Hawaii Information Service

Hawaii Information Service Modernizes & Scales Its MLS Platform With MEV

Fully Reengineered Product Suite

Rebuilt core systems to support market growth and moved 100% of users with zero downtime or data loss.

RESO DD 2.0 Certification

Web API certified for RESO and OData compliance, meeting top industry standards for data integration.

300+ Filters Handled

Industry

Real Estate

Provided Services

Custom Software Development Digital Transformation

UX/UI Design

Duration

2018 - present (7+ years)

Tech Stack

Java / Spring Boot / NX Monorepo / Angular / NGRX / ArcGIS Map / PostgreSQL / MSSQL Server / Elasticsearch / ANTLR / Kubernetes / Docker / Jenkins

[ client & product overview/ ]

Hawaii Information Service (HIS) is a real estate data services company and MLS provider serving the islands of Kauai and Hawaii.

Since 1984, they’ve helped real estate professionals transition from printed books to modern web-based platforms. Today, HIS operates a multi-sourced database with 300+ data fields covering over 600,000 properties across the state. They also offer data feeds, custom reports, and web tools used by businesses well beyond real estate.

600K

Properties Managed

300+

Search Parameters Supported

[ challenges/ ]

The Core Challenges Solved

HIS was committed to modernizing its product suite but faced critical resource and technology barriers.

C1:

Modernize Without Disruption

Legacy systems still needed to function, so the challenge was to build the new system alongside the old one—then gradually transition users without breaking anything.

C2:

No Delivery Bandwidth

Internal teams were fully booked. Turning strategy into working software required reliable external support.

C3:

Outdated Tech, Slowing Down Growth

Lagging APIs, limited reporting, and clunky workflows couldn’t keep up with business needs.

C4:

Lack of Alignment and Visibility

Development lacked structure. Roadmaps were unclear and feedback loops were broken.

C5:

Product Falling Behind User Needs

Clients expected faster search, cleaner interfaces, and better tools. HIS needed to respond quickly or risk losing relevance.

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[ how we did it/ ]

Solution & Implementation

This modernization enabled lower costs, scalable systems, improved UX, and certified API compliance.

S1:

Core Systems Rebuilt

Modernized the MLS platform while keeping operations running. Reporting was re-engineered for speed using deferred processing and CDC. Search logic and workflows were rebuilt, and Esri map integration was overhauled.

S2:

Infrastructure That Scales

Migrated data storage to AWS S3, stabilized APIs, and swapped out a failing email engine for Mailchimp—improving performance and reliability.

S3:

Smarter Search

Built a flexible query engine using ANTLR4, handling 300+ parameters with Elasticsearch. Transformed listing data into clear, visual layouts that users actually engage with.

S4:

UX That Adds Value

Agents gained a sleek, mobile-ready portal with integrated messaging, lead management, chatbots, smart templates, and SMS.

S5:

Compliant & Certified APIs

We engineered RESO- and OData-compliant Web APIs earning HIS a RESO DD 2.0 Certification—official recognition for meeting top-tier standards in data integration and interoperability.

S6:

Delivery Process Reinvented

Introduced clear roadmaps, better standups, and improved sprint planning. Teams aligned and delivery stayed on track.

[ portfolio/ ]

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