Staff Software Engineer / Architect
Echo IT Solutions
Staff Software Engineer / Architect – Java Modernization (AWS / Kubernetes)
Location: St. Louis, MO
We are looking for a staff‐level software engineer / architect to lead the modernization of a largescale, mission‐critical Java platform. This role is hands‐on and focused on rewriting and re‐architecting existing systems using modern Java, Spring Boot, and cloud‐native patterns on AWS.
What You'll Do
- Modernize a legacy Java platform to Java 21 and Spring Boot
- Re‐architect monolithic components into well‐structured, cloud‐native services
- Design and build services for AWS EKS and/or OpenShift
- Define execution models, service boundaries, and deployment patterns
- Drive architectural decisions around performance, scalability, and reliability
- Work closely with platform, DevOps, and cloud infrastructure teams
- Mentor senior engineers and set engineering standards
- Own solutions end‐to‐end — from design through production
What We're Looking For
- Staff‐level experience building and modernizing large Java systems
- Strong hands‐on experience with Java (17+ preferred, 21 ideal) and Spring Boot
- Deep understanding of distributed systems and system design
- Practical experience deploying applications on AWS, preferably EKS
- Solid Kubernetes knowledge (EKS and/or OpenShift)
- Experience containerizing applications and running them on a scale
- Strong grasp of performance tuning, JVM behavior, and low‐latency systems
- Ability to operate as both architect and hands‐on engineer
Nice to Have
- Experience migrating from monoliths to cloud‐native architectures
- Exposure to eventing, messaging, or streaming systems (Kafka, MQ, etc.)
- Familiarity with CI/CD pipelines and infrastructure‐as‐code
- Background in financial services, payments, or high‐throughput systems
Why This Role
- Opportunity to shape the future architecture of a critical platform
- Work on complex, high‐scale systems where design decisions matter
- High ownership, real technical impact, and long‐term relevance
Vacancy posted 4 days ago
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