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Revamp your core: modernize your legacy software to leverage modern technologies, streamline operations, fuel business growth, and stay relevant in the market.
NIX empowers businesses to thrive by modernizing their legacy software, ensuring it is future-ready and easier to manage. With over 30 years of cross-industry expertise, we provide professional legacy application modernization services to strengthen your technical core, unlock new opportunities, and automate workflows.
Catering to SMBs and enterprises alike, we help clients capitalize on new functionalities, boost performance, and safeguard data with the latest security measures.
At NIX, we ensure your transition to modern architecture is seamless and doesn’t disrupt your daily business operations.
Slow feature deployment or bug fixes are impacting agility
Inefficient legacy management and technical debt are draining resources
Performance bottlenecks and slow applications are hindering productivity
Long time to market is delaying app releases
High infrastructure costs are impacting profitability
Security vulnerabilities pose a business risk
Poor user experience hindering engagement and customer satisfaction
Choose when you need a fast, low-risk cloud migration for stable, well-functioning systems
Use this for moderate performance and security improvements without changing the core application architecture
Fix performance bottlenecks and technical debt by optimizing existing application code
Transform inflexible monolithic systems, unlocking scalability and integrating with modern systems
Select when outdated technologies, legacy UX, and poor performance fail to align with current business requirements and require a complete overhaul
Adopt this if SaaS or COTS solutions offer higher cost efficiency than maintaining custom code
Monolith to modular or microservices: Improve scalability and deployment speed by transitioning to a modernized architecture. We conduct technical assessments to determine if a modular monolith or microservices best fit your needs, then manage the full lifecycle from compliance to health monitoring.
API development: Bridge your legacy software to modern systems with custom API development, management, and monitoring. We ensure seamless connectivity with third-party systems, prioritizing secure data flow and cost-efficient digital growth.
Re-architecture: Future-proof your infrastructure by shifting to modular or microservice-based architecture. This transition eliminates integration struggles and cloud compatibility challenges while significantly reducing hosting costs and enabling effortless scaling.
Re-engineering: Turn your legacy app into a modern solution while preserving core business logic. NIX experts carefully restructure code and databases to align with your current goals, ensuring high performance and a modernized technical foundation.
Cloud migration: Accelerate your transition to cloud, multi-cloud, or hybrid environments. We execute migrations of all scales to leading cloud providers such as AWS, GCP, and Azure, using cloud-native tools to maximize efficiency, reduce costs, and ensure long-term scalability.
Cloud app modernization: Maximize the value of your cloud assets by aligning them with modern standards. From component upgrades to full architectural refactoring, we deliver future-proof, adaptable solutions.
DevOps integration: Build or enhance your IT infrastructure for superior reliability and performance. We implement automation, CI/CD, and IaC to eliminate technical weaknesses and ensure continuous operational improvement.
Re-platforming: Strategically transition your legacy apps to modern hardware or cloud environments without a full rebuild. This optimization unlocks platform-specific benefits like elastic scalability, improved UX, and robust resilience.
AI integration: Embed intelligence where it delivers the highest strategic impact. We integrate predictive analytics for planning, ML for real-time insights, and AI agents for automated customer experiences. Using LLMs and NLP, we build intuitive interfaces and extract value from unstructured data.
Data transfer: Minimize security risks by preserving data integrity and reducing downtime during migration. We provide expert ETL planning with robust encryption and automated validation, ensuring a seamless and secure transition for critical business information.
Modernization support: Maintain peak performance with 24/7 monitoring and expert DevOps oversight. We handle proactive troubleshooting and ongoing optimization to guarantee business continuity, secure scaling, and a consistent, high-quality user experience for your modernized software.
Software audit: Identify high-impact growth opportunities with an end-to-end evaluation of your architecture, performance, and infrastructure. We combine data-driven insights with industry trends to deliver a strategic transformation roadmap tailored to your specific goals.
Code refactoring: Boost agility and simplify maintenance with targeted refactoring services. We reduce legacy code complexity while preserving core functionality, making it easier and more cost-effective to integrate new features and scale.
Tech debt management: Accelerate time-to-market by shifting your focus from maintenance to innovation. We provide architectural refinement and performance optimization that enhance reliability and competitive positioning.
UI/UX enhancement: Increase user engagement and market reach with design and accessibility audits. We deliver a prioritized roadmap to ensure your interface is modern, intuitive, and compliant with global accessibility standards.
Version upgrade: Bolster security and performance by transitioning to the latest stable technology stacks. Our engineers ensure data protection and operational continuity throughout the entire modernization process.
Security modernization: Protect your business with robust cybersecurity frameworks and automated defenses. We identify gaps and ensure compliance with stringent regulations, such as the EU’s Digital Operational Resilience Act (DORA).
