Senior Java Developer - Spring Boot & Blockchain

Quantum Technologies. LLC; Dallas (TX); On-site; USD 84,000 - 120,000; Full time

Job summary

Quantum Technologies LLC seeks an experienced Java Developer to design and implement enterprise applications and integration services for digital assets and custody platforms. You will work on Java, Spring Boot, and microservices with a focus on reliability and scalable architectures in a financial tech context.

Candidates with payments experience, transaction processing, and blockchain exposure are encouraged to apply.

Qualifications

• Experience with Java 8+ and Spring Boot in enterprise applications.
• Hands-on experience with microservices and REST API development.
• Strong understanding of enterprise integration patterns and data stores.
• Familiarity with messaging (Kafka) and asynchronous/event-driven processing.
• Knowledge of API security, authentication and authorization.
• Experience with CI/CD and DevOps practices.
• Exposure to digital assets, blockchain, and tokenized assets.

Responsibilities

• Develop enterprise Java applications and integration services for digital assets and custody platforms.
• Build and maintain microservices architectures and REST APIs.
• Work with banking/payments integrations, settlement processes, and blockchain exposure.

Skills

Java

Spring Boot

Microservices

REST APIs

Databases

Kafka

CI/CD

Security

Blockchain

DLT

Tools

Taurus

Job description

Quantum Technologies LLC seeks an experienced Java Developer to design and implement enterprise applications and integration services for digital assets and custody platforms. You will work on Java, Spring Boot, and microservices with a focus on reliability and scalable architectures in a financial tech context.

Candidates with payments experience, transaction processing, and blockchain exposure are encouraged to apply.