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How to do a software rewrite
16 min read
About this service
Build scalable, maintainable software with our experienced engineering teams. We deliver high-quality code and best practices that help your product succeed.
Go to serviceBackend engineering
Backends have a way of becoming a bottleneck. What starts as a few slow queries or a quick fix that never got revisited can quietly grow into something that holds everything back. We've helped companies tackle all kinds of challenges, from big balls of mud to overengineered microservice architectures.
We figure out what's slowing you down, put the right monitoring in place so you catch problems before your users do, and build architecture and infrastructure that scales with documentation that actually makes sense.
Untangling messy systems and building something solid in their place is what gets us going. Security gaps, infrastructure struggling under growth, overengineered services. There's no silver bullet, but there is a way of working that delivers results.
We focus on delivering measurable improvements across four key areas that matter most to your product and team.

We optimise your backend properly with architecture that fits, data you can trust, and infrastructure that performs. No over-engineering, just solid foundations.
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Databases should work hard, not just hold data. We get the schemas right, nail the indexing, and tune queries so your app stays fast as it grows.
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Shipping with confidence isn't optional. We build a testing strategy that makes sense and implement it across unit, integration, and end-to-end tests. No more crossing fingers on deploy.
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Security is baked in from the start, not treated as an afterthought. We implement industry best practices so your systems stay protected without becoming a nightmare to maintain.
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Our approach
“By getting in the trenches alongside your engineers, we build something solid and leave your team stronger than we found them.”
These problems are incredibly common. The good news? They're all solvable, without starting from scratch.

“Our frontend is a mess and nobody wants to touch it.”

“We’re stuck on an old framework version and can’t upgrade.”

“Over the past months, MinersAI has grown significantly, with the platform now being used by some of the largest government organisations and mining companies worldwide. This rapid progress reflects th…”
Thomas-Louis de Lophem, CEO at MinersAI

“My developers are not working together.”

“Our AI prototype works in a notebook but not in production.”

“I think what I also really valued about the collaboration was transparency and knowledge transfer. It needs to be a good fit with the company and the phase that the company is in.”
Thomas Vanhumbeeck, Cofounder & CEO at FixForm

“Our best engineers are drowning.”

“Releasing a new version takes an entire afternoon.”
We work with companies that want to get their backend right. Here are examples of how our approach translated into real results.
You will not see companies like Amazon among our past clients. You will, however, see the names that will soon rock the SaaS world because we helped them predict risks and avoid failure.
“Madewithlove truly has your back as a trustable business and tech partner. They are a great combination of integrity, people and technical skills that allow you to move your software application project forward at any level.”

David Macfarlan
CEO, GearJot
“Our internal team of developers matured a lot during the time we worked with madewithlove. Their focus on knowledge-sharing is going to help us even when madewithlove is no longer on board.”

Steven Debrauwere
CEO, Contractify
“If you can tell VCs, ‘we are working with madewithlove’ they already know it will be quality because they have also used madewithlove to do, for example, audits.”

Thomas Vanhumbeeck
Cofounder & CEO, FixForm
FROM 180+ SAAS AUDITS
1 in 4 SaaS teams give all engineers production access
Deploy rights, database credentials, secrets. Everyone has the keys.
The access problem nobody talks aboutFROM 180+ SAAS AUDITS
2 in 3 SaaS teams skip code review
One engineer merges what another wrote. No second set of eyes.
The value of code reviewOur latest thinking on backend engineering, performance optimisation, and building better systems.
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Whether your backend is slowing you down, holding back new features, or just needs a refresh. We're ready to dig in.
Everything you need to know about working with our backend engineers.
We bring deep expertise across the modern backend ecosystem including Node.js, Python, Go, Java, Ruby, PHP, and more. We adapt to your existing stack rather than imposing our preferences.
Absolutely. We specialise in brownfield development, improving what already exists. We excel at refactoring legacy codebases, untangling complex systems, and modernising architectures while your application continues running in production.
We start by profiling your application to identify actual bottlenecks. Then we implement targeted optimisations like database query optimisation, caching strategies, API response optimisation, and proper architecture patterns. We focus on measurable improvements, not theoretical perfection.
Yes. We help establish, maintain, and scale API architectures that ensure consistency and reliability across your services. We work with REST, GraphQL, gRPC, and other modern API patterns.
Security is built into our development process. We follow security best practices, implement proper authentication and authorisation, use secure coding patterns, and conduct security reviews to ensure your backend is protected.
We establish comprehensive testing strategies using tools like Jest, pytest, Go testing, JUnit, and more. We implement unit tests, integration tests, API tests, and end-to-end tests to catch issues before they reach production.
Knowledge transfer is core to our approach. Through pair programming, collaborative code reviews, and comprehensive documentation, we ensure your team gains the skills and confidence to continue building after we're gone.
Most engagements last between 3 and 12 months depending on the scope. We stay long enough to make meaningful improvements and ensure your team is confident to continue independently.
We're technology-agnostic, focusing on solving your problems rather than pushing our preferred tools. We specialise in improving existing codebases rather than pushing for rewrites. And we plan our exit from day one, where success means your team's independence, not dependence.