Oleksandr Semenets
Software Developer
I'm Oleksandr, a backend-oriented fullstack developer with experience in Node.js, NestJS, Express, and databases like PostgreSQL, MySQL, and MongoDB. I also use React, Next.js, Docker, AWS, and Python with Django Rest Framework. I’m expanding into machine learning with Scikit-learn and TensorFlow, and enjoy building scalable, efficient systems.
Experience
06.2022 - 04.2025
Pharmacy chain “ANC”
Pharmacist
- Customer communication, attention to detail, stress management
- Organized workflow and managed pharmacy data
03.2020 - 05.2022
Pharmacy chain “911”
Pharmacist
- Handled customer requests and data processing
- Improved communication and teamwork skills
Projects
2025
Mebliok — Furniture Selling Platform
Fullstack Developer
- Developed a platform with user roles (buyer, seller, admin) using NestJS and React
- Designed PostgreSQL schema and optimized queries for performance
- Implemented Redis caching and deployed with Docker & Nginx on AWS
- Integrated JWT and OAuth (Google, Facebook) for authentication
- Added multilingual support and UI customization
11.2024 - Present
Car Sales Service
Fullstack Developer
- Created a car-selling platform similar to AutoRia with role-based access
- Implemented premium features and regional pricing
- Used NestJS, PostgreSQL, Redis, Docker, and AWS for scalable architecture
- Optimized Redis caching, improving API response time by 40%
2025
Blood Glucose Prediction
Machine Learning Developer
- Built an MVP for predicting blood glucose levels in type 1 diabetes patients
- Performed data cleaning and augmentation to improve dataset balance
- Trained ML models using Scikit-learn, Pandas, and NumPy for short-term forecasting
Education
Master's in Computer Science (In Progress)
Computer Science
Kharkiv National University of Economics
Bachelor's in Chemical Technology of Organic Substances
Chemical Technology of Organic Substances
University Name
Master's in Pharmaceutical Technology
Pharmaceutical Technology
College Nfau
Languages
English (B1)
Ukrainian
Skills
- JavaScript (Node.js, Express, NestJS)
- React, Redux, Next.js
- PostgreSQL, MySQL, MongoDB, Redis
- Docker, AWS (S3, Elastic Beanstalk, IAM), Kubernetes, Nginx
- Python, Django Rest Framework
- Machine Learning: NumPy, Matplotlib, Pandas, Scikit-learn, TensorFlow
- HTML, CSS, SASS