Java/.NET Developer (no C2C)

JOB TITLE: Java/.NET DeveloperLOCATION: Omaha, NEINDUSTRY: FinancialJOB SUMMARY: Theoris is looking for someone to develop, support and potentially lead technical aspects of a project for this onsite role in Greenwood, Village. The ideal candidate is proficient in Java, Spring/Spring Security/Spring Boot, SQL, as well as being familiar with JavaScript, CSS, and HTML. 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 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.REQUIREMENTS:6+ years of back-end development experience in Java and C#/.net core, MVCExperience with Spring/Spring Boot/Spring Security5+ years of API development experience (REST)Working knowledge of SQL Server, Entity Framework, LINQFamiliarity with Azure (App Services, Functions, Storage, Key Vault)Knowledge of OOP, SOLID principles, and design patternsProficiency with Git and CI/CDExcellent debugging and problem‐solving skills DESIRED:Experience with microservices architectureKnowledge of Docker and containerized deploymentsExposure to Blazor, React, or AngularExperience with message brokers like Azure Service Bus, RabbitMQ, or KafkaRESPONSIBILITIES: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 servicesIntegrate applications with databases using Entity Framework (EF) / EF Core and SQL ServerCollaborate with cross-functional teams using Agile/Scrum methodologiesWrite clean, maintainable, and scalable code following industry best practicesConduct code reviews, troubleshoot issues, and perform performance optimizationsMaintain 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 guidelinesCreate documentation and participate in architectural discussions***For this position the person may need to get a government clearance, therefore open to US Citizen and Greencard Holders. Only W2/hourly. No C2C.About Theoris: Our goal is to Fuel Your Career! As a Theoris team member, you join a culture based on people-centered values and an environment that fosters both personal and professional growth. We build long-term relationships with our clients and our consultants. With over 30 years of building strong relationships in the industry, we’re uniquely positioned to make the right connections. This knowledge is used to find the right job placement. Our recruiting teams are experts dedicated to the information technology and engineering staffing space and are highly respected by our client base.