.NET Developer

Quantum Technologies. LLC; Richmond (VA); On-site; USD 90,000 - 130,000; Full time

Job summary

Quantum Technologies. LLC in Richmond, VA is seeking a hands-on NET Software Developer to join our application development team. You will contribute across projects, enhance existing systems, integrate with third-party vendors, and participate in modernization efforts.

You should be a strong coder in C#, comfortable with database work, and able to work independently on complex systems and technical discussions.

Qualifications

• 5+ years of professional experience as a .NET Developer.
• Strong proficiency in C# (primary language).
• Experience with .NET Framework 4.5+.
• Exposure to modern .NET (.NET Core / .NET 6+) is preferred.
• Solid experience with Oracle databases, including stored procedures and SQL performance tuning.
• Experience developing and consuming APIs.
• Comfortable working in database-heavy systems without EF.

Responsibilities

• Design, develop, and maintain applications using C# and the Microsoft .NET stack.
• .NET Core / modern .NET (preferred).
• Develop and support RESTful APIs and system integrations.
• Write, analyze, and maintain Oracle SQL and PL/SQL.
• Tune and optimize stored procedures and SQL queries for performance.
• Collaborate with other developers to understand existing systems and contribute improvements.
• Participate in code reviews, testing, debugging, and deployment activities.
• Collaborate with internal teams and third-party vendors to support integrations.

Skills

C#

RESTful APIs

Backend development

SQL

.NET Framework 4.5+

Tools

Oracle SQL

PL/SQL

Azure

Angular

Azure DevOps/TFS

Job description

Utilities/ Energy,Aerospace/ Airlines,Media/ Entertainment

Work Authorization:

We are seeking a .NET Software Developerto join a clients application development team due to increasing workload and ongoing initiatives. This role is intended to addadditional development capacityand will contribute across a range of projects, including enhancements to existing systems, integrations with third-party vendors, and modernization efforts.

This is ahands-on development role, ideal for someone who is a strong coder inC#, comfortable working deep in the database, and adaptable enough to support different parts of the application stack as priorities shift. While this role does not include formal leadership or architecture ownership, the developer should be capable of working independently, understanding complex systems, and contributing meaningfully to technical discussions.

What You’ll Be Working On

• Enhancements and maintenance ofbusiness-critical operational applications
• Backend systems that handlelarge volumes of dataand complex business logic
• API integrations between internal applications andthird-party vendor systems
• Occasional front-end work depending on project needs
• Existing applications built on a mix oflegacy and modern .NET technologies
• Codebases where performance, reliability, and efficiency are critical

Because business priorities can change quickly, the work may vary from project to project, requiring awell-rounded developerrather than a narrowly focused specialist.

Key Responsibilities

• Design, develop, and maintain applications usingC# and the Microsoft .NET stack
• .NET Core / modern .NET (preferred)
• Develop and supportRESTful APIsand system integrations
• Write, analyze, and maintainOracle SQL and PL/SQL, including:
• Large, complex stored procedures
• Embedded business logic
• Tune and optimize stored procedures and SQL queries to improve performance
• Analyze joins, execution plans, and query structure
• Work closely with other developers to understand existing systems and contribute improvements
• Participate in code reviews, testing, debugging, and deployment activities
• Collaborate with internal teams andthird-party vendorsto support application integrations
• Follow established development standards while helping improve code quality and performance

Required Qualifications

• 5+ years of professional experience as a.NET Developer
• Strong proficiency inC#(primary language)
• Experience working with.NET Framework 4.5+
• Exposure tomodern .NET (.NET Core / .NET 6+)is strongly preferred
• Solid experience withOracle databases, including:
• Writing and maintaining complex stored procedures
• SQL query analysis and performance tuning
• Strong understanding ofbackend business logic layers
• Experience developing and consumingAPIs
• Comfortable working in environmentswithout Entity Framework(database-heavy systems)
• Ability to read, understand, and improve large, existing codebases

Preferred / Nice-to-Have Skills

• Front-end experience withAngular (4+), React, or similar frameworks
• Exposure toAzureand cloud-based integrations (not required to be a cloud expert)
• Experience working withthird-party vendorsor external system integrations
• Familiarity with design patterns and application architecture concepts
• CI/CD experience usingTFS or Azure DevOps

What This Role Is

• Focused on execution, problem-solving, and contributing to active projects
• Backend-heavy withstrong database and performance requirements
• Flexible across the stack based on business needs
• An opportunity to grow technical breadth across integrations, data, and cloud exposure

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.