Engineer - Ruby
CloudWalk
Engineer - Ruby
We're looking for a Ruby Developer to help us automate and scale our entire chargeback process, across both our acquiring and issuing operations.
In this role, you will work on building and refactoring robust dispute flows, integrating with major card networks like Visa and Mastercard, and leveraging AI APIs to bring intelligence and automation to the core of our operation.
You'll be responsible for connecting internal and external APIs, designing scalable architecture, and making our dispute handling smarter, faster, and more autonomous.
Refactor and scale existing chargeback and dispute handling flows written in Ruby
Integrate with external APIs from Visa, Mastercard, and other partners
Work with AI APIs (generative and/or machine learning) to automate analysis, decision-making, and documentation
Build resilient services to support end-to-end chargeback processes for both issuing and acquiring
Collaborate with product, data, and operations teams to deeply understand business rules and pain points
Write clean, maintainable code and contribute to a culture of continuous improvement
Strong Ruby/Rails experience (at least 3 years)
Experience with RESTful APIs, background jobs, and service integrations
Passion for refactoring legacy code and designing scalable solutions
Understanding of payment networks (Visa/Mastercard) and/or chargeback operations is a big plus
Familiarity with AI tools or APIs (e.g. OpenAI, Langchain, ML models) is a nice-to-have
Ownership mindset and a willingness to build from scratch
Join us at CloudWalk, where we're not just engineering solutions; we're building a smarter, AI-driven future for payments—together.