ROR Principal Architect - Strategic Projects

About Yabx Yabx is a global FinTech venture of Comviva, aimed at simplifying financial access for the 2 Bn+ underbanked people in emerging markets across Africa, Asia, and Latin America. We use technology and analytics to reduce the cost of delivering financial services. In doing so, we partner with leading Telecom Operators, Banks, MFIs, Credit Bureaus, and Mobile Financial Services. Yabx's mission is to create world-class innovative products to improve the lives of these people.

Key Responsibilities

• Architect, design, and develop backend systems, RESTful APIs, and core components of our industry-leading SaaS lending platform with a strong focus on scalability, performance, and reliability.
• Provide technical leadership across multiple projects, guiding architectural decisions, establishing best practices, and ensuring alignment with long-term product vision.
• Mentor, coach, and elevate a team of high-performing engineers, fostering a culture of technical excellence, innovation, and accountability.
• Research, evaluate, and introduce modern technologies, frameworks, and architectural patterns to solve complex engineering challenges and future-proof the platform.
• Propose, implement, and continuously refine performance enhancements, optimization techniques, and scalable design strategies to support rapid growth and high transaction volumes.
• Collaborate cross-functionally with product managers, engineering teams, DevOps, QA, and design to ensure seamless integration and delivery of mission-critical features.
• Own the end-to-end architecture of assigned modules, ensuring high availability, security compliance, fault tolerance, and adherence to industry best practices.
• Conduct architecture reviews, code reviews, and design audits to maintain high-quality engineering craftsmanship across the platform.

Preferred Qualifications

• Advanced expertise in Ruby on Rails (RoR) and its ecosystem.
• Proven ability to translate product requirements into scalable, high-performing architectural solutions.
• Demonstrated experience leading engineering teams, driving productivity, code quality, and technical excellence.
• Strong understanding of multithreading, thread pooling, background job processing, and scheduling, along with relevant tools and libraries.
• Experience working with microservices architectures, distributed system patterns, and applications involving multiple data sources.
• Proficiency in Linux-based environments, including command-line operations and system-level tasks.
• Hands-on experience with unit testing frameworks such as RSpec and Cucumber.
• Deep knowledge of object-oriented programming principles and metaprogramming.
• Experience managing and optimizing relational databases and MongoDB.
• Working knowledge of server configuration, infrastructure management, and modern deployment practices.
• Proficiency with version control systems, preferably Git.