Hire the Best Packer Developers

I'm a technical fashion designer and pattern maker, with 13 years of experience making patterns and tech packs for designers. I make 3D mockups of garments and complete tech packs for clothing manufacturing. I've been working with clients worldwide as a freelancer since 2018, and previous to that I've been working at four different garment factories. I make patterns for men, women and kids, patterns for bags and backpacks. I make the size grading and send the patterns in different formats such as .dxf or .pdf, as required for the client. I work with Lectra, Gerber, Clo3D, Illustrator, Investronica and Photoshop.

I'm the Android developer who built in-vehicle navigation for Harley-Davidson and a 100,000+ download app with on-device AI. Need the hard parts done, Bluetooth/BLE, on-device AI, or native speed that can't lag? That's my lane. 8+ years, Kotlin-first. See exactly how I work in my Portfolio below: iThing, a live open-source IoT dashboard (99.6% Kotlin, Clean Architecture, Jetpack Compose), and Ambicam, my 100,000+ download surveillance app on Google Play. I also ship cross-platform with Kotlin Multiplatform (KMP), so you get iOS and Android from one codebase. Most clients come to me with one of these: • A Bluetooth/BLE device that pairs but won't stay connected or sync reliably • An app that needs AI running on the device, not a slow round-trip to the cloud • A native Android app that lags, drains battery, or crashes under load • Two separate budgets for iOS and Android when one shared codebase would do SERVICES I PROVIDE BLE & IoT-Connected Apps • BLE / Bluetooth device pairing, reconnection and background sync • Zigbee, TCP/IP and WiFi smart-device integration • Smart-home, wearable, healthcare and industrial IoT apps • Device data synced to your backend over REST API and Firebase • Native hardware integration that no-code tools and AI cannot fake On-Device AI & Computer Vision • On-device ML with TensorFlow Lite (data never leaves the phone) • Face recognition, number-plate / object detection, OCR (OpenCV) • Camera pipelines and real-time inference • Gemini and Claude API integration for cloud LLM features Native Android App Development • Kotlin, Jetpack Compose, Clean Architecture, MVVM, Coroutines, Flow • REST API integration, Firebase, Room, offline-first apps • Performance tuning, JNI/NDK and C/C++ for the critical paths • Automotive-grade, latency-sensitive, real-time systems • Full lifecycle: architecture to Play Store launch Kotlin Multiplatform (KMP) Cross-Platform • One shared Kotlin codebase for iOS and Android (60-95% shared) • Compose Multiplatform for shared UI • Roughly 35-50% cheaper than two native teams • Migrating an existing Android app to KMP PROVEN RESULTS (see for yourself) • iThing, a live open-source IoT dashboard (in my Portfolio): 99.6% Kotlin, Clean Architecture + MVI, Jetpack Compose, Hilt • Ambicam, a 100,000+ download Android surveillance app I built and maintain solo, on Google Play (iOS in Swift too) • In-vehicle navigation for Harley-Davidson (TomTom Navkit): led 5 engineers, 25% latency reduction • On-device face + number-plate recognition (TensorFlow Lite + OpenCV) and native C/C++ live streaming via JNI/NDK • BLE, Zigbee, TCP/IP and WiFi integrations for government-scale tracking and attendance hardware • First Upwork contract closed at 5.0 with all five client-insight endorsements HOW I WORK Communication: I reply within a few hours, give you honest timelines, and tell you the moment something changes. No silent weeks. Quality: Clean architecture, code that respects the Android lifecycle and device memory, tested on real hardware (not just an emulator). Where I fit: A senior Android app developer based in Munich, fluent in English and Hindi, conversational German, comfortable in EU time zones and GDPR-aware by default. TECHNOLOGY Native: Kotlin, Java, Jetpack Compose, Clean Architecture, MVVM/MVI, Coroutines, Flow, Hilt Cross-platform: Kotlin Multiplatform (KMP), Compose Multiplatform AI/ML: TensorFlow Lite, OpenCV, on-device ML, Gemini API, Claude API Native/Perf: JNI/NDK, C/C++, real-time streaming, performance profiling IoT/Hardware: BLE, Bluetooth, Zigbee, TCP/IP, WiFi, smart-device integration LET'S BUILD IT If your project involves a Bluetooth or IoT device, on-device AI, a performance-critical Android app, or a Kotlin Multiplatform build, send me the details. I will reply within a few hours with an honest read on feasibility, the approach I would take, and a realistic timeline. What is the hardest technical part of your app, the piece you are least sure can be done? Tell me that first. - Khyati Keywords: Android App Developer, Kotlin Developer, Mobile App Developer, Jetpack Compose, Kotlin Multiplatform (KMP), BLE Developer, IoT App Developer, On-Device AI, TensorFlow Lite, OpenCV, Native Android, Android NDK, Clean Architecture, Firebase, REST API, Cross-Platform App Developer, iOS Developer.

