We’re partnered with a major healthcare technology organization modernizing its data infrastructure and application stack. They’re seeking a Senior Software Engineer (C#/.NET) who excels in designing and scaling backend systems that feed and consume high-volume data pipelines.
If you enjoy solving complex integration problems, building reliable APIs, and writing clean, testable code that powers data-driven decisions, this is your kind of role.
What You’ll Do
- Design, build, and optimize backend APIs and microservices using .NET Core / C# to support near-real-time and batch data ingestion.
- Develop and maintain scalable, high-transaction services integrated with cloud data platforms like Snowflake.
- Partner with data engineering teams to align application output with data warehouse development, ETL/ELT, and OLAP models.
- Implement unit, integration, and end-to-end tests as part of a test-driven development (TDD) culture.
- Collaborate with QA and DevOps engineers to maintain continuous testing and CI/CD automation.
- Contribute to architecture decisions, emphasizing performance, reliability, and data quality.
- Mentor junior engineers on API best practices, clean code, and modern engineering standards.
- Participate in production support/on-call rotations for critical data-driven applications (healthcare data doesn’t sleep).
What You Bring - 5+ years of professional software engineering experience with C#/.NET Core in cloud-based environments (Azure preferred).
- Proven success building and maintaining data-intensive or high-transaction systems in production.
- Strong grasp of RESTful design, asynchronous messaging, and distributed systems.
- Strong command of core SQL and relational database development (T-SQL, query optimization, indexing, stored procedures, and schema design).
- Functional understanding of data warehouse / data lake concepts, ETL/ELT patterns, and OLAP/Snowflake SQL (conceptual knowledge expected; hands-on a plus).
- Commitment to automated testing, TDD/BDD, and CI/CD best practices.
- Excellent problem-solving and communication skills; capable of bridging application, data, and infrastructure teams.
Bonus Points For - Hands-on experience with Snowflake, Azure Data Factory, Fivetran, or other tools modern tools used in modern cloud-based data engineering.
- Experience with NoSQL or document-based data stores (Cosmos DB, MongoDB, DynamoDB) for unstructured or high-velocity data use cases.
- Exposure to event streaming (Kafka, Azure Event Hub, RabbitMQ).
- Experience with QA automation frameworks (xUnit, NUnit, Selenium, Postman, Playwright).
- Familiarity with BI tool integration (Tableau, Sigma).
- Understanding of healthcare data standards (FHIR, HL7, HIPAA compliance).
Why Join
You’ll be a key player in transforming legacy healthcare systems into real-time, data-driven architectures. This role combines modern backend engineering, cloud integration, and test-first discipline. Your work will directly shape how critical data moves through one of Arizona’s most trusted healthcare networks.
Determining compensation for this role (and others) at Vaco/Highspring depends upon a wide array of factors including but not limited to the individual’s skill sets, experience and training, licensure and certifications, office location and other geographic considerations, as well as other business and organizational needs. With that said, as required by local law in geographies that require salary range disclosure, Vaco/Highspring notes the salary range for the role is noted in this job posting. The individual may also be eligible for discretionary bonuses, and can participate in medical, dental, and vision benefits as well as the company’s 401(k) retirement plan.
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