Senior Software Developer

Eliassen Group; St. Louis (MO); Hybrid; Confidential; Full time

Benefits offered by this job

Medical

Dental

Vision benefits

401k with company matching

life insurance

Job summary

Eliassen Group seeks a Senior Software Developer to modernize and maintain a mission-critical enterprise application in AWS for the U.S. Treasury. The role spans full‑stack Java/Spring Boot with Angular/TypeScript front ends, focusing on security remediation, cloud-native patterns, and robust test automation.

The position is hybrid in St. Louis, MO, requiring 2-3 days on-site. Rate ranges from $100.00 to $125.00 per hour on a W2 basis, with comprehensive benefits and cross‑team collaboration

Qualifications

• 5+ years of software engineering experience.
• Proven AWS experience with ECS/EKS, Lambda, RDS/Aurora, and IaC via CDK or CloudFormation.
• Strong Java, Spring Boot, Spring Cloud, and Hibernate experience with Tomcat.
• Strong Angular and TypeScript experience; micro-frontend architecture is a plus.
• Microservices architecture experience including strangler pattern for legacy modernization.
• Experience with observability tools such as CloudWatch, Grafana, OpenSearch.
• US citizenship required for FedRAMP High environment.

Responsibilities

• Design and implement microservices using Java/Spring Boot and TypeScript for event-driven and RESTful integrations.
• Upgrade and modernize Angular applications and support micro-frontend approaches.
• Build cloud solutions using AWS services including ECS/EKS, Lambda, EventBridge, and RDS.
• Remediate technical debt by upgrading dependencies and frameworks.
• Ensure comprehensive test automation and maintain technical documentation.
• Implement security best practices aligned to FRB System and U.S. Treasury guidelines, including vulnerability scanning and remediation.
• Coordinate with DevOps, InfoSec, Program Management, and multiple scrum teams.
• Communicate status, risks, and blockers to stakeholders.

Skills

Java

Spring Boot

Angular

TypeScript

Microservices

AWS

Security remediation

Test automation

Cross-team collaboration

Tools

AWS ECS

AWS EKS

Lambda

EventBridge

RDS/Aurora

CDK

CloudFormation

OpenSearch

Grafana

CloudWatch

Tomcat

Hibernate

Job description

Description:

Hybrid 2-3 days on-site in St. Louis, MO

Our client seeks a Senior Software Developer to support modernization and maintenance of a mission-critical enterprise application in AWS for the U.S. Treasury. The role requires full-stack development across Java/Spring Boot services and Angular/TypeScript front ends, with emphasis on security remediation, cloud-native patterns, and application upgrades. You will collaborate across scrum teams, align with enterprise architecture, and contribute reusable patterns and robust test automation.

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
• Vision benefits
• 401k with company matching
• life insurance

Rate: $100.00 to $125.00/hr. w2

Responsibilities:

• Design and implement microservices using Java/Spring Boot and TypeScript for event-driven and RESTful integrations.
• Upgrade and modernize Angular applications and support micro-frontend approaches.
• Build cloud solutions using AWS services including ECS/EKS, Lambda, EventBridge, and RDS.
• Remediate technical debt by upgrading dependencies and frameworks.
• Ensure comprehensive test automation and maintain technical documentation.
• Implement security best practices aligned to FRB System and U.S. Treasury guidelines, including vulnerability scanning and remediation.
• Coordinate with DevOps, InfoSec, Program Management, and multiple scrum teams.
• Communicate status, risks, and blockers to stakeholders.

Experience Requirements:

• 5+ years of software engineering experience.
• Proven AWS experience with ECS/EKS, Lambda, RDS/Aurora, and infrastructure as code with CDK or CloudFormation.
• Strong Java, Spring Boot, Spring Cloud, and Hibernate experience, with Tomcat exposure.
• Strong Angular and TypeScript experience. Micro-frontend architecture experience is a plus.
• Microservices architecture experience, including use of the strangler pattern for legacy modernization.
• Experience with observability tools such as CloudWatch, Grafana, and OpenSearch.
• Experience with test automation and development accelerators is preferred.
• Proven technical leadership with cross-team collaboration.
• U.S. citizenship required for a FedRAMP High environment.