Hi, I'm Abhiraj Anand, a Full Stack Developer with 5+ years of experience specializing in Travel Technology Development, Travel Portal Solutions (B2B & B2C), Rental Platforms, and complex API Integrations including Amadeus, Sabre, Travelport, Ratehawk, TBO, Tripjack, Mondee, Mystifly, Hotelbeds, Webbeds, Channel Manager, Payment Gateways, etc. I help travel agencies, OTAs, tour operators, DMCs, and rental businesses build modern booking platforms, automate operations, and scale through reliable travel technology solutions. --- ## Services I Offer * Travel Portal Development (B2C, B2B, White Label Solutions) * Flight, Hotel, Car Rental, Package & Activity Booking Systems * Travel API Integration (Amadeus, Sabre, Travelport, TBO, Tripjack, Hotelbeds, Webbeds, Channel Manager Integration, PMS integration, Payment Gateways) * Custom Web Development (Laravel, ReactJS, NodeJS, Next.js) * WordPress Development & Theme Customization * Shopify Store Development & Private App Integration * Performance Optimization, Scalability & Mobile Responsiveness ## Core expertise: * TravelPortal development – B2B, B2C, B2E, Corporate Travel Booking Tools & Agent Management Systems * GDS integration – Travelport, Amadeus, Sabre * NDC & LCC Integrations – Verteil, Tripjack, TBO, EaseMyTrip (EMT) and airline direct APIs * Hotel Booking Integrations – RateHawk, Expedia, TBO Holidays, Hotelbeds, Guesty, Webbeds and Private Inventory Systems (PMS) * Hotel mapping – Manual & Giata * Flight Expert integration & automation * Cruise, car rental, DMC software, package management tools * Travel CRM, ADM management, HX segment tools * Multi-API integrations – Flight, Hotel, Car, Cruise, Rail, Bus, Sightseeing, Activities * Payment gateways - Stripe, Razorpay, PayPal, Cashfree, Worldpay, Paytm, Worldline, PayU, ConnectIPS, CCAvenue, etc. --- ## Featured Projects * ClickYourJourney – Complete Travel Portal (B2C + B2B) Modules for flights, hotels, packages, activities, supplier management, lead management, invoicing, payment gateways, and multiple travel APIs. Tech Stack: PHP (CodeIgniter), ReactJS, MySQL * StudyDrive – Ride Share Platform Ride booking module with driver and guest management and marup module & Stripe payment gateway. Tech Stack: Node Js, Next Js, MySQL, Stripe * TeenvaTravels – Travel & Rental Website Next.js frontend, NodeJS backend, integrated Amadeus API for flight bookings, car rental, room/property rental. Tech Stack: Next.js, NodeJS, MongoDB --- ## Skills * Travel APIs & Technology: Amadeus, Sabre, Travelport, TBO, Tripjack, , Mondee, Mystifly, Ratehawk, Hotelbeds, Webbeds, Channel Manager, Payment Gateways * Languages & Frameworks: PHP (Laravel, CodeIgniter), JavaScript (ReactJS, NodeJS, Next.js), Python, Java, C++ * Frontend Development: ReactJS, AngularJS, Tailwind CSS, Bootstrap, jQuery, HTML5, CSS3 * Databases: MySQL, MongoDB * Tools & Platforms: AWS, Docker, GitHub, Bitbucket, GitLab, Figma, Photoshop * Other Expertise: API Integration, Optimization, Agile Development, Scalable Architecture ## Why Clients Choose Me * Expertise in travel technology & API-driven platforms * Clean, scalable, and maintainable code * On-time delivery with full transparency * Proven record of boosting booking efficiency & conversions * Ongoing post-launch support & maintenance ## Travel Technology Development * Flight Booking Portal Development * Hotel Booking Portal Development * Travel Portal Development * OTA Development * B2B Travel Portal Development * B2C Travel Portal Development * Corporate Travel Booking Systems * Travel CRM Development * Reservation Management Systems * Travel Booking Engine Development ## API Integrations * Amadeus API Integration * Sabre API Integration * Travelport API Integration * Flight API Integration * Hotel API Integration * NDC API Integration * GDS Integration * Supplier API Integration * Channel Manager Integration * Payment Gateway Integration * PMS Integration ## Travel Technology Expertise * Amadeus Developer * Sabre Developer * Travelport Developer * Ratehawk Developer * TBO Developer * Tripjack Developer * Webbeds Developer * Hotelbeds Developer * Channel Manager Developer * PMS Developer --- Travel Technology Expertise & Keywords Car Rental Portal • White Label Travel Portal • Travel API Integration • Amadeus Integration • Sabre Integration • Travelport Integration • Amadeus Development • Sabre Development • Travelport Development • Hotelbeds Integration • RateHawk Integration • TBO Integration • Tripjack Integration • Webbeds Integration • Stripe Integration • Razorpay Integration • PayPal Integration

