Senior Android Engineer

Building Scalable Android Solutions

10+ years of experience building production-ready Android applications for startups and enterprises. Kotlin, Jetpack Compose, and modern architecture.

10+
Years Experience
50+
Projects Delivered
20+
Happy Clients
M+
Users Impacted
KKotlin
Java
Jetpack Compose
🤖Android SDK
🔥Firebase
REST API
Google Maps SDK
SQLite
Coroutines
Git
KKotlin
Java
Jetpack Compose
🤖Android SDK
🔥Firebase
REST API
Google Maps SDK
SQLite
Coroutines
Git
Sajad Profile
Available for Projects
10+
Years
50+
Projects
20+
Clients
About Me

Senior Android Developer with a Passion for Quality

With over a decade of experience, I help businesses turn ideas into powerful Android applications. I focus on clean architecture, performance, and great user experience — delivered on time, every time.

Kotlin95%
Java90%
Jetpack Compose92%
REST API95%
Firebase88%
Google Maps SDK85%
What I Do

Android Solutions That Drive Business

I build powerful, scalable and user-friendly Android applications for startups and enterprises — from concept to millions of users.

Explore Services
📱
01

Native Android Development

High-performance production Android applications built with Kotlin, Java and modern Android SDK.

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🎨
02

Jetpack Compose Development

Modern, declarative and responsive UIs using Jetpack Compose — fast, accessible and themeable.

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🏢
03

Enterprise Mobile Solutions

End-to-end enterprise Android apps: CRM, warehousing, customer clubs, and custom business systems.

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☁️
04

Backend Integration

REST APIs, Firebase, real-time Socket.io connections, and scalable cloud integrations for mobile.

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🧭
05

Consulting & Architecture

Architecture audits, tech strategy, team enablement and hands-on mobile solution design.

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🛠️
06

Maintenance & Support

Ongoing Android app maintenance, security updates, performance tuning and new feature delivery.

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Featured Projects

Some Recent Work

A curated selection of production-grade Android applications across diverse industries.

Begardesh
Health & Urban Tourism

Begardesh

Challenge
Build a gamified health and urban exploration app that motivates users to walk daily by turning steps into real rewards.
Solution
Native Android app with real-time step tracking, calorie and distance monitoring, coin reward engine, daily challenges, lucky wheel, club membership, and card collection system.
Outcome
4.3★ rating with 7,000+ reviews; millions of coins earned daily by active users across Iran.
KotlinAndroid SDKGoogle Maps SDKFirebaseREST APIStep Sensor
Technical Expertise

A Toolbox Refined Over 10+ Years

A deep stack across native Android development, architecture patterns, backend integrations and enterprise tooling.

Android
  • Kotlin76%
  • Java74%
  • Jetpack Compose85%
  • Android SDK81%
  • Coroutines80%
  • Flow74%
Architecture
  • MVVM74%
  • Clean Architecture88%
  • Dependency Injection90%
  • Repository80%
  • MVI73%
Backend
  • REST API78%
  • Firebase78%
  • Socket Programming88%
  • gRPC74%
  • Cloud Messaging85%
Enterprise
  • Google Maps81%
  • Payments78%
  • Barcode77%
  • QR72%
  • PDF73%
  • SQLite76%
Work Process

A Proven Process for Predictable Delivery

Seven clear, collaborative steps that turn ideas into scalable, production-grade Android applications.

01
🔎

Discovery

Understand product, users and constraints.

02
🧭

Planning

Define scope, deliverables and success metrics.

03
🏗️

Architecture

Design scalable, maintainable system architecture.

04
🧪

Development

Build with Kotlin, Compose and clean patterns.

05
📦

Testing

Automated, manual and device-farm QA coverage.

06
✈️

Deployment

CI/CD pipeline and Play Store rollout strategy.

07
🛡️

Support

Monitor, iterate and grow post-launch together.

Testimonials

What Clients Say

"

Sajjad delivered our Android app ahead of schedule with a quality level I have rarely seen. Architecture, performance and UX — all top-tier.

AR
Amir Rezaei
CTO · Begardesh
★★★★★
Resume

Career & Education Timeline

A concise look at experience, education and the teams I've had the pleasure to build with.

Download PDF Resume
Mar 2018 — Present
Experience
Android Developer
Karamad System (Dade Pardazi Karamad System Pooyan) · Remote
  • Developed and maintained the Karamad System Android app — a comprehensive ERP-based distribution and sales software (karamadsystem.com).
  • Built field-sales ordering workflows with offline support and Google Maps SDK integration.
Mar 2024 — Sep 2024
Experience
Android Developer
Gam-haye Talaei Novavaran Ariana · Remote
  • Developed the Begardesh Android app — a gamified health and urban tourism platform with step tracking and coin rewards.
  • Published on Cafe Bazaar: cafebazaar.ir/app/com.begardesh.superapp.begardesh
Mar 2017 — Mar 2023
Experience
Android Developer
Nikan Software Group · Shiraz, Iran
  • Developed Android applications for accounting and enterprise management projects.
  • Built visitor management and warehouse inventory (انبارگردانی) applications.
Mar 2019 — Present
Experience
Android Developer
Sadr Tahvieh Pars · Remote
  • Ongoing Android development for HVAC-industry business applications.
Mar 2019 — Sep 2024
Experience
Android Developer
Hekmat va Maharat Technical Institute · Shiraz, Iran
  • Built the Hekmat Technical Calculations app for engineering students and professionals (khanehtasisat.ir).
  • Delivered free educational content, professional calculators, and appliance error-code lookup tools.
Oct 2016 — Jun 2017
Experience
Sales Representative
Iran Nara · Iran
  • Represented the company in client-facing sales operations.
2015 — 2018
Education
B.Sc. in Computer Engineering — Software
Islamic Azad University, Estahban Branch · Iran
  • GPA: 17/20.
Let's Talk

Have a Project in Mind?

Let's build something amazing together.