Software Development Engineer - Java and .Net

Location: Greenwood Village, CO
Salary: $70.00 USD Hourly - $80.00 USD Hourly
Description:

Job Title: Software Development Engineer - Java And .Net

Location: Greenwood Village, CO (Onsite)

Duration: Contract To Hire

 

Job Description:

A Software Development Engineer designs, develops, tests, installs, and maintains systems, applications, networks, and/or telecom and related processes to meet the functional objectives of the business. Ensures adherence to established technology standards and consults with senior leadership on technology solutions. Supports existing systems and may be responsible for leading technical aspects of a project.

 

The ideal candidate is proficient in Java, Spring/Spring Security/Spring Boot, SQL, as well as being familiar with JavaScript, CSS, and HTML elements.

 

They will also need to have experience with .NET Development and is responsible for designing, developing, testing, and maintaining applications built on Microsoft’s .NET framework using languages such as C#, VB.NET, and F#.

This role works closely with product owners, architects, and QA teams to deliver secure, scalable, and reliable software solutions.

 

This role will start out mainly in Java and they will be responsible for getting other team members up to speed on C# and the .Net framework. The work will eventually transition into more C#, .Net project work as we bridge the gap between our legacy applications and our cloud modernization effort.

 

Key Responsibilities

• Design, build, and maintain applications using Java, Spring/Spring Boot/Spring Security as well as C#, .NET Framework, .NET Core, or .NET 6/7+
• Develop RESTful APIs, microservices, and backend services
• Integrate applications with databases using Entity Framework (EF) / EF Core and SQL Server
• Collaborate with cross-functional teams using Agile/Scrum methodologies
• Write clean, maintainable, and scalable code following industry best practices
• Conduct code reviews, troubleshoot issues, and perform performance optimizations
• Maintain and enhance CI/CD pipelines using tools such as GitHub Actions, Azure DevOps, etc.
• Ensure application security using best practices such as authentication, authorization, and OWASP guidelines
• Create documentation and participate in architectural discussions

 

Required Skills & Qualifications

• 6+ years of back-end development experience
• Strong proficiency in Java as well as C# and the .NET ecosystem
• Experience with Spring/Spring Boot/Spring Security
• Experience with ASP.NET Core, MVC, and Web API
• Working knowledge of SQL Server, Entity Framework, LINQ
• Familiarity with Azure (App Services, Functions, Storage, Key Vault)
• Knowledge of OOP, SOLID principles, and design patterns
• Experience with unit testing (xUnit, MSTest, NUnit)
• Strong understanding of REST architecture
• Proficiency with Git and CI/CD
• Excellent debugging and problem‑solving skills
• Preferred Qualifications
• Experience with microservices architecture
• Knowledge of Docker and containerized deployments
• Exposure to Blazor, React, or Angular
• Experience with message brokers like Azure Service Bus, RabbitMQ, or Kafka

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