Іван

Ivan Posheniuk
Python Developer

Profile Details
Experienced backend developer with over 7 years of practice delivering Dnipro
scalable, high-performance systems. Strong focus on designing clear Ukraine
and maintainable architectures, optimizing data workflows, and [open contact info](look above in the "contact info" section)
driving full-cycle product development — from concept to deployment. [open contact info](look above in the "contact info" section)
Often worked in different size, fast-moving teams where I combined
responsibilities across backend development, infrastructure, and Skills
systems integration. Python

Celery
Employment History
Kafka
Third-leg US company
September 2022 — Present AWS
A technology-driven delivery network that leverages crowdsourced
drivers to enable same-day, local, and long-distance delivery across Kuber
a wide range of item sizes. The platform integrates with retailers and
RabbitMQ
logistics providers to offer scalable, on-demand delivery services with
real-time tracking and dynamic routing. SQLAlchemy
• Designed and developed experimental backend services for
Alembic
delivery optimization.
• Created PoC applications to test system capabilities under load DjangoORM
and edge conditions.
• Worked closely with a tech lead and fellow developer to iterate on Flask
architectural solutions. Fast-API
• Focused on speed, fault tolerance, and modularity in system
prototypes. PostgreSQL
• Benchmarked performance and identified system bottlenecks.
Redis
• Collaborated on API design and data modeling.

Product for controlling sub-companies and employees
September 2021 — February 2022
App that provides an agile solution for controlling, processing and
managing consumer companies, sub-companies and its employees.

• Developed and investigated into main problems of the app
• Documentation creating
• Merging different versions of an old app
• Refactoring
• Unit tests coverage

Product for delivering satellite imagery
July 2020 — August 2021
Application that collects and process satellite imagery for following use
in imagery data analyze.

• Develop the solution for new satellites imagery appearance and
delivering
• From azure to postgres migration
 • Documentation creating
• Code refactoring
• Integration tests developing
• Custom migrations adding
• Project supporting

Satelite imagery storage
August 2017 — March 2020
Cloud storage for satellite data storage and
processing\distributing\sharing. Storage provides all necessary tools
for gis specialists and scientists. With marketplace for satellite data
providers. Storage connect all microservices and services between.

• Developing server-side functionality.
• Project Leading.
Building solution from the scratch
• Preparing infrastructure for further scaling

Education
Dnipro Scientific Lyceum of Information Technologies
September 2011 — May 2014

Bachelor, Oles Honchar Dnipro National University, Applied
Mathematics, Dnipropetrovsk
September 2014 — May 2018