Best for: Full-scale digital shifts or legacy systems requiring a total structural overhaul. We provide a cross-functional team that fully covers the entire project life cycle.
Key deliverable: A fully modernized, future-ready infrastructure with optimized performance and updated security.
Best for: Accelerating timelines or filling specific technical gaps in your internal department with an expert turnkey team—whether acting as an independent unit or integrated into your existing staff.
Key deliverable: A seamless integration of experts who bring forth ideas and solutions to optimize workflows and expedite project delivery.
Best for: Evaluating technical debt and creating a legacy software modernization roadmap by experienced consultants.
Key deliverable: A comprehensive audit of architecture, performance, and IT infrastructure, and a strategic advancement plan aligned with your digital maturity.
From strategy and planning to market-ready solutions, continuous support, enhancements, and promotion.
Your business isn’t static, and neither are we—our adaptable approach ensures your software keeps pace with your needs.
Decades-honed expertise across various domains and thousands of projects translates into solutions that hit the mark.
We listen first, build second—exploring every angle and uncovering all potential solutions to pinpoint the best-fitting one.
Our time-tested delivery process drives results, fosters team alignment via consistent communication, and remains adaptable to new challenges.
Our strategic alliances with AWS, Microsoft, and GCP translate into better technical solutions and conditions for your business.
We take delivery ownership of every project, driving measurable impact beyond just execution.
Strategic agility, rapid escalations, and hands-on leadership—your project moves forward without bottlenecks.
Ensure your systems adapt seamlessly to market shifts and emerging technologies. By prioritizing legacy application modernization, you can improve time to market and deployment frequency, allowing your business to pivot at the speed of innovation.
Replace end-of-life vulnerabilities with proactive, enterprise-grade protection. Expert legacy modernization improves your mean time to detect (MTTD) and ensures your system is architected for compliance audit readiness across major regulatory standards (e.g., GDPR, HIPAA, DORA).
Reclaim your IT budget by reducing maintenance overhead and hardware dependencies. Effective legacy system modernization significantly lowers your total cost of ownership (TCO) and shifts your spend from maintenance to innovation.
Enable faster response times and rock-solid system stability even during peak processing loads. Performance-focused legacy software modernization improves average latency (ms) and your Apdex score for a smoother technical operation.
Handle traffic spikes with minimum downtime. Cloud-native legacy application modernization enables your infrastructure to scale resources in real time, optimizing uptime and lowering your infrastructure spend per user.
Replace antiquated interfaces with high-performance workflows that drive productivity. Modernizing your legacy software increases user adoption rates and slashes task completion times.
Integrate predictive models into existing workflows to extract insights from historical data and deliver high-value, automated customer experiences.
Transform legacy core processes with GenAI to enable hyper-personalized user journeys and automated content generation across text, media, and code.
Deploy autonomous agents to manage complex API integrations and multi-step workflows, optimizing static legacy operations through AI-driven automation.
Link aging assets to modern interfaces for real-time tracking and remote control, unlocking secure data streams from previously siloed hardware.
Delegate repetitive manual tasks to software bots to eliminate human error and free your team for high-impact strategic initiatives.
Convert raw data trapped in legacy databases into interactive dashboards and actionable growth opportunities for faster, well-informed decision making.
Extend your core ERP functionality to mobile platforms to streamline workflows and provide real-time management capabilities anywhere.
1
We perform a deep-dive audit of your current architecture, code quality, and security to identify bottlenecks and technical debt.
Deliverables: Comprehensive technical audit package and risk assessment report.
2
Our experts determine the optimal legacy modernization path and align the technical approach with your long-term business objectives.
Deliverables: Target architecture options and a comparative modernization strategy.
3
We define the project scope, budget, and timeline while validating critical components to ensure a smooth transition.
Deliverables: Phased modernization roadmap and proof of concept (PoC) for core features (if needed).
4
NIX team executes the migration and refactoring through agile sprints, ensuring continuous testing and operational continuity.
Deliverables: Fully modernized production environment and migration/testing documentation.
5
We ensure a smooth final deployment followed by a stabilization period to monitor performance. Our team then facilitates a comprehensive handover to your staff or provides ongoing maintenance to ensure long-term system health.
Deliverables: Deployment report, training materials for internal teams, and post-launch support plan.
We really care about project success. At the end of the day, happy clients watching how their application is making the end user’s experience and life better are the things that matter.
Healthcare Compliance Solution
Healthcare
High Load and Real-time Location Tracker
Social Networks and Communications
Electronics
ERP Platform for Streamlined Business Processes
Internet Services and Computer Software
Human Resources
AWS-powered Development Platform for Clinical Trials Management
Workforce Management Platform to Streamline Outstaffing
FaceMe Platform
Retail and E-commerce
“CMS team are my go-to partners for web dev”
I’ve been working with these guys for years now – particularly their CMS team. The relationship has been very positive, and they continue to do great work for me.
