{"schemaVersion":"jobsearcher.job.v1","id":"893e4a839c52caf621fb60fc","url":"https://jobsearcher.com/jobs/893e4a839c52caf621fb60fc","canonicalUrl":"https://jobsearcher.com/jobs/893e4a839c52caf621fb60fc","title":"Full Stack Backend Developer","description":"job summary:Sr. Software Development Engineer (Onsite)Locations (Strictly Onsite): * Greenwood Village, CO * Berkeley Heights, NJ * Omaha, NEBackground Check: Extensive 6-week process required post-offer.location: Greenwood Village, Coloradojob type: Contract to Permsalary: $70 - 80 per hourwork hours: 8am to 5pmeducation: No Degree Requiredresponsibilities:Key ResponsibilitiesDesign, 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 discussionsqualifications:Required Skills & Qualifications6+ years of back-end development experienceStrong proficiency in Java as well as C# and the .NET ecosystemExperience with Spring/Spring Boot/Spring SecurityExperience with ASP.NET Core, MVC, and Web APIWorking knowledge of SQL Server, Entity Framework, LINQFamiliarity with Azure (App Services, Functions, Storage, Key Vault)Knowledge of OOP, SOLID principles, and design patternsExperience with unit testing (xUnit, MSTest, NUnit)Strong understanding of REST architectureProficiency with Git and CI/CDExcellent debugging and problem?solving skillsPreferred QualificationsExperience with microservices architectureKnowledge of Docker and containerized deploymentsExposure to Blazor, React, or AngularExperience with message brokers like Azure Service Bus, RabbitMQ, or Kafka Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility). This posting is open for thirty (30) days.","company":"Randstad Digital","rawCompany":"randstad digital","city":"Englewood","state":"CO","isRemote":false,"isActive":false,"createdAt":"2026-05-09T15:45:42.384Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Full Stack Backend Developer","description":"job summary:Sr. Software Development Engineer (Onsite)Locations (Strictly Onsite): * Greenwood Village, CO * Berkeley Heights, NJ * Omaha, NEBackground Check: Extensive 6-week process required post-offer.location: Greenwood Village, Coloradojob type: Contract to Permsalary: $70 - 80 per hourwork hours: 8am to 5pmeducation: No Degree Requiredresponsibilities:Key ResponsibilitiesDesign, 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 discussionsqualifications:Required Skills & Qualifications6+ years of back-end development experienceStrong proficiency in Java as well as C# and the .NET ecosystemExperience with Spring/Spring Boot/Spring SecurityExperience with ASP.NET Core, MVC, and Web APIWorking knowledge of SQL Server, Entity Framework, LINQFamiliarity with Azure (App Services, Functions, Storage, Key Vault)Knowledge of OOP, SOLID principles, and design patternsExperience with unit testing (xUnit, MSTest, NUnit)Strong understanding of REST architectureProficiency with Git and CI/CDExcellent debugging and problem?solving skillsPreferred QualificationsExperience with microservices architectureKnowledge of Docker and containerized deploymentsExposure to Blazor, React, or AngularExperience with message brokers like Azure Service Bus, RabbitMQ, or Kafka Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility). 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