Andrei Chulkov - Senior Android Developer

Q: Where is Andrei based?

Andrei is based in Bilbao, Spain and prefers 100% remote projects.

Q: What languages does Andrei speak?

Andrei speaks the following languages: English (Advanced), Russian (Advanced) .

Q: How many years of experience does Andrei have?

Andrei has at least 10 years of experience. During this time, Andrei has worked in at least 4 different roles and for 6 different companies . The average length of individual experience is 2 years and 9 months . Note that Andrei may not have shared all experience and actually has more experience.

Q: What is Andrei's latest experience?

Andrei's most recent position is Senior Android Developer at Gefidze .

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

In recent years, Andrei has worked for Gefidze , Properstar , Appcraft , Grokhotov Studio (Positron-IT) , and Nexign .

Q: Which industries is Andrei most experienced in?

Andrei is most experienced in industries like Real Estate , Food and Beverage , and Telecommunication . Andrei also has some experience in Information Technology (IT) .

Q: Which business areas is Andrei most experienced in?

Andrei is most experienced in business areas like Information Technology (IT) , Product Development , and Customer Service .

Q: Which industries has Andrei worked in recently?

Andrei has recently worked in industries like Real Estate , Telecommunication , and Information Technology (IT) .

Q: Which business areas has Andrei worked in recently?

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

Recommended expert

Bilbao, Spain

Experience

Mar 2024 - Jun 2024

4 months

Senior Android Developer

Gefidze

Developed Android platform and common module Kotlin parts of a Kotlin Multiplatform project under strict deadlines
Participated in code reviews; submitted and reviewed pull requests
Developed all application and common module features
Worked with CameraX and custom image analyzer using ML Kit; implemented UI in Jetpack Compose
Implemented common module integration with Firebase features (storage, auth, Firestore); configured project access rules and settings
Worked closely with iOS team to solve platform-specific issues and discuss possible implementations

Apr 2022 - Present

3 years 11 months

Senior Android Developer

Properstar

Projects: Properstar (100 real estate portals in +60 countries)
Contributed to full application development lifecycle from planning, requirement gathering, development, testing, and launching on Google Play Store
Researched app architectures, collected feedback to improve user friendliness
Integrated media and maps; worked with Google Maps API to implement clustering features, custom markers, and search by user-drawn polygon
Collaborated cross-functionally with product design, marketing, analytics, and development teams to ensure solid end-to-end strategy and execution
Debugged and troubleshooted complex issues; implemented complex animations including screen transitions with MotionLayout
Created custom views including user-friendly phone inputs
Implemented new features: property valuation flow with multi-step wizard, search display for new developments, visually appealing sell/valuation landing screens (server-driven UI using Contentful)
Worked with CI/CD tools: Bitrise, TeamCity, Jenkins, Azure; version control systems: GitHub, GitLab, Azure Repos
Boosted app rating from 3 to 4.6 by initiating in-app review flow and contributed to user base growth
Implemented various new features and fixed backlog of bugs

Oct 2021 - Apr 2022

7 months

Android Developer

Appcraft

Worked on all phases of projects including design, development, testing, and deployment
Tested applications on multiple Android targets and debugged issues
Participated in code reviews in a team environment
Built a visually appealing app for listening to audio stories while visiting bars (mobile theater)
Worked extensively with ExoPlayer; created custom player layouts with background playback and state restoration
Developed an app utilizing three map layers (Google, OSM, Yandex) to display vehicles and their stats
Successfully delivered a range of robust and user-friendly applications for clients

May 2021 - Oct 2021

6 months

Saint Petersburg, Russian Federation

Android Developer

Grokhotov Studio (Positron-IT)

Worked on all project phases for a large-scale (~300k MAU first year) e-book P2P library app
Supported older apps and refactored legacy code
Collaborated cross-functionally with product design, project managers, analytics, and more to ensure solid end-to-end strategy and execution
Contributed to the design of application architecture and software components
Troubleshooted, debugged, and fixed issues in production and test environments
Contributed to innovation, data, design, critique, and continual improvement of the app
Wrote well-engineered, robust code with very low crash rate (min API 19)

