Senior Software Engineer

ELLKAY, LLC

9d•Hybrid

About The Position

ELLKAY is seeking a Senior Software Engineer to play a crucial role in advancing our core healthcare IT systems through the development of scalable and secure software solutions. As a senior individual contributor, this position involves working closely with other engineering team leaders to architect robust backend systems, guide technical direction, and enhance software delivery processes.

Requirements

10+ years of software engineering experience, with a focus on building large-scale, high-throughput distributed systems
Have a balanced, pragmatic approach—able to apply the right level of engineering rigor to meet business needs
Experience designing and scaling API-driven systems with extreme reliability and throughput requirements
Experience with event-driven, queue-backed, and asynchronous processing architectures
Skilled in observability practices including distributed tracing, metrics, and log aggregation
Strong background in Microsoft SQL Server and experience optimizing relational data access
Familiar with other database technologies (NoSQL, distributed databases)
Deep experience with the .NET ecosystem, with exposure to other technical stacks as a plus
Familiar with containerization, cloud-native architectures, and Kubernetes deployment patterns
Strong architectural skills with a focus on reliability, scalability, and performance
Proven ability to lead architecture across multiple systems and teams
Experience writing and optimizing parallel and asynchronous code
Bachelor’s degree or equivalent experience in a technical field

Nice To Haves

Strong knowledge of IHE profiles, FHIR, and other healthcare data exchange standards is a significant plus
Front-end development experience with modern JavaScript/TypeScript frameworks is a plus but not required

Responsibilities

Take a technical leadership role in building and scaling national-scale healthcare data exchange systems
Deliver extremely reliable, scalable, and observable software capable of supporting massive transaction volumes
Lead architecture and implementation of highly scalable, API-driven systems powering healthcare data exchange at scale
Provide practical, balanced technical guidance—considering both engineering best practices and business priorities
Guide design decisions on fault tolerance, throughput optimization, and system resilience
Contribute to CI/CD pipeline improvements to maintain quality while accelerating delivery
Collaborate with product and implementation teams to shape technical execution
Document technical designs, workflows, and release notes for cross-team and customer consumption
Participate in and lead design and code reviews
Mentor engineers through pairing, design discussions, and pull request feedback