About us
A founder-led ecommerce growth agency. We own growth end to end for consumer brands, across their own site and their marketplaces, to one profit number.
Another channel, another tool, another tactic that worked for somebody else. The work has always been finding the few things that genuinely move profit, and having the discipline to cut the rest.
We did that for years as PSi DigiTech, and before that as a one-person consultancy. In 2026 we renamed the agency after the thing we had actually been doing all along.
Vaseem Shaikh
Founder
Ecommerce breaks in a lot of places. Compliance, advertising, logistics, cash tied up in stock, and sometimes the plan itself. Most of the job is working out which one is actually costing you this quarter, and having the nerve to say what to stop doing about the rest.
For five of those years I was also researching AI and machine learning at IIM Ahmedabad, running client accounts alongside it, until I left in 2019 to run the agency full time. The research shaped how I set targets, per SKU rather than one number across a channel. The rest I learned on the accounts.
01
Revenue is easy to grow at a loss. Every target we set starts from what each product actually earns you.
02
Tracking, listings, checkout, compliance. Scaling spend on a broken foundation only makes the losses bigger.
03
Your site and your marketplaces serve one customer. They should be run to one plan, not two.
04
Anyone can add another campaign. Knowing what to remove is harder, and it is usually where the money is.
Ten years doing every channel by hand, before there was an agency at all.
2008
Started learning SEO
2009
First Amazon account
2010
First PPC client
2011
First Shopify store built
2017
First major client, still with us today
2018
Founded PSi DigiTech
2019
Left IIM Ahmedabad to run the agency full time
2026
Renamed Signal Over Noise
Founder-led, with specialists in each discipline. Every account has one person accountable for the result, and the person who runs your audit stays on your account.
We are deliberately small. It is what lets the founder stay involved in the work rather than only the pitch.
Agency credentials
Recognition and platform partnerships from our work across ecommerce and digital marketing.
Premier Partner
Business Partner
Partner
Partner
Partner
Credentials displayed under PSi DigiTech, our previous agency brand. View the original site ↗
What actually changed on the platforms this week, what it costs you, and what to do about it. No roundups.
Start a project
Tell us about your brand. You get a written audit of your advertising, site and marketplace position, ranked by what each fix is worth.
No charge. About five working days. We reply within one working day, Monday to Friday, 9:00 to 18:00 UK.
London, UK
71–75 Shelton Street
Covent Garden, London, WC2H 9JQ
Ahmedabad, India
DTC & ECOMMERCE GROWTH AGENCY
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