Senior Software Engineer - Elixir

Green Light Cost Management•Scottsdale, AZ

About The Position

Green Light is a healthcare technology company focused on helping health plan dollars go as far as possible. Our systems operate on large-scale healthcare data and require high reliability, correctness, and performance. We are hiring a Senior Software Engineer to design, build, and operate production systems using an Elixir-based stack. This role is ideal for engineers who prefer server-driven architecture, value system simplicity, and enjoy solving complex problems under real-world constraints. This is a full-stack role. You will have significant ownership over system design, performance, and reliability, and will help shape the long-term technical direction of the platform.

Requirements

Strong production experience with Elixir, including OTP and BEAM fundamentals
Experience building applications with Phoenix
Experience with Git-based version control workflows and source code management platforms, including branching strategies and merge/pull request processes
Familiarity with agile development practices, including sprint planning, backlog refinement, and iterative delivery
Experience working with CI/CD pipelines - maintaining, troubleshooting, and supporting automated build and deployment workflows
Ability to write clear, well-scoped tickets and manage work items throughout the development lifecycle
Experience designing and operating distributed systems or high-reliability services
Experience working with relational databases in production environments
Strong understanding of functional programming principles
Experience building APIs and backend systems
Experience conducting peer code reviews and providing constructive, actionable feedback
Ability to reason about performance, concurrency, and system trade-offs
Comfortable owning production systems, including incident response
Experience working in Linux-based or containerized environments, including Docker

Nice To Haves

LiveView experience
Experience working with very large datasets or data-intensive systems
Familiarity with observability tooling (metrics, tracing, logging)
Experience in healthcare or other regulated domains
Exposure to interoperability standards (e.g., claims, EDI, HL7, FHIR)

Responsibilities

Design, build, and operate production systems using Elixir, OTP, and Phoenix
Own services end-to-end: architecture, implementation, deployment, and production support
Build interactive user interfaces
Design and evolve systems for high-throughput data processing
Work with relational database systems
Improve system performance, observability, and reliability in production
Participate in incident response, debugging, and root cause analysis
Contribute to architectural decisions with a focus on long-term maintainability
Collaborate across engineering, product, and operations to deliver high-impact features
Mentor engineers and contribute to a strong engineering culture
Apply secure coding practices and ensure systems meet healthcare data privacy and security requirements