Nov 2018 - May 2021

2 years 7 months

Saint Petersburg, Russian Federation

Service Engineer/Junior Android Developer

Nexign

Provided internal IT services and infrastructure support to a telecom billing software development company
Attended internal Java programming courses
Created a QR scanning app
Observed modern development practices including CI/CD and DevOps
Applied problem-solving skills to identify and resolve hard-to-find source issues

Oct 2015 - Nov 2018

3 years 2 months

Saint Petersburg, Russian Federation

On-site

Technical Support Specialist

Ventra HR Holding

Worked as on-site staff for helpdesk at Heineken Brewery Corporation
Collaborated with internal teams internationally
Supported an iOS app used by company trade representatives
Participated in identifying and resolving P1 (critical) incidents; escalated issues as needed
Gained and applied ITSM knowledge

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 Real Estate (4 years), Food and Beverage (3 years), Telecommunication (2.5 years), and Information Technology (1 year).

Real Estate

Food and Beverage

Telecommunication

Information Technology

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 (10.5 years), Product Development (7.5 years), and Customer Service (3 years).

Information Technology

Product Development

Customer Service

Summary

A forward-thinking engineer with 6+ years commercial experience and 10+ years IT industry experience. Passionate about developing high-quality, user-friendly apps. Able to lead in making decisions and assume overall responsibility of projects. Excels at applying analytical skills to encourage strategic planning while striving for improvement. Seeking to bring professional background and successes into a position where I can leverage my experience and continue to grow professionally.

Skills

// Professional

App Development (6 Years)
Technical Support (9 Years)
Agile Methodologies
App Architectures
Media/maps Integration
Mobile Application Development
Debugging/troubleshooting
App Publishing

// Technical

Ci/cd Tools: Bitrise, Teamcity, Jenkins, Azure
Version Control Systems: Github, Gitlab, Azure Repos
Jetpack Compose/xml
Android Studio
Kotlin Multiplatform
Rxjava/kotlin Flows/coroutines
Gradle
Rest Apis, Firebase
Sqlite
Aac (Android Architecture Components)
Unit Testing
Mvvm/mvi/mvp
Di (Dagger, Koin, Toothpick, Hilt)

Languages

English

Advanced

Russian

Advanced

Profile

Created

August 2024

Last Update

January 2026

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Frequently asked questions

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

Where is Andrei based?

Andrei is based in Bilbao, Spain and prefers 100% remote projects.

What languages does Andrei speak?

Andrei speaks the following languages: English (Advanced), Russian (Advanced).

How many years of experience does Andrei have?

Andrei has at least 10 years of experience. During this time, Andrei has worked in at least 4 different roles and for 6 different companies. The average length of individual experience is 2 years and 9 months. Note that Andrei may not have shared all experience and actually has more experience.

What roles would Andrei be best suited for?

Based on recent experience, Andrei would be well-suited for roles such as: Senior Android Developer, Android Developer, Service Engineer/Junior Android Developer.

What is Andrei's latest experience?

Andrei's most recent position is Senior Android Developer at Gefidze.

What companies has Andrei worked for in recent years?

In recent years, Andrei has worked for Gefidze, Properstar, Appcraft, Grokhotov Studio (Positron-IT), and Nexign.

Which industries is Andrei most experienced in?

Andrei is most experienced in industries like Real Estate, Food and Beverage, and Telecommunication. Andrei also has some experience in Information Technology (IT).

Which business areas is Andrei most experienced in?

Andrei is most experienced in business areas like Information Technology (IT), Product Development, and Customer Service.

Which industries has Andrei worked in recently?

Andrei has recently worked in industries like Real Estate, Telecommunication, and Information Technology (IT).

Which business areas has Andrei worked in recently?

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

What is the availability of Andrei?

Andrei is immediately available for suitable projects.

What is the rate of Andrei?

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