Faizan Ullah

Senior Mobile Engineer (Flutter) · Constelle Business Solutions · FinTech & Telco

6+ years building secure, maintainable, production-grade software across Android, iOS, and the web.

Portfolio · LinkedIn · Projects · Pull Requests

I am a Senior Mobile Engineer (Flutter) at Constelle Business Solutions, specializing in scalable Flutter applications for high-volume FinTech and telecom products. My experience spans secure financial workflows, digital self-care, payment integrations, retail/POS systems, and native Android/iOS engineering.

• Secure mobile engineering: Android/iOS native modules, platform channels, secure storage, DexGuard/iXGuard hardening, and protection against reverse engineering and tampering.
• Architecture & quality: Clean Architecture, MVVM/MVI, SOLID, BLoC/GetX/Cubit/Riverpod, TDD, and automated testing.
• Delivery: Release engineering, CI/CD, Fastlane, Docker, and cross-functional collaboration.
• Current direction: AI-assisted development with human review gates, system design, distributed systems, and solution architecture.

Senior Mobile Engineer (Flutter) — Constelle Business Solutions
August 2026 – Present · Islamabad, Pakistan · On-site

• Architecting scalable, high-performance Flutter applications for high-volume fintech and telecom ecosystems.
• Securing Android/iOS mobile builds with DexGuard and iXGuard to mitigate reverse engineering and tampering risks.
• Using AI-assisted tools in engineering workflows and product feature development.
• Improving maintainability and delivery with Clean Architecture, BLoC/GetX, and automated CI/CD.

Featured product: Yas App — Telecom digital self-care, account management, and secure payment experiences built with Flutter.

Senior Mobile Engineer (Flutter) — Veroke
November 2024 – August 2026 · Islamabad, Pakistan · On-site

• Built security-focused fintech mobile solutions for the Saudi market, integrating SADAD and Tarabut payment flows and supporting compliance requirements.
• Applied test-driven development to critical financial transaction workflows.
• Implemented iOS/Android release automation with Fastlane and GitHub Actions, secure code signing, and multi-environment versioning.
• Improved mobile application startup and transaction performance through targeted profiling and architecture optimizations.

Featured product: American Express KSA — Production fintech application supporting secure transactions, enterprise integrations, and localization.

Earlier experience — DTEK.ai
Worked on cross-platform retail, cashier/kiosk, POS, and operational dashboard products, including payment peripheral integrations and realtime functionality.

Enterprise client and employer source code is proprietary; public repositories below contain independently shared projects.

Contribution activity · last 90 days (public data)

_{The stats card updates from GitHub Actions using your authorized token. It aggregates public and accessible private repositories without publishing private names, contents, or individual activity. Commits YTD counts authored commits on accessible default branches since January 1, not every branch or every GitHub contribution. The 90-day public activity trend uses a separate data provider and may be cached. The circular activity tier is computed from documented commit/PR thresholds rather than inferred code quality.}

Activity tier: A+ means at least 200 authored default-branch commits this year and 25 authored PRs; A means 100 commits and 10 PRs; B means 25 commits or 5 PRs; otherwise C. This is an illustrative activity tier, not a GitHub-issued rating or a code-quality assessment.

Explore: Authored pull requests · Commit search · Contributions

For mobile architecture, secure fintech engineering, AI-powered products, and engineering collaboration:

Portfolio · LinkedIn · GitHub

_{Build reliable systems. Keep architecture intentional. Make improvements measurable.}