Java Backend Engineer

Machine Learning Technologies, LLC; Missouri; On-site; USD 120,000 - 160,000; Full time

Job summary

Machine Learning Technologies, LLC in Missouri seeks a senior software engineer with 7-12 years of experience to design scalable solutions using Java, J2EE, Spring Boot, REST/SOAP, and microservices in Azure. You will contribute to architecture decisions, drive payment-domain implementations, and mentor teams while delivering robust, secure software.

The role requires hands-on leadership with expertise in PostgreSQL, Docker, Kubernetes, Kafka, CI/CD, and test-driven development, alongside strong

Qualifications

• 7-12 years of experience designing software solutions using software architecture design principles.
• Payment domain expertise and ability to drive the team, integrations, migrations, and create approach.
• Experience with Angular and front-end technologies is a plus.
• Understanding of Kafka, integration patterns, security standards, concurrency and multi-threading,
• PostgreSQL, Azure, Docker, and Kubernetes knowledge.
• Hands-on, high-energy, detail-oriented, proactive, and able to function independently under pressure.
• Strong problem-solving skills.
• API and contract testing using REST Assured/Postman/Swagger/SOAP UI + Groovy/Spring Cloud Contract
• Test Driven Development (TDD) and unit testing with JUnit/xUnit
• Mocking frameworks such as Mockito/OCMock for testing
• Static code analysis using SonarQube/Xcode Static Analyzer
• Experience with Jenkins/PCF or similar for automated builds and testing
• Troubleshooting with Splunk, Swagger/Postman and Git-based workflows

Responsibilities

Skills

Java

J2EE

Spring framework

REST API

SOAP

Azure

Microservices

PostgreSQL

Docker

Kubernetes

Kafka

CI/CD

Git

Problem solving

Agile

Tools

Postgres

Spring Boot

Hibernate/JPA

API Gateway

Azure

Junit

Swagger

Postman

Groovy/Spring Cloud Contract

SonarQube

Splunk

Git

Job description

Work Authorization: USC, GC, H-1B, OPT-EAD, GC-EAD, H4-EAD

JOB SUMMARY

• Good hands-on in Java, J2EE, Databases (Postgres), Web Services (REST, SOAP), Spring boot, Spring MVC, Spring 4.0, Hibernate/JPA, API Gateway, Azure and Microservices.
• 7-12 years of experience desired in designing software solutions using software architecture design principles.
• Payment domain expertise and ability to drive the team, integrations, migrations, and create approach.
• Good to have experience in Angular, and front-end technologies.
• Understanding of Kafka, Integration patterns, Security standards, Concurrency and Multi-threading, Collections, PostgreSQL, Azure, Docker, Kubernetes
• Hands-on, high-energy, detail-oriented, proactive, and able to function independently under pressure.
• Strong Problem-Solving skills.
• API and Contract Testing using REST Assured/Postman/Swagger/SOAP UI + Groovy/Spring Cloud Contract
• Test Driven Development TDD Methodology and Unit Testing using Junit/XCTest
• Use of mocking frameworks such as API Service Virtualization/Mockito/OCMock
• Static Code Analysis using SonarQube/Xcode Static Analyzer
• Hands on with Jenkins/PCF or similar tools for automated provisioning of build and test infrastructure.
• Troubleshooting with Splunk, API aids like Swagger/Postman and source control systems like Git
• Intermediate knowledge of Maven, Junit, Redis, Oracle database, SQL, Unix command, Shell scripting.
• Good knowledge of tools like Sonar, Data-dog/Dynatrace, GIT, SVN, Rally/Jira, CI (Jenkin / Bamboo)/CD, Splunk
• Strong communication skills -- both verbal and written – with strong relationship, collaborative skills, and organizational skills
• Proven experience in Agile methodology, SDLC, & implementation of Projects, debugging applications.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.