I first hired NIX around 2008 to re-build a website that was built (poorly) by another agency. NIX solved that problem and has helped me build and launch multiple products since then. Roman and his CMS team are my go-to partners for web dev.
Jeremy Reither
Consultant & Advisor at DemandSide
Matthew Brown
VP of Engineering at Elsevier
“Extremely detailed, professional, attentive”
We’ve been working with NIX for over a year now and have nothing but good things to say about them and their talented pool of developers, staff members, and executives. They are extremely detailed, professional, attentive, and deliver top-quality work within the time estimates that they provide. What else can you ask for? I highly recommend NIX for all tech-related projects.
Buzz Sharifi
Account Manager at TransGrade, CRM
“Quality of delivered work is outstanding”
Our company worked more than 5 years in total with NIX. Communication was always very clear and direct. Being a remote company, wasting time in communication is horrible, luckily with NIX, we experienced no delay or misunderstanding.
Quality of delivered work is outstanding, all tasks prior to delivery were tested in detail, and bugs or mistakes were virtually non-existent.
Christian Rohner
Project Manager at Information Products AG
Jeremy Barron
Senior Director of Engineering at Premier
“It is hard to impress me, and NIX kept me happy”
There is no recommendation that is more powerful. NIX’s expert team built a new system that increased potential customer traffic and improved performance. Their transparent workflow allowed for consistent communication and quick correction of problems when they arose. They also adjusted their processes to mitigate time-difference concerns.
Craig Burris
Director of Operations at CarSoup
Jason Scalvini
Senior VP of Technology
“You have done the work perfectly”
I want to say thank you for the excellent, highly professional work, for your passion, and your time even on holidays and weekends. Your attitude ultimately led to outstanding results. We are satisfied with the result we’ve achieved, but we need to keep working, and actively use every opportunity to make it better. You have done the work perfectly and the application, which you created in such a short time, turned out to be very functional and cool.
Ilya Kottel
VP R&D at HumanEyes
“The team is experienced and professional”
We cooperate really well with them, and they make adjustments so we don’t have any complaints. The original project was successful, so they’ve extended the partnership. Headed by a knowledgeable project lead, the team is experienced and professional. NIX delivered everything on time and was always in contact with their partner. Offering a superior customer experience, they’re recommended.
Noam Shalit
COO at SafeRide Technologies Ltd
“NIX is doing an amazing job”
NIX team contributed a lot to the process improvements for code deployment practices. So not only we write clean/stable code now but also, we are able to deploy it a lot more successfully and faster. We have a better strategy for our branch cutting and code repositories. It takes much less time to deploy code now with a higher level of stability. NIX team also contributed their ideas and views on how we can break up work among team members more effectively.
Steve Berardelli
Sr. Director of Engineering for MindTap
“World-class development”
NIX are great communicators for native English speakers, they work well with our timezone, they are highly organized, and most importantly they build beautiful software. Our team cast a wide net and was highly selective when we decided to search for a software development partner, and NIX has exceeded our expectations since we chose to work with them. If you are looking for a team that performs world-class development well below the average U.S. cost, NIX is a perfect partner.
Moody Heard
Co-Founder at Buildforce
“Delivered high-quality products”
NIX delivered high-quality products that work flawlessly and have boosted revenue partner schools, who have successfully used the digital platform to fundraise. The team’s organized workflow and programming skills help them seamlessly fit into the client’s company as a whole.
Mike Ortner
President at Ortner Enterprises DBA North Two Five
“Quickly and professionally”
I have used NIX for 3 different companies over the past 3 years that I have been CTO of. Projects have spanned a wide variety of technology stacks. NIX has come through each time with the right project manager, quality assurance, business analyst, DevOps, and developers. They quickly and professionally get up to speed with our current processes and seamlessly merge with any professional environment.
Mark DeJarnatt
Chief Technology Officer at Sparkle Stories LLC
“Delivering high-quality code”
With NIX, I have broken some of my own rules of team composition with respect to the ratio of FTE and 3rd party engineers. I have some teams that are more than 50% NIX because the code coverage, quality, and velocity coming out from the NIX developers are very good. Delivering high quality code in a predictable manner has built trust and confidence with my management/full-time employees.
Eric Spear
SVP of Engineering at Cengage
“Fast and responsive”
The team was fast, responsive, and took the time to walk through every step.
The engineers are helpful and responsive.
Eve Epstein
CEO/Founder at SoleVenture, Inc.
“Attentive and listening”
I enjoyed working with the NIX team because they are so attentive, listening, and questioning decisions about the development specifications. The questions absolutely make me think and make the product better.
