
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 →
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MCP Driving 30% of Signups
Jan 2026I shipped the first MCP server in the SEO space, then pivoted it local→remote and subscription→pay-as-you-go. Now ~30% of signups.
AI Shift in SEO
Nov 2025Launched an AI Search (AEO) data product as SEO shifted to LLMs. ~20% of customers drove ~50% of new revenue in its first 2 months.
Repricing to Create a Business
Aug 2025Raised the base price ~50% and restructured into self-serve tiers + usage add-ons — turning a cheap API into a real business.
B2B SEO API: Ship in Under 2 Months
Jun 2025Shipped SE Ranking's enterprise Data API from scratch in under 2 months — customer-led, self-service trials, POC→paid.
Fortune 500 Architecture Migration
Jun 2024Led Eventbrite's monorepo→polyrepo shift: 2→40 teams (90% adoption) with independent, unblocked deployments.
Repo Provisioning in 30 Minutes
Jan 2024Built a self-service repo-provisioning platform at Eventbrite: 2 weeks → 30 min (99% faster) for 150 engineers.
60% More Releases
Aug 2023Implemented ArgoCD/Flux GitOps at Getir. Deploys went hours → 5 min and releases +60%.
Implemented IDP for Faster Onboarding
Mar 2023Built Getir's internal developer platform on Backstage from scratch. 200 engineers; new-hire onboarding 3x faster (60→20 days).
Twilio Video Needed a New Mindset for Growth
Apr 2022Twilio'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).
Opened the US Market Post-Pandemic
May 2021Led Stayforlong's launch into the US as travel reopened — the new market reached 20% of company revenue within 2 months.