Senior Java Engineer – Hybrid (St. Louis)

Tech Mirrors; St. Louis (MO); Hybrid; USD 45,000 - 76,000; Full time

Job summary

Tech Mirrors is seeking a Java Engineer in St. Louis, MO. This hybrid role requires three days onsite weekly and involves long-term contract work. You will work with microservices, Postgres, and Azure, delivering robust backend systems.

Bring 5–12 years of hands-on Java experience, REST/SOAP, Spring Boot, Hibernate/JPA, and API Gateway expertise. Familiarity with Angular and frontend tech is a plus. Strong problem-solving and agile collaboration are essential.

Qualifications

• Hands-on in Java, J2EE, Postgres, REST/SOAP, Spring Boot/MVC, Hibernate/JPA.
• Experience in design of software solutions using architecture principles.
• Payment domain knowledge and ability to drive integrations and migrations.
• Frontend exposure with Angular/JS technologies is a plus.

Responsibilities

• Design and implement microservices with Java and Spring stack.
• Collaborate on integrations, migrations, and architecture decisions.
• Drive API testing and contract testing practices.
• Mentor teammates and contribute to SDLC improvements.

Skills

Java

J2EE

Spring Boot

Spring MVC

Hibernate/JPA

REST

SOAP

Microservices

PostgreSQL

Azure

API Gateway

Security

Tools

Docker

Kubernetes

PCF

Splunk

Jenkins

Git

SonarQube

Swagger

Postman

Job description

Tech Mirrors is seeking a Java Engineer in St. Louis, MO. This hybrid role requires three days onsite weekly and involves long-term contract work. You will work with microservices, Postgres, and Azure, delivering robust backend systems.

Bring 5–12 years of hands-on Java experience, REST/SOAP, Spring Boot, Hibernate/JPA, and API Gateway expertise. Familiarity with Angular and frontend tech is a plus. Strong problem-solving and agile collaboration are essential.