Oleksii Falei
Verified Expert in Engineering
Python Back-end Developer
Chiang Mai, Thailand
Toptal member since June 10, 2022
Oleksii is a software engineer with nine years of experience in application design and development, specializing in Python back-end development. He has built new applications and improved companies' mission-critical existing products. Oleksii enjoys learning and applying new skills and technologies to solve problems efficiently.
Portfolio
Experience
- REST APIs - 9 years
- Python - 9 years
- Django REST Framework - 7 years
- Django - 7 years
- Amazon Web Services (AWS) - 3 years
- Pandas - 2 years
- Machine Learning - 2 years
- TypeScript - 2 years
Preferred Environment
Amazon Web Services (AWS), Linux, Python
The most amazing...
...thing I've developed was a pet project that grew into a working service by using existing skills and acquiring knowledge in machine learning and probability.
Work Experience
Founder
Algo Trading
- Built an automated algorithmic trading service using machine learning.
- Designed and implemented custom data structures, such as information-driven bars.
- Researched, developed, and tested a large number of trading strategies.
Senior Software Engineer
Exos
- Worked on the design and development of an event-driven serverless system.
- Contributed a large amount of code to the main serverless application.
- Created an elegant solution using the AWS Step Functions service for a problematic integration with a third-party service.
Senior Software Engineer
Exos
- Participated in the development of the company's platform architecture.
- Contributed a large amount of code to all core microservices.
- Refactored the microservice, which led to a significant reduction in the service's response time, improved the API, and made the admin UI more convenient.
Software Engineer
CyberVision
- Developed some of the back-end and front-end for a major project.
- Worked on a service that monitors the health of the main project.
- Significantly improved test coverage for all projects.
Experience
Algo Trading
Education
Master's Degree in Biomedical Engineering
National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" - Kyiv, Ukraine
Bachelor's Degree in Biomedical Engineering
National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" - Kyiv, Ukraine
Certifications
Graph Search, Shortest Paths, and Data Structures
Stanford University | via Coursera
Divide and Conquer, Sorting and Searching, and Randomized Algorithms
Stanford University | via Coursera
Fundamentals of Statistics
MIT | via edX
Machine Learning with Python: from Linear Models to Deep Learning
MIT | via edX
Probability - The Science of Uncertainty and Data
MIT | via edX
Skills
Libraries/APIs
REST APIs, Pandas, Scikit-learn, Node.js
Tools
PyCharm, AWS Step Functions
Languages
Python, TypeScript, Go, JavaScript, HTML
Frameworks
Django, Django REST Framework
Platforms
Amazon Web Services (AWS), Linux, AWS Lambda, Docker
Storage
Amazon DynamoDB, MySQL, PostgreSQL, Redis
Other
Engineering Software, Algorithms, Data Structures, Machine Learning, Research, Probability Theory, MLflow, Amazon API Gateway
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