Energy & Utilities

Full Stack and DevOps Support for HVAC as a Service

5 years building and scaling Fujitsu’s AirStage Cloud platform.

Results

Successfully launched AirStage Cloud, Fujitsu’s multi-site HVAC management system.

Refactored legacy systems into a scalable, maintainable cloud-based web application.

Reduced operational complexity and maintenance costs through automation and DevOps integration.

Established a long-term engineering partnership across five specialized teams.

Highlights / Intro

Fujitsu was developing an innovative multi-site HVAC management system, AirStage Cloud—to provide real-time monitoring and control for commercial building environments.

To accelerate development and ensure scalability, Fujitsu partnered with unosquare to expand engineering capacity across R&D, front-end, back-end, and DevOps disciplines.

The collaboration led to the successful launch of the platform and evolved into a five-year partnership supporting continuous innovation and operational excellence.

Challenge

Fujitsu needed to:

Transition from legacy architecture to a scalable, cloud-based environment.

Accelerate time-to-market for AirStage Cloud.

Build a flexible development model capable of supporting new features and automation testing.

Reduce infrastructure costs and streamline operations.

Solution

unosquare embedded a multidisciplinary nearshore team to refactor existing applications, develop the AirStage Cloud web platform, and implement DevOps best practices.

The initiative focused on delivering a scalable, secure, and cost-efficient AWS-based infrastructure that supported a shift toward microservices and automated delivery.

Today, unosquare continues to support five core teams across automation testing, front-end and back-end development, UX/UI design, and DevOps—helping Fujitsu sustain product reliability and continuous innovation.

Scope:

Full Stack Development (Front-end, Back-end)
R&D and Feature Development
DevOps Automation and CI/CD
UX/UI Design

Tech Stack

Vue.js, Node.js, Python, JavaScript

Centers of Excellence Involved

Software Engineering COE → Built and optimized core AirStage Cloud architecture for scale and reliability.

Cloud & Infrastructure COE → Established AWS-based systems supporting continuous delivery and microservices adoption.

Product Engineering COE → Enhanced system testing and release consistency across global environments.

QA COE → Validated system stability, security, and performance across environments.

Data COE → Designed and implemented data pipelines and data structures to support real-time system monitoring, operational analytics, and historical performance analysis across multiple sites.

AI COE → Enabled intelligent system capabilities by supporting anomaly detection, system behavior analysis, and future predictive maintenance use cases through AI-ready models and architectures.