AI-driven application modernization services

+27% to engineering velocity with Pragmatic AI approach

Accelerate adoption of new technologies, optimize maintenance costs, and receive better systems quality with our AI-enhanced software modernization services.

90+ enterprises build and modernize software products with N-iX

N-iX client Bosch
N-iX client Siemens
N-iX client ebay
N-iX client Inditex
N-iX client AutoScout24
N-iX client Credit Agricole
N-iX client TotalEnergies
N-iX client AVL
N-iX client Innovation Group
N-iX client Questrade
N-iX client First Student
N-iX client ZIM

AI-driven legacy modernization—proven before it scales

N-iX helps organizations modernize legacy software, applications, and data platforms using Pragmatic AI engineering and our proprietary APEX framework (Assess · Pilot · Expand · eXcel). Our approach to AI-driven modernization is based on evidence and documented metrics, so we scale AI workflows only after they show measurable results. N-iX application modernization services will help you to reduce technical debt, revamp outdated tech stacks, strengthen security, integrate modern tools, and gain a competitive edge.

With over 2,400 AI-augmented tech specialists and 24 years of experience, we cover the full software engineering lifecycle. Our expertise spans software architecture design, bespoke engineering, cloud, DevOps & SRE services, data analytics, AI and Machine Learning, embedded software and IoT, and more.

150+

completed modernization projects

40-80%

productivity increase with AI-augmented engineering

2-3x

faster PoC execution

350+

active certifications across Microsoft, AWS, Google Cloud, Palantir, and other tech partners

AI-driven application modernization services

  • Application modernization consulting

    • Audit of the current solution state
    • Modernization strategy development roadmap
    • Architecture advisory and governance
    • Centers of Excellence
    • GenAI adoption assessment and roadmap (APEX)
  • Architecture modernization

  • Engineering modernization

    • Application re-engineering

    • AI-accelerated refactoring and technical debt remediation via APEX
    • Cross-platform portability
    • Version roll-up
    • Application rationalization
  • Infrastructure modernization

    • On-prem to cloud/cloud to cloud migration
    • Infrastructure cost optimization
    • Cloud modernization
    • Containerization with Kubernetes or other tools
  • User experience upgrade

    • User flow revision
    • UI/UX modernization
    • Target audience expansion
    • Accessibility compliance
Market report

AI has accelerated development but not delivery timelines. Here's the framework that closes the gap.

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From 115% revenue growth to complete BSS transformation and beyond: Our clients’ success stories

Housing management leader cuts bugs reaching production 60% through AI-driven QA modernization

  • AI development services
Case study
Case study

115% revenue growth in healthcare with modernized digital solutions

  • Big Data
Case study
Case study

Stock photography platform achieves 2x faster performance with AWS migration

  • AWS Migration Services
Case study
Case study

Digital modernization streamlines day-to-day operations in finance

  • Software engineering services
Case study
Case study

Comprehensive Business Support System (BSS) transformation in telecom

  • Software engineering services
Case study
Case study

Streamlining operations in healthcare with data modernization and GCP migration

  • GCP migration services
Case study
Case study

Benefits of AI-enhanced software modernization

From the tech perspective:

  • Repaying technical debt
  • Adding 27% to engineering velocity, measured before/after on production code
  • Revamping UX and brand consistency across all channels
  • Strengthening security
  • Increasing agility and flexibility
  • Adopting modern tools and practices
  • Enhancing integration capabilities
  • Eliminating outdated code

From the business perspective:

  • Enhancing customer experience
  • Reaching 91% AI adoption at scale
  • Spending 95% less time on tasks by solving them with AI solutions
  • Setting for sustainable cost-saving in the long run
  • Complying with industry regulations
  • Improving scalability, predictability, and agility
  • Raising the competitive edge
  • Increasing overall productivity of people and systems
  • New tech capabilities

Turn AI-assisted modernization into measured velocity

Generic AI coding tools learn from clean, documented code. Legacy systems run on the opposite: undocumented dependencies, workarounds nobody wrote down. That mismatch is why teams roll out AI tools and see faster typing, not faster modernization. N-iX offers a different data-backed Pragmatic AI approach with our proprietary APEX framework.

What APEX engagement delivers

What our clients received

  • Workflow backlog: Around 12 prioritized workflow cards, ranked by effort versus impact, so you know what to modernize first
  • Modernization agents: Specialized bundle built for legacy migration, not general-purpose coding, applied during the pilot
  • 20% minimum gain required for further scaling: Proof comes before rollout, not after
  • Breakthrough story: Your first successful pilot packaged as a shareable case study with before/after data, ready for your board.

