Senior Software Engineer, Fraud Risk

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October 3

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Degica Co, Ltd.

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Degica Co. , Ltd. is a payment processing service company that offers a wide range of payment methods across various regions, including Japan, South Korea, China, Europe, and ASEAN countries. Their flagship product, KOMOJU, supports major payment methods like VISA, Mastercard, Alipay, WeChat Pay, and local options such as Konbini in Japan and Toss in South Korea. Established in 2005 and headquartered in Tokyo, Japan, Degica provides robust integrations and API documentation for seamless payment processing. The company facilitates international transactions by managing the receipt and payout of sales proceeds on behalf of their clients.

11 - 50 employees

📋 Description

• Be a builder: contribute to the implementation of our antifraud solutions. • Improve parts of our antifraud system to strengthen its features and make it robust. • Develop merchant-facing risk management tools: Create intuitive dashboards that give merchants real-time visibility into fraud patterns, customizable risk rules, and actionable insights to optimize their fraud prevention strategies. • Convert our ML models (e.g. merchant risk scorecards) into working code with engineering excellence • We work agilely with minimal amount of meetings. With autonomy and trust, you will bring live functionalities independently that impact many merchants and shoppers.

🎯 Requirements

• 5+ years of professional experience as an engineer, currently working as a Engineer or Senior Engineer, at least 2 years of personal or professional experience with Ruby. • Production debugging expertise: You can diagnose complex production issues, and get up to speed with an existing codebase without extensive hand-holding. You're comfortable diving into unfamiliar code, understanding its intent, and making surgical improvements without breaking existing functionality. • You have a strong sense of ownership, helping you move projects forward independently and make a meaningful impact. • You have great communication skills and the ability to articulate complex technical concepts in front of different stakeholders. • Detail-oriented team player: You catch edge cases others miss, foster positive working relationships across the team, and reliably provide coverage when teammates are unavailable. • Business-level English proficiency. • Nice to Haves*These aren't required, but be sure to mention them in your application if you have them.* • Familiarity with statistical methods (logistic regression, GLMs) and machine learning, ability to perform exploratory data analysis (EDA), experience with data ETL pipelines, and comfort working with SQL to analyze patterns in the data. • Python, or any other major programming language. • Experience working in the credit card or payment industry. • Background in payment security or security systems in general. • Conversational-level Japanese proficiency.

🏖️ Benefits

• At Degica, we embrace remote work while also offering office space for those who prefer in-person collaboration • 10 days regular vacation, additional 5 days summer and 5 days winter vacation • Paid birthday holiday • Budget for self-learning allowance, to ensure our employees’ skills remain current • Language training for Japanese • Company membership of O'Reilly • Twice a week office lunch