Hire an Expert Developer: Transform Ideas into Impactful Solutions

Hire an Expert Developer: Transform Ideas into Impactful SolutionsHire an Expert Developer: Transform Ideas into Impactful Solutions

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Martin Matta

• 9h

Just launched my developer portfolio on Contra.

I build systems that solve real business problems — not prototypes, but production-ready tools that are live and generating impact.

A few things I've shipped recently:

→ Cinema scheduling platform with role-based access and conflict detection → Automated email parser that processes hundreds of KDMs weekly in seconds → Full e-commerce store with Firebase and WhatsApp checkout → Two real-time multiplayer games with React + Firestore

If you need a web app, an internal tool or a workflow automation — check out my work below.

martinmatta.com.ar

JavaScript freelancer webdevelopment

martinmatta.com.ar

Martin Matta — Developer

Desarrollador especializado en automatizaciones, aplicaciones web y sistemas internos. Construyo herramientas funcionales, en producción, que generan impacto concreto de negocio. Disponible para proyectos.

Alice Razumova

pro

• May 19

100 of you! Thank you🎉

I've been a bit quiet the past few weeks, heads down on the biggest project I've worked on yet🤩 But I didn't want to let this go without saying thank you.

The Contra community is incredible, and the support here actually means a lot.

Brand Design freelancerlife branddesigner

Nagaraj M

pro

• May 19

Congrats! Keep going :)

Angel J.

pro

• May 19

Honest question: how do you make your projects look so good on Contra?

Not talking about the work itself, but the presentation. Device mockups, clean compositions, scroll videos. What tools are you using to put all that together?

Looking to level up my portfolio, any recommendations are welcome.

community mockups profile

Toms Stals

pro

• May 20

https://shots.so/ is great for mockup creation, definitely recommended.

shots.so

Create Amazing Mockups

david kocis

• May 20

Living Wholistically Client Portal Custom-built private coaching portal for an 8-week holistic wellness program. I designed and developed the full client experience, including Supabase authentication, personalized client protocols, phase-based program delivery, audio resources, and a cleaner internal workflow for the coach. The portal replaced scattered Google Docs and email delivery with a branded system clients could log into, revisit, and follow throughout the program. Role: Full-stack designer and developer Tools: React, Supabase, Vercel, responsive UI design Live project: https://livingwholistically.vercel.app/login