Here are leading performance-marketing firms in Malaysia (strong at paid media, e‑commerce growth, lead generation and measurable ROI). Short note on each and source(s) so you can dig deeper.

1. Ampersand Advisory — Data‑led performance & enterprise ROI focus; award‑winning in Malaysia’s agency scene. (Newnormz.com.my)
2. DoMedia Asia — Performance & mobile specialist with strong short‑form video and e‑commerce funnels across SEA. (favikon.com)
3. Newnormz — Malaysian performance agency focused on e‑commerce/F&B with measurable ROAS campaigns. (Newnormz.com.my)
4. Elixus Agency — Full‑funnel growth & ad‑tech execution for DTC and B2B clients (part of Ematic group). (Newnormz.com.my)
5. NP Digital (Malaysia) — Global performance/SEO leader (Neil Patel network) offering omnichannel paid + organic growth. (Newnormz.com.my)
6. PMAX — eCommerce performance specialist focused on conversion optimisation and robust ad operations. (Newnormz.com.my)
7. One Search Pro — Local full‑service digital & performance agency (PPC, social ads, ROAS optimization) with many case studies. (onesearchpro.my)
8. Oblique — Growth branding + ROI‑driven acquisition for B2C/e‑commerce brands. (Newnormz.com.my)
9. Kingdom / HOD (Hakuhodo-owned) — Creative + performance capabilities; strong social/video performance credentials in Malaysia/SEA. (blackrevo.com)
10. ADA / Catcha Digital / iMedia teams — Regional data‑driven media/ performance capabilities (large media groups with programmatic/performance offerings). (en.wikipedia.org)

How to pick the right partner (quick checklist)

• Primary goal: e‑commerce scale (look for conversion + catalog ads + CRO experience) vs lead gen (look for landing‑page + call tracking).
• Proof: request recent ROAS/CPA case studies in your vertical and verification (dashboard screenshots or references).
• Tech & reporting: ask which BI/dashboard, attribution model and tracking they use (server‑side, GA4, MMP for apps).
• Budget fit: some firms specialize in enterprise budgets while others focus on SMBs—match accordingly.
• Trial: run a short test campaign (4–8 weeks) with KPIs and a clear reporting cadence.

If you’d like, I can:

• Narrow this to agencies that specialize in your industry (e‑commerce, fintech, B2B, etc.).
• Pull contact pages and recent case studies for 3–5 of these agencies.

Which of those would you like next?