Not all code is created equal

When code starts thinking green, emissions drop and performance soars. This is how smart tools, cleaner logic, and ESG-aware developers at Tech Mahindra are turning every line of code into a step toward net-zero. Sustainability, compiled

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For most developers, “clean code” is about bug-free logic and functional elegance. But for Sandeep Chandna, Chief Sustainability Officer at Tech Mahindra, clean code has a deeper meaning—code that consumes less, emits less, and works smarter for the planet.

Chandna takes us behind the scenes of how one of India’s tech giants is weaving sustainability into software development—not just through policy, but through tools, metrics, and measurable results. This is not a story about greenwashing. It’s about green building—at the source code level.

We’re not just coding to deliver, we're coding to decarbonize

Chandna doesn’t hesitate. “We are leveraging advanced coding practices and frameworks to optimize energy consumption and promote sustainability in our software development processes.”

At the heart of this effort is Green CodeRefiner, a proprietary tool built using Azure OpenAl Service. Think of it as a sustainability-aware code optimizer—it transforms existing code into energy-efficient code without compromising functionality.

Some of its tangible impacts:

• Improves green impact scores by 20-40%

• Reduces Scope 2 emissions

• Integrates directly into DevOps workflows

• Boosts developer productivity by embedding energy intelligence at the coding level

This isn’t just clever tooling. It’s Tech Mahindra’s way of making sustainability a built-in feature of every application they deliver.

You can’t fix what you can’t see

The biggest obstacle? Visibility.