Product discovery
Map the real user workflow, business outcome, constraints, and riskiest assumptions before locking in a technical solution.
Mobile product engineering
Mobile apps built around real customer workflows.
I take iOS and Android products from discovery and architecture through React Native or native implementation, backend integration, store release, observability, and real-world iteration.
- 10 years
- shipping mobile products
- iOS + Android
- one accountable delivery path
- RN + native
- chosen around product constraints
Product discoveryReact NativeCloud APIs
Discovery → architecture → native capabilities → APIs → stores → production learning
Mobile evidence
Products carried beyond the prototype.
Digital health, community, media, and field-operation products—with the implementation and production decisions made explicit.
Appiell Inc.
Appiell — AI Digital Health Platform
Embedded with a digital-health team to turn AI-assisted patient, practitioner, and research workflows into a production mobile experience.
AI-assisted health workflows across three stakeholder groups
Read case study
Cloudly
oCare — Virtual Healthcare Platform & Mobile App
Turned patient and doctor workflows into a releasable virtual-care product backed by safer environments, adaptable forms, and controlled rollouts.
Patient and doctor workflows with safer release controls
Read case study
Jhenidah Ex-Cadets Association (JEXCA)
JEXCA — Alumni Platform & Mobile App
Led the mobile deployment of a verified community platform, carrying complex member, communication, and operational workflows into production.
Verified community application for a public 2,500+ member base
Read case study
Jank Media LLC
DaMixhub — Mixtapes & Music
Android music platform for discovering, streaming, downloading, and organizing mixtapes, singles, radio shows, and playlists.
1M+ downloads reported by the public Google Play listing
Read case studyEnd-to-end ownership
What I own beyond the screen.
A mobile product succeeds or fails across the whole delivery system, not only inside its UI layer.
Mobile architecture
Shape navigation, state, data, offline behavior, platform boundaries, and release strategy around how the product must operate.
Native integrations
Handle permissions, deep links, push notifications, WebViews, device APIs, native modules, signing, and platform-specific behavior.
Backend and cloud
Own API contracts, authentication, data synchronization, Firebase or AWS integrations, and the services behind the application.
Release engineering
Build CI/CD, testing tracks, feature controls, App Store and Google Play submissions, and safer production rollouts.
Production iteration
Use crash reporting, structured signals, customer feedback, and real usage to improve the product after launch.
Delivery path
From customer problem to app-store production.
Discover
Understand the users, workflow, business outcome, constraints, and evidence of success.
Shape
Choose the architecture, native boundaries, backend contracts, and release plan around the actual risk.
Build
Implement the riskiest workflow early, then grow the product in reviewable production-shaped increments.
Release
Establish testing, signing, CI/CD, staged rollout, store submission, and operational visibility.
Learn
Use customer feedback, crashes, performance, and real behavior to guide the next responsible iteration.
Technical depth
The mobile delivery stack.
Cross-platform product
- React Native
- TypeScript
- Expo
- React Navigation
- Reanimated
- Redux
Native and device
- Android · Kotlin · Java
- iOS and Android native modules
- Push notifications and deep links
- Permissions and device APIs
- WebView and native networking
- Store signing and release tracks
Data and integration
- Firebase (RTDB, Firestore, Auth)
- REST and GraphQL APIs
- Authentication and session flows
- SQLite and Room
- Offline-first synchronization
- Node.js and NestJS services
Production delivery
- AWS (Lambda, S3, SES, SNS)
- Docker
- CI/CD (GitHub Actions, App Center, EAS)
- App Store and Google Play delivery
- Crash reporting and observability
- Feature flags and controlled rollouts
Client feedback
Trusted when the requirements are still taking shape.
5.0 ★Upwork client feedback
“I am extremely impressed with your work and professionalism. You are clearly very skilled and knowledgeable in your field, and it was a pleasure working with someone who is both smart and friendly. I am very happy with the outcome of our project and I will definitely hire you again for future work.”
ProfessionalCommitted to QualityCollaborative
5.0 ★Upwork client feedback
“Completely satisfied with the overall result. Skilled and structured way of working, very fast feedback, reliable communication, and full recommendation.”
Detail OrientedClear CommunicatorSolution Oriented
5.0 ★Upwork client feedback
“He understood the task pretty quickly, completed it ahead of time, and delivered exactly what I needed. I highly appreciated his availability and communication throughout the work.”
Clear CommunicatorReliableCommitted to Quality
5.0 ★Upwork client feedback
“Another outstanding job. Brilliant work, excellent English, clear understanding of requirements, polite communication, and great reliability. We have already forwarded him another job.”
Committed to QualityClear CommunicatorReliable
5.0 ★Upwork client feedback
“It was a pleasure to work with Ashik. He finished the project very quickly and immediately responded to and solved any additional requests.”
CollaborativeSolution Oriented
5.0 ★Upwork client feedback
“I have employed many freelancers since 2008, and Ashik is in the top group. He is polite, patient, professional, and focused on delivering the product—not just getting the work finished.”
ProfessionalClear Communicator
5.0 ★Upwork client feedback
“Good developer. He accomplished the task assigned to him. Recommended!”
Accountable for Outcomes
5.0 ★Upwork client feedback
“MD. Ashik solved my problems efficiently and with excellent quality!”
Solution OrientedCommitted to Quality
5.0 ★Upwork client feedback
“The delivery was on time and the quality of the work was good.”
ReliableCommitted to Quality
5.0 ★Upwork client feedback
“MD. Ashik speaks fluently and has a good command of native Android.”
Clear Communicator
5.0 ★Upwork client feedback
“Ash is not just a great programmer but an amazing guy. He is patient, nothing is ever a problem, and he is always available. I cannot recommend him highly enough.”
ReliableCollaborative
Before we start
Mobile engagement questions.
Can you take a mobile product from discovery through release?+
Yes. I can work with stakeholders to clarify the workflow and scope, shape the architecture, implement the application and integrations, establish release pipelines, and stay involved through production feedback and iteration.
When should we use React Native instead of fully native development?+
React Native is a strong fit when shared product logic and delivery speed matter across iOS and Android. I still evaluate performance, platform APIs, background behavior, device integrations, and team constraints before recommending it.
Can you improve or rescue an existing mobile application?+
Yes. I can audit architecture, performance, crash patterns, state and navigation complexity, API boundaries, native build problems, and release risk, then turn the findings into an incremental recovery plan.
Do you handle backend and cloud work as well?+
Yes. My mobile work regularly includes API contracts, authentication, databases, Firebase, Node.js or NestJS services, AWS integrations, CI/CD, and production observability.
Can you manage App Store and Google Play delivery?+
Yes. I work with certificates, signing, build variants, testing tracks, App Center or EAS pipelines, store submissions, staged releases, and post-release monitoring.
Can you collaborate across US, European, and Asian time zones?+
Yes. I have worked with teams across all three regions and can establish an overlap window, written decision trail, and delivery rhythm suited to a distributed team.
Have a mobile product to ship?
Bring the workflow, constraints, and outcome—not a perfect specification.
We can clarify the mobile architecture, backend boundaries, native risks, release path, and smallest responsible production increment.