Senior Software Engineer

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$/yr - $/yr

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.

• 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

• 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 (No
  
  SQL, 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
• Strong knowledge of IHE profiles, FHIR, and other healthcare data exchange standards is a significant plus
• Front-end development experience with modern JavaScript/Type Script frameworks is a plus but not required
• Bachelor’s degree or equivalent experience in a technical field

• Medical, Dental, and Vision benefits
• Employer-paid Life and LTD
• 401k w/ matching – once eligibility is met
• Work/life balance
• Paid Volunteer Program
• Flexible working hours
• Unlimited PTO
• Remote work options
• Employee Discounts
• Parental Leave

ELLKAY operates as a hybrid workplace, offering flexibility between in-office and remote work. We prioritize collaboration and a culture that supports work-life balance. For those not within 40 miles of an office, we are open to considering remote work for candidates whose skills and experience strongly align with the role.

For more information on our company, visit

ELLKAY LLC is a Smoke-Free Workplace and an equal employment opportunity employer. ELLKAY prohibits discrimination and harassment of any type and ensures equal opportunity regardless of race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by law.