
201 - 500 employees
Founded 2014
💳 Fintech
🔐 Security
☁️ SaaS
Fintech • Security • SaaS
Koin is a Brazilian payments and fraud-prevention company that provides AI-powered anti-fraud solutions and payment products for merchants, including Pix parcelado (BNPL) and a payment gateway. It helps e-commerce businesses increase conversion and reduce fraud losses by combining machine learning, expert rules, real-time detection and recovery strategies, and operates as a licensed payment institution/correspondent under Brazilian regulations.
🔥 2 minutes ago
🗣️🇧🇷🇵🇹 Portuguese Required
Where this job comes from
Posted on Koin's careers page, not through a job board
First seen by Remote Rocketship 2 minutes ago

201 - 500 employees
Founded 2014
💳 Fintech
🔐 Security
☁️ SaaS
Fintech • Security • SaaS
Koin is a Brazilian payments and fraud-prevention company that provides AI-powered anti-fraud solutions and payment products for merchants, including Pix parcelado (BNPL) and a payment gateway. It helps e-commerce businesses increase conversion and reduce fraud losses by combining machine learning, expert rules, real-time detection and recovery strategies, and operates as a licensed payment institution/correspondent under Brazilian regulations.
• Develop and enhance microservices, independently handling complex tasks across both technical and business domains. • Resolve production issues independently, seeking support only in urgent or highly complex cases. • Create metrics, alerts, and other tools to ensure the reliability and smooth operation of services. • Work closely with the business team, challenging priorities and proposing alternatives based on domain and application knowledge. • Identify dependencies and impacts on other teams and coordinate with them to build solutions collaboratively. • Help identify and build the technical backlog. • Serve as a reference for code quality, closely monitoring the impact of AI use on project maintenance. • During code reviews, focus on tests, scenarios, and coverage while providing constructive feedback to colleagues. • Mentor less experienced team members on best practices and on which sensitive data or proprietary code must not be shared with AI tools.
• At least 4 years of experience in software development. • Strong experience in backend development with Java and Spring. • Experience designing APIs and developing solutions that impact multiple teams. • Experience supporting production systems and using monitoring tools, including log analysis and error correlation—Datadog, New Relic, or similar tools. • Track record of delivering code with strong performance, scalability, and few production failures. • Ability to independently take ownership of loosely defined tasks, plan your own work, and anticipate risks. • Clear communication in technical discussions and with business teams, with a constructive approach to differing opinions. • Daily use of Generative AI in development, applying prompt engineering best practices and critically reviewing generated code.
• Life insurance • Health and dental insurance • Transportation allowance • Meal and food allowances (VR + VA) • Childcare assistance • Extended parental leave • TotalPass or Wellhub • Work From Anywhere (WFA) • Golden Farma • Home office allowance
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