Senior Full Stack Java Software Engineer

NPAworldwide; Dallas (TX); Hybrid; USD 140,000 - 190,000; Full time

Job summary

NPAworldwide is seeking a Senior Full Stack Java Developer to help build a new technology platform in the FinTech/payments space. The role involves 80% backend (Java/Spring) and 20% frontend (React), with a focus on scalable, secure cloud-native applications.

Based in the Dallas area, this hybrid position requires onsite work Tue–Thu. Ideal candidates have 15–20 years of experience designing enterprise-grade Java applications, mentoring engineers, and driving architectural standards in

Qualifications

• 15–20 years of professional software engineering experience.
• Extensive experience designing and building enterprise Java applications.
• Experience with AI-assisted software development tools.
• Payment processing or financial systems experience.
• Strong understanding of distributed systems and cloud architecture.

Responsibilities

• Lead the architecture and design of a modern technology platform.
• Develop highly scalable, secure, cloud-native applications utilizing Java and the Spring ecosystem.
• Partner with executive leadership to align technical strategy with business objectives.
• Define software engineering standards, architectural patterns, and development best practices.
• Mentor and coach software engineers while fostering a collaborative engineering culture.
• Lead technical design reviews and provide architectural guidance across development teams.

Skills

Java

Spring Boot

Spring Framework

Hibernate

REST APIs

React

Maven

AWS

Job description

Job Description

Join an exciting FinTech/Payments company as it builds a new technology platform and business offering from the ground up. We seek

Senior Full Stack Java Developers with 15-20 years of experience designing and delivering high-quality software products. These positions will consist of about 80% backend and 20% front-end.

LOCATION REQUIREMENTS

• Candidates must be based in the Dallas, TX metro area (Plano or Frisco preferred).
• Please do not apply outside of these markets unless you are willing to relocate on your own.
• This is a hybrid role requiring work to be completed onsite three days per week (Tuesday, Wednesday, and Thursday).

We Seek Software Engineering Professionals Who

• Lead through technical expertise rather than title.
• Have a passion for clean, maintainable, scalable software.
• Think architecturally while remaining pragmatic.
• Understand SOLID principles, Enterprise Integration Patterns, Design Patterns (Gang of Four), and Agile methodologies.
• Enjoy mentoring and developing engineers.
• Thrive in a fast-paced, collaborative environment where innovation is encouraged.

Overall Duties

• Part of a team to lead the architecture and design of a modern technology platform.
• Develop highly scalable, secure, cloud-native applications utilizing Java and the Spring ecosystem.
• Partner with executive leadership to align technical strategy with business objectives.
• Define software engineering standards, architectural patterns, and development best practices.
• Mentor and coach software engineers while fostering a collaborative engineering culture.
• Lead technical design reviews and provide architectural guidance across development teams.

The current tech stack includes Java 25, React 19, Spring Boot 4.1, Spring Framework, Hibernate, REST APIs, PostgreSQL, Git, Maven, Claude Code, and AWS.

Qualifications

• Approximately 1520+ years of professional software engineering experience.
• Extensive experience designing and building enterprise Java applications.
• Experience with AI-assisted software development tools
• Payment processing or financial systems industry experience
• Deep expertise with:
• Java
• Spring Boot and Spring Framework
• Hibernate
• REST APIs
• React
• Maven
• AWS Cloud Services (ECS/Fargate preferred)
• Strong understanding of distributed systems and cloud architecture.
• Experience designing highly available, scalable software platforms.

Preferred

• Payment processing or financial services technology
• PCI DSS v4 compliance
• SOC 2 Type II controls
• Secure software development
• Event-driven architecture
• RabbitMQ, Kafka, or JMS messaging
• Kotlin
• Building software within regulated environments

U.S. Citizens or Green Card holders only, please. We are unable to accept 3rd party candidates, transfer a visa, or provide sponsorship.

Why Is This a Great Opportunity

You will join a small yet dynamic and growing technology company providing credit card/debit card payment processing services. The company will also be designing and developing a payment gateway. The leadership team has deep experience in the payments industry.