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Legacy application modernization

Modernize legacy systems without halting the business.

Strangler-fig migrations, replatforming, and rewrites — sized to risk and tied to clear business outcomes.

  • Strangler-fig, not big-bang
  • Mainframe, .NET, Java, PHP, COBOL
  • Business continuity guaranteed
  • Outcome-tied roadmaps
Overview

Modernize at the speed the business can absorb.

We modernize legacy software in incremental waves — each one shipping a measurable improvement. Architecture decisions, risk management, and change management run alongside engineering, not after it.

Business benefits

Outcomes you can measure on the balance sheet.

  • Lower TCO

    Cloud-native replacements cut licensing, infrastructure, and patching costs.

  • Reduced risk

    Incremental delivery lets you pause, adjust, or roll back — no all-or-nothing migrations.

  • Faster delivery

    Modern stacks and CI/CD turn quarterly releases into weekly ones.

  • Security uplift

    Modern identity, encryption, and patching baselines replace aging controls.

  • Talent appeal

    Engineers stay on stacks they can grow with.

  • AI readiness

    Modernized systems become the substrate for copilots, automation, and analytics.

Key capabilities

Everything you need from a senior delivery partner.

Strangler-fig

Carve off bounded contexts and replace them behind a stable façade — no big-bang rewrites.

Replatform

Lift-and-shift, containerize, or move to managed services with measurable cost savings.

Targeted rewrites

Greenfield rewrites where the codebase is beyond salvage — with a clear cutover plan.

Data migration

Zero-downtime data migrations with CDC, dual-write, and rollback strategies.

Risk management

Architecture decision records, threat models, and rollback plans on every wave.

Change management

Comms, training, and support so the business adopts the new system on day one.

Our process

A predictable path from discovery to operate.

  1. 01

    Assess

    Code, architecture, and dependency audit with business-aligned modernization options.

    • Audit
    • Options paper
  2. 02

    Plan

    Wave roadmap, target architecture, and risk register agreed with stakeholders.

    • Roadmap
    • Architecture
  3. 03

    Modernize

    Senior squads ship wave-by-wave with measurable outcomes per release.

    • Releases
    • KPIs
  4. 04

    Cutover

    Dual-running, data sync, and staged user migration with rollback ready.

    • Cutover plan
    • Rollback plan
  5. 05

    Stabilize

    Hypercare, defect triage, and quarterly modernization roadmap reviews.

    • Hypercare
    • Roadmap update
Technology stack

A modern toolbox, matched to your constraints.

From

  • COBOL
  • VB6
  • .NET Framework
  • Legacy Java
  • PHP 5
  • Delphi

To

  • Modern .NET
  • Java 21
  • Node.js
  • Python
  • Go

Cloud

  • AWS
  • Azure
  • GCP
  • Kubernetes

Data

  • PostgreSQL
  • MongoDB
  • Snowflake
  • BigQuery

Tooling

  • Strangler façade
  • CDC
  • Feature flags
Industries

Sectors where we ship this service every quarter.

Education

Learning platforms, admissions workflows, faculty tools, and student-facing portals.

Healthcare

Patient portals, clinical workflows, and decision support built around privacy and uptime.

Finance & FinTech

Core banking, payments, KYC, risk, and embedded finance with strict security baselines.

Retail & E-commerce

Storefronts, marketplaces, fulfillment integrations, and AI personalization.

Logistics

Ops dashboards, IoT telemetry, route optimization, and warehouse automation.

Enterprise & SaaS

Internal platforms, partner portals, and multi-tenant SaaS products at scale.

Why HIGAET

The combination most agencies can't credibly offer.

Senior squads, low churn

We staff with engineers trained through the HIGAET Academy talent pipeline — no rotating juniors.

Product-minded delivery

Squads obsess over user outcomes and KPIs, not just ticket throughput or hours billed.

Enterprise governance

NDAs, IP assignment, audit logs, and SOC 2-aligned controls on every engagement.

Full-stack capability

Strategy, design, engineering, AI, data, and SRE — one accountable team, not a chain of vendors.

AI in the DNA

Every project considers where intelligent automation creates leverage for users and operators.

Skin in the game

We co-build with select partners, sharing both delivery risk and long-term upside.

FAQ

Questions enterprise buyers usually ask.

Don't see your question? Send it through and the right engineer will reply.

Ask the team

Start a project

Tell us about your legacy application modernization initiative.

Share a few details and we'll come back within one business day with a recommended team shape, scope, and next steps.

HIGAET Technologies

Modernize legacy — with HIGAET, without the drama.

Tell us about the system. We'll respond with an audit and wave plan.