Application re-engineering

Application re-engineering : revitalize software, reduce risk, and extend system life

tkxel re-engineers applications to improve performance, reduce maintenance cost, and deliver new capabilities aligned with business goals.

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Our clients

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Three challenges that make applications costly and fragile

43%

of users report frustration with slow, buggy, or inconsistent application experiences impacting adoption and satisfaction.

68%

of legacy apps underperform because outdated code limits feature delivery and causes frequent outages.

55%

of IT spend goes to patching and maintaining applications instead of driving innovation.

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Key benefits of re-engineered applications from tkxel

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Improved performance & reliability

Refactoring and optimization reduce load times, errors, and downtime, enhancing user experience and operational stability.

Lower maintenance costs

Modernized architecture, clean code, and automated pipelines reduce long-term support and technical debt.

Scalable & adaptable systems

Applications designed for modularity, cloud, and integration enable growth without complete rewrites.

Enhanced business value

Re-engineered applications support new features, integrations, and analytics, turning software into a strategic asset.

Sub-services of application re-engineering

Application audit & roadmap

Application audit & roadmap

Detailed evaluation and phased plan for re-engineering aligned to business outcomes.

Code modernization & refactoring

Code modernization & refactoring

Clean, maintainable code with automated testing and version control.

Architecture redesign

Architecture redesign

Monolith to microservices, cloud-native replatforming, or modular designs.

API integration & connectivity

API integration & connectivity

Secure and standardized APIs for internal and external system connectivity.

Data migration & pipeline improvement

Data migration & pipeline improvement

Ensures data integrity and accessible reporting throughout modernization.

Testing & observability

Testing & observability

Automated regression, performance tests, and dashboards for operational insight.

gain

Business impact — R · O · S perspective

Revenue: faster feature delivery

Improved code and architecture enable teams to launch new features and product improvements quickly.

Operations: reduced cost & effort

Modernized apps lower maintenance overhead, patching, and firefighting.

Scale: applications grow with business

Cloud and modular architecture support scaling users, transactions, and features without bottlenecks.

Risk: stability & compliance

Refactored code, monitoring, and testing reduce outages, errors, and compliance risks.

Strategy: extend software life

Applications evolve with business strategy, avoiding premature rewrites or replacement.

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Success Stories in Spotlight

All Case Studies

Developed a fully integrated enterprise mobility solution for top IP litigation firm

Legal ServicesEngineering

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"tkxel built a docketing app with an intuitive UI, helping attorneys track 10,000+ patent systems."

Robert K Burger

"tkxel built a docketing app with an intuitive UI, helping attorneys track 10,000+ patent systems."

Robert K Burger

COO, Sterne Kessler

Elevated Nokia’s User Experience and Reach

Telecom

case study

Emmanuel Neilz

Emmanuel Neilz

CTO, Nokia

Streamlined ABB's operations with Salesforce and Azure integration

Machinery ManufacturingSalesforce Implementation

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"tkxel shared our vision right from the get go, and helped us achieve the unthinkable. Their team was highly professional."

Pam Chitwood

"tkxel shared our vision right from the get go, and helped us achieve the unthinkable. Their team was highly professional."

Pam Chitwood

Product Manager, ABB

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How tkxel transforms applications — six core services

Application re-engineering

Application assessment & audit

tkxel conducts a full evaluation of architecture, dependencies, and code quality. We identify pain points, performance bottlenecks, and technical debt to create a roadmap for modernization and measurable outcomes.
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Application re-engineering

Code refactoring & optimization

We clean and restructure code for maintainability, efficiency, and scalability. Automated tests and version control ensure safe improvements without introducing new defects.
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Application re-engineering

Architecture redesign & modernization

We re-architect monoliths or aging systems into modular, microservice-ready, or cloud-native platforms—supporting integration, reliability, and future enhancements.
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Application re-engineering

Integration & API enablement

tkxel decouples tightly bound systems and builds APIs for seamless connectivity with internal tools, third-party platforms, and emerging technologies.
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Application re-engineering

Data migration & ETL improvement

We modernize data handling, ensuring data integrity and accessibility during application updates, migrations, or platform changes.
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Application re-engineering

Testing, monitoring & lifecycle support

Automated testing, observability dashboards, and operational runbooks maintain performance, track issues, and ensure continuous delivery post-reengineering.
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Application re-engineering

Legacy System Modernization

Our legacy system modernization service transforms outdated systems into modern, agile applications, ensuring they align with current and future business practices.
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Application re-engineering

Testing and Quality Assurance

Our rigorous testing and quality assurance processes ensure that your re-engineered applications function flawlessly, meeting all performance and security standards.
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Application re-engineering

Performance Tuning and Optimization

We fine-tune and optimize your applications for improved speed, efficiency, and resource utilization, ensuring peak performance at all times.
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Application re-engineering

User Interface and User Experience Redesign

We redesign the user interface and user experience of applications, focusing on usability, accessibility, and modern design to enhance user engagement.
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Application re-engineering

Platform Migration

We specialize in transitioning applications from outdated platforms to more modern, efficient, and secure environments, ensuring your business stays ahead of technological advancements.
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Application re-engineering

Code Refactoring

Our service includes refining and optimizing your codebase, enhancing its performance, maintainability, and scalability to meet current and future demands.
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Our re-engineering process — steps, deliverables & duration

