Open to Opportunities
Hi, I'm Sakhawat Hossain!

Senior Mobile Engineer

7 years architecting and shipping production-grade mobile systems — Android, Flutter, and cross-platform — for platforms serving 1.2M+ daily users across fintech, telecom, and edtech.

Global Expertise

Let me introduce the Engineer

Sakhawat Hossain - Senior Android Engineer & Lead Mobile App Developer

Senior Mobile Engineer with 7 years of end-to-end ownership across Android, Flutter, and full-stack mobile platforms. I architect systems that scale — from greenfield MVPs to complex platform migrations — having shipped products serving 1.2M+ daily active users at a 99.99% crash-free rate across fintech, telecom, and edtech verticals.

7+
Years of experience
20+
Completed projects
99%
Crash-free users

Profile

  • Fullname: Sakhawat Hossain
  • Birth Date: July 1st, 1997
  • Current Position: Senior Software Engineer at Cefalo
  • Website: https://shakiz.github.io/
  • Email: shakil.py@gmail.com

Skills

  • 90%
    Android
  • 80%
    Java
  • 90%
    Kotlin
  • 85%
    Flutter
  • 85%
    Scrum
  • 85%
    Git
  • 80%
    Agile
  • 80%
    CI/CD
  • 90%
    Clean Architecture
Experience

Lead Mobile App Developer Credentials

Work Experience

Senior Software Engineer

October 2023 - Present

Cefalo

Leading mobile engineering for Before Pay — Australia's leading pay-on-demand fintech platform — and CarEye Detect, a real-time vehicle damage assessment product built for Wenn ASA's insurance review pipeline.

Key Responsibilities:

  • Designed and executed a native-to-Flutter migration strategy across iOS and Android, delivering a 40% increase in feature velocity and 95% code reuse — adopted as the team's long-term platform direction.
  • Authored cross-platform RFCs evaluating Flutter vs. Kotlin Multiplatform, informing an architecture decision that standardised shared business logic across platforms.
  • Built production Flutter-Native Method Channel bridges for legacy modules, enabling safe incremental migration without disrupting live user flows.
  • Designed and owned CI/CD pipelines that cut build-to-deploy time by 50%, eliminating manual release steps and accelerating the delivery cadence.
  • Took full end-to-end ownership of CarEye Detect — from requirements analysis and UI/UX design through to production launch — delivering a computer vision-powered damage detection experience on schedule.

Software Engineer - Level 2

Jan 2023 - October 2023

Software Engineer

April 2022 - December 2022

Brain Station 23

Led core Android feature engineering for My Banglalink — one of Bangladesh's most-downloaded telecom super-apps with millions of active subscribers — owning high-traffic product journeys from design to release.

Key Responsibilities:

  • Owned and shipped the Loyalty Management System for Banglalink's subscriber base — a high-traffic rewards engine processing recharge events and engagement milestones at scale.
  • Delivered end-to-end product journeys for Recharge, Product Purchase, and Cashback, handling complex payment flows and concurrency edge cases in a live production environment.
  • Led sprint planning and story grooming with product owners — decomposing business requirements into well-scoped, time-boxed engineering deliverables.
  • Acted as the technical liaison between client stakeholders and the engineering team, surfacing constraints early and aligning release timelines with business commitments.
  • Conducted structured code reviews and knowledge-transfer sessions that measurably raised team-wide code quality and reduced review turnaround time.

Software Engineer

Feb 2021 - April 2022

Jr. Mobile Application Developer

June 2019 - Jan 2021

Save the Children in Bangladesh

Delivered national and international digital products for one of the world's largest NGOs, collaborating with field practitioners, government stakeholders, and international clients across Bangladesh's education and social development programmes.

Key Responsibilities:

  • Architected and delivered three Learning Management Systems (LMS) and one Management Information System (MIS), each with modular features — quiz, assessment, dashboard, and quality benchmark engines.
  • Engineered a configurable, offline-capable quality benchmark survey module that synced structured field data to remote servers, enabling government-grade programme reporting.
  • Embedded with field teams during on-site visits to validate requirements against real user workflows, bridging the gap between stakeholder intent and ground-level implementation.
  • Handled on-call incident response for distributed deployments in low-connectivity field environments, diagnosing and resolving production issues without remote debug access.

Jr. Android Developer

Oct 2018 - May 2021

ShadoWhite Animators Ltd.

Built and shipped two core ERP modules — Sales and Cash Collection — for an internal business management system used by Magnum, a leading Bangladeshi FMCG company, to track and reconcile its nationwide sales operations in real time.

Education

Masters in Applied Statistics and Data Science

April 2022 - May 2023

Jahangirnagar University

  • Grounded in the mathematical and probabilistic foundations of machine learning, statistical inference, and data-driven decision-making.
  • Core coursework: Statistical Methods, Data Science with Python, Sampling Methodology, Big Data Systems, and Data Mining — directly applied to mobile product analytics and performance telemetry in engineering roles.
  • Developed quantitative thinking that informs architectural trade-offs and data-informed feature prioritisation.

BSc. in Software Engineering

Auguust 2015 - September 2019

Daffodil International University

Completed a four-year software engineering programme covering algorithms, data structures, system design, software architecture, and engineering fundamentals — while simultaneously working on professional software projects from the second year onward.

Major achievements:

  • 1st place — 2017 SWE Project Showcase, recognised for best technical implementation across the graduating cohort.
  • Graduated ranked 3rd in the batch, maintaining top academic standing while building real-world Android applications concurrently.
Portfolio

Check Out Some of My Works

A selection of production-grade mobile and web products shipped across fintech, telecom, edtech, and healthcare — spanning Native Android, Flutter, and full-stack platforms. Each project represents real-world architecture decisions, live users, and measurable outcomes.

End-to-End Solutions

From Requirements to Product

I help founders and businesses across the USA, Europe, and Asia-Pacific build complete digital products — handling everything from requirements analysis and architecture design to development, testing, and launch. One engineer. Full ownership.

Discovery & Planning

Requirements analysis, scope definition, and tech stack selection. I translate business goals into a clear, buildable roadmap — so you know exactly what will be built and why before a single line of code is written.

Mobile & Web Engineering

Full-stack development across Native Android, Flutter, and Modern Web. I build production-grade apps backed by scalable APIs and clean architecture — from first commit to a product your users love.

Launch & Scale

App store submission, CI/CD setup, cloud deployment, and post-launch support. I own the complete delivery pipeline so your product reaches users reliably and continues to scale with demand.

Ready to build something? Let's connect directly.

Blog

Latest Thoughts

Technical journals and deep dives into Senior Android Engineering, Flutter internals, and the evolving ecosystem of mobile software architecture.

Contact

Get In Touch

Have a product idea, an engineering challenge, or an opportunity worth discussing? Reach out directly — I respond to every serious inquiry.

Email Me At

shakil.py@gmail.com

Contact with me at Mobile/What's App At

Phone/Mobile: (+880) 1688499299