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Dmitry Pekutko

Backend Python developer

Last projects

Sep 2024present

Backend Python developer

Project 1

Stack: Python, Django, PostgreSQL, Redis, Celery, Docker, Google Calendar API, Stripe, AWS

Responsibilities:

  • Worked on the payment experience, decreased “failed payment” metric from 9% to 2%, significantly boosting the company's profits.
  • Integrated Stripe Express into the application over a 1-month period, allowing to perform automatic payouts to clients rather than do manually, which saved ~10 human hours per month.
  • Added e2e tests into core logic application, increasing test coverage of the core monolite from 59% to 89%
Feb 2023Sep 2024

Backend Python developer

Project 2

Stack: Python, Django, FastAPI, PostgreSQL, MongoDB Kafka, gRPC, Redis, Pydantic, Celery, Docker, Kubernetes, Grafana, AWS, React, Mobx, MaterialUI

Responsibilities: 

  • As a part of a team of 14 was responsible for optimizing server applications and designing new features. Increased speed of core decision making logic by ~25%, that improved user experience significantly. This affected the increase in the percentage of user return to the app by 8%.
  • Optimized loading speed of candle graphs by 64% using SQL optimizations on server side and React caching on client side, which increased the average user session time on the graph page by 21%.
  • Designed scaling strategy for a risk management microservice which was able to manage >100000 paralleled kafka events per second
Nov 2021Jan 2023

Backend Python developer

Project 3

Stack: Django, PostgreSQL, RabbitMQ, Redis, Celery, Docker, SciPy, Langhain, OpenAI AP

Responsibilities:

  • Created complex Retrieval Augmented Generation chain using LangChain and streaming. Average time of retrieving therst chunk of data for a client side was ~1.2 seconds.
  • Increased main page loading speed by 15% using SQL optimizations.
  • Achieved test coverage for the new microservice to 93%