Engineering
Bluetooth Low Energy: GATT, Permissions, and Background Connections in React Native
Scan for peripherals, negotiate MTU, handle iOS background modes, Android scan throttling, and building reliable IoT companion apps with BLE libraries.
Available for new projects
Engineering Digital Excellence at Scale
Full Stack & Mobile Developer | Node.js, React Native, PHP, Laravel | 7+ Years Building Scalable Web & Mobile Apps
Main.tsx
const Developer = {
name: 'John Hambardzumian',
role: 'Senior Full Stack & Mobile Developer',
expertise: ['React.js', 'Next.js', 'React Native', 'Node.js', 'Express.js', 'PHP', 'Laravel', 'MySQL', 'PostgreSQL', 'GraphQL', 'AWS'],
passion: 'Building Scalable Systems'
}
7+
Years Experience
50+
Projects Delivered
20+
Clients
1M+
Lines of Codes
smartphoneReact Native
developer_modeReact
view_quiltNext.js
view_agendaVue
change_historyAngular
waterTailwind CSS
codeHTML
styleCSS
codeTypeScript
codeJavaScript
neurologyPython
filter_vintageDjango
filter_vintageFlask
diamondRuby on Rails
phpPHP
sports_motorsportsGo
handymanRust
kitesurfingKotlin
flightSwift
codeNode.js
lanExpress
hubREST APIs
hubGraphQL
alt_routegRPC
storagePostgreSQL
storageMySQL
databaseMongoDB
memoryRedis
pageviewElasticsearch
cloudAWS
cloud_queueGCP
cloud_syncAzure
rocket_launchVercel
rocketNetlify
flareCloudflare
deployed_codeDocker
hubKubernetes
syncCI/CD
settings_suggestDevOps
androidAndroid
phone_iphoneiOS
verified_userAuth & JWT
credit_cardStripe
insightsAnalytics
codeWebSockets
sync_altKafka
broadcast_on_homePub/Sub
boltFirebase
boltSupabase
fact_checkJest
bug_reportCypress
bug_reportPlaywright
commitGitHub
commitGitLab
design_servicesFigma
smartphoneReact Native
developer_modeReact
view_quiltNext.js
view_agendaVue
change_historyAngular
waterTailwind CSS
codeHTML
styleCSS
codeTypeScript
codeJavaScript
neurologyPython
filter_vintageDjango
filter_vintageFlask
diamondRuby on Rails
phpPHP
sports_motorsportsGo
handymanRust
kitesurfingKotlin
flightSwift
codeNode.js
lanExpress
hubREST APIs
hubGraphQL
alt_routegRPC
storagePostgreSQL
storageMySQL
databaseMongoDB
memoryRedis
pageviewElasticsearch
cloudAWS
cloud_queueGCP
cloud_syncAzure
rocket_launchVercel
rocketNetlify
flareCloudflare
deployed_codeDocker
hubKubernetes
syncCI/CD
settings_suggestDevOps
androidAndroid
phone_iphoneiOS
verified_userAuth & JWT
credit_cardStripe
insightsAnalytics
codeWebSockets
sync_altKafka
broadcast_on_homePub/Sub
boltFirebase
boltSupabase
fact_checkJest
bug_reportCypress
bug_reportPlaywright
commitGitHub
commitGitLab
design_servicesFigma
Expertise
Full-Stack Digital Product Development
smartphone
Mobile App Development
High-performance mobile applications built for iOS and Android. From concept to deployment, I create scalable apps with intuitive interfaces and smooth performance.
- check_circleNative & Cross-Platform Applications
- check_circleModern UI/UX Implementation
- check_circleApp Store & Play Store Deployment
- check_circlePerformance & Security Optimization
web
Web Platform Development
Modern, fast, and scalable web applications and platforms built with cutting-edge technologies to support business growth and long-term maintainability.
- check_circleResponsive Web Applications
- check_circleCustom Frontend & Backend Development
- check_circleAPI Development & Integrations
- check_circleSEO & Performance Optimization
dns
Backend & System Engineering
Robust backend systems designed for speed, reliability, and scalability, supporting everything from startups to complex platforms.
- check_circleCloud Infrastructure & Server Architecture
- check_circleDatabase Design & Optimization
- check_circleMicroservices & Scalable APIs
- check_circleAuthentication, Security & Data Management
bolt
Real-Time & Advanced Systems
Development of systems that require instant data processing and live updates, ideal for modern digital platforms.
- check_circleReal-time Applications (chat, notifications, live updates)
- check_circleWebSockets & Event-Driven Systems
- check_circleData Synchronization & Streaming
- check_circleHigh-Performance APIs
psychology
End-to-End Product Development
Development of systems that require instant data processing and live updates, ideal for modern digital platforms.
- check_circleMVP & Startup Product Development
- check_circleSystem Architecture & Technical Planning
- check_circleThird-party Integrations
- check_circleDeployment, CI/CD & DevOps
Tech Stack
Modern Stack for Modern Growth
I use the most reliable and scalable technologies to ensure your project stands the test of time.
view_quiltFrontend
React NativeReactNext.jsVueAngularTailwind CSSHTMLCSSTypeScriptJavaScriptAndroid+2 more
databaseBackend
PythonDjangoFlaskRuby on RailsPHPGoRustKotlinSwiftNode.jsExpressREST APIsGraphQL+16 more
cloud_doneCloud & Ops
AWSGCPAzureVercelNetlifyCloudflareDockerKubernetesCI/CDDevOpsAnalytics+2 more
Workflow
How I Deliver Success
1
Discovery
Defining project goals, user personas, and technical requirements through deep consultation.
2
Architecture
Designing the system blueprint, selecting the stack, and planning for scale and security.
3
Development
Agile coding with regular updates, unit testing, and continuous integration cycles.
4
Delivery
Deployment to production, monitoring performance, and providing post-launch support.
Engineering Insights
Technical Blog
Engineering
Universal Links, App Links, and Intent Filters: Deep Routing on Every Platform
Configure iOS Associated Domains, Android App Links with assetlinks.json, React Navigation linking configs, and debugging failed handoffs between browser and native app.
Engineering
Payments with Stripe: Payment Sheet, SCA, and Native Wallets in React Native
Integrate @stripe/stripe-react-native with PaymentSheet, 3-D Secure and Strong Customer Authentication, Apple Pay and Google Pay tokens, and idempotent server-side PaymentIntents.
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