Gregory Tertyshny

Address: Kyiv, Ukraine
Phone: +380994355814
Email: tertyshny.gregory@protonmail.com
GitHub: https://github.com/fotonmoton

9+ years of experience in web and mobile technologies, adept of maintainable and simple software. Always in search of challenging problems. Strive to learn new stuff and share my knowledge at every opportunity. Proficient in several programming languages on multiple platforms.

Work History

10-2022 - current

Team Lead

BrainRocket, Cyprus/Remote

Designed and maintain payment gateway solution for all teams in the company.
Prepared and outlined architecture for simple card processing service to get PCI DSS license.
Onboard new engineers, prepare cross team guidelines.
Experiment with new technologies and research competitors solutions.

(TypeScript, Nest.js, MySQL, Kafka, GraphQL, AWS, ClickHouse)

08-2023 - 11-2023

Golang course curator

Projector, Kyiv/Online

Taught Go basics to the group of Devs with different knowledge levels.
Presented online lectures, discuss interested topics with students.
Tried to show Go's strengths and weaknesses.
Explore with students and show the evolution of the application from one file to the multiprocess architecture.
Guided students to the completion of all homeworks and course work.

09-2020 - 10-2022

TypeScript Backend Developer

BrainRocket, Cyprus/Remote

Created new features for microservice architecture.
Refactored old codebase parts.
Supported and added dozens payment integrations for different countries.
Was leading effort to migrate legacy service to new architecture.

(TypeScript, Nest.js, MySQL, MongoDB, Nats, GraphQL, TypeORM)

06-2020 - 09-2020

Flutter Developer

Ensocore, Kyiv

Compared and tested cross-platform mobile app technologies as possible solutions.
Developed cross-platform customer facing food delivery mobile application with multi-language support.
Set up communication with legacy third-party API.
Integrated Google Maps and geolocation services.
Added support for online payments.

(Dart, Flutter, Google Maps, RxDart)

01-2020 - 05-2020

React Native Developer

Ensocore, Kyiv

Implemented existing design for mobile application, set up communication with third-party API.

(React Native, TypeScript)

11-2018 - 12-2019

Full Stack React Native Developer

Ensocore, Kyiv

Researched and documented possible solutions for cross-platform mobile app, created integration with legacy customer order system.
Developed multi-container API for React and React Native clients.
Created and published mobile app.
Integrated payment system for local transactions.

(PHP, TypeScript, Slim, MySQL, React, React Native, RabbitMQ, docker-compose)

03-2018 - 11-2018

Full Stack TypeScript Developer

Ensocore, Kyiv

Implemented Node.js API for the unusual table-like mobile quiz game editor. Integrated existing database with new API.

(TypeScript, Node.js, Express, React, MongoDB, docker-compose)

05-2017 - 03-2018

Full Stack PHP Developer

Ensocore, Kyiv

Communicated with client to understand specific system requirements.. Designed and delivered complex dashboard for:
Customer review aggregation system
Managing new employees profiles
Displaying analytics about client provided services

(PHP, Laravel, MySQL, Vagrant, Supervisord)

Education

09-2016 - 12-2018

42 system: Software Engineering

UNIT Factory - Kyiv

09-2014 - 05-2016

Bachelor of Science (unfinished): Software Engineering

National University Of Life And Environmental Science - Kyiv

05-2014 - 06-2014

Audit: Linux Maintenance

Linux Professional Institute - Kyiv

09-2010 - 05-2014

Junior Specialist

Irpin' Economic College - Irpin