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Work experience

Backend Software Engineer (Python)

from 05.2025 to 05.2026 (1 year)
Metinvest Digital, Київ (IT)

Was a key engineer on building and extending a document-processing platform that required orchestrating OCR operations, pulling in SAP data, and Generative AI-based verification.

* Architected a successful migration from a legacy Django app to FastAPI that led to a 2x velocity in feature delivery, while keeping legacy SAP-driven workflows regression-free.
* Owned the backend implementation of new search, status management, and revision flows in the platform, maintaining a stable API contract.
* Implemented advanced classifications for PDF documents by combining OCR and generative AI (OpenAI APIs) that improved the productivity of the accounting department up to 20%.
* Did an architecture revamp for background workflows to substantially reduce the error rate through implementing proper reliability patterns like consistent timeouts, async job retry handling, and adding advanced observability.
* Implemented advanced data parsing functionality for extracting complete information from invoice documents that improved team operational velocity.

Backend Software Engineer (Python, Go)

from 09.2024 to 03.2025 (7 months)
TC Financial Resources dba Reach Global Media, Київ (IT)

* Built a Python-based data analysis framework correlating MongoDB data with external marketing and ad APIs (Facebook, Shopify, Google Ads, WordPress, ClickFunnels) to unify attribution and funnel reporting. Adopted by the team and improved technical support handling speed by 5 times.
* Designed and implemented a Go + gRPC service that aggregated data across internal microservices, providing a single entry point for cross-service queries backed by DynamoDB and MongoDB.
* Authored complete end-to-end feature delivery in a high-paced startup (including ClickFunnels integration — Portal API, gRPC, background workers).
* Mentored a QA engineer on how to effectively implement BDD testing across the whole product using Python, Behave, and GitHub Actions.

Backend Software Engineer (Python)

from 04.2022 to 09.2024 (2 years 6 months)
Dinamicka Development, Київ (IT)

Delivered backend systems across multiple client projects spanning real estate, document management, IoT, and EdTech. Owned API design, AWS infrastructure, and contributed to architecture standards and mentoring across a mixed team of developers and QA engineers.

**Real Estate SaaS Platform & AI Assistant** — Django, DRF, PostgreSQL, OpenAI API, Slack webhooks

* Built backend features for a CRM dashboard and real estate listings platform.
* Created an OpenAI integration for an agent-based chatbot inside the Django application.
* Developed a Slack-based AI bot that used government and open real estate databases to surface summarized market information; expanded the prototype into a shipped MVP.
* Implemented webhook endpoints and backend integration logic for Slack and OpenAI workflows.

**Document Management SaaS Application** — FastAPI, PostgreSQL, SQLAlchemy, Jinja2, React.js, Stripe

* Key backend developer for a SaaS document-generation platform with a React.js frontend.
* Built document generation workflows using Jinja2 templates and asynchronous background processing.
* Used a specification-first OpenAPI approach for API design and code generation.
* Integrated Stripe for payments; owned backend delivery through MVP release and post-release iterations.

**IoT Solar Panel Data Ingestion Platform** — Python, AWS Lambda, SQS, DynamoDB, IoT Core, CloudFormation, Terraform

* Designed a serverless data ingestion architecture for IoT solar telemetry.
* Used SQS for batch processing of incoming data before storing raw and aggregated data in DynamoDB.
* Built a prototype CI/CD and infrastructure-as-code setup for automatic serverless stack deployment, working with both CloudFormation and Terraform.

**BDD Test Automation Framework** — Selenium WebDriver, Behave, Python, GitLab CI/CD

* Implemented a BDD-focused test automation framework with a modular page object architecture.
* Built CI/CD integration using GitLab pipelines.
* Mentored QA engineers transitioning from manual testing into automation.

Software Developer

from 10.2021 to 02.2022 (5 months)
ARK CONNECT & MARKET GROUP, Київ (Маркетинг, реклама, PR)

Built automation tools and bots for marketing-related workflows.

**Telegram Automation & Marketing Bot Tools** — Python, Telethon, Telegram APIs

* Built a customer-facing Telegram bot that helped improve conversion and marketing engagement metrics.
* Developed Telegram user-simulation automation tools for chat/channel discovery and marketing-material promotion.
* Created Selenium-based browser automation tools for internal business needs.
* Supported the team in adopting browser automation and bot-related technologies to parse dynamic web pages and build custom programmable web services on top of existing websites.

Education

Khmelnytsky politechnic college

Electrician, Хмельницкий
Specialized secondary, from 2013 to 2016 (3 years)

Yarmolintsi technological lyceum

Ярмолинцы
Secondary, from 2011 to 2013 (2 years)

Computer operator

Additional education and certificates

IT Education Academy (Python Advanced, Data science, Django)

2019, 6

Robot Dreams Go Lang

2025, 6 місяців

Knowledge and skills

• Python
• Selenium
• Git, MySQL, SQLite3, NoSQL, MongoDB, REST Framework, Postman
• Django/Flask, PyTelegramBot, Telethon, aiogram HTML/CSS/Bootstra
• GitHub
• CSS
• Django
• PostgreSQL
• Docker
• SQLite
• MySQL
• Flask
• Знання принципів ООП
• Git
• AWS IAM
• AWS
• Django Rest Framework
• MS Azure

Language proficiencies

• English — above average
• Ukrainian — fluent

References

Nicholas Linn

Nicholas Linn

Chief information officer, Sygnal.io