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I need a mobile app built natively for Android that functions as a full-scale construction and field-management ERP. The core idea is to give site supervisors, project managers, and office staff one place where they can track projects, crews, materials, and financials in real time from the jobsite. Key screens include project dashboards, daily logs, timesheets, inventory levels, purchase orders, and simple cost-to-complete reporting. Data must sync reliably even when the device is offline, then push to the server once a connection returns. I already have rough workflow diagrams and can supply sample JSON for each module, so you’ll be able to jump straight into UI/UX and API integration. Deliverables • Interactive Figma (or similar) prototype for sign-off • Android Studio source code with modular architecture (MVVM or clean architecture preferred) • REST/GraphQL integration layer and local persistence (Room or Realm) • Unit and instrumented tests plus a short user guide • One round of post-launch bug fixes Acceptance criteria: the app installs on Android 10+, all listed modules load within three seconds on mid-range devices, and offline data sync resolves without conflict loss. If you’ve shipped complex field apps before—especially in construction or logistics—let me know; that experience will be invaluable here.
Projektin tunnus (ID): 40325260
66 ehdotukset
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Aktiivinen 20 päivää sitten
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66 freelancerit tarjoavat keskimäärin ₹39 809 INR tätä projektia

Hi there, I’ve reviewed your Android app requirements and would love to collaborate on your project. With 5+ years of experience in native Android development, I specialize in building high-performance, user-friendly apps with clean UI, optimized architecture (MVVM/MVI), and seamless API integration. I’ll start with a clear project roadmap, provide regular progress updates, and ensure the app is thoroughly tested for stability and performance before launch. Let’s connect to discuss your app idea in detail — I’m ready to bring your vision to life! Best, Bhargav Android Developer | Kotlin & Java Expert
₹25 000 INR 7 päivässä
6,9
6,9

Your offline-sync strategy will make or break this app. If two supervisors edit the same purchase order while offline and you don't implement conflict resolution with timestamps or version vectors, you'll lose data when they reconnect. I've seen this exact scenario crash a logistics ERP rollout because the dev team assumed "last write wins" was good enough. Before I map out the architecture, I need clarity on two things. First, what's your expected conflict-resolution rule when the same record gets edited offline by multiple users—do you want automatic merge with field-level precedence, or should the app flag conflicts for manual review? Second, what's your data retention policy for offline storage—are supervisors caching 30 days of project history or just the active week, because that changes whether I use Room with pagination or Realm's object-server sync? Here's the architectural approach: - ANDROID NATIVE + KOTLIN: Build using MVVM with Jetpack Compose for declarative UI, reducing boilerplate by 40% compared to XML layouts and ensuring smooth rendering on mid-range devices. - ROOM + WORKMANAGER: Implement a two-way sync engine that queues offline changes, detects conflicts using vector clocks, and retries failed uploads with exponential backoff to guarantee zero data loss. - REST API INTEGRATION: Design a versioned API client with Retrofit that batches requests during sync windows and handles 401/403 errors gracefully when field tokens expire mid-session. - MODULAR CLEAN ARCHITECTURE: Separate domain, data, and presentation layers so your timesheets module doesn't break when you add equipment tracking six months from now. - INSTRUMENTED TESTING: Write Espresso tests that simulate offline mode, verify sync accuracy, and confirm sub-3-second load times on Samsung A-series devices under network throttling. I've built three field-management apps for construction and oil-and-gas clients where offline reliability was non-negotiable. One handled 200+ daily logs per crew with photo attachments syncing over spotty LTE. Let's schedule a 15-minute call to walk through your JSON samples and confirm the sync logic before I start building—I don't take on projects where data integrity isn't bulletproof from day one.
₹22 500 INR 7 päivässä
6,4
6,4

Hi, I’d be happy to help you with this. I’ve done similar Android projects and focus on fast, reliable delivery. Let me know the details — I can start right away. – Arun
₹25 000 INR 7 päivässä
6,0
6,0

I can build a robust native Android ERP app tailored for construction field management, with a strong focus on performance, offline reliability, and clean architecture. I have experience developing complex mobile apps with MVVM structure, REST API integration, and local persistence using Room to ensure seamless offline-first data sync. I’ll translate your workflows and JSON into an intuitive, efficient UI, starting with a clickable Figma prototype for approval. The app will handle real-time tracking of projects, crews, materials, and financials while remaining fast and stable on mid-range devices. I’ll also include testing, clear documentation, and post-launch support to ensure a smooth rollout.
₹18 000 INR 5 päivässä
5,6
5,6

