Full-Stack .NET/Angular/AWS Developer

Full-Stack .NET/Angular/AWS Developer
Summary
Our client is seeking a Developer to design and build full-stack enterprise Web applications from an on-premises engineering center, delivered to AWS Cloud.  This developer will own features end-to-end - from database schema and C# service layer through Angular UI and drive AI-assisted engineering practices (GitHub Copilot, Copilot Chat, prompt-driven development), incorporating SOLID design, clean architecture, and secure, scalable Cloud-native systems.
Responsibilities

• Design and build production-grade full-stack Web applications using C#/.NET 8+, ASP.NET Core Web API, Entity Framework Core, and Angular 17+.
• Model, tune, and evolve relational schemas in SQL Server/PostgreSQL and integrate with Aurora/RDS in AWS.
• Architect for AWS deployment including API Gateway, Lambda, ECS/EKS on Fargate, S3, SQS/SNS, EventBridge, Secrets Manager, CloudWatch, and KMS.
• Apply SOLID, Clean Architecture, and Domain-Driven Design principles; enforce them through code reviews and pair programming.
• Drive AI-assisted development across the team including GitHub Copilot/Copilot Chat, prompt libraries, code-generation guardrails, secure prompt patterns, and test generation.
• Integrate LLM-powered capabilities into applications (chat, summarization, classification, RAG) via Azure OpenAI/AWS Bedrock; wire PII/PCI/PHI guardrails at the prompt boundary.
• Write and maintain unit, integration, and contract tests (xUnit.net/NUnit, Jasmine/Karma, Playwright) while targeting 80%+ coverage on core services.
• Own CI/CD in Azure DevOps or GitHub Actions with Build -> Test -> Security Scan -> Deploy to AWS via CDK or Terraform.
• Instrument with OpenTelemetry; publish metrics/traces to CloudWatch + Managed Grafana.
• Partner with architects, product owners, and QA to break epics into deliverable sprint work; mentor 2-4 mid-level engineers.
• Participate in on-call rotation for owned services (business-hours primary, off-hours secondary).

Requirements

• 8+ years professional software engineering; 5+ years on C#/.NET production applications.
• Strong ASP.NET Core Web API and Entity Framework Core skills including async/await, dependency injection, minimal APIs, and middleware pipeline.
• Angular 15+ production experience including components, RxJS, NgRx or signals, standalone components, reactive forms, lazy-loaded modules, and unit testing.
• Deep relational database skills including schema design, indexing, query tuning, execution plans, stored procedures, migrations.
• Experience in SQL Server and PostgreSQL or MySQL.
• Practical AWS Cloud experience deploying real workloads including IAM, VPC, API Gateway, Lambda or ECS/EKS, RDS/Aurora, S3, SQS/SNS, CloudWatch, Secrets Manager, KMS.
• Demonstrable command of SOLID principles, design patterns (Repository, CQRS, Mediator, Strategy, Factory), and Clean Architecture Layering.
• Fluency in AI-assisted development using GitHub Copilot/Copilot Chat daily as a productivity tool including writing effective prompts, evaluating suggestions critically, generating tests, refactoring, and documenting via AI; ability to coach others in the same.
• Experience integrating with LLM APIs (Azure OpenAI, AWS Bedrock, or OpenAI) and applying safety patterns (input validation, PII redaction, output filtering, prompt-injection defenses).
• Strong Git workflow, code review discipline, and comfort with trunk-based or GitFlow branching.
• Excellent written and verbal communication; ability to write design docs, ADRs, and runbooks.

Preferred

• AWS certification (Developer Associate, Solutions Architect Associate, or higher).
• Hands-on experience with Docker + Kubernetes (EKS, Helm).
• Experience with the following:
  • IaC with AWS CDK (TypeScript/C#) or Terraform;
  • Event-driven architecture (EventBridge, Kafka/MSK, Kinesis);
  • Micro-front-end or module federation;
  • Vector databases (pgvector, OpenSearch, Pinecone) and RAG pipelines.
• Regulated-industry background (banking, healthcare, insurance) with awareness of SOC 2, PCI-DSS, HIPAA constraints.
• Contributions to open-source .NET or Angular projects.