Software Engineer

About This Role

Lead enterprise-scale platform development for Humana's Next Best Action (NBA) platform, focusing on decision integrity and observability. Ensure every decision is traceable, explainable, and defensible.

Responsibilities

• Define and enforce determinism guarantees within the decision kernel, including context processing, rules application, scoring, reconciliation, and response generation.
• Govern artifact management such as rule packs, reason-code taxonomies, model versions, and configuration settings to ensure decisions are fully explainable and compliant.
• Implement contact policy controls, including consent, quiet hours, and frequency caps, ensuring all channels adhere to policies.
• Design and develop end-to-end traceability, establishing data lineage, causality, and correlation across multiple platform components.
• Create append-only decision ledgers with hash-verified replay paths to support auditability and compliance.
• Develop semantic guards to detect and alert on business logic errors, extending monitoring beyond infrastructure metrics.
• Integrate OpenTelemetry for operational dashboards displaying key performance indicators such as latency, rule denials, and cache hit rates.
• Develop validation harnesses to ensure decision consistency and explainability, integrating these into CI/CD pipelines.
• Ensure platform interfaces comply with contracts through OpenAPI, schema validation, and consumer-driven contracts.
• Automate resilience checks, including timeouts, circuit breakers, fallback logic, and chaos testing to uphold service level objectives.

Requirements

• 8+ years of experience in backend or platform service development
• 3+ years in a senior or lead role overseeing mission-critical systems
• Proven expertise in delivering backend/platform systems with a focus on correctness, reliability, and traceability
• Strong understanding of stateful, distributed system design and failure mode analysis
• Hands-on experience with advanced observability techniques, including structured logging and distributed tracing
• Proficiency in Java backend development, emphasizing deterministic execution and explicit invariants
• Familiarity with event-driven architectures, particularly with Kafka or similar pub/sub systems
• Expertise in relational database design, especially with PostgreSQL or equivalent, supporting auditability and replay
• Knowledge of OpenTelemetry instrumentation and designing observability systems for business-context explanations
• Experience working with Node.js/TypeScript services for orchestration and API composition

Qualifications

• Minimum of 8 years of experience in backend or platform service development, including at least 3 years in a senior or lead role overseeing mission-critical systems.

Nice to Have

• Experience with rules/policy engines or domain-specific languages (DSLs)
• JVM-compiled DSL experience
• Understanding of ML inference systems, deterministic ranking, and fallback strategies
• Ability to develop validation harnesses, contract validation, property-based testing, and performance/chaos testing in CI/CD pipelines

Skills

* Required skills

Benefits