Senior Backend Engineer - Rules Engine (Java/Kafka) Hybrid

Humana Inc; Saint Paul (MN); Hybrid; USD 107,000 - 147,000; Full time

Job summary

Humana Inc. in the United States is seeking a Senior Software Engineer to join Team Caliber, shaping the NBA platform's rules engine which determines member eligibility, suppression, frequency, and consent.

You will design Java/Drools rules, build REST APIs with Java/Spring, and connect microservices via Kafka. The role emphasizes correctness, performance, and PHI-aware coding practices in a collaborative, hybrid setup.

Qualifications

• Bachelor's degree in computer science or relevant field.
• 5+ years of software engineering experience with strong Java and Spring/Spring Boot skills.
• Experience building and maintaining backend services and REST APIs in production.
• Comfort designing and reasoning about complex conditional/business logic.
• Working knowledge of event-driven integration and Kafka producer/consumer patterns.
• Experience operating on cloud infrastructure (Azure or equivalent) with containers/Kubernetes and CI/CD.
• Strong testing discipline and attention to correctness.
• Clear communicator across engineering, product, and compliance.

Responsibilities

• Rules engine development — Design, build, and maintain business rules in Java and Drools that govern eligibility, suppression, frequency capping, and consent.
• Backend services — Build and own the Java/Spring services and REST APIs that expose the rules engine to the rest of the platform.
• Event integration — Produce and consume Kafka events to connect the rules engine to upstream signals and downstream decisioning and activation.
• Correctness and testing — Write thorough tests for rule logic and services; treat rule correctness as a first-class, auditable concern.
• Performance — Keep rule evaluation fast and predictable as the ruleset and traffic grow.
• Quality — Run and participate in code reviews, uphold engineering standards, and ship production-ready code in a PHI-handling environment.
• Collaboration — Partner with Product and compliance to turn business and regulatory requirements into clear, maintainable rules.

Skills

Java

Spring Boot

REST APIs

Kafka

Event-driven

Cloud (Azure)

Kubernetes

CI/CD

Testing

Communication

Education

Bachelor's degree in Computer Science or related field

Tools

Drools

React

TypeScript

Spring

Job description

Humana Inc. in the United States is seeking a Senior Software Engineer to join Team Caliber, shaping the NBA platform's rules engine which determines member eligibility, suppression, frequency, and consent.

You will design Java/Drools rules, build REST APIs with Java/Spring, and connect microservices via Kafka. The role emphasizes correctness, performance, and PHI-aware coding practices in a collaborative, hybrid setup.