Senior Java Engineer

RE Partners; Jacksonville (TX); Hybrid; USD 130,000 - 150,000; Full time

Job summary

RE Partners is seeking an experienced Principal Java Engineer to join our high-performing engineering team, delivering low-latency, high-throughput backend systems for payments processing. This hybrid role is based in New York, with modern tech stack and a culture that values performance, opinionated design, and ownership.

You will design and optimize Java services, build RESTful APIs, work with AWS, OpenShift, and Kubernetes, and mentor peers while driving best practices across the software

Qualifications

• 10+ years of Java development with focus on performance and memory optimization.
• Proficient with MongoDB, Spring, and microservice architectures.
• Experience in low-latency, high-throughput applications (sub-millisecond times a plus).
• Hands-on deployment on OpenShift and/or Kubernetes.
• Strong AWS experience (ECS, EKS, Lambda, S3).
• Clear communication and decisive, opinionated design.

Responsibilities

• Design and optimize low-latency backend systems in Java.
• Build RESTful APIs and microservices powering payments workflows.
• Deploy, monitor, and scale on OpenShift and AWS.
• Integrate with NoSQL/SQL data stores for real-time data.
• Coordinate with DevOps, Product, and QA for production-grade solutions.
• Drive performance tuning and observability improvements.

Skills

Java performance

MongoDB

Spring Boot

Microservices

Low latency

OpenShift

Kubernetes

AWS

Communication

Tools

AWS services (ECS/EKS/Lambda/S3)

Job description

Senior Java Engineer

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. This hybrid role is based in the NY and offers the opportunity to build scalable, real-time services using modern technologies. If you’re passionate about performance, have strong Core Java and Spring Boot 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.

Location & Work Environment:

• Hybrid work model in New York.
• Collaborative, fast-paced, and engineering-driven culture.
• Emphasis on engineering autonomy, architectural decision-making, and clean code

The base salary range for this position is $130,000.00 – $150,000.00 annually. This range represents the good-faith minimum and maximum salary the Company believes it would pay for this role at the time of this posting.

Actual compensation will be determined based on factors such as experience, skills, qualifications, geographic location, internal equity, and business needs. This position may also be eligible for additional compensation, including bonuses, commissions, and/or benefits, as applicable.

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.