All-in-one guide to software reengineering

February 29, 2024
All-in-one guide to software reengineering

Today, when the world of technology evolves, customer expectations skyrocket, and new opportunities unfold, not every organization is prepared for radical transformation.  High dependency on legacy tech often makes a complete overhaul in operations and mindset seem impossible. However, modernization does not always require drastic changes. Even when dealing with legacy systems, businesses can explore various paths to enable rapid scalability, performance, and seamless user experiences. 

Software reengineering comes as a viable option. Our latest blog post dives into the approach, uncovering its benefits, potential challenges, and solutions.

Hidden issues of using legacy tech

Most legacy businesses stick to the “if it ain’t broke, don’t fix it” approach. As long as the system supports core processes and serves customers well enough (not offering unparalleled experience, though), it ensures stability short term. Challenges arise when it becomes evident that competition rises, and your system cannot stand up to the customer demand. Furthermore, persisting with the current system might bring hidden costs due to possible inefficiencies and security risks. It could also mean missing out on chances for growth and innovation. Let's explore these issues further.

  1. Untimely tech upgrades. Older systems often accumulate technical debt and limit the ability to use modern solutions. This hinders overall performance and may result in time-consuming processes.
  1. Security oversights. Aging systems may require significant investments in security, exposing the business to data breaches and potential financial losses.
  1. Lagging workflows. Outdated interfaces and processes can lead to decreased productivity, hindering the ability to streamline operations and work more efficiently.
  1. High maintenance costs. Such systems incur higher upkeep expenses due to a lack of skilled support, leading to prolonged downtimes, delayed project timelines, lower staff productivity, and revenue loss.
  1. Integration issues. It is challenging to link legacy systems with new technologies that may improve internal communication and partner collaboration. This particularly impacts project management, data sharing, and real-time information access.
  1. Analytics blind spots. Data-driven decisions are crucial, but older systems, lacking advanced analytics, force business leaders to use spreadsheets and rely on human input. This approach leads to missed opportunities and data blind spots.
  1. Growth limitation. Legacy systems often struggle to scale, limiting opportunities for expansion and competitiveness.
  1. Expertise loss risk. The lack of experts familiar with legacy tech results in increased hiring costs, knowledge transfer expenses, and the risk of potential disruptions.
  1. Decreased customer experience. The inability to invest in better customer experiences cause reduced satisfaction, higher churn, and compromised brand reputation.

Software reengineering as a prompt response

Among legacy modernization approaches software reengineering stands as a low-risk and cost-efficient. Why so? The method helps improve software quality, maintainability, and performance without a complete overhaul. By identifying and prioritizing immediate targets for improvement, organizations can channel resources efficiently, minimizing disruptions and change risks. The process involves the following:

  • Assessing software and reviewing documentation, understanding specifications and business requirements
  • Updating for compatibility with new software/hardware platforms, enhancing the architecture, and implementing new features
  • Removing obsolete code to streamline and declutter the system
  • Reusing existing components, such as code modules, frameworks, APIs, etc., improving the quality to align with evolving business requirements.
All-in-one guide to software reengineering - What businesses seek in software reengineering

Companies opt for software reengineering for several reasons:

  • Perform a cost-benefit analysis, identifying areas for improvement
  • Provide a roadmap for sustainable maintenance in the long run
  • Mitigate risks associated with security issues, system disruptions, and critical data loss
  • Improve adaptability with modern technologies for scalability, seamless integrations, and regulatory compliance
  • Enhance user experience with new functionality and updated UI
More on legacy modernization: 6 common approaches
Read the blog post

Reengineering tactics: which and when to use

The reengineering process is a complex task requiring a thorough understanding of the underlying workflows, business objectives, and time and budget constraints.

By analyzing existing infrastructure and identifying risks and opportunities, you can select a reengineering approach or a combination of those.

Reverse engineering

The purpose: Uncover the underlying structure and functionality of existing software to understand its design and implementation principles.

The approach helps assess change feasibility, predict how those enhancements would affect the system, identify reusable components for efficient integrations, and shorten learning curves for engineering teams. 

Code restructuring and modularization

The purpose: Enhance software maintainability and scalability by reorganizing code into more manageable and modular components.