I help fashion brands turn sketches, reference garments, or product ideas into clear factory-ready tech packs, sample development files, and production-ready documents. My work covers the product development process — from design interpretation and technical documentation to fabric and trim direction, sample development support, fit and construction review, and final production-ready handoff files. What I can help with: • Tech Pack Development CAD flats, measurement specs, BOM, construction details, stitching notes, grading guidance, fabric and trim details, label/packaging notes, and factory-ready production comments. • Product Development Turning sketches, inspiration images, or reference garments into clear development directions, including silhouette, fabric, trims, construction, fit, and finishing details. • Sample Development Support Reviewing prototypes, checking fit and construction, providing clear revision notes, and helping refine the garment from first sample to approved sample. • Fabric & Trim Direction Suggesting suitable fabrics, trims, labels, and materials based on the target quality, price level, product type, and production requirements. • Production-Ready Handoff Preparing clear technical files and final development notes so factories can understand the approved design or sample with fewer misunderstandings. I have experience across womenswear, loungewear, ready-to-wear, embellished garments, branded merchandise, and small-batch development. My background includes fashion design, technical design, sampling, sourcing, and factory communication. Based in Shenzhen, I work close to fabric markets, trim suppliers, sample rooms, and apparel factories, which allows me to support both remote tech pack work and hands-on sample development when needed. I’m a good fit for emerging brands, start-up fashion labels, and designers who need more than a basic tech pack — especially if you need help connecting the design idea, sample development process, and production-ready documentation. Message me if you need help turning your design idea, sketch, or reference garment into a clear tech pack, sample-ready file, or production-ready garment.

With over 13 years of experience at NASA and JHU/APL, I specialize in building mission-critical applications that combine advanced multibody dynamics with immersive 3D/AR interfaces. I am a specialist in "Scientific Mobile" development—taking complex engineering logic and translating it into polished, production-ready software for iOS, Android, and Web. CORE SPECIALIZATIONS: SPATIAL ROBOTICS & DIGITAL TWINS: High-performance visualization for the robotics industry. Expertise in URDF parsing, MuJoCo physics integration, and real-time kinematic overlays using RealityKit and Unity. SCIENTIFIC MOBILE ARCHITECTURE: Expert-level development in Swift (SwiftUI), Kotlin (Jetpack Compose), and Python. I specialize in bridging scientific computing stacks with modern mobile UI. 3D GRAPHICS & ASSET PIPELINES: Full-cycle 3D development including Blender modeling, mobile-optimized GLB/USDZ file exports, photogrammetry for medical/industrial devices, and 3D graphics theory. TECHNICAL LEADERSHIP: 13 years of Aerospace R&D experience as a supervisor and lead engineer. I provide the high-level architecture and project management needed to take an idea from a whiteboard to a shipped MVP. THE ENGINEERING EDGE: Most developers lack the mechanical background to understand complex dynamics; most engineers lack the software skills to ship a native mobile app. I deliver both. My work on AR Mobile Robotics and Mobile Multibody Dynamics demonstrates my ability to build mathematically rigorous tools that remain intuitive and user-friendly. PROJECT FOCUS (4–12 WEEK SPRINTS): Robotics/Aerospace MVPs: Transforming research algorithms into prototypes. Industrial AR Tools: Building spatial viewers for medical or mechanical hardware. 3D Visualization: Creating high-fidelity 3D assets for complex products. Let’s build the future of spatial engineering together.

With 8+ years of professional Android experience, I specialize in location-based and real-time tracking apps — GPS tracking, maps integration (Google Maps, OpenStreetMap), and Firebase-backed data sync. At my current role, I work on a multi-module driver/logistics app that handles real-time location data at scale, and I led a rework of our notification system that improved delivery reliability from 85% to 97% for 40K+ active users — critical for apps where users depend on timely location/status updates. On Upwork, I've completed a geomapping mobile project (5.0★). I also bring real-time messaging integration experience (MQTT, via Gojek's Courier SDK) — relevant for apps needing live tracking updates rather than just static map display. Core Expertise: Real-time GPS tracking & location services (background location, battery optimization) Maps integration: Google Maps SDK, OpenStreetMap Firebase (Auth, Firestore, Cloud Messaging) for data sync and notifications Multi-module Android architecture, Kotlin Coroutines & Flow Real-time messaging (MQTT) for live tracking/status updates Additional exposure: Flutter, Kotlin Multiplatform (KMM) — 1 year each