Java back-end developer with Digital asset

Quantum Technologies LLC; Plano (TX); On-site; USD 82,000 - 117,000; Full time

Job summary

Quantum Technologies. LLC is seeking a Java back-end developer with Digital asset focus in Plano, TX. The role involves building and supporting a Spring Boot engine for digital trade processing, coordinating with MQ and Zeebe workflows, and integrating various services.

The project duration is 13 months with extension potential, and a bill rate of $72/hour on a C2C basis. W-2, 1099, and C2C work types are available, with US work authorization including multiple visa categories.

Qualifications

• Build and maintain a Spring Boot engine for digital trade processing.
• Coordinate with MQ and Zeebe workflows to ensure reliable integrations.
• Design and implement robust REST APIs with proper error handling and transaction management.
• Experience with financial transaction processing is preferred.
• Knowledge of blockchain technology is a plus.

Responsibilities

• Build and support a mission critical Spring Boot engine for digital trade processing using MQ and Zeebe workflows to coordinate internal and external services

Skills

Java

Spring Boot

Camunda

Blockchain

Oracle

JUnit 5

Mockito

REST API

Error handling

Txn management

Tools

JIRA

Confluence

Job description

Java back-end developer with Digital asset

Location:

Duration:

13Months+ Extension

Domain Exposure:

Utilities/ Energy

Client:

To Be Discussed Later

Employment Type:

W-2, 1099, C2C

Work Authorization:

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Job Title: Java back-end developer with Digital asset
Location: Plano , TX
Duration: 13 Months + Extension
Bill Rate: $72/hour (C2C)
Job Type: W-2, 1099, C2C
Client: To Be Discussed Later
Work Authorization: US Citizen, Green Card, OPT-EAD, CPT, H-4-EAD, Other

Job Description

• Build and support a mission critical Spring Boot engine for digital trade processing using MQ and Zeebe workflows to coordinate internal and external services

Skillsets

• Java 21 Spring Boot and Maven
• Camunda 8 Zeebe workflow orchestration
• IBM MQJMS Kafka experience is a plus
• Oracle SQLJPA and Snowflake
• REST API integrations resilient error handling and transaction management
• JUnit 5 Mockito and integration testing
• Financial transaction processing experience preferred
• Smart contract or blockchain knowledge is a plus
• UI development or frontend integration experience is a plus
• Mandatory Skills Required: Java, Springboot, Camunda, Blockchain, Oracle
• Good to have skills: JIRA, Confluence, Excellent communication

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.