Діана

Diana Berebko — Python Backend Developer
Ukraine (UTC+3) • Remote • GitHub: https://github.com/dicomeinit • Email: dicomeinit@gmail • Telegram:
@diana_drlng

Summary
Backend Python Developer (Django/FastAPI) with ≈3 years of experience across ERP, inventory and
manufacturing workflows. I design reliable REST APIs, optimize slow ORM/SQL, build async pipelines with
Celery + RabbitMQ, and ship Dockerized services behind Nginx. Comfortable with WebSockets for real‑time
features (scanning, dashboards). Focused on performance, data migrations and production reliability.

Core Skills
Python • Django • Django REST Framework • FastAPI • SQLAlchemy • PostgreSQL • MSSQL • Redis •
RabbitMQ • Celery • Docker • Docker Compose • Nginx • Linux • Git • CI/CD (GitHub Actions) • Pytest •
Asyncio • WebSockets • Pydantic • Alembic • REST API design • ORM/SQL optimization • Logging/Monitoring

Professional Experience
Python Developer — SmartAVI, Inc.​
North Hollywood, CA | Jan 2023 – Present

●​ Shipped a standalone Django application integrated with InflowInventory (SO/WO/stock/shipping)
for core ERP flows.​

●​ Built an advanced OCR system for shipping labels with +70–80% text‑extraction accuracy using
multi‑approach preprocessing (6 strategies) and a custom scoring pipeline; robust patterns for
SO/PO/tracking/address (regex + fuzzy matching).​

●​ Designed REST APIs for scanning workflows, status management and BOM calculations.​

●​ Performance: reduced key query times 1611 ms → 219 ms (~87% faster) and cut server load by
30–50% via N+1 removal, indexing and caching.​

●​ Led production database migration MSSQL → PostgreSQL with zero downtime, ETL scripts and
data‑parity checks.​

●​ Implemented real‑time WebSocket services (Django Channels / Flask WS) for scanning dashboards
and hardware/video control.​

●​ Built Celery + RabbitMQ pipelines (email notifications, serial generation, imports).​

●​ Delivered a Test Manager service (projects/suites/cases/runs) with RBAC, automated runs and
result aggregation; Dockerized.​

●​ Customized Django Admin with bulk operations and advanced filtering to speed up back‑office
operations.​
 ●​ Dockerized services behind Nginx; automated SSH deployments to VPS/Raspberry Pi; monitoring &
structured logs.​

Python Developer — BitLord Search - Short-term engagement​
Apr 2021 – Jul 2021

●​ Added API endpoints, integrated Elasticsearch, configured Celery tasks for background processing.​

Senior Auditor — Russell Bedford RCG​
Nov 2017 – May 2021

●​ Managed audit engagements, client communication, deadlines and process rigor that translate to
structured engineering work and ownership.​

Achievements
●​ Cut p95 on critical endpoints from 1611 ms → 219 ms (~87% faster); reduced server load 30–50%.​

●​ Zero‑downtime MSSQL → PostgreSQL migration with ETL and parity checks.​

●​ Real‑time scanning & dashboards via WebSockets.​

●​ Shipped Test Manager service with RBAC, automated runs and result aggregation.

●​ Multi‑approach image preprocessing (contrast, denoise, sharpen, adaptive binarization); custom
scoring to pick best OCR pass.

Domain Experience
ERP, inventory & manufacturing (Sales Orders, Work Orders, stock/shipping), BOM calculation, barcode
scanning, data migration, test management, video‑signal control via WebSockets integration.

Tools & Practices
Agile/Scrum • Code reviews • CI/CD (GitHub Actions) • Unit/Integration tests with pytest • Structured logging
& alerts • Linux servers • SSH automation • Release checklists / healthchecks