Hi, I am an IIT Grad, Google Associate Android Developer, ex-BFSI and worked at fortune 500 companies. I will make it a reality for you. As a Mobile App Developer, I can develop a native Android app using Kotlin with Firebase Realtime Database or Firestore backend for data synchronization, implementing offline capabilities and real-time updates. Kindly click on the chat button so we can discuss and get started. Will share you my prior projects done and my resume too. I have been doing freelancing since 2019 worked at top MNCs in both USA and India. Lets connect
₹12 500 INR 7 päivässä
5,3
5,3

Having mastered various technologies and frameworks over my 13+ year career, I am confident in my ability to create your Android Construction ERP App with high efficiency and quality. My experience in mobile app development using React Native and Flutter can be instrumental in crafting a natively-built Android app that's both dynamic and easy to navigate. What sets me apart is not only my extensive knowledge of backend systems but also my understanding of API integration, which will prove invaluable when incorporating your existing workflow diagrams and JSON sample data into the app. Furthermore, I can ensure reliable offline syncing, protecting against conflict loss, given the importance of real-time data tracking at construction sites. I have worked on multiple complex field apps in my professional history, some even within the logistics and construction domains. Having this hands-on experience at building similar applications has given me a deep understanding of the specific needs and challenges inherent in such projects. If given this opportunity, you can expect me to skillfully combine this experience with your vision to deliver an intuitive, robust, and thoroughly tested application that seamlessly integrates all the specified modules. Let's turn your project into a phenomenal reality! Thank you for considering me for the job.
₹25 000 INR 7 päivässä
5,9
5,9

With over a decade of software development experience, I have had the opportunity to work on a diverse range of projects, including complex field apps in the logistics and operations domain such as the one you're seeking. Having personally led teams for similar ventures, I understand the criticality of accurate real-time data synchronization, particularly in an offline scenario, and can ensure your app operates seamlessly under such conditions. Employing modular architecture (MVVM or clean architecture) coupled with robust REST/GraphQL integration will facilitate scalability and maintainability. Further, my proficiency in Android Studio, Room, and Realm will enable me to adeptly navigate through the Android platform's unique challenges while delivering an app that performs optimally on mid-range devices without compromising on the functionality or UI/UX. Above all my comprehensive method - understanding your business goals first to design reliable systems and then build solutions using technologies like PHP API asks for this kind of project. I believe my skill set combined with a demonstrated track record of successful app releases and long-term support is what you need to ensure a powerful construction ERP app that's aligned with your project vision and exceeds your expectations. I look forward to building something transformative together!
₹32 000 INR 18 päivässä
5,7
5,7

Hi, I can build your Android construction & field-management ERP app with a strong focus on real-time tracking, offline-first sync, and scalable architecture. I have 9+ years of mobile development experience and have worked on complex apps involving dashboards, data sync, inventory, and role-based workflows. Your requirement—project dashboards, daily logs, timesheets, inventory, purchase orders, and cost tracking—fits well with my expertise. I’ll follow a clean MVVM architecture with modular structure, using Room for local persistence and a robust sync engine to handle offline scenarios without data loss. I’ll also create a polished Figma prototype first for approval, ensuring UI/UX clarity before development begins. What you’ll get: • Interactive Figma prototype • Clean, maintainable Android code (Android Studio) • REST/GraphQL integration • Offline-first sync system • Unit + UI tests • Post-launch bug support Timeline: 5–7 weeks I’d be happy to review your workflow diagrams and JSON to get started quickly. Let’s build something reliable and scalable for your field teams. Best regards, Piyush Ghoghari
₹30 000 INR 45 päivässä
5,4
5,4

Hello! As per your project post, you’re looking to build a Android construction and field management ERP app that allows supervisors, project managers, and office staff to track projects, crews, materials, and financials in real time with reliable offline sync and modular architecture. The goal is to deliver a scalable Android ERP solution with project dashboards, daily logs, timesheets, inventory, purchase orders, and cost to complete reporting that works seamlessly on job sites and syncs data when connectivity is restored. My focus will be on delivering a structured Android ERP solution, featuring: native Android app with MVVM or clean architecture using Android Studio, interactive Figma prototype for UI and workflow approval, project dashboards with daily logs, timesheets, inventory and purchase order modules, offline first data storage using Room or Realm with automatic sync to backend, REST or GraphQL API integration. I specialize in Android native development, ERP and field management systems, offline first mobile applications, REST and GraphQL integrations, and scalable clean architecture with focus on performance, reliability, and maintainable code. My focus will be on building a stable construction ERP app aligned with your workflow diagrams and JSON structure. Let’s connect to review your workflow diagrams and backend API structure so we can finalize the development phases and timeline. Best regards, Nikita Gupta.
₹75 000 INR 28 päivässä
5,3
5,3

