Software Engineer II (Backend Java)
About The Position
This role focuses on authoring, maintaining, and optimizing fraud rules and policies within real-time fraud decisioning engines to protect customers from account takeover (ATO) and other fraud. The Software Engineer II will contribute significantly to the backend services in the fraud-prevention stack, including designing and implementing features, API changes, and integrations. They will also make production code changes and work to improve the reliability, performance, and quality of these services. A key aspect of the role involves using AI coding tools (Claude Code, Cursor, Codex) to accelerate rule authoring and service development, including generating, refactoring, and validating rule sets, tests, and service code, with human review and testing. The engineer will translate policy and analytics requirements into precise, testable rule logic, tuning thresholds, fraud signals, and link-analysis weights to enhance fraud-catch precision while minimizing friction for legitimate customers. Responsibilities include end-to-end testing of changes before release, managing safe production rollouts (including silent/shadow-mode validation and change-request approvals), and contributing to engineering quality across the stack through design docs, code reviews, automated tests, CI/CD, and observability. The role also involves supporting monitoring, on-call duties, and rapid issue resolution in production, utilizing observability dashboards to track service health, rule performance, latency, and match rates. Collaboration with Policy, Analytics, Data Science, and Product partners is essential to respond to emerging fraud attacks and improve detection coverage.
Requirements
- 2+ years of professional software engineering experience building and contributing to backend services (SWE2 level).
- Proficiency in a server-side language, especially Java (our primary stack); Python or Node.js also valuable.
- Solid experience with RESTful API design and building/maintaining API integrations.
- Experience with database technologies (relational and/or NoSQL).
- Hands-on experience contributing to a production service — production-quality code and tests, deployment, and on-call.
- Proficiency with AI coding tools (Claude Code, Cursor, Codex, etc.) and the judgment to use them effectively while validating their output.
- Bachelor’s degree in an IT-related or Engineering field.
Nice To Haves
- Experience with a server framework such as Spring MVC (preferred), Express, or Django.
Responsibilities
- Author, maintain, and optimize fraud rules and policies across real-time fraud decisioning engines.
- Contribute significantly to backend services in the fraud-prevention stack: design and implement features, API changes, and integrations.
- Make production code changes and improve reliability, performance, and quality of backend services.
- Use AI coding tools (Claude Code, Cursor, Codex) to accelerate rule authoring and service development.
- Translate policy and analytics requirements into precise, testable rule logic.
- Tune thresholds, fraud signals, and link-analysis weights to raise fraud-catch precision and reduce friction for legitimate customers.
- Test changes end-to-end before release using pre-release testing and artifact-deployment tooling.
- Manage safe production rollouts, including silent/shadow-mode validation and change-request approvals.
- Contribute to engineering quality across the stack: design docs, code reviews, automated tests, CI/CD, and observability.
- Support monitoring, on-call, and rapid issue resolution in production.
- Collaborate closely with Policy, Analytics, Data Science, and Product partners to respond to emerging fraud attacks and improve detection coverage.
Benefits
- Comprehensive healthcare coverage (medical, dental, and vision plans)
- Supplemental coverage (accident insurance, critical illness insurance and hospital indemnity)
- 401(k)-retirement savings
- Life & disability insurance
- Employee assistance program
- Identity theft protection
- Legal support
- Auto and home insurance
- Pet insurance
- Employee discounts with some preferred vendors
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
