Freelancers using React in SpainFreelancers using React in Spain
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Tomi Scattini's avatar
Tomi Scattini
Granada, Spain
Full Stack Developer
$5k+
Earned
4x
Hired
5.0
Rating
102
Followers
TOP_INDEPENDENT

Top

Full Stack Developer
Cover image for Personal Portfolio
Personal Portfolio
0
51
Cover image for Miguel Bruñó Portfolio
Miguel Bruñó Portfolio
1
38
Cover image for Gabriela Polanco Ferreyra Portfolio
Gabriela Polanco Ferreyra Portfolio
0
41
Cover image for InRange
InRange
0
41
React(4)
Two.Zero Agency's avatar
Two.Zero Agency
maxBarcelona, Spain
Certified FlutterFlow Expert Agency. TOP 1 Worldwide.
$100k+
Earned
16x
Hired
4.8
Rating
162
Followers
FLUTTERFLOW_EXPERT

Coach

FLUTTERFLOW_AGENCY_EXPERT

Agency

+1
Certified FlutterFlow Expert Agency. TOP 1 Worldwide.
Cover image for High-Fidelity Training-Tracker Prototype for Fast Run
High-Fidelity Training-Tracker Prototype for Fast Run
1
6
226
Cover image for Digital Agenda Platform for Therapy Sessions
Digital Agenda Platform for Therapy Sessions
0
11
Cover image for Invoice Email Automation for Flow and Finance Operations
Invoice Email Automation for Flow and Finance Operations
0
20
Cover image for Email-to-ERP Order Automation for ABAS-Based Operations
Email-to-ERP Order Automation for ABAS-Based Operations
0
15
React(1)
Marcel Stredak's avatar
Marcel Stredak
pro03730 Xàbia, Spain
Senior Full-Stack Architect & Strategic Product Lead
$10k+
Earned
3x
Hired
5.0
Rating
20
Followers
Senior Full-Stack Architect & Strategic Product Lead
Cover image for Domior: A Config-Driven Question Flow for Property Site
Domior: A Config-Driven Question Flow for Property Site
1
8
Cover image for Interactive Architectural Portfolio and System Simulator
Interactive Architectural Portfolio and System Simulator
1
25
Cover image for Self-hosted Multi-User SaaS with Logic Overrides
Self-hosted Multi-User SaaS with Logic Overrides
0
9
Cover image for n8n Workflow Optimization and Self-Hosted Migration
n8n Workflow Optimization and Self-Hosted Migration
1
10
React(3)
Alex Andrew's avatar
Alex Andrew
proBarcelona, Spain
AI Automation - UX/UI - QA - Web & 3D
$1k+
Earned
1x
Hired
5.0
Rating
14
Followers
AI Automation - UX/UI - QA - Web & 3D
Cover image for AI-Assisted Media Buying & Ad Automation
AI-Assisted Media Buying & Ad Automation
1
4
Cover image for SaaS Landing Page & Funnel — React/Next.js
SaaS Landing Page & Funnel — React/Next.js
0
3
Cover image for Full System: Funnel + Automation + Dashboard
Full System: Funnel + Automation + Dashboard
0
5
Cover image for Cleat Warehouse — Multi-Marketplace Selling System
Cleat Warehouse — Multi-Marketplace Selling System
0
3
React(5)
Nnamdi Ezenwanne's avatar
Nnamdi Ezenwanne
Málaga, Spain
I build & ship production web apps solo — idea to live
New to Contra
I build & ship production web apps solo — idea to live
Cover image for Gaji — Mobile Social Platform for Nigerian Communities
Gaji — Mobile Social Platform for Nigerian Communities
0
10
Cover image for Afroclip — African Viral Video Platform
Afroclip — African Viral Video Platform
0
9
Cover image for FarmZap: Nigerian Agricultural Marketplace
FarmZap: Nigerian Agricultural Marketplace
0
10
Cover image for BriefHaven is a full-stack SaaS
BriefHaven is a full-stack SaaS platform I built to solve a real problem for freelancers and agencies: chasing clients for project details, files, and approvals across scattered emails. It gives clients a single secure portal link — no account or password required — where they can fill in structured project briefs, upload files, exchange comments, and approve deliverables, all in one place. What I built: Secure, per-client portal links with email-verification (OTP) login — no passwords Structured brief-collection forms with client review/approval workflows File upload pipeline with virus/malware scanning Threaded comments between freelancer and client Automated email notifications for key events (new brief, new comment, approval requests) Billing integration (Lemon Squeezy) Stack: Next.js, TypeScript, Supabase (Postgres, Auth), Cloudflare R2 (file storage), Vercel (hosting), Transloadit (upload processing) Why it matters: This project shows what I can build end-to-end — from database schema and auth flows to file handling, transactional email, and billing — as a solo, AI-assisted full-stack developer. If you need a SaaS product, internal tool, or client-facing portal built from scratch, this is representative of the kind of work I deliver. Live: getbriefhaven.com (http://getbriefhaven.com)