Hi! I can develop your native Android ERP app for construction and field management, covering project dashboards, daily logs, timesheets, inventory, purchase orders, and cost reporting. I’ll implement offline-first data sync using Room or Realm, integrate with your REST/GraphQL APIs, and follow MVVM/clean architecture to keep the code modular and maintainable. I can also create an interactive Figma prototype for sign-off and provide unit/instrumented tests to ensure stability. My experience with field and logistics apps ensures smooth, fast-loading modules even on mid-range devices. Looking forward for your positive response in the chatbox. Best Regards, Arbaz H
₹25 000 INR 7 päivässä
5,6
5,6

My extensive experience as a Full Stack Web and Mobile App Developer, with a focus on mobile app development, positions me well for your Android Construction ERP project. I've built numerous applications from scratch, including complex field apps that require efficient data syncing and management—skills crucial to your project. I'm adept at APIs, database management, and UI/UX-friendly development—necessary for the smooth performance and intuitive interface you're looking for. In your project description, you appreciate clean, optimized, and maintainable code - an area where I consistently deliver. Additionally, I understand the importance of on-time delivery and maintaining clear communication channels throughout the project's lifecycle. These values have garnered me a reputation for being dependable and professional with my clients; traits you can bet on for this project. It's important to me to build not only applications but also relationships with my clients. Choosing me will give you access to 5+ years of expertise backed by real-world experience across various domains, just the kind of experience you need on your team. And together, we can transform your vision into a successful, user-friendly solution – ready to tackle even the most challenging construction tasks!
₹25 000 INR 7 päivässä
4,6
4,6

Hey, I'm Mahmoud. I am a mobile apps developer working with Flutter. I am interested in building this construction ERP app for you. I've built similar field-management apps with offline-first architecture, real-time sync, and complex data modules — and I understand how critical reliability is on the jobsite. For this project, I can deliver: Full Android app using Flutter. Offline-first sync using Room database + background sync service Modular architecture (MVVM + clean architecture) Project dashboards, daily logs, timesheets, inventory, purchase orders, cost-to-complete reporting REST/GraphQL integration layer Unit and instrumented tests Figma prototype for sign-off User guide + one round of post-launch fixes I'm comfortable working from your workflow diagrams and sample JSON to move quickly. Don't hesitate to contact me to discuss more details. Regards, Mahmoud
₹25 000 INR 7 päivässä
4,2
4,2

Hello, I’m Karthik, a Senior Android Developer with 10+ years of experience building complex field and ERP applications, including construction and logistics solutions. I can develop your full-scale Android construction ERP with reliable offline sync, modular architecture, and fast, responsive UI for mid-range devices. Proposed Approach: ✔ UI/UX: Interactive Figma prototype for sign-off before development ✔ Architecture: Clean/MVVM pattern for modular, maintainable Android Studio code ✔ Data Management: Local persistence via Room/Realm, offline-first with automatic sync when online ✔ API Integration: REST/GraphQL layer for seamless backend communication ✔ Core Modules: Project dashboards, daily logs, timesheets, inventory, POs, cost-to-complete reporting ✔ Testing & QA: Unit and instrumented tests, post-launch bug fixes, and short user guide Performance Goals: • Modules load <3 seconds on Android 10+ mid-range devices • Offline changes sync without conflicts or data loss I’ve shipped several field-management and ERP apps for construction and logistics clients, ensuring fast, reliable, and scalable mobile solutions. Your workflow diagrams and JSON samples will allow me to start development immediately. Best Regards, Karthik
₹55 000 INR 7 päivässä
3,8
3,8

Hello, Thank you for the clear and detailed description of your construction and field-management ERP app. This is an exciting project, and I have the expertise to bring it to life. I will develop your native Android ERP using Kotlin in Android Studio, structuring the app with a robust MVVM architecture for maintainability and scalability. The crucial offline-first capability will be handled using the Room database for local persistence and a carefully designed synchronization strategy to prevent data conflicts. The complete UI/UX will first be prototyped in Figma based on your workflows for your review and approval before development begins. As a Computer Engineer specializing in mobile application development, my expertise aligns perfectly with the technical demands of this project, from architecting scalable systems to implementing complex data synchronization logic. To go beyond the requested single round of fixes and ensure your long-term success, I offer 90 days of complimentary post-launch support to guarantee the app remains stable and performant. I have direct experience developing and shipping complex field-service applications where offline capability and data integrity were paramount. This background will be invaluable in anticipating the unique challenges of a construction environment and delivering a truly reliable tool for your team. I’m ready to discuss the provided workflow diagrams and JSON samples to hit the ground running. Best regards,
₹19 999 INR 15 päivässä
3,5
3,5

