Apache, Best Practices, Business Practices, Business Solutions, Cloud Computing, Continuous Deployment/Delivery, Continuous Integration, Documentation, Engineering, Finance, Financial Services, High Throughput, Identify Issues, JBoss Rules (aka Drools), Java, JavaScript, Loans, Node.js, Production Support, Python Programming/Scripting Language, Software Engineering, Technical/Engineering Design, Test Plan/Schedule, Test Scenario, Testing, Underwriting, Unit Test, Work From Home
Join Our Team as a Lead Drools Engineer
OneMain Financial, the largest lending-exclusive financial company in the U.S., is seeking an experienced Lead Drools Engineer. This role is perfect for those who are passionate about designing, building, and maintaining business rules for a large-scale underwriting and decisioning platform. Work remotely from the comfort of your home in North Carolina, while contributing to a company with a century-old mission of doing the right thing for our customers.
Key Responsibilities
- Design, develop, and maintain Drools (KIE) rules using DRL, Decision Tables, and Rule Templates.
- Optimize rule execution for low latency and high throughput.
- Ensure decisions are deterministic, explainable, and auditable.
- Contribute to decisioning and rules architecture for reusability and controlled rollout.
- Participate in design reviews and technical discussions.
- Develop unit tests and scenario-based tests to validate rule behavior.
- Troubleshoot production issues and support deployments across environments.
- Act as a subject-matter expert for Drools and business rules best practices.
- Establish standards for rule authoring, documentation, testing, and maintainability.
Requirements
- 7 years of software engineering experience.
- 4 years of hands-on experience with Drools / KIE.
- Strong proficiency in Java and Spring / Spring Boot.
- Deep experience with DRL, Decision Tables, Rule Templates, and KIE sessions.
- Experience with policy-driven or decisioning systems.
- Strong understanding of business rules management systems (BRMS).
- Exposure to cloud platforms and CI/CD pipelines.
Preferences
- Experience in building a lightweight orchestration layer using Apache Pekko.
- Experience with Python, JavaScript, Node.js.
What Success Looks Like: Business policies are accurately captured as maintainable Drools rules, decisions are fast, consistent, and explainable, rule changes can be made confidently, and the rules layer is reliable, scalable, and regulator-ready.
Ready to take the next step in your career? Apply now and join us in shaping the future of financial services!
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