The tactic helps enhance code readability, facilitate testing, and improve software performance. The process also makes legacy apps more reliable and scalable, simplifying changes and code reuse.

Reverse engineering
Uncovering existing software's structure and functionality
  • Understand change feasibility
  • Predict system enhancements
  • Shorten learning curves
  • Identify reusable components
Code restructuring and modularization
Enhancing software maintainability and scalability
  • Improve code readability
  • Facilitate testing
  • Enhance software performance
  • Stabilize applications
  • Simplify changes and code reuse
Forward engineering
Developing new software based on design specifications
  • Translate business requirements
  • Create a tailored software solution
All-in-one guide to software reengineering -Software reengineering tactics

Forward engineering

The purpose: Develop software based on design specifications, translating new business requirements and conceptual models into executable code.

As a result, you get a robust and tailored software solution designed to meet specific criteria and objectives.

Benefits of software reengineering

Software reengineering offers businesses multiple advantages, from reducing costs on redundant processes and eliminating disruptive risks to unlocking possibilities for growth and advanced client service.

Performance and scalability

Your apps seamlessly handle increased workloads and user demands

Modernization and innovation

Stay ahead of the curve, adopt modern tech to improve operations, drive growth, and attract tech-savvy users

Satisfied customers

Resolve issues swiftly, improve functionality, and provide a seamless UI for increased customer loyalty and positive reviews

Ability to meet market demands

Implement new features, adjusting your solution to user feedback and market trends

Business expansion

Diversify product portfolio and expand market reach, accommodating increasing user numbers and data volumes without compromising performance

Reduced costs

Identify and eliminate inefficiencies, optimize processes, reduce manual effort, and improve resource allocation

Data-driven decisions

Employ advanced analytics and reporting capabilities, reaping valuable insights for the right strategic choices

Reliability and security

Build trust with users, safeguard sensitive data, and avoid potential financial and reputational losses stemming from security lapses

Risks and solutions

Stakeholder engagement

Inadequate involvement or feedback from stakeholders may lead to wrong expectations. Implement regular communication channels, conduct stakeholder workshops, and run decision-making processes together to ensure continuous engagement.

Effort vs. cost estimation

The lack of documentation and prior reengineering expertise make estimation complex with incorrect time, effort, ROI, and cost predictions. Employ experienced engineering teams familiar with legacy tech that can use historical data for estimation, conduct a thorough analysis, and incorporate risk mitigation plans.


Sometimes reengineered systems may perform not the way they should. This happens due to selecting an improper engineering approach and technology incompatibility. Consult with experts to map your requirements and tailor a reengineering plan. After that, conduct testing, monitoring, and benchmarking at every stage to reveal bottlenecks and proactively improve them.

The lack of tech expertise can lead to misguided decisions. Engage experts, analyze systems, get a clear understanding of your needs, and document implementations to bridge the knowledge gap and make informed choices.

The TYMIQ way: reengineering workflow and best practices

At TYMIQ, we possess rare technology expertise, understanding the intricacies of legacy systems and efficiently blending them with modern tech knowledge. Our ability to translate unique business requirements ensures the most efficient solutions for each case, ultimately enhancing and improving your apps.

Here is a sample reengineering workflow.

1. Planning
  • Defining the key factors driving the need for modernization
  • Formulating clear objectives and requirements for the target app
  • Planning out the required investments
  • Assess the expected KPIs and analyze project feasibility
  • Assembling the reengineering team, assigning essential roles and responsibilities
  • Developing a comprehensive roadmap outlining key milestones and timelines
2. Development
  • Analyzing and extracting source code
  • Collecting documentation, historical data, and in-house knowledge
  • Apply reverse engineering techniques to understand the existing application thoroughly
  • Document the application anew, ensuring clarity and comprehensiveness
  • Introduce necessary enhancements, such as restructuring, code modularization, and improvements
  • Redesigning the database structure to modern standards
  • Testing the app to address any issues
  • Implement the app functionality and evaluate the performance
3. Post-production
  • Conducting ongoing monitoring to ensure optimal performance
  • Establishing a maintenance plan for addressing any issues
  • Running training sessions for an in-house team

With years of experience in reengineering legacy systems, we know how to deliver value. Let’s talk to define your transformation strategy.

Plan out your reengineering strategy: low risks, maximum benefits

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