At Centrofinans, I designed and built a shared Python library that 40+ company services are built on. It provides base service classes, clients, logging, OpenTelemetry tracing, and Prometheus metrics; launching a new service went from several days to about an hour plus CI/CD.
I also built an internal proxy that converts between HTTP and RabbitMQ or Kafka in both directions, with 91 services communicating through it. I worked on about 50 external API integrations and built disbursement and repayment processing for 8–10k operations a week, including duplicate-debit protection.
At IntexSoft, I built an Elasticsearch search microservice for a corporate social network, integrated with other services over gRPC. I also developed a company-profile consolidation service and raised a large project's test coverage from 70% to 85%.
As a Python Developer (contract) at Etagi Development, I rewrote a legacy Telegram bot as a newly architected Python application, reducing response time from 3–4 seconds to a few milliseconds and errors from about 600 a week to isolated cases. I also built in-bot admin tools and launched a FastAPI website for a subsidiary.
