Freelancers using SQLite in Madrid

Freelancers using SQLite in MadridFreelancers using SQLite in Madrid

Projects People

Berckan Guerrero

maxMadrid, Spain

Founders' Tech Partner | Full-Stack AI Engineer | 14 yrs exp

$25k+: Earned

8x: Hired

5.0: Rating

19: Followers

Founders' Tech Partner | Full-Stack AI Engineer | 14 yrs exp

Cover image for Pulso: Prospect Intelligence Dashboard

Pulso: Prospect Intelligence Dashboard

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Cover image for NurvAI: Website Redesign & Development

NurvAI: Website Redesign & Development

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Cover image for Raven: AI Knowledge Management Platform

Raven: AI Knowledge Management Platform

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Cover image for PartSpace: AI-Powered B2B Procurement Platform

PartSpace: AI-Powered B2B Procurement Platform

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Nikita Beznosikov

Full-Stack Engineer · SaaS · Node.js / React / TypeScript

5.0: Rating

3: Followers

Full-Stack Engineer · SaaS · Node.js / React / TypeScript

Cover image for AI-powered language flashcard app for

AI-powered language flashcard app for iOS. Users describe any theme ("Coffee and tea", "Driving exam") and the app instantly generates a custom deck via Google Gemini. Features a progressive 3-level vocabulary system (beginner → intermediate → advanced) with mastery-based unlocking, SM-2/FSRS spaced repetition with Again/Hard/Good/Easy ratings, offline-first SQLite storage, bilingual audio examples, smart daily reminders, and a freemium model (RevenueCat) gating unlimited decks and advanced levels. Built with React Native (Expo), TypeScript, SQLite, Supabase, Google Gemini, RevenueCat.

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Cover image for Pay-per-use video testimonial SaaS. Businesses

Pay-per-use video testimonial SaaS. Businesses collect text reviews for free and pay per video testimonial via a credit system — no subscriptions. Features include browser-based video recording, embeddable widget with masonry layout, Stripe payments, credit metering via Cloudflare Stream analytics, signed video URLs for hotlink protection, and a dashboard for approving/rejecting submissions. Built with Next.js, Supabase (PostgreSQL), Cloudflare Stream, Stripe.

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Cover image for Shopify app for EU Digital

Shopify app for EU Digital Product Passport (DPP) compliance. Merchants can create and manage product passports with QR codes, print labels, bulk edit via CSV, and use AI to auto-fill passport fields from existing product data. Built with Remix, React, Node.js, Prisma, and Shopify GraphQL API.

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Cover image for Built and owned the entire

Built and owned the entire technical stack for a US e-commerce platform generating $1M/mo revenue. Developed custom Next.js storefront, checkout, and CMS admin panel from scratch. Integrated Stripe, Braintree, PayPal, Apple Pay, and Google Pay. Implemented fraud protection, automated chargeback handling via Visa CDRN, server-side tracking (FB CAPI, Google Ads), and BigQuery analytics pipeline.

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