About Alegeus
Alegeus is the market leader in consumer-directed healthcare (CDH) solutions, powering millions of consumer benefit accounts including FSAs, HSAs, HRAs, dependent care and wellness programs through a modern SaaS and payments platform.
We are investing aggressively in modernization, API-first integration, real-time data access and AI-enabled automation to redefine how consumers save and spend on healthcare. At Alegeus, we empower our teams to push the boundaries of what’s possible in fintech and healthtech, creating impactful, scalable solutions that improve lives.
Role summary
We are looking for a Senior Software Engineer to join our WCA engineering team. This role is ideal for a seasoned engineer with strong technical depth, a passion for building scalable systems, and a desire to shape modern, cloud-native architectures.
You will contribute to system design, build robust APIs and services, and collaborate across teams to deliver high-quality solutions. Beyond coding, this role requires a solid understanding of business context, ownership of outcomes,
and a continuous drive to innovate and improve.
Key responsibilities
Architecture & system design
Contribute to system design and architecture with a focus on scalability, performance and fault tolerance.
Apply domain-driven design (DDD) principles to model complex domains and align technical solutions with business needs.
Design next-generation APIs that are secure, extensible and optimized for integration across platforms.
Development & engineering excellence
Write efficient, maintainable code using C#/.NET Core (3.1/5+) and ASP.NET Web APIs.
Build scalable and secure services using RESTful APIs and gRPC.
Champion API-first development with strong contract design, performance optimization and developer experience.
Ensure high reusability and scalability within a microservices ecosystem.
Strong knowledge in MS-SQL.
Microservices & event-driven systems
Design and develop microservices using modern arch