IT Audit
We map applications, dependencies, and data flows, surfacing technical debt, security gaps, and integration blockers, then deliver a prioritised roadmap aligned to Australian enterprise risk and startup speed-to-market goals.
Legacy Modernisation Services in Australia
Aging platforms drain budget, slow delivery, and widen security exposure when modern integrations are bolted on late. Dev House Australia modernises legacy applications for enterprises and startups in Sydney, Melbourne, Brisbane, and nationwide, with phased audits, re-architecture, and controlled migration so you retire technical debt without losing the business rules, data, and compliance posture your organisation relies on. Backed by Dev Centre House's 14+ years of global delivery, we collaborate with Australian teams in Sydney, Melbourne, Brisbane, and nationwide.
CLIENTS
Recognised by the Best
IFAV HUB
EvryVision
ZAGG
BMW
WrkWrk
SpeakToFile
EI Electronics
MedXNote
Prosperity
Planitas
AEM Ireland
Emere
Careers Portal
Kurd Shopping
Mophie
FindQo.ie
Tenantin.ie
Dialsave
Patrick Ward & Co. Solicitors
Smart Pricer
Sitara Medical Clinic
Noel's Restaurant
R&B Concrete Pumping
Sextherapy.ie
M&I Interiors
Tenoo Restaurant
Boatbookings
Gyst
Partners Logistics
Broker IQ, YAVIA
Fenchurch Legal
Glenveagh Homes
The Matt Haycox Group
Panacea Financial Bank
Primis Bank
Medserv Medical
Scope
Legacy Modernisation Services We Deliver
Digital Transformation
We replace brittle processes with cloud-native capabilities, clear ownership, measurable KPIs, and architectures that support APIs and analytics for better business outcomes.
Legacy System Migration
Phased migration from on-premise or end-of-life stacks to modern hosting, with cutover plans, reconciliation checks, and compatibility for ERP, payments, and ledger integrations without unacceptable downtime.
Software Re-engineering
Targeted re-engineering of high-risk modules using contemporary patterns, improving performance and testability while preserving rules engines, pricing logic, and compliance workflows your teams trust.
Legacy Application Modernisation
Framework and runtime upgrades from obsolete technologies to maintainable stacks, stronger security posture, faster feature delivery, and lower run-cost for long-lived Australian business systems.
Software Re-Architecturing
Decomposition of monoliths into services, events, and integration layers so teams ship independently, scale selectively, and reduce release risk.
API Integrations
API gateways and event interfaces that connect legacy cores to SaaS and mobile platforms, eliminating silos with documented contracts, observability, and rate-safe production behaviour.
Legacy Cloud Migration
Lift-and-shift or refactor-to-cloud on AWS, Azure, and GCP, with landing zones, identity, backup, and cost controls suited to regulated and high-availability Australian workloads.
SAP Cloud Migration
Structured SAP moves with data validation, interface regression, and operational runbooks, minimising disruption to finance, supply chain, and reporting teams during transition.
Application Containerization
Docker and Kubernetes adoption for portable deployments, autoscaling, and safer releases, reducing environment drift between development, staging, and production.
UI/UX Modernisation
Accessible, task-focused interfaces that reduce training friction, replacing green-screen or cluttered legacy UX with patterns users expect from modern enterprise and consumer software.
End-to-end Quality Assurance
Regression, integration, and performance testing across UI, APIs, databases, and third parties to protect reliability and release quality.
App Modernisation Consulting
Executive-ready assessments covering code health, architecture options, compliance, and ROI, so stakeholders choose build, buy, or phased modernisation with evidence, not guesswork.
Technological Stack Expertise
Our Legacy Modernisation Tech Stack
We modernise across front-end frameworks, back-end runtimes, mobile companions, and hyperscale cloud, selecting stacks for maintainability, security, and long-term operability.
Book Your Legacy Modernisation Consultation
Schedule a call about legacy modernisation, clear scope, milestones, and delivery aligned to Australian time zones.
Process
Our Legacy Modernisation Process
Dev House Australia runs legacy modernisation in controlled phases, so stakeholders see progress, production stays stable, and your team inherits documentation, monitoring, and skills to operate the new platform.
01
System Audit and Assessment
We inventory systems, interfaces, and data stores, quantifying debt, single points of failure, and compliance exposure, then align findings to business priorities and realistic Australian delivery timelines.
02
Product Design and Architecture
Target-state architecture, migration waves, and rollback plans are agreed upfront so modern APIs connect without destabilising core transactions.
03
Implementing Modernisation
Incremental refactors and migrations in sprints with automated tests and parallel-run validation, so each release improves the platform without big-bang outages.
04
Support and Maintenance
Post-go-live monitoring, patching, and enhancement sprints, plus handover sessions so your operations and development teams own day-two support confidently.
Cost
Legacy Modernisation Investment
We scope legacy modernisation after discovery and agree commercial models upfront, fixed phases, time-and-materials, or hybrid, so Australian enterprises and startups avoid surprise scope. Investment typically reflects:
- Project Timeframes
- Complexity and Scope
- Cooperation Model
- Specialists' Hourly Rates
- Chosen Tech Stack
- Level of Customisation
Case Studies
Browse all Case Studies →-
- E-commerce
- Mobile App Development
- Web Development
- Data Visualisation
- DevOps
- Android
- Kotlin
- iOS
- Swift
- Angular
- Java
- AWS
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- Real Estate
- Mobile App Development
- Web Development
- React Native
- Angular
Reviews & Testimonials
What Our Clients Say
Clutch Review
FAQs
Q: What is a legacy application?
A legacy application runs on outdated or unsupported technology, often monolithic, poorly documented, and hard to integrate with modern cloud and mobile services. It may still be business-critical, which is why modernisation focuses on risk-managed evolution rather than rip-and-replace alone.
Q: How do I know if my business needs legacy modernisation?
Signals include rising maintenance cost, slow feature delivery, failed audits, fragile integrations, and inability to support new channels such as APIs and analytics. If outages or manual workarounds are becoming normal, a structured modernisation assessment is usually justified.
Q: How long does a legacy modernisation project take?
Timelines range from a few months for bounded modules to 12+ months for interconnected enterprise estates. After audit we propose phased waves with milestones, so Australian stakeholders can fund and govern delivery incrementally.
Q: Can you modernise systems without prolonged downtime?
Yes. We favour strangler patterns, parallel runs, feature flags, and rehearsed cutovers, implementing changes in slices with rollback paths so production keeps serving users while the new platform earns trust.
Q: What is application modernisation?
Application modernisation updates or replaces software to improve security, performance, maintainability, and UX, often via re-platforming, refactoring, containerisation, or API exposure, while preserving the business logic that makes your organisation work.
Get in touch
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