Java Backend Engineer

MACHINE LEARNING TECHNOLOGIES LLC; St. Louis (MO); On-site; USD 90,000 - 128,000; Full time

Job summary

MACHINE LEARNING TECHNOLOGIES LLC in St. Louis, MO, seeks a Java Backend Engineer to design, develop, and maintain scalable backend services. You will work on RESTful APIs, microservices, and data integrations in a fast-paced environment.

Candidates should have 7–12 years in software design, strong Java/J2EE, Spring, PostgreSQL, and cloud tooling (Azure). Experience with Docker/Kubernetes and CI/CD is highly valued; willingness to collaborate across teams is essential.

Qualifications

• 7-12 years of experience designing software solutions
• Strong Java/J2EE experience
• Expertise with REST/SOAP APIs and Spring Framework
• PostgreSQL database experience
• Azure cloud familiarity and microservices experience
• Familiarity with Docker/Kubernetes and CI/CD
• Knowledge of Kafka, security standards, concurrency and multithreading
• Experience with API testing tools and test-driven development
• Experience with Agile SDLC and project delivery
• Good communication and collaboration skills

Responsibilities

• Design and implement Java backend solutions using microservices architecture
• Develop and maintain RESTful and SOAP services with Spring MVC/Boot
• Integrate with PostgreSQL databases and data stores
• Build and manage CI/CD pipelines (Jenkins, PCF)
• Containerize services with Docker and deploy to Kubernetes/Azure
• Design APIs and contract tests using Swagger/REST Assured
• Collaborate with frontend, QA, and product teams
• Participate in debugging, performance tuning and incident response
• Ensure code quality with static analysis and tests
• Mentor teammates and follow Agile practices

Skills

Java

Spring Boot

REST

Microservices

Azure

Docker

Kubernetes

PostgreSQL

Kafka

Security

Testing

Git

Jenkins

Tools

Jenkins

PCF

Swagger

Postman

Git

Job description

Job Description

Job Overview

Job Overview

• Job ID: J53621
• Job Title: Java Backend Engineer
• Location: St Louis, MO
• Duration: 8 Months + Extension
• Domain Exposure: Education
• Work Authorization: US Citizen,Green Card,OPT-EAD,CPT,H-1B,H4-EAD,L2-EAD,GC-EAD
• Client: To Be Discussed Later
• Employment Type: W-2, 1099, C2C

Bill Rate

$79/hour

Job Type

C2C/1099 Contract

Work Authorization (duplicate)

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.
• Distributed systems (Databases, caches, microservices, message broker)
• 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 to have exposure to Financial/Banking Domain, Frontend development, JavaScript, HTML5, CSS3, Bootstrap/Material UI, Angular.
• 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.

Equal Opportunity Employer

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.