Principal Java Developer

RE Partners; Tampa (FL); On-site; USD 150,000 - 210,000; Full time

Job summary

RE Partners is seeking an experienced Principal Java Engineer to join our high performing engineering team, focusing on low latency, high throughput backend systems in the payments domain. You will design, develop, and optimize Java services, build RESTful APIs, and drive architectural decisions in a collaborative but opinionated culture.

The ideal candidate has 10+ years in Java with Spring Boot, hands-on OpenShift/Kubernetes, AWS, and MongoDB experience, plus mentorship and observability

Qualifications

• 10+ years of Java development with a focus on performance and memory optimization.
• Proficiency with Mongo, Spring and microservice-based architecture.
• Experience with low-latency, high-throughput applications (sub-millisecond response times is a plus).
• Hands-on experience deploying on OpenShift and/or Kubernetes, plus AWS.
• Strong communication and opinionated design mindset.

Responsibilities

• Design, develop, and optimize low-latency, high-throughput backend systems using Java.
• Build and maintain RESTful APIs and microservices powering secure payment workflows.
• Deploy, monitor, and scale applications in OpenShift and AWS cloud environments.
• Collaborate with DevOps, Product, and QA to ensure production-grade solutions.
• Drive architecture changes, mentor peers, and improve observability across services.

Skills

Java performance

Spring Boot

Microservices

OpenShift

AWS

MongoDB

Kubernetes

Tools

OpenShift

Kubernetes

MongoDB

AWS

Job description

We are seeking an experienced and opinionated Principal Java Engineer to join our high performing engineering team, working on low latency, high-throughput systems in the payments processing domain. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you.

Key Responsibilities:

• Design, develop, and optimize low-latency, high-throughput backend systems using Java.
• Build and maintain RESTful APIs and microservices that power secure payment workflows.
• Work with messaging standards and protocols commonly used in financial transactions.
• Deploy, monitor, and scale applications in Red Hat OpenShift and AWS cloud environments.
• Integrate with MongoDB and other NoSQL/SQL datastores for real-time data management.
• Collaborate with DevOps, Product, and QA teams to ensure production-grade solutions.
• Drive architectural changes, advocate for best practices, and provide mentorship to peers.
• Drive performance tuning, fault tolerance, and observability improvements across services.

Required Skills & Experience:

• 10+ years of experience in Java development with a focus on performance and memory optimization.
• Proficient in Mongo, Spring and microservice-based architecture.
• Proven experience with low-latency, high-throughput applications (sub-millisecond response times a plus).
• Hands-on experience deploying applications on Red Hat OpenShift and/or Kubernetes.
• Strong cloud experience with AWS services such as ECS, EKS, Lambda, S3, etc.
• Strong communication skills and a bias toward action and opinionated design decisions.

Nice to Have:

• Familiarity with messaging systems (Kafka, RabbitMQ, etc.)
• Prior experience in Payments Processing, financial services, or banking systems.
• Exposure to container security and performance tuning on OpenShift.
• Knowledge of payment gateways, ISO 20022, or SWIFT formats.
• Collaborative, fast-paced, and engineering-driven culture.
• Emphasis on engineering autonomy, architectural decision-making, and clean code

Join Our Global Team:

We invite you to apply for the position at RE Partners. Join us in shaping the future of business technology consulting and transforming the way organizations thrive in a digital world. As a diverse, woman-owned global business, we pride ourselves on keeping talent happy – our 7% attrition rate speaks volumes. Bring your talented friends along and earn a referral bonus

Equal Opportunity Employer: We are an equal opportunity employer and welcome applications from all qualified individuals regardless of race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, or veteran status.