Sergey Filin - Backend Developer

Q: Where is Sergey based?

Sergey is based in Aktobe, Kazakhstan and prefers 100% remote projects.

Q: What languages does Sergey speak?

Sergey speaks the following languages: Russian (Native), Kazakh (Advanced), English (Intermediate) .

Q: How many years of experience does Sergey have?

Sergey has at least 8 years of experience. During this time, Sergey has worked in at least 3 different roles and for 6 different companies . The average length of individual experience is 1 year and 3 months . Note that Sergey may not have shared all experience and actually has more experience.

Q: What is Sergey's latest experience?

Sergey's most recent position is Backend Developer at Nexus .

Q: What companies has Sergey worked for in recent years?

In recent years, Sergey has worked for Nexus and Stark Games .

Q: Which industries is Sergey most experienced in?

Sergey is most experienced in industries like Information Technology (IT) , Advertising , Media, and Entertainment and Publishing . Sergey also has some experience in Real Estate .

Q: Which business areas is Sergey most experienced in?

Sergey is most experienced in business areas like Information Technology (IT) , Product Development , and Business Intelligence .

Q: Which industries has Sergey worked in recently?

Sergey has recently worked in industries like Information Technology (IT) , Media and Entertainment and Publishing .

Q: Which business areas has Sergey worked in recently?

Sergey has recently worked in business areas like Information Technology (IT) and Product Development .

Recommended expert

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

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (4 years), Advertising (2.5 years), and Media and Entertainment (1 year).

Information Technology

Advertising

Media and Entertainment

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (7.5 years), Product Development (5.5 years), and Business Intelligence (2 years).

Information Technology

Product Development

Business Intelligence

Skills

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

Languages

Russian

Native

Kazakh

Advanced

English

Intermediate

Profile

Created

July 2024

Last Update

July 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Sergey based?

Sergey is based in Aktobe, Kazakhstan and prefers 100% remote projects.

What languages does Sergey speak?

Sergey speaks the following languages: Russian (Native), Kazakh (Advanced), English (Intermediate).

How many years of experience does Sergey have?

Sergey has at least 8 years of experience. During this time, Sergey has worked in at least 3 different roles and for 6 different companies. The average length of individual experience is 1 year and 3 months. Note that Sergey may not have shared all experience and actually has more experience.

What roles would Sergey be best suited for?

Based on recent experience, Sergey would be well-suited for roles such as: Backend Developer, Backend Developer/DBA, Full Stack Developer.

What is Sergey's latest experience?

Sergey's most recent position is Backend Developer at Nexus.

What companies has Sergey worked for in recent years?

In recent years, Sergey has worked for Nexus and Stark Games.

Which industries is Sergey most experienced in?

Sergey is most experienced in industries like Information Technology (IT), Advertising, Media, and Entertainment and Publishing. Sergey also has some experience in Real Estate.

Which business areas is Sergey most experienced in?

Sergey is most experienced in business areas like Information Technology (IT), Product Development, and Business Intelligence.

Which industries has Sergey worked in recently?

Sergey has recently worked in industries like Information Technology (IT), Media and Entertainment and Publishing.

Which business areas has Sergey worked in recently?

Sergey has recently worked in business areas like Information Technology (IT) and Product Development.

What is the availability of Sergey?

The availability of Sergey needs to be confirmed.

What is the rate of Sergey?

Sergey's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.