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Rostyslav Valko
Python Developer
| [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) |
| https://github.com/valkorostyslav |

Profile
I am pursuing a degree in Computer Science while actively working on commercial projects. My
experience has strengthened my skills in Python development and backend technologies. I apply
SOLID principles consistently in my work and have a B2-level proficiency in English, allowing me to
collaborate effectively in international teams. I am passionate about working in environments focused
on learning, innovation, and achieving goals, and I am eager to contribute and grow
professionally.

Skills
Programming languages/Technologies: Python, JavaScript, SOLID, OOP
Frameworks: Django, DRF, FastAPI, Flask, WebSockets, Elasticsearch, SQLAlchemy, RabbitMQ, Celery,
Pytest
RDBMS: MySQL, PostgreSQL, SQLite, MongoDB
Tools & Libraries: Visual Studio, Postman, SwaggerUI, Docker, CI/CD, GitHub Actions, Alembic,
Boto3, AWS(EC2, S3, Systems Manager Parameter Store)
Version control: Git
Operating System: MacOS, Linux

Experience
TALENT BAY | MAY 2024 – JUNE 2025
Responsibilities:
 Designed and implemented RESTful APIs using Django, focusing on clean architecture and
performance.
 Handled complex data processing tasks using Celery for background execution and PostgreSQL for
data storage.
 Collaborated within a Scrum team to deliver iterative product updates and feature releases.
 Established testing protocols using Postman and wrote unit tests to minimize production bugs.

COAX | JUNE 2025 – NOW
Responsibilities:
 Developed scalable RESTful APIs with Django/DRF and maintained real-time features using
WebSockets (Django Channels).
 Integrated Elasticsearch to optimize data retrieval and handled asynchronous background
processing using Celery.
 Designed and implemented a comprehensive analytics logging system to track user behavior and
system performance metrics.
 Managed cloud infrastructure on AWS (EC2, S3) and configured Systems Manager Parameter
Store.
 Containerized applications with Docker and supported CI/CD automation pipelines.
 Communicated directly with a UK-based client to clarify requirements and provide technical
updates.

Languages
English – B2, Ukrainian - Native