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Senior Software Engineer

Eliassen Group

Hybrid 4 days in office in St. Louis, MO

Our client seeks a hands-on Senior Software Engineer to modernize and maintain a mission-critical enterprise application in AWS GovCloud. The role focuses on practical engineering, reliability, and collaboration with architects and scrum teams to deliver scalable microservices and micro-frontend 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: $85.00 to $95.00/hr. w2

JN -082026-108318

Responsibilities
  • Design and implement microservices using Java, Spring Boot, and TypeScript supporting event-driven and RESTful patterns.
  • Build solutions on AWS GovCloud services including ECS or EKS, Lambda, EventBridge, and RDS within microservices and micro-frontend architectures.
  • Reduce technical debt through dependency and framework upgrades with strong test automation.
  • Implement UI test automation and BDD practices to ensure quality.
  • Collaborate with enterprise architects and scrum teams to translate architecture into scalable solutions.
  • Apply reusable patterns and best practices for architectural consistency.
  • Participate in architecture and code reviews and technical discussions aligned with enterprise standards.
  • Document designs and decisions with clear technical writing.
  • Troubleshoot production issues, optimize performance, and deliver robust features.
  • Contribute to both new feature development and ongoing production support in Agile sprints.
Experience Requirements
  • 5+ years of hands-on software engineering experience.
  • Advanced proficiency with Java and the Spring Boot ecosystem.
  • Experience with AWS Cloud services such as ECS or EKS, Lambda, and RDS or Aurora, and IaC tools like CDK or CloudFormation.
  • Experience with Angular. Familiarity with micro-frontend architecture using module federation is a plus.
  • Background in microservices architecture and modernization patterns such as the strangler pattern.
  • Strong technical writing and communication skills.
  • Collaborative approach and effective problem solving in cross-functional teams.
  • Comfort with AI-enabled tools and willingness to learn and apply emerging technologies. Experience with GitLab CI/CD and Copilot is beneficial.
  • Preferred experience with FedRAMP High, FISMA, or similar compliance environments.
  • Track record in reducing technical debt through refactoring and automation.
  • Familiarity with CI/CD, artifact management, and security scanning.
  • Familiarity with observability tools such as CloudWatch, Grafana, and OpenSearch.
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Vacancy posted 4 days ago
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