Senior Software Engineer

We are looking for a Software Engineer with a strong product mindset and test-driven development (TDD) background to join our consumer-directed healthcare platform engineering team. You will support and enhance our existing legacy code base while helping to design and build next-generation, cloud-native services. This role goes beyond writing code for a requirement spec; we need an engineer who understands the business value behind every feature, collaborates closely with product and stakeholders, and takes end-to-end ownership of outcomes. Modern product-minded engineers ask why decisions are made, propose ideas, and build with empathy for users. They contribute to product tradeoffs and actively shape what gets built. Our platform currently operates on a legacy system (. NET and SQL Server stack) with business logic implemented in stored procedures. We are embarking on a multiyear modernization journey to decompose this legacy product into microservices based on domain-driven design and deploy them on Azure.
Responsibilities:
Maintain and enhance the existing ASP. NET/C# and SQL Server code base, including researching and debugging stored procedures and TSQL.
Analyze, design, and develop tests and test automation suites to ensure continued functionality during maintenance.
Document each aspect of the system as a reference for future upgrades and maintenance.
Collaborate on domain decomposition, domain modeling, and domain-driven design (DDD) for new services.
Design, implement, and deploy microservices in C#/. NET on Azure with RESTful APIs and event-driven patterns.
Use Azure PaaS services (App Service, Service Bus, SQL Database) and support eventual domain-based databases.
Ensure interoperability and data consistency between the legacy system and microservices during transition.
Champion test-driven development and write automated unit, integration, and regression tests.
Leverage AI-assisted tools for code generation, test case generation, and documentation.
Run code reviews, static analysis, and refactoring sessions to improve code quality.
Actively engage with product managers, product owners, and business stakeholders to understand why features are being built, propose alternative approaches, and weigh engineering/product tradeoffs.
Think beyond the task at hand to deeply understand the purpose and business goals.
Work cross-functionally with quality assurance, infrastructure, design, and operations to deliver coherent solutions.
Take end-to-end ownership for designing, building, and delivering features.
Understand that it is not done till a customer has received value.
Provide ongoing maintenance, support, and enhancements in existing systems and platforms.
Communicate progress, raise risks early, and drive resolutions.
Continuous improvement: Recommend and implement improvements to engineering processes, architecture, and performance.
Stay current on best practices in microservices, cloud engineering, and AI in software engineering.
Mentor peers on test-driven development, DDD and software craftsmanship.
Requirements:
7+ years of professional software engineering experience at a software product company (building software products sold to businesses or consumers); services/consultancy company backgrounds will only be considered if they involve product engineering in healthcare payments or similar domains.
Strong test-driven development (TDD) background with demonstrated experience writing unit and integration tests and using test automation suites.
Proficiency in C#/. NET and database programming, including PL/SQL, with experience working with stored procedures.
Experience with microservices architecture and event-driven architectures.
Experience deploying services to Azure or other cloud platforms and with modern DevOps practices (CI/CD pipelines, containerization, infrastructure as code).
Demonstrated ability to read and understand legacy code (PL/SQL, C#, stored procedures) through code reviews, existing test suites, and AI-powered discovery.
Excellent communication and presentation skills; ability to collaborate across functional areas and translate technical topics into business language.
Bachelor's or master's degree in computer science, engineering, or a related field.
Experience migrating monolithic applications to microservices using DDD.
Familiarity with healthcare or payment processing domains.
Knowledge of event-driven architecture, messaging systems (e. g., Azure Service Bus), and container orchestration (Kubernetes/AKS).
Experience using generative AI for code generation and documentation.

Experience
7-11 yrs