Senior Software Engineer

Eliassen Group; St. Louis (MO); Hybrid; USD 117,000 - 131,000; Full time

Benefits offered by this job

Medical

Dental

Vision

401k match

Life insurance

Job summary

Eliassen Group is seeking a hands-on Senior Software Engineer in St. Louis for a mission-critical enterprise application in AWS GovCloud.

The role emphasizes practical engineering, reliability, and collaboration with architects and scrum teams to deliver scalable microservices and micro-frontend solutions. You will design and implement microservices with Java/Spring Boot and TypeScript, contribute to CI/CD, and help modernize an existing system while ensuring robust testing and documentation in

Qualifications

• 5+ years of hands-on software engineering experience.
• Advanced proficiency with Java and the Spring Boot ecosystem.
• Experience with AWS GovCloud services (ECS/EKS, Lambda, RDS) and IaC (CDK/CloudFormation).
• Strong UI experience with Angular; familiarity with micro-frontend architecture is a plus.
• Background in microservices architecture and modernization patterns (strangler).
• Strong technical writing and communication skills.
• Experience with GitLab CI/CD and Copilot is beneficial.
• Familiarity with FedRAMP High, FISMA or similar compliance.
• Observability tools such as CloudWatch, Grafana, OpenSearch.

Responsibilities

• Design and implement microservices using Java, Spring Boot, and TypeScript.
• 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.

Skills

Team collaboration

Technical writing

Communication

Problem solving

Agile/Scrum

Cross-functional

Learning new tech

Tools

Java

Spring Boot

TypeScript

AWS GovCloud

ECS

EKS

Lambda

EventBridge

RDS/Aurora

CDK

CloudFormation

Angular

Module Federation

GitLab CI/CD

Copilot

CloudWatch

Grafana

OpenSearch

Job description

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.