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External Software Maintenance: Legacy Code Rescue

We recover stalled software projects, with errors or without support. Specialists in stabilising and modernising your business technology.

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Inheriting software with bugs or no documentation is one of the biggest operational risks for a company. As software development specialists, we help companies regain control of their technology.

In today's market, many companies are technically "held hostage": their previous vendor is unresponsive, the code is unmanageable or the platform suffers constant outages. External software maintenance and rescuing stalled projects is our specialty at ASD Solutions. To avoid reaching this point, legacy application modernisation and periodic security audits are key. We do not just fix bugs; we stabilise businesses.

Behind every project we rescue there is a frustrated team, postponed decisions and lost business opportunities. The fear of touching a fragile system blocks necessary improvements and ends up affecting end customers. Our goal in a rescue is to restore the organisation's confidence so it can continue to grow on a solid technological foundation, in addition to fixing the code.

Team of specialists in legacy software rescue and enterprise maintenance

Technical Audit: The first step of the rescue

Before writing a single line of code, we carry out a deep dive into what we call emergency software developer solutions:

Technical Debt Analysis

We identify obsolete code, unsupported libraries and patches that compromise system stability.

Vulnerability Scan

We look for critical security gaps that could expose your company's or your customers' data.

Why trust ASD with your software maintenance?

Software that is not maintained is an asset that depreciates every day. At ASD Solutions we act as a rapid response team. Our 'External Software Maintenance' methodology includes creating automated tests to ensure new changes do not break existing functionality, updating critical dependencies and cleaning up spaghetti code. Whatever technology your current system uses, we have the specialists to take over and ensure your platform is the engine of your growth, not a brake.

Progressive Refactoring

We do not stop your business. We clean up the code while the platform remains operational, ensuring a smooth transition to a modern system.

Documentation and Ownership

We give you full control. We document every process so you never have to depend on a single developer again.

Common mistakes when trying to rescue a project on your own

It is common, before turning to a specialised company, to try quick in-house solutions: changing developers without reviewing the architecture, applying patch upon patch or rewriting entire modules without a plan. These actions, although well-intentioned, often increase complexity and make subsequent rescue even harder.

Another common mistake is mixing technological migration, functional redesign and business changes in one move. At ASD Solutions we clearly separate each front: first we stabilise what already exists, then we define what makes sense to modernise and, finally, we tackle strategic evolution. This step-by-step approach reduces risk and gives you cost visibility at each phase.

Software rescue in your city

We work remotely from Madrid for clients across Spain. Contact us for an urgent system assessment.

Frequently Asked Questions about Software Rescue

How long does it take to rescue critical software in production?

It depends on the state of the system. For critical emergencies (system down), the first diagnosis and stabilisation is usually achieved in 24-72 hours. The definitive solution and modernisation plan are designed in the following weeks to avoid risking business continuity.

Is it possible to rescue software without documentation or access to source code?

Yes, although it is more complex. We work with reverse engineering, binary analysis and interviews with the team that used the system. In many cases we recover key functionality even without access to the original code.

What is the difference between software rescue and preventive maintenance?

Rescue is an emergency intervention when the system has already failed or is at imminent risk. Preventive maintenance is the ongoing plan that avoids reaching that situation. We always recommend moving to preventive maintenance after overcoming the crisis.

How much does a software rescue service cost?

The cost varies according to urgency and complexity. An emergency intervention to stabilise the system starts from €1,500. The subsequent full modernisation project is budgeted according to the scope once the actual state of the system has been diagnosed.

Is your software a time bomb?

Request the €190 technical audit (diagnosis in 72 h), which also reviews the state of your software and is credited if you hire us. We tell you if your system can be stabilised and how long it would take.

Request the technical audit
Ignacio José Álvarez-Sierra Diez

CEO & Fundador · ASD Solutions

I am Ignacio Álvarez-Sierra, founder of ASD Solutions. I have 8 years of experience building custom software for companies, focused on Go, Node.js, React and cloud-native architectures. Our own senior team works without outsourcing: you talk directly to the people who write the code.

React · TypeScript Go · Node.js · AWS 8 years of experience LinkedIn GitHub

Technical audit for €190

Diagnosis in 72h and full report in 5 days. Credited to your project if you hire us.

See our full process, pricing and technology stack:

Custom Software Development