Talk about sustainability in tech, and most people will picture the obvious — massive server farms, cooling towers, and solar panels on data centers. Fair enough. But almost nobody talks about the software running inside those racks.
That’s the hidden cost. Every background service, every poorly written query, every bit of unnecessary processing is pulling electricity somewhere. And messy code? It multiplies the waste.
For companies moving millions of transactions, this isn’t just about “being green.” It’s about money, performance, and user experience. A bloated codebase costs more to run, slows everything down, and yes, leaves a bigger carbon footprint.
Here’s the thing:
The Green Software Foundation estimates enterprise apps may be wasting up to 30% of their energy budget through inefficiency alone. Imagine paying for a third more cloud just to run code that could have been written smarter.
Scaling bad code is like pouring water into a leaking bucket. Fix the holes first. Check your complexity. Replace quadratic solutions with log-linear ones. Cache results where possible. Stream data instead of loading it all at once.
For AI workloads, don’t ignore pruning or quantization. One client cut inference costs almost in half without losing model accuracy. All by slimming the model instead of buying more compute.
Nobody loves digging into old code. But that’s where the waste hides. Outdated packages, forgotten dependencies, huge processes triggered for tiny tasks.
We’ve seen teams free up gigabytes of memory just by auditing dependencies and removing the ones nobody actually uses anymore. It’s the digital equivalent of cleaning out your garage.
The frontend runs on user devices, but don’t ignore the load it creates. Oversized images, bloated JavaScript, messy CSS — all of it means longer processing, higher device energy use, and annoyed users.
Switch to formats like WebP or AVIF, trim your scripts, and enable caching. Even dark mode matters: on OLED screens, it can cut device energy by around 30%. Multiply that across millions of users, and the savings are real.
Autoscaling helps, but there’s more. Some providers now publish data on carbon intensity by region. If you’ve got flexibility, run workloads in cleaner regions.
And don’t forget geography. Storing data closer to users doesn’t just cut latency. It reduces the wasted energy of long-haul transfers.
Your CI/CD might be greener with a few tweaks. Do you really need a full rebuild every time? Incremental builds save time and cycles.
Some teams now schedule non-critical jobs at times when renewable energy is more available. It’s a detail, but small choices add up when multiplied across thousands of builds.
This is familiar to us. In nearly every modernization project, we find the same story: the business wants to move fast, but the codebase is dragging behind. Builds take longer, cloud bills creep up, and the carbon impact grows right alongside.
Once you strip away the bloat — smarter algorithms, cleaner dependencies, tuned pipelines — the whole system gets lighter. Apps run faster, bills drop, emissions shrink.
That’s the work we do across our offices in London, Kyiv, Lisbon, and Cairo: helping companies grow without carrying around unnecessary weight.
Can you actually measure the carbon cost of software?
You can. Tools like GreenFrame or CodeCarbon give you execution-level data, and you can match that with your cloud metrics. It’s not perfect, but it’s real enough to act on.
Is optimization worth the developer hours?
Yes. Every optimization you make saves money, improves speed, and ticks ESG boxes. The return shows up sooner than people expect.
Would outsourcing this help?
It usually does. External teams with experience in green software can clean up years of tech debt while your own devs keep shipping.