What our clients received

  • 27% higher team velocity (85 → 108.3 story points), measured before and after on production code
  • 60% fewer bugs reaching production on a housing management platform modernized with AI-driven QA
  • AI adoption up 78 points (13% → 91%) across teams, with governance in place

Modernize with AI for measured results

Speak to our experts

Legacy software modernization with N-iX: How it works

1

Assessment of your legacy software

  • Legacy software architecture review
  • Code quality review
  • Usage analysis
  • Cybersecurity assessment
  • Total cost of ownership (TCO) calculation
  • Risk assessment 
2

Selection of modernization model

  • Scope determination/revision
  • Budgeting
  • Proof of Concept
  • Plan development 
3

Software modernization

4

Post-modernization support

  • Collecting user feedback
  • Solution monitoring
  • Further improvements
  • On-demand software support 

What our clients say

N-iX client Bycyklen

Big advantage of working together with N-iX, is that we are very flexible in finding out the best possible way of achieving the goals.

Igor Terzi

CIO

Global provider of managed cloud services

I'm impressed with the quality of N-iX's deliverables and results. Their work is consistently good, we get the product we want out of it, and they deliver it on time.

Jared Jacobson

Senior Manager of Data Governance

N-iX client Schibsted

The professionalism from N-iX is unparalleled. They can always get the job done.

Steven Chilver

Product Manager at Schibsted Media Group

WorkWave

What surprised me was how far the APEX framework reached beyond engineering. By month four, our business analysts, our QA team, and our developers were all running AI workflows. That's what got us into the top 5% on GenAI adoption within the EQT Group. We're still maturing our AI lifecycle, but N-iX gave us a spec-driven way of working that the rest of the organisation could pick up.

Greg Svitak

Chief Software Architect

N-iX client Lebara

I think we work extremely well together with the N-iX. Reliable. In one word.

Lars Hoogweg

Head of Architecture and Exploration

Commercial Retail Company

We’re impressed with the value for money they provide.

Project Manager

N-iX client AgroVision

They are a brilliant combination of quality and speed!

Kevin Coorevits

Manager of Technical Teams

Tech partnerships and certifications

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Our technology leaders

Valentyn Kropov

Valentyn Kropov

Chief Technology Officer

Sergii Netesanyi

Sergii Netesanyi

Head of Solution Group

Yaroslav Mota

Yaroslav Mota

Head of Engineering Excellence Practice

Mariya Miroshyna

Mariya Miroshyna

Experience Design Lead

FAQ

Application modernization services include resource optimization that presupposes infrastructure upgrade, software optimization, automation, data management improvements, and more. By focusing on these areas during application modernization, organizations can significantly enhance their operational efficiency, reduce costs, and better meet the evolving demands of their business and its customers.

Modernizing legacy software can lead to significant benefits such as technical debt reduction, enhanced user experience, improved security, and increased agility. From a business perspective, it offers better customer experience, decreased time to market, cost savings, scalability, competitiveness, and productivity.

Yes, but only when the gains are measured, not assumed. Unstructured AI adoption often leads to marginal or difficult-to-prove improvements. N-iX uses its APEX framework to validate where AI can accelerate modernization, quantify the impact, and scale only the workflows that show measurable value.

We use AI in two ways for modernization projects. During assessment, APEX baselines your team's current workflows and pilots AI tools on production code to identify where technical debt remediation, refactoring, and re-engineering can realistically be accelerated. During execution, our GenAI R&D team applies generative AI directly to modernization deliverables, including PoC acceleration, code transformation experiments, and discovery-stage prototyping.

Common challenges include limited capacity for growth, high maintenance costs, security vulnerabilities, inefficiency, poor performance, and compatibility issues with new technologies. All that can be achieved by moving from old approaches to new best practices during legacy software modernization.

The software modernization process typically starts with an introductory call with your tech vendor in order for you to understand the complexities of your existing systems and identify critical areas that need attention.

Businesses can achieve cost reduction through application modernization by optimizing their IT infrastructure and reducing maintenance costs. Modernizing applications often involves moving to cloud-based services, which can significantly lower hardware and operational expenses. Additionally, streamlined processes and improved efficiency from updated systems can lead to further reductions in costs over time.

N-iX provides a comprehensive range of services tailored to meet both straightforward and highly complex business needs, ensuring future-proof solutions. Our expertise spans from basic system enhancements to sophisticated, full-scale digital transformations designed to adapt and thrive in an evolving technological landscape. This approach guarantees that our solutions not only address immediate requirements but also anticipate and prepare for future challenges and opportunities.

Contact us

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Trusted by

N-iX client Bosch
N-iX client Siemens
N-iX client ebay
N-iX client Inditex
N-iX client AutoScout24
N-iX client Credit Agricole
N-iX client TotalEnergies
N-iX client AVL
N-iX client Innovation Group
N-iX client Currencycloud
N-iX client Raisin
N-iX client Lebara

Our partners

N-iX partner AWS
N-iX partner Microsoft
N-iX partner Google
N-iX partner Snowflake
N-iX partner SAP
N-iX partner Palantir
N-iX partner Cursor

Compliance

ISO 27001
ISO 9001:2015
PSI
FSQS-NL