Kunai

Senior Software Engineer (Java)

Kunai
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2 months ago
Remote, United StatesSenior

Responsibilities

  • Design and execute enterprise performance-testing strategies, frameworks, tooling, and success criteria for payment-processing services.
  • Identify bottlenecks through performance profiling and load testing and drive optimization across legacy and modern service layers.
  • Build and maintain Java backend services using PostgreSQL and OpenShift for card-network integration.
  • Modernize, migrate, and re-platform services from legacy infrastructure to cloud-native environments.
  • Develop PCI data-purging pipelines and event-driven services supporting token removal, event consumption, and data lifecycle requirements.
  • Participate in code reviews, architecture discussions, technical planning, and communication of performance findings to stakeholders.

Requirements

  • At least 5 years of professional software engineering experience, primarily in Java.
  • Strong relational database experience with Oracle and/or PostgreSQL.
  • Experience deploying and operating services in OpenShift, Kubernetes, or equivalent containerized environments.
  • At least one enterprise-level performance-testing engagement covering strategy, tooling, test execution, and findings presentation.
  • Experience with performance profiling, load testing, and bottleneck resolution in high-throughput distributed systems.
  • Experience designing logical test frameworks from scratch and working with minimal guidance.
  • Digital payments, card processing, or financial-services technology experience is strongly preferred.
  • Knowledge of PCI compliance, secure data handling, event-driven architecture, and OpenShift-based eventing.
  • Bachelor’s degree required, with specified specialized training or progressively responsible technology experience substitution for incomplete college education.
  • Preferred qualifications include PGLogical or PostgreSQL logical replication, GitHub Copilot or Claude, bank or card-network integration, and segregated or air-gapped development experience.

Benefits

  • Competitive compensation and professional development opportunities.
  • Flexible work arrangements.
  • Collaborative culture with opportunities for continuous learning and career growth.
  • The employer is unable to provide sponsorship for this role.

Tech Stack

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Kunai

About Kunai

201-500 employees

Kunai is a digital product development and engineering consultancy focused on financial services, building full-stack systems for banks, payment networks, and fintechs. Its teams deliver product development, AI and automation, cloud, and data engineering, partnering from MVP through rollout. Founded in 2015 and headquartered in San Ramon, California, Kunai was acquired by PwC and operates within the PwC network serving large U.S. banks and global card networks.

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