Drawing from a rich experience of 8+ years, I am confident that my skills in Android development, Mobile App Development, and Java would make me an ideal candidate for your construction ERP app project. I understand the need to craft a seamless and efficient software system. This understanding has helped me deliver cutting-edge projects across diverse domains, notably in the field of logistics as well as HR management which shares several pain points with your project description. In terms of execution strategy, my past projects prove that I am capable of delivering an app that is both user-friendly and highly functional. I am adept at using tools/software such as Figma, which you have mentioned. These tools will greatly aid me in creating an interactive prototype for you to offer feedback upon before pushing ahead with actual coding. This approach allows us to mitigate any potential issues early on in the process and ensures you’re satisfied with the final product. Lastly, I deeply appreciate the importance of robust syncing capacity given the often patchy connectivity at construction sites. I have successfully tackled this challenge in past projects by integrating reliable GraphQL/REST APIs along with local persistence mechanisms like Realm and Room which are known for their robustness in storing data even under challenging conditions. I look forward to bringing this skill-set to fruition for your Android Construction ERP app project.
₹18 000 INR 7 päivässä
3,1
3,1

I’ll build a robust native Android ERP using clean architecture (MVVM) with offline-first sync, real-time project tracking, and high-performance modules tailored for construction workflows. You’ll get a scalable, production-ready app with seamless API integration, local persistence (Room), fast load times, and reliable conflict-free sync—delivered with tested code and clear documentation.
₹25 000 INR 7 päivässä
3,0
3,0

https://www.freelancer.com/u/seandinwiddie Hi, I’m confident I can build your Android field-management ERP with a scalable, offline-first architecture. I’ll start by creating an interactive Figma prototype for approval. Next, I’ll develop the app in Android Studio using MVVM/Clean Architecture, integrating REST/GraphQL APIs and local persistence (Room) for reliable offline sync. Core modules—projects, logs, timesheets, inventory, POs, and cost tracking—will be optimized for fast performance on mid-range devices. Finally, I’ll implement testing, ensure conflict-safe sync, and provide a user guide with post-launch support. Looking forward to collaborating,
₹18 000 INR 4 päivässä
2,5
2,5

I have read your description and analyze your requirements. I am a flutter developer. I can develop your Android app. Looking forward to work with you.
₹12 500 INR 7 päivässä
1,9
1,9

Hi I trust you're well! I've reviewed your project details and am eager to collaborate with you. With over five years of experience in mobile app development, I've successfully created over 12 applications. My portfolio includes three taxi apps, two social platforms, and multiple restaurant apps that integrate GPS and notification features. I’ve had the opportunity to work across diverse sectors such as sports, healthcare, fitness, business, and social networking. I’m confident that my experience and skill set make me an ideal fit for your project. My goal is to deliver a high-quality app that not only meets but exceeds your expectations. Additionally, I have a testing team in place to ensure the app is thoroughly vetted before it goes live. I’m committed to providing continuous support throughout the development process and afterward. Thank you for considering my proposal. I look forward to the possibility of working together. Warm regards, Prathibha Sharma Senior Mobile Developer
₹12 500 INR 15 päivässä
0,8
0,8

I see you want a native Android ERP app that gives supervisors, project managers, and office staff real-time control over projects, crews, materials, and financials—even when offline. My approach begins with translating your workflow diagrams into an interactive Figma prototype for approval, then building a modular Android Studio project using MVVM or clean architecture. I’ll implement REST/GraphQL API integration with local persistence (Room or Realm) to ensure offline-first functionality, reliable data sync, and conflict resolution. Core screens will include project dashboards, daily logs, timesheets, inventory, purchase orders, and cost-to-complete reporting, optimized to load within three seconds on mid-range devices. Unit and instrumented tests will validate critical flows, and I’ll provide a concise user guide plus one round of post-launch fixes. I’ve delivered complex field and logistics apps before, balancing robust offline functionality, responsive interfaces, and maintainable code. Once we align on modules and APIs, I can deliver a fully tested, production-ready Android ERP solution that enhances site-to-office operations seamlessly. Syed
₹31 980 INR 6 päivässä
0,6
0,6

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