Senior Java Engineer

RE Partners Consulting; New York (NY); On-site; USD 130,000 - 150,000; Full time

Job summary

RE Partners Consulting is seeking an experienced Senior Java Engineer to join our high-performing engineering team, delivering low-latency, high-throughput backend services in payments processing. You’ll apply strong Core Java and Spring Boot expertise to build scalable systems.

You’ll deploy and operate on OpenShift and Kubernetes, use AWS services (ECS/EKS/Lambda/S3), work with MongoDB and other datastores, and collaborate with DevOps, Product, and QA while mentoring peers to raise engineering

Qualifications

• 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.

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.

Skills

Java development

Performance optimization

Microservices architecture

Cloud - AWS

OpenShift / Kubernetes

Communication & action bias

Tools

MongoDB

Spring Boot

OpenShift

Kubernetes

REST APIs

AWS (ECS/EKS/Lambda/S3)

Job description

Who We Are:

We are a fast growing business and technology consultant company co-founded in 2019. We offer a custom-tailored, white-glove engineering service fit for our clients, because a digital transformation is more than just technology. With a successful track record of being a preferred vendor for Fortune 500 companies and as a trusted partner for some of the industry’s leading companies, our global talent has helped many clients achieve their goals.

The 3 G’s of RE:

“Get Shit Done.”

“Get Over Shit.”

“Give a Shit.”

We are seeking an experienced and opinionated Senior 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 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.
• 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.

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.