Юрій

Yuri Papunitskyi
Backend Developer

Date of Birth 11 December 1990

Phone number [відкрити контакти](див. вище в блоці «контактна інформація»)

E-mail: [відкрити контакти](див. вище в блоці «контактна інформація»)

TG @yurapap

Education
Sumy State University, Electronic devices, Engineer of electronics and
telecommunications.
Ended 2012

Experience
1.Specialist of Information Technology and Technical Information
Protection. September 2012 - January 2015
2. Chief Specialist of the Department of Applied Software and Computer
Systems in Main Department of State Treasury Service of Ukraine in
Sumy region. January 2015 to April 2016
3. PJSC “Sumyoblenergo” WEB developer in the laboratory of automated
communication in telecommunication service.
. May 2016 July 2019
4. R Soft Technology PHP developer (remote)
5. W-Axis PHP developer July 2019 to April 2022 city Kyiv
6. airSlate pdfFiller project from October 2022

Key skills
Backend: PHP (Laravel, Symfony), Node.js (daemons development)
Frontend: TypeScript (Angular Framework)
Databases: MySQL, PostgreSQL, SQL
API Development: RESTful API design and implementation
Asynchronous Processing: RabbitMQ, creating async jobs in PHP
Real-time Communication: Socket.io
Infrastructure & DevOps: Docker, AWS (S3, EC2, SageMaker, ECR,
Lambda)
Deep Learning: Experience with deploying document restoration models
and inference services on AWS SageMaker
Version Control: Git (GitHub, GitLab)
Operating Systems: UNIX-like systems (Linux, macOS)
Web & Telephony Servers: Configuration and maintenance of web servers
and Asterisk servers
Security: Talsec integration, SSL pinning, and encryption
CI/CD: Automated build, test, and deployment pipelines using GitHub
Actions

Additional Information
​ Over the past few years, I have developed a number of interesting
projects, primarily using PHP with MySQL or PostgreSQL on the
backend, and TypeScript (Angular framework) on the frontend.
I created a web-based video conferencing management system that
operates in real time using Socket.io and Node.js, with PHP and MySQL
for the backend, and Angular for the frontend.
I also developed a Telegram bot for scanning and saving channel
messages based on user-defined keywords, leveraging Elasticsearch
technology.
Additionally, I have implemented new features in CRM systems,
integrated delivery service APIs for Asia and Europe, generated
accounting documents, and performed legacy code refactoring.
I designed and deployed a document restoration system (DocRes)
powered by deep learning models on AWS SageMaker, enabling scalable
inference for document enhancement and restoration tasks.
I worked with Talsec for encryption, runtime protection, and SSL
pinning integration to enhance mobile application security.
I automated the entire CI/CD pipeline on GitHub Actions, including
build, testing, Docker image creation, and deployment to AWS
environments.
In my daily work, I follow SOLID principles to ensure clean,
maintainable, and scalable code.

Professional Overview
• State Treasury Service of Ukraine — automated the generation and
distribution of financial reports for internal staff, including scheduled
report creation and email delivery.

• Sumyoblenergo — designed and implemented a video conferencing
management system with participant management and activity
monitoring. Built backend services in PHP, implemented real-time
communication via WebSockets, used Node.js as an event-processing
worker, and developed the frontend using Angular. The system was
integrated with an IP telephony server.

• R-soft (part-time) — developed backend services for small business
e-commerce projects, focusing on custom features and stable integrations.

• W-Axis — worked on report generation with complex SQL queries,
query optimization, and large-scale code refactoring. Integrated courier
services, implemented queues and microservices for shipment status
tracking, and maintained and upgraded core system components. Acted
as the lead backend engineer on one of the projects.

• airSlate (pdfFiller) — contributed to the development and support of
core features for LinkToFill, eSign, and document sharing services.
Designed and built a document restoration system from scratch using
AWS SageMaker, implemented full CI/CD pipelines, Dockerized services,
developed backend components, and used message queues and
microservices for asynchronous document processing and editing
workflows.