endorsedCompleted

Mobile App & Backend Development for Hardware Technology Company

Services Covered:

Staff Augmentation • Mobile Application Development • UI/UX Design

Industry

Information Technology

Duration

36 months

Budget

200K - 999K

Start Date

1 July 2022

Team Size

6-10 Employees

Engagement Model

Offshore

Project Capability Score (PCS)

83/100

Strong

Project Capability Score (PCS) estimates how capable Xmartlabs is of successfully delivering a project like this, based on its past experience, track record, and ability to handle similar work. Learn more about PCS

Client

Confidential

Cambridge, United States of America

Project Summary

Xmartlabs designed and developed a mobile app (iOS and Android) and the supporting backend for a hardware-focused technology company. The vendor provided staff augmentation, built the backend primarily in Node.js hosted on AWS, and developed the mobile app in Flutter that communicates with the hardware via a complex Bluetooth protocol. The engagement launched the app and continues under an ongoing maintenance contract.

Key Challenges

Need to design and develop a backend and mobile app to support the company's hardware
Integrate a complex Bluetooth protocol and coordinate state with the hardware
Implement a custom graphical UI and visualizations for time-series data

Project Deliverables

Backend deployed on AWS
Mobile app (iOS and Android) published to App Store and Google Play
Custom graphical UI
Time-series data visualizations
Integration with complex Bluetooth hardware

Project Solution

Xmartlabs provided flexible staff augmentation, beginning with a larger team to design the system and later integrating a smaller team into the client's engineering workflow for development and maintenance. They owned development and deployment of the backend (primarily Node.js) hosted on AWS and were sole developers of the mobile app (primarily Flutter) for iOS and Android. The team implemented complex Bluetooth communication and state coordination with the hardware, created a custom graphical UI, and built visualizations for time-series data.

Project Outcome

App launched and has several thousand active users (around 5,000 downloads)
Delivered on time and within budget
Engagement evolved over three years into a time-and-materials arrangement and continues under an ongoing maintenance contract

Platforms

Mobile
Cloud

Tech Stack

Node.js
Flutter
Swift
Kotlin
JavaScript
Amazon Web Services (AWS)

Client Endorsement

Overall Review Rating

Timeliness

Cost Rating

Willing to Refer

Quality of Deliverables

“The app has around 5,000 downloads, and Xmartlabs has launched the app in the App Store and Google Play Store. The team provides good recommendations, and the client is satisfied with the app's quality and performance. Xmartlabs communicates well via Slack and email and tracks progress using Jira.”
Anonymous
CTO
Date: 07/31/2025