Sergey Filin - Backend Developer

Aktobe, Kazakhstan

Experience

Mar 2022 - Aug 2023

1 year 6 months

Tbilisi, Georgia

Backend Developer

Nexus

Prototyped client applications using PHP and Vue.js
Integrated the AWS technology stack across all application layers
Actively used TypeScript to develop features using AWS Lambda for data storage, authorization, and processing

Jul 2020 - Jul 2021

1 year 1 month

Minsk, Belarus

Backend Developer

Stark Games

Developed the backend part of the Magic Seasons game series, optimizing and refactoring the codebase and integrating parts of the Symfony framework
Worked closely with MySQL and MongoDB databases and developed a distributed transaction system spanning different databases
Integrated new features via social networking APIs

May 2018 - Jun 2020

2 years 2 months

Saint Petersburg, Russian Federation

Backend Developer/DBA

Trending.bid

Contributed to a real-time ad bidding platform (SSP and DSP) with a PHP-based advertisers’ self-service website, advanced reporting tools, and payment gateways integrations
Developed the bidding cluster in Java and managed distributed databases in MySQL and ClickHouse (400 TiB+ of data)
Developed website features, personal accounts, promo codes, and payment systems integrations
Responsible for the user interface of statistics and data display from distributed sources using complex SQL queries
Improved database performance by creating aggregation tables and data normalization
Assisted other campaign projects with databases and payment APIs

Nov 2015 - Apr 2018

2 years 6 months

Saint Petersburg, Russian Federation

Full Stack Developer

SiteMaket

Developed CRM systems and multi-tenant eCommerce systems
Designed databases
Developed payment systems, mailing lists, and integrated external API services for payments, maps, weather, and delivery
Integrated 3D tours on customer sites

Aug 2015 - Oct 2015

3 months

Saint Petersburg, Russian Federation

Full Stack Developer

Ra-interpress

Worked on server-side and client-side agency websites (ad aggregators, real estate catalogs, landings) using Yii 1 and Bootstrap
Refactored and migrated projects to Yii 2
Integrated API services for maps, weather, and other external data

Apr 2015 - Jul 2015

4 months

Moscow, Russian Federation

Full Stack Developer

SIP projects

Supported and developed server-side and client-side websites and CRM systems of various complexity using Symfony and Bootstrap
Parsed sites using Python and PHP Gearman

Skills

Php
Symfony
Laravel
Yii
Mysql
Clickhouse
Mongodb
Javascript
Vue.js
Rabbitmq
Git
Nginx
Linux

Languages

Russian

Native

Kazakh

Advanced

English

Intermediate

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Similar Freelancers

Discover other experts with similar qualifications and experience

Serge Kalinin

Experience

Backend Developer

Nexus

Backend Developer

Stark Games

Backend Developer/DBA

Trending.bid

Full Stack Developer

SiteMaket

Full Stack Developer

Ra-interpress

Full Stack Developer

SIP projects

Skills

Languages

Similar Freelancers

MLOps (machine learning operations)

Lead Full Stack Software Engineer

.NET Developer

Senior Software Engineer

Senior Full-Stack Developer

Head of Technical Overall Integration NSC / Hadoop Cloud Development

CTO

Cloud Architect & DevOps, Head of Architecture

IT Consultant SAP Commerce Cloud B2C / B2B Shops

Full-Stack Software Engineer / Consultant for Digitalization

Embedded Fullstack Developer

Lead Software Engineer

Software Engineer

Web Software Engineer

CTO/CISO

Senior Software Developer / Tech Lead

Senior Software Architect

Senior Software Engineer

Cloud-Architect, Senior Solution Architect, Senior Software-Engineer

Freelance Lead DevOps Engineer

Senior Frontend Developer

Tech Lead: API Experience Platform

Principal Consultant

Full Stack Developer

Freelance Team Lead Backend Applications E-Commerce

Senior IT Consultant

Fractional CTO (Principal Engineer / Technical Architect)

Product Owner AI Learning Platform

Lead Developer

Technical Lead