Job Description: Senior .NET API Architect Role Overview We are seeking a proactive, detail-oriented .NET API Architect to drive end-to-end technical solutions in a fast-paced environment. This role requires 15+ years of overall IT experience, including 6 to 8 years of specific exposure to API architecture and cloud solutioning. This is a hybrid or on-site position, offering the chance to bridge the gap between business needs and technical execution. You will act as a key individual contributor, collaborating with external partners to build resilient, cloud-native systems. Experience & Job Setup Overall Experience: 15+ years in IT. Specialized Exposure: 8- 10 years in API architecture. Work Location: Indianapolis, Indiana, USA, Hybrid or On-site. Key Responsibilities Architecture & Solutioning: Translate complex business requirements into scalable, high-performing technical solutions. API & Microservices Design: Design and develop robust RESTful services and microservices architectures. System Documentation: Author comprehensive High-Level Design (HLD) and Low-Level Design (LLD) documents. Technical Diagramming: Utilize tools like Lucidchart or Draw.io to map architecture and system workflows. Stakeholder Management: Partner with external stakeholders to integrate third-party systems seamlessly. Independent Problem Solving: Troubleshoot and resolve complex technical issues autonomously. Technical Expertise Core .NET & Database Languages & Frameworks: C#, .NET Core. ORM Tools: Entity Framework. Database Management: PostgreSQL design, query optimization, and performance tuning. AWS Cloud Ecosystem Serverless & Compute: AWS Lambda. Messaging & Integration: SQS, EventBridge. Data & Storage: AWS Glue, Amazon S3. Management & Monitoring: CloudWatch, Parameter Store. DevOps & Advanced Concepts CI/CD Deployment: Harness (or similar configuration management tools). Architectural Patterns: Domain-Driven Design (DDD) and monolithic decomposition strategies. Resiliency Engineering: Implementation of idempotency strategies for fault-tolerant systems. AI-Assisted Development: Hands-on experience with Cursor (or similar AI tools) and Large Language Models (LLMs).