Length of Contract Assignment: 9-12 months

Type of Contract: Contract for now – However, may decided to convert a strong performer

BTelecommuting: Mon-Thu on-site; Fri remote

Sponsorship: Since we potentially may convert, then candidates cannot require sponsorship.

Location: On-premise (hybrid) - building cloud-native applications targeting AWS

We are hiring a Software Engineer to design and build enterprise full-stack web applications from our on-premise engineering center, delivered onto AWS Cloud. You 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) across the team. You will be a technical leader on SOLID design, clean architecture, and secure, scalable cloud-native systems.

What You Will Do

• 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: API Gateway, Lambda, ECS/EKS on Fargate, S3, SQS/SNS, EventBridge, Secrets Manager, CloudWatch, 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 - 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 / NUnit, Jasmine / Karma, Playwright); target 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).

Required Skills & Experience

• 8+ years professional software engineering; 5+ years on C# / .NET production applications.
• Strong ASP.NET Core Web API and Entity Framework Core; async/await, dependency injection, minimal APIs, middleware pipeline.
• Angular 15+ production experience: components, RxJS, NgRx or Signals, standalone components, reactive forms, lazy-loaded modules, unit testing.
• Deep relational database skills: schema design, indexing, query tuning, execution plans, stored procedures, migrations. SQL Server and at least one of PostgreSQL / MySQL.
• Practical AWS cloud experience deploying real workloads: 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.
• AI-assisted development fluency: using GitHub Copilot / Copilot Chat daily as a productivity tool - 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 / Nice-to-Have

• AWS certification (Developer Associate, Solutions Architect Associate, or higher).
• Docker + Kubernetes hands-on (EKS, Helm).
• IaC with AWS CDK (TypeScript / C#) or Terraform.
• Event-driven architecture experience (EventBridge, Kafka / MSK, Kinesis).
• Micro-frontend or module-federation experience.
• 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.

ECCO Select is committed to hiring and retaining a diverse workforce. Our policy is to provide equal opportunity to all people without regard to race, color, religion, national origin, ancestry, marital status, veteran status, age, disability, pregnancy, genetic information, citizenship status, sex, sexual orientation, gender identity or any other legally protected category. Veterans of our United States Uniformed Services are specifically encouraged to apply for ECCO Select opportunities.