Haystack
← Back to Jobs
Technology
KS

Java Developer – Advanced Software Engineer

Keypixel Software SolutionsCincinnati, OH🇺🇸United StatesPosted 24 Aug 2026

Quick Overview

Seniority
Mid Senior
Work mode
Hybrid
Location
Cincinnati, OH, United States
Posted
Yesterday
MicroservicesSpringSpring BootAPI GatewayApacheJavaKafkaREST

Job Description

Java Developer – Advanced Software Engineer

Introduction:

This position is for a senior Java Developer with advanced software engineering skills. The successful candidate will be responsible for developing and maintaining enterprise backend services, payment systems, POS integrations, API Gateway, and ensuring secure development practices.

Responsibilities:

  • Design and develop REST APIs and backend microservices using Java, Spring, and Spring Boot.
  • Integrate API Gateway for efficient communication between services.
  • Implement Point-of-Sale (POS) integrations for seamless transactions.
  • Work on payment systems in a PCI-Secure Environment.
  • Integrate enterprise systems for smooth operations.
  • Utilize Kafka and Event-Driven Architecture for real-time data processing.
  • Implement Continuous Integration/Continuous Delivery (CI/CD) pipelines.
  • Work with Cloud technologies and containers for scalability and efficiency.

Requirements:

Required Skills:

  • 10+ years of experience in Java development.
  • Strong knowledge of Spring Framework and Spring Boot.
  • Experience in developing REST APIs and backend microservices.
  • Knowledge of API Gateway integration.
  • Experience with Point-of-Sale (POS) systems integration.
  • Experience with payment systems in a PCI-Secure Environment.
  • Experience in enterprise system integrations.
  • Experience with Apache Kafka and Event-Driven Architecture.
  • Experience in Continuous Integration/Continuous Delivery (CI/CD) practices.
  • Experience with Cloud Computing and containerization.

Preferred Skills:

  • Experience with Microservices architecture.
  • Experience in working with Payment Card Industry (PCI) standards.

Similar jobs