01

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01 Assess

We evaluate architecture, code quality, performance, and risks to define re-engineering priorities.
Deliverables: Technical assessment, risk matrix
Duration: 2–3 weeks

02 Plan

A phased re-engineering roadmap is created to minimize disruption and maximize impact.
Deliverables: Re-engineering plan, milestones
Duration: 1–2 weeks

03 Refactor

Code and components are incrementally refactored to improve structure and reliability.
Deliverables: Refactored modules, test coverage
Duration: 6–10 weeks

04 Optimize

Performance and data layers are tuned to support higher loads and efficiency.
Deliverables: Performance benchmarks, optimization report
Duration: Parallel with refactor

05 Validate

Systems are tested thoroughly to ensure stability, security, and functional correctness.
Deliverables: QA results, validation sign-off
Duration: 2–3 weeks

06 Evolve

Post-delivery improvements ensure the application continues to meet business demands.
Deliverables: Enhancement backlog, optimization guidance
Duration: Ongoing

Our re-engineering process — steps, deliverables & duration

step 1

Assess

We evaluate architecture, code quality, performance, and risks to define re-engineering priorities.
Deliverables: Technical assessment, risk matrix
Duration: 2–3 weeks

step 2

Plan

A phased re-engineering roadmap is created to minimize disruption and maximize impact.
Deliverables: Re-engineering plan, milestones
Duration: 1–2 weeks

step 3

Refactor

Code and components are incrementally refactored to improve structure and reliability.
Deliverables: Refactored modules, test coverage
Duration: 6–10 weeks

step 4

Optimize

Performance and data layers are tuned to support higher loads and efficiency.
Deliverables: Performance benchmarks, optimization report
Duration: Parallel with refactor

step 5

Validate

Systems are tested thoroughly to ensure stability, security, and functional correctness.
Deliverables: QA results, validation sign-off
Duration: 2–3 weeks

step 6

Evolve

Post-delivery improvements ensure the application continues to meet business demands.
Deliverables: Enhancement backlog, optimization guidance
Duration: Ongoing

Make your applications ready for what’s next

Re-engineering is about progress, not disruption. tkxel helps global teams transform existing applications into systems that support growth.

Talk to a re-engineering expert

We’ve been recognized by the best, year after year

AMERICA’S FASTEST GROWING COMPANY

AMERICA’S FASTEST GROWING COMPANY

TOP 100 INSPIRING WORKPLACES 2025

TOP 100 INSPIRING WORKPLACES 2025

FORBES COACHES COUNCIL

FORBES COACHES COUNCIL

FINANCIAL TIMES

FINANCIAL TIMES

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ISO 27001 CERTIFIED

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CMMI DEV 3 CERTIFIED

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Ready to get started?

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“tkxel completely transformed the way we manage our customer relationships. Their customized CRM system streamlined our processes and improved customer satisfaction. We highly recommend their services to any business looking for real results.”

Nick Drogo

Nick Drogo

Global Director IT, Knowles

“They helped us build a docketing app with an intuitive user interface, allowing our attorneys to track over 10,000 U.S. and international patent systems.”

Robert K Burger

Robert K Burger

COO, Sterne Kessler

“Tkxel has proven beyond par that they excel not just in building and integrating with our team but building at a level that is at par with any US development team. Working with Tkxel is one of the best decisions we have made.”

Umair Bashir

Umair Bashir

CTO, Replenium

“tkxel shared our vision right from the get go, and helped us achieve the unthinkable through perseverance and a thorough attention to detail. Their team was highly professional and possessed a firm grasp on technicalities, a combination that is hard to find in the industry.”

Pam Chitwood

Pam Chitwood

Product Manager, ABB

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“tkxel completely transformed the way we manage our customer relationships. Their customized CRM system streamlined our processes and improved customer satisfaction. We highly recommend their services to any business looking for real results.”

Nick Drogo

Nick Drogo

Global Director IT, Knowles

“They helped us build a docketing app with an intuitive user interface, allowing our attorneys to track over 10,000 U.S. and international patent systems.”

Robert K Burger

Robert K Burger

COO, Sterne Kessler

“Tkxel has proven beyond par that they excel not just in building and integrating with our team but building at a level that is at par with any US development team. Working with Tkxel is one of the best decisions we have made.”

Umair Bashir

Umair Bashir

CTO, Replenium

“tkxel shared our vision right from the get go, and helped us achieve the unthinkable through perseverance and a thorough attention to detail. Their team was highly professional and possessed a firm grasp on technicalities, a combination that is hard to find in the industry.”

Pam Chitwood

Pam Chitwood

Product Manager, ABB

Frequently asked questions

How is re-engineering different from rebuilding? faq faq

Re-engineering improves existing systems by restructuring and optimizing them, while preserving valuable business logic.

Can re-engineering be done without downtime? faq faq

Yes. Our phased approach minimizes disruption and keeps systems operational throughout the process.

Is application re-engineering suitable for older systems? faq faq

Absolutely. Older systems often benefit the most when modernized thoughtfully.

How long does application re-engineering take? faq faq

Most projects deliver measurable improvements within 8–12 weeks, depending on scope and complexity.

Will re-engineering reduce future development costs? faq faq

Yes. Cleaner systems are easier and cheaper to maintain and extend over time.

Do you support globally distributed teams? faq faq

Yes. tkxel works with mixed geographies using structured delivery and clear communication.

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