Your product already exists. It just needs a safe path to production.

I review the code, finish the missing integrations and take your product through deploy, with the domain, database and accounts in your name. I work with apps built in Lovable, Bolt, v0 or Cursor, as well as code written by another developer.

Assess my app

Reply within 24h, sem obrigação de contratar.See how I price

services.app

Consulting to take your app to production

I step in when the prototype has proved the idea but still needs security, stability or technical experience to launch with confidence.

The final push

The final stretch is missing: close the integrations, fix the flows that fail in real use and publish safely. I step in at this stage, organize what already exists and leave the app ready for users.

Understand the service

What’s in scope

  • Diagnosis and prioritized finishing plan
  • Fixes for bugs and critical flows in scope
  • Database, authentication and integration review
  • Configured deploy with basic monitoring
  • Launch checklist and documentation

The product works, but every change breaks something else? The audit shows the real state of the codebase: where the risks are, what to fix first and what can wait.

Understand the service

Almost every product starts working before it is protected. I review the essential security controls and deliver a plan to reduce risks before you receive users, data and payments.

Understand the service

Publishing is more than clicking the platform button. I configure your domain, a staging environment, backups and monitoring, all in accounts in your name. You do not become dependent on a platform or developer.

Understand the service

Every app in production degrades on its own: a dependency gets old, a third-party API changes, a user finds the path nobody tested. Maintenance means someone notices before the customer and fixes it before it costs you.

Understand the service

Not sure which service fits?

Tell me where the app stands and what got stuck. I’ll reply with where I would start. Reply within 24h, with no obligation to hire.

See how I price
Assess my app

about-me.md

Portrait of Leonardo Soledade Costa

Nice to meet you — I’m Léo.

I’m a product and software consultant who writes code. I build and review web and mobile applications from database to deploy, and I like owning the whole project, not just one slice of it.

Before code, I worked in marketing: I was a media analyst at Meta and a digital marketing director, so I understand the business behind every feature. In my consulting work at Soledade, I bring engineering, product and growth together to take applications from validated idea to reliable operation.

Education

  • Systems Analysis and Development · FIAP2023 — 2025
  • Marketing · Estácio2018 — 2022

Development

Web and mobile applications, from interface to API. Performance, accessibility and code ready to scale.

Product & Growth

Funnels, paid media and analytics. Useful when software needs to generate revenue, not just work.

Design

UI in Figma and attention to detail. Interfaces that are simple to use and easy to maintain.

stack.json

What I work with

What I use every day and the role each area plays in projects.

Web

React · Next.js · TypeScript

My daily foundation. The project sites run on it, including this one.

Back-end

Go · .NET / C#

APIs, integrations and the services behind the front ends.

Mobile

React Native

Apps that reuse the foundation and thinking behind web projects.

Automation

N8N · Webhooks · Apps Script

Integrations between CRMs, spreadsheets and internal systems.

Growth

Meta Ads · Google Ads · Analytics

Where I came from. It comes in when a project needs acquisition.

Design

Figma · Photoshop · Illustrator

Prototypes, UI and brand materials.

experience.log

Experience

I started in sales, moved through marketing and arrived at development.

Jan 2025 — Present · São Paulo, BR

Product and Software Consultant

Soledade
Current

Technical consulting to finish, review and launch apps, MVPs and digital products, bringing development, security, product and growth together.

Oct 2024 — Present · São Paulo, BR

Mid-level Full-Stack Developer

Favale Físico + Saúde
Current

Web and mobile applications with React, Next.js, React Native and .NET/C#. REST and GraphQL API integrations, performance and SEO.

Jun 2023 — Oct 2024 · São Paulo, BR

Digital Marketing Director

Favale Físico + Saúde

Paid media campaigns, SEO-optimized Next.js sites and Looker Studio dashboards.

Jan 2022 — Nov 2022 · São Paulo, BR

Paid Media Analyst

Meta

Strategic analysis for small and medium businesses advertising on Facebook, focused on campaign performance.

Jul 2017 — Aug 2019 · São Paulo, BR

Sales Coordinator

Cerealista A Granel

Coordinated and trained a four-person sales team, while handling store service and logistics.

contact.sh

Portrait of Leonardo Soledade Costa

What’s keeping your app from going live? Tell me and I’ll point to the next step.

Send the current stage, what already works and the main blocker. I’m the one who assesses and replies.

São Paulo, BR