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Added
24 minutes ago
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Full time
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Related skills

ruby ai langchain rails openai

About CloudWalk:

We are not just another fintech unicorn. We are a pack of dreamers, makers, and tech enthusiasts building the future of payments. With millions of happy customers and a hunger for innovation, we're now expanding our neural network - literally and metaphorically.

About the position

  • We're looking for aRuby Developerto help usautomate and scale our entire chargeback process, across both ouracquiringandissuingoperations.
  • In this role, you will work on building and refactoring robust dispute flows, integrating with major card networks likeVisaandMastercard, and leveragingAI APIsto 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.

    • What You'll Be Doing

  • Refactor and scale existing chargeback and dispute handling flows written in Ruby
  • Integrate with external APIs fromVisa,Mastercard, and other partners
  • Work withAI 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

    • What You Need To Succeed

  • Strong Ruby/Rails experience(at least 3 years)
  • Experience withRESTful APIs, background jobs, and service integrations
  • Passion forrefactoring legacy codeand designing scalable solutions
  • Understanding ofpayment networks (Visa/Mastercard)and/orchargeback operationsis a big plus
  • Familiarity withAI tools or APIs(e.g. OpenAI, Langchain, ML models) is a nice-to-have
  • Ownership mindset and a willingness to build from scratch

    • Additional Information

    Join us at CloudWalk, where we’re not just engineering solutions; we’re building a smarter, AI-driven future for payments—together.

    By applying for this position, your data will be processed as per CloudWalk's Privacy Policy that you can readhere in Portugueseandhere in English.

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