David Stutzman
President of Conspectus, Inc
“Staff are highly professional and personable”
Team NIX brings strong technical and product development management experience. Expertise and resources are brought on and off seamlessly as required. Staff are highly professional, personable, and an asset when interfacing with our partners and customers.
Dave Kochalko
Co-Founder & CEO at ARTiFACTS
“NIX’s work has been excellent.”
NIX’s work has been excellent. They’re technically knowledgeable and have expertise in many areas. Moreover, they’re diligent, meet deadlines, and communicate effectively. They’re also flexible, bring in the right personnel when needed, and are enjoyable to work with.
Kevin Lee
Co-Founder
“I also found them to be extremely good at documenting the steps and laying out the costs for each part of the project.”
NIX delivered a functional application that was tested by 15 industry individuals. NIX was extremely good at documenting the development steps and laying out the costs of each project stage. NIX’s project manager was professional, set up weekly meetings, and delivered work on time.
Norman Thiem
Owner, N2 Plus
“NIX consistently met milestones according to the project timeline.”
NIX’s work has resulted in a 50% decrease in infrastructure costs, a 50% increase in deployment speed, a 25% decrease in technical debt, and a 15% increase in CSAT scores. The team is timely, communicative, adaptive, and responsive, and their commitment and collaboration skills are outstanding.
Ariel Orbach
Co-Founder & CTO
“They’re reliable and have great communication skills”
NIX has delivered exactly what was needed in a timely manner, leaving the client completely pleased with the collaboration. The team boasts excellent communication skills and has proven to be a reliable partner. The partners communicate via email, messaging apps, and virtual meetings.
Anonymous
CTO, Real Estate Firm
“They were fully dedicated in time and heart to the project.”
The app had no bugs and required minimal support calls from end customers. The client was also happy with the number of users on the app. NIX led professional project management, offered status updates, and communicated effectively. Their dedication made them feel like part of the client’s team.
Founder & HOP, Fitness Space Rental Platform
“Terrific project manager – good communication and understanding of our app and objectives.”
NIX’s work has been met with positive acclaim. The team is efficient, hardworking, and on top of the ball. Customers can expect a team that gets the job done.
CTO, Color My Life, Inc
“They often provide helpful advice on areas that are starting to impact us as we grow.”
Thanks to the contributions of the NIX team, the client has been able to deliver large financial software projects on time and within budget. The client appreciates the team’s dedicated and professional staff and their advice on areas starting to impact their growth.
Department Head, Fignum Limited
01/
Modernization investments and timelines typically depend on the scope of updates, the scale of the application, the chosen legacy modernization strategy, the complexity of new capabilities, and the testing required for business continuity. First, we perform a detailed assessment to estimate everything from development and infrastructure to data migration and team training. After that, you receive a clear, phased roadmap—ranging from a few weeks for UI enhancements to over a year for full architectural rebuilds.
02/
We minimize downtime through a phased rollout that keeps your business alive during legacy application modernization. By running synchronized parallel environments, we shift traffic incrementally. Our process includes rigorous pre-migration validation and automated roll-back protocols to ensure every update is stable before it reaches your users.
03/
After the discovery phase, you receive a complete strategic foundation for your legacy modernization project. Key deliverables include:
04/
To determine the most efficient legacy modernization path, we select the approach based on individual criteria—a rigorous evaluation of your specific business objectives, risk tolerance, budget, and timeline. Our experts also analyze whether your existing tech stack can support modern integrations or if technical debt necessitates a more radical change.
This process results in a tailored modernization matrix that maps each part of your application to the most cost-effective strategy to ensure maximum ROI with minimal risk.
05/
Legacy system modernization involves navigating deep-rooted technical and organizational risks. To manage these, our team applies a proactive mitigation framework:
06/
At NIX, we ensure security by embedding a security-by-design framework that replaces vulnerabilities in your legacy software with a robust environment built on zero trust principles. This approach hardens your systems at every layer by implementing strict identity management, micro-segmentation, and data encryption.
By integrating DevSecOps protocols, we automate security and compliance checks directly within the development pipeline to catch risks before they reach production. To guarantee business continuity, we run parallel, synchronized systems and conduct regular audits, ensuring the new environment meets all regulatory requirements and is fully operational before the final transition.
07/
Yes, once we achieve data and architecture stabilization, we can expertly embed AI to transform your modernized systems into intelligent platforms. By leveraging your newly structured data, we move beyond simple maintenance to deliver advanced capabilities such as:
NIX is a software engineering company in the USA that offers enterprises digital transformation consulting services to embrace the future and growth.
Unlock growth with our mobile app development services—create secure, scalable apps that enhance mobility, user experience, and customer loyalty.
At NIX we provide top-notch cloud consulting services empower clients to adopt cloud and gain agility, cost-efficiency and security of their infrastructure.
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