B2C Growth &
Performance Marketing Leader

I build growth engines from zero in complex markets. 8 years across performance and growth marketing, with the last 5 dedicated to B2C mobile apps in APAC. At Shikho, built the full growth stack from scratch: $420K paid driving $3M revenue, 35K+ paid subscribers, LTV:CAC from 1.5x to 4.2x. Previously ran $16M paid portfolios at ADA Global across 4 APAC markets. Builder by default, bias for action.

Shah Mahmud, B2C Growth and Performance Marketing Leader
ADA Global Shikho Robi Axiata Nagad Airtel
Forbes Asia 100 to Watch 2x DRUM Awards Gold and Silver BBF Awards

Currently leading growth across 2 products at Shikho (500K MAU · 3.4M registered learners cumulative · Series A). Previously at ADA Global (Axiata Digital) managing $16M in annual media across 4 APAC markets. Forbes Asia 100 to Watch.

$16M

Peak Annual Budget Managed

1M+

Users Acquired Annually

4

APAC Markets

50+

Growth Experiments Documented

Featured Work

Browse all work →

Growth Engine, From Zero

$3M revenue · $420K paid spend (7X) · 500K MAU · 35K+ paid · 300K reg/quarter

Building a Growth Engine From Zero in the World's Most Price-Sensitive Market

Two years at Shikho, Bangladesh's leading edtech (Forbes Asia 100 to Watch). Built the growth function from scratch into a $3M annual revenue engine on $420K paid spend (7X return). 500K MAU. 35K+ paid subscribers. 300K+ registrations every quarter. Eight pillars: paid acquisition, lifecycle, measurement, search, partnerships, cross-functional retention, honest kill decisions, and the AI tools that run it.

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Performance Marketing at Scale

$16M annual budget · 21-person team · 4 APAC markets

Multi-Market Performance Marketing at Enterprise Scale

Managing large-scale paid acquisition for telecom and fintech giants across South and Southeast Asia: $16M annually, 2,000+ campaigns per month, and a team built from scratch.

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Cross-Functional Retention

262 live responses · 5 teams · 17K monthly false-churn exposed · 3 fixes in pipeline

A Live Cross-Functional Improvement Loop: Monthly Churn Feedback to Product Pipeline

A monthly recurring system at Shikho. Paid retargeting captures live feedback from users who just left. Cross-functional review with 5 teams converts each signal into named product, ops, brand, CX, and growth actions. First full cycle in March 2026: 262 coded responses, 10 action items, 3 product fixes now in active pipeline, 21% false-exit discovery exposing 17K monthly over-count.

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Whether you're building a growth team and looking for a leader, scaling a product and need fractional support, or exploring how to optimize your acquisition engine, the first step is the same conversation.

How I Work
"Precision is a synonym that goes well with Shahriar. While 10 eyes missed a significant detail, only his 1 eye could catch that. The way he pushes his team for perfection: it's remarkable."

- Durdana Nur B., Former Colleague, ADA Global

Let's explore working together.