CareerPlanSign in

Senior Software Engineer

O'Fallon, Missouri, US💼 Full-time🗓 2026-09-22 → 2026-09-26

Core

Design, build, test, deploy, and maintain high-performing, scalable software solutions and platforms for artificial intelligence, cloud, and machine learning.

Role type

Senior Software Engineer (Backend/Platform)

Builds

Mission-critical software components, automation frameworks, validation tools, and microservices for top global brands and governments.

Domain

Fintech / Payments / Cloud Infrastructure

Deliverable

production ML models | product features | infrastructure

Required skills

Java, Spring Boot, Microservices, SQL (PostgreSQL, Oracle), Cloud Native Architecture (PCF, AWS), CI/CD, Code Quality Tools (Sonar, Zally, Checkmarx), Domain-Driven Design, OOP, Distributed Systems, Secure Coding (OWASP), Performance Engineering, Linux, Automation Testing.

Preferred skills

Mainframe modernization, Payments domain knowledge, Reliability/Scalability system design.

Technologies

Java, Spring Boot, PostgreSQL, Oracle SQL, PCF, AWS, Jenkins, XLR, GitHub Actions, Sonar, Clover, Artifactory, JFrog, XRay, Veracode, OWASP.

Responsibilities

Design and implement microservices and cloud migration strategies; develop test automation frameworks and CI/CD pipelines; conduct code reviews and enforce security practices; perform performance engineering and troubleshooting; mentor junior engineers.

Seniority

Senior, hands-on IC with mentorship responsibilities.

Sourced via workday · Listed on CareerPlan, which tracks 70,000+ jobs from 20+ sources.