactive learning.
Responsibilities:
- Developed and maintained APIs for seamless Spotify
integration using Nest.js
- Developed and optimized API endpoints using Node.js,
Express.js, Nest.js and TypeScript to enable a scalable
backend for educational tools
- Managed relational data storage with Redis,
SequelizeORM and PostgreSQL, emphasizing data
consistency and performance
- Integrated Minio S3 for efficient file storage and
retrieval processes
- Participated in deployment and testing through Docker
Compose, ensuring reliable operations across
environments
- Implemented and maintained MongoDB as a NoSQL
solution, supporting flexible data storage for dynamic
content
- Assisted with bug fixes and new feature development to
enhance educational software for a better user
experience
Accomplishments:
- Enhanced database efficiency by refining data models
and utilizing Sequelize features, leading to a cleaner,
modular codebase
- Strengthened backend skills in Node.js and TypeScript,
gaining hands-on experience with SQL and NoSQL
database management
Additional Contributions:
- Proposed improvements to API structure based on user
feedback, creating a more intuitive experience
- Contributed to platform scaling, adapting backend
solutions for increased data loads and growing user
demand
- Benefited from collaborative mentorship, expanding
both technical and team-oriented skills and gaining
insights into project life cycles and Agile practices
This experience broadened my understanding of backend
development, data management, and scalable architecture,
preparing me to contribute to high-impact projects in future
roles.

Prosearch Jan 2023 – Feb 2024
Backend engineer
I contributed to a dynamic startup project Prosearch in
Ukraine, taking part in the creation of a service marketplace
platform that connects customers with providers for a range
of tasks.
Project Highlights:
- Service Marketplace Development: Collaborated on a
web platform where users can post tasks and providers
can bid, aimed at streamlining service connections
across various categories.
- Frontend Interface Design: Assisted in developing a
user-friendly interface, creating intuitive UX flows that
helped improve user engagement and retention.
Responsibilities:
- Contributed to the design and development of RESTful
APIs using Nest.js and TypeORM
- Managed data storage solutions using Redis and
PostgreSQL for scalable performance
- Integrated AWS S3 for efficient file storage and retrieval
processes
- Developed secure authentication and authorization
mechanisms to protect user data
- Collaborated with frontend teams to debug and enhance
platform functionalities
Accomplishments:
- Adapted quickly to frontend frameworks and improved
JavaScript skills, enabling faster feature development
- Contributed to creating a clean, modular codebase that
facilitated easier maintenance and scalability
- Collaborated with a cross-functional team, gaining
insights into project lifecycle and Agile methodologies

Additionally:
- Helped launch the platform within the tight project
deadline, balancing quality with speed
- Contributed ideas to optimize UX based on user
feedback and testing
- Gained valuable mentorship experience, refining both
technical and collaborative skills