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Sayed Mahmudul Alam

Available to hire

Senior Mobile Engineer (iOS) with 9+ years of experience building and maintaining mobile applications across fintech, telecom, on-demand services, and edtech.

About

Senior Mobile Engineer (iOS) with 9+ years of experience building and maintaining mobile applications across fintech, telecom, on-demand services, and edtech. Worked with international teams across Southeast Asia, delivering products used by millions.

Hands-on expertise in Swift and modern iOS development (SwiftUI, MVVM, Combine, async/await), along with CI/CD, analytics, monitoring, and AI-assisted features. Focused on reliable, scalable, user-centric software with measurable business impact.

  • 9 years' experience
  • Joined July 2026

Industry experience

  • Telecommunications
  • Financial Services
  • Software & Internet
  • Education
  • Media & Entertainment
  • Other

Work experience· 8 roles

Lead iOS Engineer · Optimum Track (Telecom) [Fixed Term Contract]Dec 2025 – Jun 2026 · 7 mos

Collaborated with an iOS/Android mobile squad to deliver an LLM-based chat assistant for telecom field operations, targeting 25% faster troubleshooting resolution. Implemented a modular, scalable offline-first architecture with secure authentication and local persistence. Contributed hands-on across iOS development, built release pipelines, and set up analytics and crash reporting/monitoring tools.

iOS Lead · Xendit (Fintech: Payments & Banking)Apr 2025 – Nov 2025 · 8 mos

Worked on development and maintenance of Nex, a mobile banking super app. Contributed to a mobile banking application supporting payments, savings, and credit-related features. Enhanced fraud detection for credit card applications by integrating an AppSсan system to collect user-consented device metadata for ML-driven prediction and prevention of fraudulent attempts. Improved credit card spending and engagement via product-level installment plans and flexible repayment options. Developed a banking SDK enabling secure user identification and transactions across partner fintech apps.

Lead iOS Engineer · Grab (Super App / Service, Fintech & Consumer Tech)Mar 2024 – Jan 2025 · 11 mos

Led a team of 5 iOS engineers focused on user identity verification using MFA (PIN, biometrics, etc.). Owned end-to-end integration of WhatsApp and Viber as OTP channels, reducing dependency on SMS/voice calls and delivering monthly cost reductions of USD 50K. Prototyped an in-app localization module using ChatGPT API to remove manual localization effort. Integrated tests to reach ~60% code coverage on a core SDK, improving stability and reducing regressions. Shared knowledge through learning sessions and technical documentation; also contributed to reliability and performance improvements in app flows.

Engineering Lead, Mobile iOS · Mindvalley (EdTech / Wellness)May 2022 – Mar 2024 · 1 yr 11 mos
Senior iOS Developer · Mindvalley (EdTech / Wellness)Aug 2019 – Apr 2022 · 2 yrs 9 mos
Software Engineer (iOS) · bdjobs.comApr 2018 – Jul 2019 · 1 yr 4 mos
iOS Developer · BlueschemeFeb 2017 – Mar 2018 · 1 yr 2 mos
Junior Mobile Engineer · InovioJun 2016 – Jan 2017 · 8 mos

Education

B.Sc. in Computer Science and Engineering · North South University2011 – 2015

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