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I'm Cristian Selar, a product and growth-focused founder who bootstrapped and scaled an AI study assistant to $50K ARR in six months while studying in Greece. I own product and growth end to end, from user research and UX design to frontend development and analytics. I thrive on turning insights into value and building teams that move fast to solve real user problems. I pivoted a note-sharing product into an AI tutoring platform and led data-driven acquisitions, redesigning the product with modern tech (Next.js, TypeScript, Tailwind) to improve conversion, retention, and revenue. I have hands-on experience training and evaluating LLMs, prompt engineering, and working with remote, multi-disciplinary teams to ship impactful AI-powered products.…I'm Cristian Selar, a product and growth-focused founder who bootstrapped and scaled an AI study assistant to $50K ARR in six months while studying in Greece. I own product and growth end to end, from user research and UX design to frontend development and analytics. I thrive on turning insights into value and building teams that move fast to solve real user problems. I pivoted a note-sharing product into an AI tutoring platform and led data-driven acquisitions, redesigning the product with modern tech (Next.js, TypeScript, Tailwind) to improve conversion, retention, and revenue. I have hands-on experience training and evaluating LLMs, prompt engineering, and working with remote, multi-disciplinary teams to ship impactful AI-powered products.

Cristian Selar

Product Designer, Growth Marketer, Marketing Strategist, +2

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I'm Cristian Selar, a product and growth-focused founder who bootstrapped and scaled an AI study assistant to $50K ARR in six months while studying in Greece. I own product and growth end to end, from user research and UX design to frontend development and analytics. I thrive on turning insights into value and building teams that move fast to solve real user problems. I pivoted a note-sharing product into an AI tutoring platform and led data-driven acquisitions, redesigning the product with modern tech (Next.js, TypeScript, Tailwind) to improve conversion, retention, and revenue. I have hands-on experience training and evaluating LLMs, prompt engineering, and working with remote, multi-disciplinary teams to ship impactful AI-powered products.…I'm Cristian Selar, a product and growth-focused founder who bootstrapped and scaled an AI study assistant to $50K ARR in six months while studying in Greece. I own product and growth end to end, from user research and UX design to frontend development and analytics. I thrive on turning insights into value and building teams that move fast to solve real user problems. I pivoted a note-sharing product into an AI tutoring platform and led data-driven acquisitions, redesigning the product with modern tech (Next.js, TypeScript, Tailwind) to improve conversion, retention, and revenue. I have hands-on experience training and evaluating LLMs, prompt engineering, and working with remote, multi-disciplinary teams to ship impactful AI-powered products.

Available to hire

I’m Cristian Selar, a product and growth-focused founder who bootstrapped and scaled an AI study assistant to $50K ARR in six months while studying in Greece. I own product and growth end to end, from user research and UX design to frontend development and analytics. I thrive on turning insights into value and building teams that move fast to solve real user problems.

I pivoted a note-sharing product into an AI tutoring platform and led data-driven acquisitions, redesigning the product with modern tech (Next.js, TypeScript, Tailwind) to improve conversion, retention, and revenue. I have hands-on experience training and evaluating LLMs, prompt engineering, and working with remote, multi-disciplinary teams to ship impactful AI-powered products.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Greek, Modern

Fluent

English

Fluent

Work Experience

Co-founder, Product & Growth at Tutie AI

February 1, 2024 - Present

Bootstrapped and scaled an AI study assistant to $50K ARR in six months; led the pivot from a note-sharing product to an AI tutoring platform; owned end-to-end product responsibilities including user research, UX design (Figma), frontend (React → Next.js), analytics, and iteration; redesigned and rebuilt the product with Next.js, TypeScript, Tailwind, and shadcn/ui to optimize conversions, retention, and revenue; drove user acquisition through data-driven campaigns and a QR-sticker offline effort plus UGC content campaigns.

AI Trainer / Prompt Engineer at DataAnnotation

January 1, 2024 - January 1, 2026

Contributed to the training and evaluation of large language models used by leading AI organizations; evaluated model outputs, identified failure modes, and provided structured feedback to improve quality and alignment; worked on tasks related to frontend, design, and code generation; developed expertise in prompt engineering and evaluation rubrics.

Sales at BAT

January 1, 2022 - January 1, 2023

Early sales experience with strong communication skills and customer intuition; contributed to revenue growth through direct customer interaction.

Sales at Pop-Air

January 1, 2022 - January 1, 2023

Early sales experience with focus on customer engagement and revenue generation; developed customer intuition and communication skills.