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Guifré Ballester

Guifré Ballester · Senior Technical Product Manager

I build API & AI-agent products for developers.

PM who codes — I shipped SE Ranking's remote MCP server (now ~30% of signups) and built its Data API business line from zero. I use Claude Code daily for the PM work.

Barcelona, Spain

Now: building API & AI-agent products at SE Ranking — most recently the remote MCP server and the AI Search (AEO) API. Try the live MCP →

Product

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10 projects shown

MCP Driving 30% of Signups

Jan 2026

I shipped the first MCP server in the SEO space, then pivoted it local→remote and subscription→pay-as-you-go. Now ~30% of signups.

apiai-ml0-to-1gtmpmf

AI Shift in SEO

Nov 2025

Launched an AI Search (AEO) data product as SEO shifted to LLMs. ~20% of customers drove ~50% of new revenue in its first 2 months.

apiai-ml0-to-1gtmb2b

Repricing to Create a Business

Aug 2025

Raised the base price ~50% and restructured into self-serve tiers + usage add-ons — turning a cheap API into a real business.

apipmfb2bdatavalidation

B2B SEO API: Ship in Under 2 Months

Jun 2025

Shipped SE Ranking's enterprise Data API from scratch in under 2 months — customer-led, self-service trials, POC→paid.

api0-to-1gtmb2b

Fortune 500 Architecture Migration

Jun 2024

Led Eventbrite's monorepo→polyrepo shift: 2→40 teams (90% adoption) with independent, unblocked deployments.

platformdevexcloudb2b

Repo Provisioning in 30 Minutes

Jan 2024

Built a self-service repo-provisioning platform at Eventbrite: 2 weeks → 30 min (99% faster) for 150 engineers.

platformdevexcloud0-to-1

60% More Releases

Aug 2023

Implemented ArgoCD/Flux GitOps at Getir. Deploys went hours → 5 min and releases +60%.

platformdevexcloud

Implemented IDP for Faster Onboarding

Mar 2023

Built Getir's internal developer platform on Backstage from scratch. 200 engineers; new-hire onboarding 3x faster (60→20 days).

platformdevex0-to-1

Twilio Video Needed a New Mindset for Growth

Apr 2022

Twilio's Video business unit had stalled post-pandemic. I helped build Twilio Live — a dedicated tool for the new streaming market — to reignite growth and keep our biggest customers engaged (~$200K MRR).

apib2b0-to-1gtmvalidation

Opened the US Market Post-Pandemic

May 2021

Led Stayforlong's launch into the US as travel reopened — the new market reached 20% of company revenue within 2 months.

gtm0-to-1validationb2b