Matheus Acosta Martins

5.0

(1 reviews)

US$10.00

For every 15 mins

Sessions/Jobs

First 15 mins free for your first session

ABOUT ME

Ruby software engineer | Payments & Financial Systems Specialist

I’m a dedicated software engineer with 5+ years of experience, specializing in Ruby and Rails development. My primary focus has been building and optimizing payments and financial systems, ensuring robust, scalable, and secure solutions for complex transactional workflows.

Beyond Rails, I’ve worked with JavaScript, Golang, Elixir, Python, and other technologies, giving me a broad technical foundation to approach diverse challenges. I’m also skilled in implementing CI/CD pipelines, leveraging Docker, and automating workflows with GitHub Actions to streamline development and deployment processes.

In addition to my industry experience, I’ve served as a university IOT teacher, combining my technical expertise with a passion for teaching. Whether it’s debugging code, designing architecture for financial systems, or mastering best practices, I enjoy mentoring developers and empowering them to succeed.

Let’s collaborate to solve your coding challenges and elevate your projects to the next level!

Portuguese, Spanish, English

London (+00:00)

Joined January 2025

EXPERTISE

5 years experience

5 years experience

5 years experience

5 years experience

3 years experience

REVIEWS FROM CLIENTS

5.0

(1 reviews)

Dimitar Zhelev

January 2025

I had the pleasure of working with Matheus for a code review session, and I couldn't be more impressed. From the start, he was incredibly kind, approachable, and professional. He identified significant issues in my code that I hadn't noticed and provided actionable recommendations for improvement. Not only did he offer thoughtful feedback, but he also wrote a README document with detailed comments, ensuring I could follow through on his advice even after the session.

EMPLOYMENTS

Software Engineer

Henry Schein One

2024-02-01-Present

In my role as a Software Engineer, I work on ensuring the consistency and stability of our transaction ledger, which is crucial for accur...

In my role as a Software Engineer, I work on ensuring the consistency and stability of our transaction ledger, which is crucial for accurate money tracking. I had a significant role in integrating Stripe POS into our payment systems, greatly enhancing our payment processing capabilities and improving the user experience. Additionally, I help maintain integrations with multiple claims providers across the globe, including the NHS, to ensure smooth and efficient claim processing. My efforts are focused on building reliable and user-friendly systems that meet the needs of our diverse stakeholders.

Ruby

SQL

Ruby on Rails

Ruby

SQL

Ruby on Rails

Docker

Ember.js

JavaScript

GitHub Actions

AWS

Software Engineer

Smart Pension

2022-01-01-2024-02-01

I worked in the payments team creating new features and maintenance, and I also worked on a modularisation project to break a piece of a ...

I worked in the payments team creating new features and maintenance, and I also worked on a modularisation project to break a piece of a monolith into a rails gem and GoCardless integration for direct debit payments. This project involved several architectural decisions that were made with the team along with technical architects. I also work on the call during and after hours, dealing with incidents and helping other engineers with requests for production and external requests. For this role, some automation tasks were done as well.

Ruby

SQL

Ruby on Rails

Ruby

SQL

Ruby on Rails

Shell

RubyGems

Docker

Kubernetes

Docker Compose

Datadog

AWS

Software Engineer

Delivery Center

2020-10-01-2021-12-01

DC provided a platform to unify all delivery platforms in Brazil in the same system so the stores could easily manage all their orders. I...

DC provided a platform to unify all delivery platforms in Brazil in the same system so the stores could easily manage all their orders. I worked in the seller squad, handling our platform's seller journeys. We created a SAAS platform from scratch using existing infrastructure. The company had to create a model that allowed us to make the platform available for stores outside of partner malls so small businesses could also use the platform from anywhere.

Ruby

Ruby on Rails

Docker

Ruby

Ruby on Rails

Docker

Google Cloud Platform

Elixir

Microservices

Docker Compose

GraphQL

GitHub Actions

PROJECTS

qmk_firmwareView Project

2024

I like to build mechanical keyboards, so here are some of my prototypes on this fork.

C++

Arduino

C++

Arduino

ZTE-MU5001-HACKView Project

2024

Improved dashboard and menus for a legacy 5g router.

JavaScript