Senior Software Engineer – Full Stack

Become a part of our caring community The Senior Full Stack Engineer – Platform & Architecture is a hands-on senior engineer role with broad scope across the full stack (user experience, front-end, APIs/services, integrations, database, and hosting) for the Wisconsin Medicaid Market. The role emphasizes end-to-end ownership—from building intuitive, accessible user experiences to designing reliable back-end services—while driving platform consistency and mentoring engineers to deliver secure, scalable solutions.This position blends day-to-day full stack engineering with technical leadership. It involves architecture-minded decision making, modernizing legacy systems, and reducing technical debt. Additionally, it establishes consistent patterns across UI, API, data, and integration layers for two independent health plan technology stacks. The role promotes modern engineering practices, including CI/CD, infrastructure and security as code, automated testing, accessibility, and observability. It also expects responsible use of Humana-approved AI and code generation tools to accelerate delivery and improve quality.The Senior Full Stack Engineer – Platform & Architecture is responsible for hands-on architecture, design, development, and modernization of applications and platforms that support the Wisconsin Medicaid Market. This role operates with a high degree of autonomy and trust, owning solutions end-to-end across the full stack rather than confining itself to a single application or technology area.The Wisconsin Medicaid Market IT team functions as a highly empowered, end-to-end technology organization supporting two acquired health plans with independent core administration systems and technology stacks. As a result, this role works across the full spectrum of core platforms and supporting systems. It collaborates with peers, enterprise architecture, and platform partners to define technical direction, align to enterprise standards where appropriate, and reduce system complexity and operational burden.Unlike some enterprise roles, this position regularly wears multiple hats—building and modernizing software across user experience, front-end, back-end, database, integration, and hosting layers; contributing architectural vision; addressing technical debt; and improving reliability and scalability across environments. The engineer will lead by example through hands-on delivery, strong code review practices, and mentoring. Additionally, they will drive software-driven automation, focusing on CI/CD, infrastructure, and security as code. They will also adopt cloud-native patterns, such as containers and orchestration, where they fit the market's needs. The role will also champion practical, responsible use of Humana-approved AI-assisted development and code generation tools. These tools include Google-based tooling in Humana's standard stack. The goal is to increase throughput and strengthen code quality. Additionally, the role will ensure solutions meet usability and accessibility expectations, particularly where customer or operational user interfaces are involved.Success in this role is driven not only by technical outcomes, but also by how the individual shows up: bringing curiosity, ownership, collaboration, and a growth mindset. This role is well suited for a senior engineer. The ideal candidate can translate ambiguous requirements into pragmatic designs, communicate tradeoffs to technical and non-technical stakeholders, mentor teammates through design and delivery, and progressively take on broader platform and architecture responsibility while remaining hands-on.Team Culture & ExpectationsOn the Wisconsin Medicaid Market IT team, how you show up is as important as what you accomplish. We value ownership, curiosity, collaboration, and a strong desire to learn and make a meaningful difference. Team members are trusted to operate with autonomy, take accountability for outcomes, and work across domains to solve problems end‑to‑end.A growth mindset, comfort operating in ambiguity, and willingness to continuously learn new technologies and approaches are essential for success in this role—including embracing and effectively leveraging Humana‑approved AI‑assisted development and code generation as a standard part of how the team delivers high‑quality outcomes.Use your skills to make an impact  Required Skills & CapabilitiesFull Stack Application & Platform EngineeringDeep experience building and modernizing applications across the full stack, including user experience/front-end, APIs and back-end services, data, integrations, and hosting. Strong experience with the Microsoft technology stack (e.g., .NET, SQL Server, Windows-based services) and cloud-hosted solutions (especially Azure). Comfortable working across application, integration, and platform layers in complex environments, with a track record of owning features end-to-end from UI through production operations.Front-End / Web Engineering (UI, Accessibility, Performance)Strong experience building and maintaining modern web user interfaces, including component-based UI development, state management, and integration with back-end APIs. Knowledge of accessibility best practices (e.g., WCAG-aligned design), secure front-end patterns, and performance optimization. Ability to collaborate with stakeholders to translate workflows into clear, usable experiences.API Design, Integration Patterns & Data ContractsExperience designing and evolving APIs and service interfaces (REST preferred; event-driven patterns where appropriate), defining durable data contracts, and integrating with third-party/vendor and enterprise services. Understands authentication/authorization flows, versioning, backward compatibility, and strategies for minimizing integration brittleness across systems.Secure Engineering Across the Stack (AppSec)Demonstrated ability to apply secure-by-design practices across UI, API, and data layers, including input validation, secrets man