2
80
React(3)
Alberto Guinda's avatar
Alberto Guinda
Zaragoza, Spain
AI Agent & Full-Stack Engineer · LangGraph · RAG · AI Apps
New to Contra
AI Agent & Full-Stack Engineer · LangGraph · RAG · AI Apps
Cover image for 🚀 A multi-tenant booking SaaS
🚀 A multi-tenant booking SaaS shown end-to-end From the product site that sells it, to the white-label site each business gets, straight to the dashboard that runs it all. 🤖 How it works: Customers book by chatting with an AI assistant in a messaging app. Every booking carries the channel it arrived through, turning chat conversations into a highly visible, organized agenda for the business owner. 📊 The Admin Panel: Live Analytics: Complete with an occupancy heatmap. Full Agenda Management: Create, reschedule, confirm, complete, or mark as no-show. Smart Operations: An auto-built customer CRM (generated directly from bookings), catalogue & staff management, and bot-collected reviews. Real-World Flexibility: The owner can force an appointment on top of another. Barbershops squeeze people in every day, and software that forbids it simply gets abandoned. 🛠 The Tech Stack: Frontend: Vite + React 19 + HeroUI v3 Backend: FastAPI (Python 3.14) on PostgreSQL Static Sites: Astro hosted on Cloudflare Monetization: Stripe subscriptions with a 30-day trial Data Integrity: No double-booking is guaranteed by a robust database exclusion constraint, rather than just relying on the interface. 🌍 Status: Live in production and successfully taking real appointments for a barbershop in Zaragoza.
2
250
Cover image for Recruiters sit on hundreds of
Recruiters sit on hundreds of CVs they can't search. Keyword search misses the obvious — the candidate wrote "React", you searched "frontend", they never surface — and every AI tool that fixes that ships candidate data to a third-party API. I built RecruitSecure AI to do the semantic search without the API call. The embedding model runs server-side through Transformers.js (quantized multilingual-e5-small, 384 dimensions, 100+ languages), so you can ask in Spanish and it finds CVs written in English — and nothing ever leaves the deployment. Drop in PDFs or DOCX and it extracts name, email, skills and experience, indexes each CV as a vector, and answers plain-language queries like "frontend lead who has built a design system": ranked by relevance, each result showing the exact CV fragments behind the match, so the recruiter sees the reason and not just a score. Retrieval is hybrid — pgvector HNSW cosine fused with BM25 full-text through Reciprocal Rank Fusion, then re-ranked from the recruiter's own thumbs up/down. Next.js 16, React 19, strict TypeScript, PostgreSQL + pgvector through Drizzle ORM, Auth.js, Stripe subscriptions, multi-tenant with AES-256-GCM encryption at rest and GDPR export and deletion. Built solo, end to end. The video is the real application: ten synthetic CVs uploaded through the actual pipeline, extracted, embedded and searched. Nothing staged.
3
379
Cover image for DevFlowAI is a free, open-source
DevFlowAI is a free, open-source suite of 20 developer tools — several powered by AI — that speed up everyday coding work in one fast, polished web app. From regex building and JSON formatting to JWT decoding and AI-assisted commit messages, it puts the utilities developers reach for daily behind a single, clean interface. I built it end to end in Next.js 16 and React 19 with strict TypeScript, shipped as an installable PWA in 8 languages. I held it to a hard quality bar: a perfect 100 / 100 / 100 / 100 Lighthouse score (performance, accessibility, best practices, SEO), WCAG AAA accessibility, and full CI/CD with automated security scanning (CodeQL, Semgrep, SBOM). It's live at devflowai.dev (http://devflowai.dev) and fully open source — a working demonstration of the standard I ship at: fast, accessible, tested, and production-grade.
1
307
Cover image for A conversational AI copilot that
A conversational AI copilot that takes a buyer from "I want to reserve" to contract and receipt. A LangGraph agent orchestrates 19 tools with human-in-the-loop confirmation before any payment, session memory, and RAG — over a transactional backend with hard guarantees (no double-booking, Stripe + webhook reconciliation, full audit) and a 3D/BIM viewer with a first-person walkthrough. Stack: TypeScript, LangGraph.js, Hono, PostgreSQL/Drizzle, React 19, react-three-fiber. LangSmith observability with GDPR PII redaction.
1
376
React(4)