Senior C#/.NET Engineer - EF Core & PostgreSQL Lead

Zenosys; Hamilton (NJ); Híbrido; USD 140 000 - 190 000; Tempo integral

Resumo da oferta

Dice is seeking a Lead/Principal C#/.NET Engineer in Hamilton, NJ to modernize a mission-critical benefits system. You will refactor COBOL-derived C# code into clean, high-performance .NET, define EF Core data access against PostgreSQL, and establish engineering standards while safeguarding functional equivalence to the legacy system.

The role demands deep C#/.NET expertise, REST API design, unit testing, and strong leadership.

Qualificações

• 12-15 years of professional C#/.NET software engineering, including senior/lead responsibilities.
• Deep expertise in C# and the .NET platform (Framework and Core), including async programming and memory/performance optimization.
• Expert-level EF Core: modeling, migrations, query optimization, transactions, concurrency.
• Strong relational database skills; PostgreSQL strongly preferred (Oracle/SQL Server acceptable).
• ASP.NET Core Web API design (REST) for front-end integration.
• SOLID, design patterns, domain modeling, layered/clean architecture, DI.
• Testing discipline: unit/integration/regression testing frameworks; TDD/mocking.
• Git, CI/CD, and static code analysis (SonarQube).
• Proven ability to read and refactor large, unfamiliar codebases.
• Attention to correctness in financial/benefit calculations.

Responsabilidades

• Refactor COBOL-derived C# into idiomatic, maintainable .NET code.
• Design and implement service layers, domain models, and ASP.NET Core Web APIs.
• Refactor legacy batch/procedural logic into testable .NET with exact decimal arithmetic.
• Own data-access architecture using EF Core against PostgreSQL (Npgsql).
• Optimize EF Core queries to meet performance SLAs on high-volume batch workloads.
• Define and enforce coding standards, architecture patterns, and refactoring guidelines.
• Mentor mid/junior developers; perform code reviews; drive quality.
• Ensure unit/regression tests and CI/CD gates are met; maintain traceability to legacy logic.

Conhecimentos

C# / .NET

EF Core

ASP.NET Core

REST APIs

Unit Testing

CI/CD

Mentoring

Design Patterns

Performance Tuning

TDD / Moq

Ferramentas

Npgsql

AWS

Git

CodeBuild/CodePipeline

SonarQube

Descrição da oferta de emprego

Dice is seeking a Lead/Principal C#/.NET Engineer in Hamilton, NJ to modernize a mission-critical benefits system. You will refactor COBOL-derived C# code into clean, high-performance .NET, define EF Core data access against PostgreSQL, and establish engineering standards while safeguarding functional equivalence to the legacy system.

The role demands deep C#/.NET expertise, REST API design, unit testing, and strong leadership.