Fabricio Tramontano Pirini
Product Engineer
Brazil (UTC -3)
Product engineer with nearly 9 years in React, Next.js, and TypeScript. Builds foundational systems that solve real user problems: design tokens powering 6 brand variants, shared component libraries adopted by 3 teams, and A/B experimentation infrastructure running 2 to 8 experiments/month as the program matured. Writes success metrics before building ("this should move [metric] from X to Y"), measures post-deploy, and iterates. Applies product discovery habits daily: one-sentence problem statements before starting work, metric targets in every PR description.
Technical Skills
Languages & Runtimes: TypeScript, JavaScript, Python, Node.js
Frameworks & UI: React, Next.js, Django, Tailwind CSS, Radix UI, React Native
Product & Analytics: Segment, PostHog, GrowthBook, LaunchDarkly, Unleash, StatSig
Testing & Quality: Playwright, Vitest, Jest, React Testing Library, Storybook
Tooling & DevOps: Docker, CI/CD (GitHub Actions), GraphQL, Figma
Professional Experience
Kraken
Contractor - Product Engineer
Brazil (Remote)
Nov. 2024 - Present
- Set up Segment tracking for an in-app support portal across web and 3 React Native apps. Measured ticket deflection rate to validate the feature's value and identify iteration opportunities.
- Built a Figma-to-code design token pipeline powering 3 brand lines (6 variants). Replaced days of manual work per brand with automated updates.
- Built 15+ dynamic financial data tables accessed ~50x per session by power users. Tracked usage patterns to prioritize the 20% of features driving 80% of value.
Norsk Gjenvinning
Lead Software Engineer & Tech Lead
Norway (Remote)
Sep. 2023 - Sep. 2024
- Built a shared component library adopted by 3 product teams. Measured ~25% reduction in feature cycle time, tracked usage via Storybook to prioritize investment.
- Set up GA and SEO tooling from scratch for Norwegian client properties. Tracked conversion funnels and user flows to identify bottlenecks and prioritize fixes.
- Managed 5 engineers across 2 time zones. Team used GA and custom dashboards to validate that features solved the problems they were built for.
Lead Product Engineer
Sep. 2022 - Aug. 2023
- Led WCAG 2.0 AA compliance across 70+ European companies. Prioritized fixes based on user impact and usage data.
- Mentored 3 junior engineers (two promoted within 18 months). Embedded product habits: success criteria before starting work, outcome reviews post-deploy.
Oda
Software Engineer
Norway
Aug. 2020 - Aug. 2022
- Built the company's first A/B experimentation program from scratch. Owned the platform (GrowthBook), ran 2 to 4 experiments/month, made go/no-go decisions based on data.
- Ran hero-removal experiment expecting higher conversion. It dropped. Killed the variant on data, not instinct.
- Shipped stripped onboarding flow with lead capture for out-of-coverage users. Conversion increased, measured via GrowthBook. Removed locale blockers so Finland and Germany launched without engineering changes.
Sportradar
Full Stack Engineer
Norway
Sept. 2018 - Aug. 2020
- Refactored web crawlers and scrapers into 5 independent microservices, cutting runtime by 120x and resource usage by 10x. Measured performance improvements to justify the migration.
- Migrated CI/CD from Jenkins to GitLab, reducing deploy failures by 85% through Docker containerization and pipeline redesign. Tracked deployment frequency and failure rate as metrics for engineering effectiveness.
Samsung R&D Center
Software Engineering Intern
Campinas, Brazil
Jan. 2017 - Jan. 2018
- Built a WCAG 2.0 AA Web Accessibility portal presented at 2 industry conferences. Created internal dashboards with Power BI to monitor compliance and prioritize fixes across properties.
Education
Universidade Federal de Itajuba - UNIFEI
Bachelor of Science in Computer Engineering
Itabira, Brazil
2011 - 2018
University of Toronto
Exchange Student, Electrical and Computer Engineering
Toronto, Canada
2013 - 2014
