Senior Software Engineer (C#/.Net)

CyberCoders; Davis (CA); On-site; USD 120,000 - 190,000; Full time

Benefits offered by this job

Medical

Dental

Vision

401k with match

PTO

Job summary

CyberCoders seeks a Senior Software Engineer in the Davis, CA area to design, build and maintain scalable back-end services and front-end integration using C#/.NET and TypeScript/React. You will own components across services, drive architecture, mentor engineers, and contribute to AI-enabled healthcare applications while ensuring HIPAA compliance.

You will collaborate with product and clinical stakeholders, implement secure coding practices, and participate in CI/CD, testing and on-call

Qualifications

• Strong professional experience with C# and the .NET ecosystem including APIs and services.
• Proficient in TypeScript and modern JS frameworks; React is a plus.
• 5+ years of professional software engineering experience delivering production systems.
• Experience with SQL databases and data modeling.
• Healthcare domain concepts and HIPAA familiarity desired.
• Experience integrating AI/ML tooling and LLMs; knowledge of RAG and agentic AI helpful.
• Secure coding practices, authentication/authorization, and data privacy.
• Experience with automated testing, CI/CD, observability, and debugging production systems.
• Strong communication and mentoring skills across teams.

Responsibilities

• Design, implement and maintain server-side apps and APIs using C#/.NET for performance and security.
• Develop and maintain front-end features with TypeScript/JavaScript (React).
• Architect end-to-end solutions including data access and business logic with SQL.
• Collaborate with product/design/clinical teams to translate requirements into designs.
• Apply secure development practices to protect PHI and HIPAA compliance.
• Integrate AI features like LLMs, RAG and agentic AI; evaluate trade-offs and safety.
• Ensure code quality via tests, reviews, pair programming, and CI/CD pipelines.
• Mentor mid-level and junior engineers and set technical direction.
• Investigate production issues, capacity planning and on-call involvement.
• Lead technical evaluations, PoCs and vendor selection for AI/data components.

Skills

C#/.NET

TypeScript

React

SQL

AI/ML tooling

CI/CD

Secure coding

Mentoring

Tools

Docker

Kubernetes

Azure

AWS

Job description

Senior Software Engineer (C#/.NET)

Company Overview

We are a healthcare technology company located in the Davis, CA area. We have proudly been in business for over 25 years and have built some of the most innovative technology in the healthcare industry. We are very passionate about improving healthcare and saving lives across the country!

Position Overview

We are seeking a Senior Software Engineer skilled in C#, TypeScript and the .NET platform to design, build and maintain high-quality, scalable software. In this role you will own key components across backend services and front-end integrations, drive architecture and best practices, collaborate with product and clinical stakeholders, and mentor engineers. You will contribute to full-stack solutions that may operate in regulated healthcare environments and leverage modern AI and LLM-based capabilities when applicable.

Key Responsibilities

• Design, implement and maintain server-side applications and APIs using C# and .NET, focusing on performance, scalability and security.
• Develop and maintain front-end features and integrations using TypeScript and JavaScript (including React where applicable).
• Architect and deliver end-to-end solutions, including data access layers, business logic, and integration with SQL and other persistence technologies.
• Collaborate with product, design and clinical teams to translate requirements into technical designs and reliable deliverables.
• Implement secure development practices to protect PHI and support HIPAA compliance when working in healthcare contexts.
• Integrate AI capabilities such as LLMs, retrieval-augmented generation (RAG) and agentic AI components into products, evaluating trade-offs and safety considerations.
• Own code quality through unit and integration tests, code reviews, pair programming, and continuous integration/continuous deployment pipelines.
• Mentor and coach mid-level and junior engineers, set technical direction, and promote engineering best practices and documentation.
• Investigate and resolve production issues, perform capacity planning, and participate in on-call rotation as needed.
• Drive technical evaluations, proof-of-concepts and vendor selection for AI, data and platform components.

Qualifications

• Strong professional experience with C# and the .NET ecosystem (Core/.NET 5+), including building APIs, services and libraries.
• Proficient in TypeScript and modern JavaScript frameworks; hands-on experience with React is a plus.
• 5+ years of professional software engineering experience, with a track record of delivering production systems.
• Experience working with SQL databases and designing efficient data models and queries.
• Familiarity with healthcare domain concepts and regulatory requirements (HIPAA) is highly desirable.
• Experience integrating AI/ML tooling and LLMs into applications; knowledge of RAG patterns and agentic AI approaches is a plus.
• Solid understanding of secure coding practices, authentication/authorization patterns, and data privacy principles.
• Experience with automated testing, CI/CD pipelines, observability, and debugging production systems.
• Strong communication skills, ability to collaborate across disciplines, and experience mentoring other engineers.
• Experience with cloud platforms (Azure or AWS), containerization (Docker/Kubernetes) and microservices architectures is preferred.

Benefits

• Medical
• Dental
• Vision
• 401k w/match
• PTO