.Net Developer

Ampstek; New York (NY); On-site; USD 120,000 - 160,000; Full time

Job summary

Ampstek is seeking a senior .NET Backend engineer with 8+ years of experience to build ASP.NET Core Web API on IIS, using EF Core and domain-driven design.

You will design RESTful APIs, implement CQRS with MediatR, Hangfire jobs, and real-time features with SignalR, while collaborating with Angular frontend teams.

The role emphasizes scalable SQL Server schemas, high-volume data, and robust deployment pipelines via IIS, Web Deploy, and Azure DevOps.

Qualifications

• 8+ years of .NET backend experience with ASP.NET Core and EF Core.
• Strong knowledge of DDD, CQRS, and API design patterns.
• Experience with Angular frontend integration and real-time features.

Skills

.NET Backend

ASP.NET Core

Entity Framework

DDD

CQRS

MediatR

Hangfire

SignalR

Angular Frontend

RxJS

NgRx

SQL Server

Schema Design

Performance Tuning

Kafka

RabbitMQ

Azure DevOps

IIS Deployment

PowerShell

Job description

.NET Backend (8+ years)* - ASP.NET Core Web API on IIS; Entity Framework Core (advanced: migrations, temporal tables, schema isolation) - Domain-Driven Design in practice: aggregates, domain events, anti-corruption layers - API design (RESTful, contract-first, versioned, paginated) including API Gateway / BFF patterns - CQRS (MediatR), durable background jobs (Hangfire), real-time push (SignalR)*

Angular Frontend (5+ years)* - Component architecture, lazy-loaded modules, reactive forms, RxJS - State management with NgRx; real-time UI via SignalR/WebSocket - Strong UX sensibility. Able to collaborate with operator SMEs and achieve mental-model parity with legacy screens* SQL Server (5+ years)* - Scalable schema design: high-volume tables, partitioning for growth, archival strategies, read/write separation - Core design craft: normalization (3NF+), schema-per-service, indexing strategies (clustered, filtered, covering), constraints, temporal tables - Performance optimization: Query Store, execution plan analysis, wait statistics, index tuningDistributed

Systems & Messaging (5+ years)* - Kafka/RabbitMQ at production depth: partitioning, consumer groups, exchange types, dead-letter handling, exactly-once semantics, clustering/HA - Patterns: transactional outbox, saga/process manager, idempotent consumers - Resilience: circuit breaker, retry with backoff, bulkhead isolation - Event-driven architecture; contract-first API design# Preferred Skills - SQL Server Service Broker - conversation lifecycle, activation, cross-instance endpoints, cert-based auth - On-prem Azure DevOps pipelines (YAML, self-hosted agents) - IIS deployment automation (Web Deploy / msdeploy) - PowerShell scripting for failover runbooks and environment automation - Exposure to electric utility / OT / safety-critical systems