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Ulmasbek RakhmatullaevUR
Open to opportunities

Ulmasbek Rakhmatullaev

@ulmasbekrakhmatullae

Senior Flutter developer building secure fintech authentication SDKs and scalable cross-platform apps.

Uzbekistan
Message

What I'm looking for

I’m looking for a role where I can lead Flutter engineering, architect secure auth/SDK systems, and ship production apps across mobile and web—ideally in fintech or enterprise—while collaborating in agile teams.

I’m a Senior Flutter Developer with 5+ years of experience building production-grade cross-platform applications and developer SDKs. I architected a multi-bank authentication SDK now serving 20,000+ MAU across iOS, Android, and Web.

At Payfintech, I built and owned the Flutter engineering layer of the Pully authentication SDK integrated by 4 major Uzbek banks. I implemented Passkeys, MyID biometric verification, and secure token-based auth flows, reducing user login friction by 40%, while designing for rapid onboarding of new banking partners.

I’ve also led delivery as a team of 8 engineers, shipped 13 production apps, and improved reliability to 99.5% crash-free sessions using Firebase Crashlytics and Sentry. From AI consumer apps with $8,000 MRR impact to hardware-integrated warehouse apps via Platform Channels, I focus on robust architecture, fast iteration, and clean engineering practices.

Experience

Work history, roles, and key accomplishments

PA
Current

Senior Flutter Developer

Payfintech

Jan 2024 - Present (2 years 5 months)

Built and owned the Flutter engineering layer of Pully, a cross-platform authentication SDK integrated by 4 major Uzbek banks, serving 20K+ MAU across iOS, Android, and Web. Implemented Passkeys and MyID biometric verification and delivered token-based auth flows, reducing user login friction by 40%.

SU

Senior Flutter Developer

Suponoholdings

Dec 2024 - Aug 2025 (8 months)

Worked as the primary Flutter engineer on multiple AI-powered consumer apps, delivering cross-platform AI chat and image/video generation experiences. Drove revenue impact with a flagship app reaching $8,000 MRR and contributed to 3+ apps across the portfolio.

ER

Senior Flutter Developer

Eriell

May 2023 - Jan 2024 (8 months)

Built Android-based warehouse management apps and integrated barcode scanners and thermal printers via Platform Channels for manufacturing facilities. Implemented CI/CD with Fastlane and GitLab CI to cut release cycle time by over 60%, and improved production reliability with Firebase Crashlytics and Sentry (99.5% crash-free sessions).

VE

Middle Flutter Developer

Vention

Jan 2022 - Apr 2023 (1 year 3 months)

Delivered internal tooling for a global workforce by building an employee platform with Single Sign-On (SSO) integrated across the product ecosystem. Participated in agile ceremonies and maintained a strong code-quality culture by averaging 2 pull request reviews per day.

RI

Flutter Developer

4ride.pl

Sep 2021 - Jan 2022 (4 months)

Solely designed and built a Flutter sports equipment marketplace app end-to-end, including product listings, user authentication, and purchase flows. Collaborated directly with the client to translate requirements into technical implementation and deliver on schedule.

UG

Flutter Developer & Team Lead

UIC Group

May 2020 - Jan 2022 (1 year 8 months)

Led a team of 8 Flutter developers, mentored 5+ junior engineers, and established Flutter best practices adopted as company-wide standards. Shipped 13 production applications and increased delivery capacity by 40% by optimizing workflows, while integrating Android native modules (Java/Kotlin) via Platform Channels.

Education

Degrees, certifications, and relevant coursework

IU

Inha University

Bachelor of Science, Computer Science

2016 - 2020

Grade: 3.60 / 4.00

Earned a B.Sc. in Computer Science from Inha University (Tashkent). Graduated with a GPA of 3.60/4.00.

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