Вячеслав

Romanov Viacheslav

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Telegram: @Vaksel_l

Backend PHP Developer

Skills

​ Backend development - PHP, Symfony, Laravel, Yii2, AmPHP, Web3PHP, Golang
Data storage and queue development - SQL, Redis, MongoDB, RabbitMQ, Kafka
Code testing - unit and integration testing(PHPUnit).
Api protocols - REST, SOAP, gRPC (Protobuf), WebSockets
DevOps Tools - Docker, Docker-Compose, Gitlab CI, Github actions, npm, Jira,
Confluence, Kibana, nginx, Apache, Makefile, Keycloak, Webpack
Logs storage - ELK, Graylog, Grafana Loki, Kibana
Monitoring - Prometheus, Grafana
Git - GitLab, Github
Frontend development - JavaScript, ES6, React, Vue, jQuery

Experience

​ August 2023 – 2025
​ Gatoscan, Remote - Backend PHP web developer / TeamLead

February 2022 – July 2023
​ Merehead, Remote - Backend PHP web developer / TechLead

September 2020 – 2022
​ Merehead, Remote - Backend PHP web developer

Summary

I have experience in developing highly loaded and distributed systems.
Developed online stores, bots, parsers, microservices that integrated with existing systems.
Developed an order book and trading on a centralized cryptocurrency exchange (spot, margin).
I was involved in improving and supporting the web3 cryptocurrency exchange from the backend
side.
Have experience with integrating various payment services (both backend and frontend).
Also have a long-term supported product with some maintenance few times at year and
improvements at free time.

On previous projects, I partially took on the role of devops, deployed and configured the backend,
frontend,uploaded code from github, gitlab, edited pipelines, and also helped with the launch and
configuration of the
BSC blockchain clone in conjunction with a smart contract developer.

Open to working with new tools and approaches. Able to quickly learn and master new skills,
usually the more complex and interesting the task, the more committed I am to it and enthusiastic
about it. I can also be both a team player and independent if the task is well-formed and I know
what data I need to work with at the input and output.
Currently, I continue to study the backend and am studying Golang with the prospect of switching
to this programming language from php in the future.

Education

​ 2016 - 2020
College of Communication, Kyiv - Junior specialist

2020 - 2022
​ College of Communication, Kyiv - Bachelor

2022 – 2024
​ State University of Information Technologies, Kyiv - Master

Language skills

​ English - upper-intermediate
Can be interviewed in this language
Ukrainian - native
Can be interviewed in this language
Work examples

https://github.com/Vaksel/Voys-Simple-iShop - Internet gallery for a selection of polymer
sand be upgraded to an online store in the future.
https://github.com/Vaksel/VK-Instagram-Bots - Service for automatization comments, likes,
acceptance of subscribers. Also API service for automatization comments on instagram
and tagging.
https://github.com/Vaksel/BinanceVolumeBot - Service for monitoring crypto activity on
Binance by volume on chosen timeframe. Here used async PHP from AmPHP -
WebSockets/Redis/Async functions. Also for treatment used laravel queues. For keep
alive workers used Supervisord.
https://github.com/Vaksel/GridBot - Service for autotrading by grid strategies -
arithmetic/geometry on 5 exchanges (right now realised on Kucoin and partly Binance).
Here used async PHP from AmPHP - WebSockets/Redis/Async functions. Also for
treatment used laravel queues. For keep alive workers used Supervisord.

And other examples that are protected from dissemination by the policy of the company of
the employer and the client.
They are related to the development of cryptocurrency exchanges, cryptoprocessings,
trading bots on such exchanges as Bybit, Binance, Kucoin, Kraken