Principal Full Stack Engineer

Principal Full Stack EngineerHybrid Onsite Every Other Week in Durham, NCOur client seeks a Principal Full Stack Engineer to support critical digital business platforms across a broad application portfolio. The role combines hands-on Java development, modernization of legacy .NET services, production support, and cloud integration. You will troubleshoot complex issues, participate in on-call rotations, and collaborate with cross-functional teams to deliver scalable, high-performing solutions.Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.Rate: $70.00 to $85.00/hr. w2Responsibilities:Provide Level 3 application support, root cause analysis, and incident resolution for mid-tier and digital shared services.Participate in weekly on-call rotation and ensure production stability.Design, build, and enhance services and APIs using Java and Spring Boot, with exposure to REST and SOAP.Support and modernize.NET applications, including updates and scripting to improve supportability.Triage build and deploy issues, manage source code branch requests, and partner with DBAs, product managers, and engineers.Implement logging, monitoring, and alerting using tools such as Splunk and Kibana, and write SQL queries.Contribute to DevOps pipelines and automation using tools such as Jenkins and Stash.Leverage approved AI tools to improve support and development workflows.Document troubleshooting steps and maintain an accurate knowledge base.Assist with cloud enablement and infrastructure delivery on AWS and Azure.Experience Requirements:6-10 years of professional software experience spanning support, design, and maintenance of infrastructure and services.Expert Java development experience for new feature delivery in modern platforms.Ability to update, script, and modernize.NET applications; capability to read and make minor fixes in C# and C++.Background supporting web services across multiple tech stacks, including Java and .NET.Experience with cloud platforms such as Azure and AWS.Proficiency with logging, monitoring, SQL, and CI/CD automation tools.Demonstrated ownership of L3 incidents, RCA delivery, and customer service.Experience translating business requirements into technical tasks within Agile teams.Strong collaboration skills across stakeholders and technical teams.Education Requirements:BS degree in Computer Science or a related field, or equivalent experience.Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range. W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.