Humana · 3 hours ago
Senior Software Engineer - Next Best Action
United States
Full-time
Remote
Senior Level
$107K/yr - $147K/yr
6+ years expHumana Inc. is committed to putting health first, and they are seeking an accomplished Senior Software Engineer to design, implement, and operate mission-critical stateful services. This role involves architecting state machines, managing transactional state, and ensuring the reliability of automated decisioning and personalization platforms.
Health CareHealth InsuranceInsuranceVenture Capital
Responsibilities
Design, build, and maintain explicit state machines governing:
Lifecycle transitions (e.g., open → in progress → completed → suppressed)
Validation of permissible transitions
Time-based and event-driven changes
Ensure state machines are:
Clearly modeled and not hidden in code logic
Deterministic, reproducible, and auditable
Easily understood and testable
Robust against illegal or duplicate transitions through comprehensive validation
Architect and manage transactional state stores serving as the single source of truth
Support safe, high-concurrency read/write operations
Uphold system invariants across partial failures and recovery scenarios
Implement robust idempotency controls so:
Requests can be safely retried
Commands execute at most once
Duplicate events do not compromise state integrity
Develop APIs and workflows resilient to retries, restarts, and replay events
Employ the outbox pattern to guarantee atomicity of state updates and event publication
Prevent loss or duplication of side effects
Maintain clear separation between state mutation and downstream event delivery
Facilitate replay, backfill, and recovery operations without breaching state guarantees
Integrate seamlessly with messaging and streaming platforms, ensuring fault tolerance
Design for correctness under concurrent updates, network partitions, partial failures, and service redeployments
Apply expertise in:
Idempotency keys
Optimistic and pessimistic locking strategies
Event ordering and causality
Balance rigorous correctness with performance and latency requirements
Leverage AI-powered and agentic tools to:
Automatically generate and validate state transition tests
Probe edge cases and concurrency challenges
Assist in code reviews, refactoring, and documentation
Accelerate debugging, incident analysis, and root cause discovery
Use AI responsibly to enhance productivity while maintaining clarity and system integrity
Engineer services with robust observability through:
Structured logging, metrics, and alerting
Distributed tracing
Ensure all state transitions and emitted events are:
Fully traceable and reproducible
Auditable for compliance and investigative needs
Partner with platform, data, and quality engineering teams to assure end-to-end reliability
Participate in architecture and design reviews to elevate system quality standards
Mentor and guide engineers on best practices for safe, reliable, and maintainable distributed systems
Qualification
Required
6+ years of experience in backend or platform engineering
Demonstrated hands-on expertise with state machine modeling and lifecycle management
Demonstrated hands-on expertise with transactional state stores
Demonstrated hands-on expertise with idempotent API and workflow design
In-depth understanding of exactly-once or effectively-once processing
In-depth understanding of failure modes in distributed environments
Proficiency in one or more contemporary languages (e.g., Java, Kotlin, Go, Python)
Experience with AI-assisted development tools for productivity and code quality
Preferred
Experience with outbox, transactional messaging, or event sourcing patterns
Familiarity with low-latency, high-throughput architectures
Operational experience in systems requiring strict auditability and correctness
Background in regulated or mission-critical domains
Benefits
Medical, dental and vision benefits
401(k) retirement savings plan
Time off (including paid time off, company and personal holidays, volunteer time off, paid parental and caregiver leave)
Short-term and long-term disability
Life insurance
Company
Humana
Humana is a health insurance provider for individuals, families, and businesses.
10001+ employees
H1B Sponsorship
Humana has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
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Trends of Total Sponsorships
2025 (282)
2024 (246)
2023 (284)
2022 (274)
2021 (212)
2020 (84)
Funding
Current Stage
Public CompanyTotal Funding
$13.07B2025-05-30Post Ipo Debt· $5B
2025-03-03Post Ipo Debt· $1.25B
2024-03-11Post Ipo Debt· $2.25B
Leadership Team
Jim Rechtin
CEO and President
Colin Drylie
Senior Vice President, Experience Transformation
Recent News
2026-01-14
2026-01-13
2026-01-09
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