Senior .NET Backend Engineer - API, CQRS & Real-Time

Veriipro; New York (NY); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Veriipro is seeking a senior software engineer to drive modern web applications using ASP.NET Core Web API on IIS, EF Core migrations, and a domain-driven design approach. You will implement RESTful, versioned APIs with contract-first design, while leveraging CQRS, MediatR, Hangfire, and real-time SignalR updates.

The role requires 5+ years of Angular frontend work, RxJS, NgRx for state management, and a strong UX sensibility to align with legacy screens.

Qualifications

• Experience with ASP.NET Core Web API on IIS and EF Core migrations.
• Strong understanding of Domain-Driven Design with aggregates, domain events, and anti-corruption layers.
• Deep API design expertise: RESTful, contract-first, versioned, paginated; familiarity with API Gateway/BFF patterns.
• Proficient with CQRS patterns using MediatR; background jobs with Hangfire; real-time updates via SignalR.
• Extensive Angular frontend experience (5+ years) and proficiency with RxJS, and NgRx for state management.
• Strong UX sensibility; collaborate with SMEs and align with legacy interfaces.
• Advanced SQL Server experience (5+ years) including performance tuning, 3NF+ normalization, partitioning and archival strategies; read/write separation.
• Experience with scalable schema design, indexing (clustered/covering), and temporal tables.
• Exposure to distributed systems and messaging at production depth; Kafka and RabbitMQ; patterns like transactional outbox, saga, idempotency.
• Resilience patterns: circuit breakers, retries with backoff, bulkhead isolation; event-driven architecture; contract-first API design.

Skills

ASP.NET Core Web API

IIS

Entity Framework Core

Domain-Driven Design

API design (RESTful, versioned)

CQRS (MediatR)

Hangfire

SignalR

Angular

RxJS

NgRx

SQL Server

Database performance tuning

Partitioning and archival strategies

Read/write separation

Event-driven architecture

Distributed messaging (Kafka/RabbitMQ)

SRE/resilience patterns (circuit-break

Job description

Veriipro is seeking a senior software engineer to drive modern web applications using ASP.NET Core Web API on IIS, EF Core migrations, and a domain-driven design approach. You will implement RESTful, versioned APIs with contract-first design, while leveraging CQRS, MediatR, Hangfire, and real-time SignalR updates.

The role requires 5+ years of Angular frontend work, RxJS, NgRx for state management, and a strong UX sensibility to align with legacy screens.