Java Developer

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

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

Job Title: Java Developer

Location: Dallas, TX

Duration: 12 Months + Extension

Bill Rate: $74/hour

Job Type: W-2, 1099, C2C

Client: To Be Discussed Later

Work Authorization: US-Citizen, H-1B, OPT-EAD, GC-EAD

Job Description

We are seeking an experienced Java Developer with strong Java, Spring Boot, and microservices expertise to build enterprise applications and integration services for digital assets, stablecoins, tokenized money, and institutional wallet/custody platforms. Candidates with banking and payments experience, particularly transaction processing, payment settlement, and blockchain/digital asset exposure, are encouraged to apply.

Required Skills

• Strong hands-on Java development
• Spring Boot, Microservices, and REST API development
• Enterprise integration patterns and API integrations
• Relational and/or NoSQL databases
• Kafka or equivalent messaging platforms
• Asynchronous and event-driven processing
• API security, authentication, and authorization
• CI/CD, automated testing, and DevOps practices
• Transaction processing, exception handling, and reconciliation
• Digital Asset & Blockchain Experience
• Digital Assets, Stablecoins, and Tokenized Deposits
• Blockchain / Distributed Ledger Technology (DLT)
• Wallet Architecture and Digital Asset Transfers
• Institutional Custody Platforms
• Transaction Signing and Public/Private Key Concepts
• Blockchain Transaction Lifecycle and Smart Contract Integration
• On-chain / Off-chain Integrations
• Digital Asset Settlement and Reconciliation
• Preferred Platform Experience
• Taurus / Taurus-PROTECT
• Comparable institutional wallet or custody platforms
• Ethereum / EVM-based integrations
• Enterprise blockchain platforms
• Banking payment gateways and payment orchestration systems
• Payments Experience - Added Advantage
• Payment Processing, Clearing, and Settlement
• SWIFT and ISO 20022
• Real-Time Payments, Wire Transfers, and ACH
• Transaction Orchestration and Reconciliation
• Treasury and Liquidity Systems

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.