Skip to content
Leandro Lima
Building something

Leandro Lima

I build products that solve real problems, and lead the teams that ship them.

Tech Lead in banking and payments, founder of a software house, and a constant learner in between. What I care about is the moment an idea stops being a slide and starts working for someone.

Explore the dev toolsAbout my work
Leandro Lima

Where I operate

Experience

5 years inside Brazil's financial system

SPI, STR and DICT in production, where a mistake has no undo

Focus

Critical systems that cannot fail

High volume, real money, and no second attempt

Reach

Solutions for companies across Brazil

From payment rails to a business going digital for the first time

Approach

The problem comes before the stack

Technology is a consequence, never the starting point

About

A constant learner who likes building things that matter.

I believe technology turns ideas into real solutions, simplifying processes and creating impact you can measure. I'm a heavy enthusiast of AI, and I use it every day for testing, research and integrations.

My work sits between two things people usually treat as separate: technical leadership and technical depth: I shape solutions and coordinate delivery, and I stay close enough to the code to know why a decision is the right one. The other half is entrepreneurial. I've started companies, and I keep coming back to the same question: whose problem does this actually solve?

Trajectory

Where I've built things

  1. Stark Bank

    Currently

    Tech Lead

    I lead technically at Stark Bank, shaping solutions from conception and coordinating delivery of products that have to stay scalable and robust under real financial load.

    I have strong command of the Brazilian Payment System, working directly with the core BACEN systems (SPI, STR and DICT) and all of the infrastructure around them. Most of my day is Python on Google Cloud Platform, dealing with messaging systems and infrastructure management.

    I started here as a Junior Engineer, building and maintaining SDKs across Python, PHP, Java, Elixir, Node, Ruby and C#, with Go as my main focus. As a Mid-level Engineer I automated internal processes; one of those cut a financial process's runtime by more than 90% and became an internal benchmark. From there: Senior Engineer, then Tech Lead.

    • Python
    • Go
    • GCP
    • Pub/Sub
    • PostgreSQL

  2. Claire Co.

    Previously

    Tech Lead

    I led the technology team, coordinating delivery and acting as the direct bridge to stakeholders and founders.

    I owned technical and architectural decisions, sprint planning, code review and end-to-end follow-through on development.

    The headline delivery was Match Profile, a talent management platform built on behavioural analysis, taken from zero to production with NestJS, TypeScript and PostgreSQL.

    • NestJS
    • TypeScript
    • PostgreSQL

  3. Apptime

    Previously

    Co-founder

    I co-founded Apptime to help small and mid-sized businesses go digital, from landing pages to full e-commerce.

    Beyond structuring the company itself, I worked on the platform, mostly on the backend with Golang and Google Cloud Platform.

    • Golang
    • GCP

  4. Forus App

    Previously

    Backend Engineer

    Feature development and maintenance in Golang, with data modelling in PostgreSQL.

    • Golang
    • PostgreSQL

  5. Tecla Certa

    Earlier

    Technical Support

    Internal technical support, integrating new suppliers into the ERP and maintaining the e-commerce platform.

    My first professional experience in tech, and where the habit of taking things apart started.

    • ERP
    • E-commerce

Education

Academic background

Mechatronic Engineering

FIAP

Completed

Electrical & Electronic Engineering

IFBA, Instituto Federal da Bahia

Prior coursework

Selected work

Projects

A few things I've shipped. More on the way.

Construction management

Construction management for medical gas systems in hospitals and emergency units, where every project has to survive an ANVISA inspection, built for a company with over 15 years in the field.

  • Python
  • FastAPI
  • GCP

Match Profile

Talent management platform driven by behavioural analysis, built from zero to production for Claire Co.

  • NestJS
  • TypeScript
  • PostgreSQL

Domicile institution

Infrastructure that made Stark Bank a domicile institution in the Brazilian Payment System, and opened the same rails to clients who wanted to plug into Stark instead of building their own.

  • SPB
  • Núclea
  • Python
Free & client-side

A toolbox I actually use.

Twenty-two small utilities for the things developers do a hundred times a week: formatting, decoding, generating, comparing. Everything runs in your browser. Nothing is uploaded, nothing is stored on a server.

  • No accounts, no upload, no tracking of what you paste
  • Works offline once the page has loaded
  • Local history so you can get back to your last input
Open the tool hub

Contact

Let's talk.

A product to build, a system to untangle, a team to lead, or an idea that still needs a shape. If you have a problem worth solving, I'd like to hear about it.

Connect on LinkedIn