Senior Java Engineer

Background on what ING is about (Generic ING background):

ING Hubs Philippines (ING Hubs PH) is an international part of the ING organization delivering services to many Business Units across the world for both Wholesale Banking and Retail Banking activities. Working for ING Hubs PH means working with the most diverse workforce and where no challenge is the same.

At ING our purpose is to empower people to stay a step ahead in life and business. We believe that sustainable progress is driven by people with the imagination and determination to make a better future for themselves and those around them.

ING is changing what banking is. For you, that means plenty of opportunities for personal growth in a continuously evolving environment. If this is the environment you thrive in, then apply and join us in changing the future of banking!

Your Work Environment

You will join the SRE & Tooling domain of Payment & Settlement Services:

• Builds and exposes internal and external APIs (including PSD2)
• Creates and routes orders to payment processing engines
• Warehouses, tracks, and reports the endtoend lifecycle of orders
• Supports instant payments and highavailability transaction flows

We operate as an Agile DevOps squad, owning the full lifecycle of our servicesdesign, build, test, deploy, run, and improve

Job Overview

• As a Senior Java Developer, you are a technical leader and a key driver of quality, resilience, and continuous improvement. You own both development and quality engineering responsibilities, ensuring services are robust, scalable, and productionready.
• This role requires:
  • Advanced Java engineering expertise
  • Strong ownership of testing and automation
  • Deep understanding of payment systems
  • Leadership in engineering and domain knowledge
• You are also expected to serve as a Subject Matter Expert (SME) in core payment systems, helping the squad strengthen its domain knowledge and navigate complex financial flows and regulatory requirements.

Key Responsibilities

• Software Development & Platform Engineering
• Design and build backend microservices and APIs using Java 21, Spring Boot, REST, JAX RS.
• Lead design and development of complex features and provide architectural guidance.
• Implement secure, scalable, high availability solutions supporting mission critical payment flows.
• Apply secure programming practices, ensuring code is resilient to vulnerabilities such as injection, CSRF, insecure deserialization, broken authentication, and other OWASP identified risks.
• Conduct code reviews and uphold high standards for code quality, reliability, security, and design.
• Collaborate with Product Owners and architects to refine requirements and deliver end to end solutions.
• Quality Engineering & Test Automation (ShiftLeft)
• Build automated unit, integration, component, and API tests using JUnit, Karate, Cucumber.
• Conduct functional, integration, and performanceaware validation of services.
• Ensure endtoend payment flows are robust across APIs, microservices, and eventdriven components.
• Define and improve test strategies and ensure strong coverage and early defect detection.
• Integrate automated testing into CI/CD pipelines to ensure reliable, fast, and stable releases.
• Perform rootcause analysis and drive longterm quality improvements.
• Ensure all releases meet stringent functional, reliability, and compliance standards.
• DevOps, Monitoring & CI/CD Ownership
• Contribute to automated CI/CD pipelines using Azure DevOps, Git, Maven.
• Support deployments and production operations, ensuring stable and observable services.
• Enhance reliability using monitoring and logging tools including Prometheus, Grafana, OpenTracing, ELKaaS.
• Participate in incident analysis and drive improvements in resilience and operational maturity.
• Ensure systems are fully instrumented for performance, availability, and incident diagnosis.
• Leadership, Mentorship & Continuous Improvement
• Mentor engineers on clean coding, architecture, and testing excellence.
• Promote best practices in quality, automation, performance, and system resilience.
• Drive improvements in tooling, frameworks, engineering processes, and SDLC maturity.
• Foster a collaborative, transparent, and continuouslearning squad culture.
• Actively promote and build a learning culture around payment domain knowledge.
• Serve as the SME for core payment systems.

Preferred Skills

• Payment domain expertise (PSD2, SEPA, instant payments).
• Experience with eventdriven architectures (Kafka).
• Background in performance engineering or highthroughput systems.
• Familiarity with observability tooling.
• Experience leading technical initiatives.

Key Capabilities/Experience

• Good knowledge of observability and monitoring tools like Grafana, Kibana, Loki, Tempo and Prometheus
• Familiarity with containerization and orchestration tools (e.g., Docker, Kubernetes).
• Excellent problem-solving skills and ability to work independently in a fast-paced environment.
• Agile / Scrum methodologies
• CI / CD tooling: Azure DevOps, Git, Ansible
• Issue trackers like ServiceNow or Azure Boards
• Keen on documenting work

Why This Role Matters

As a Senior Java Developer, you:

• Strengthen the reliability and quality of missioncritical payment systems.
• Elevate engineering culture through leadership, mastery, and continuous learning.
• Embed automation and quality deeply into the SDLC.
• Shape the future of secure, scalable, realtime payments across Payment & Settlement Services.
• Empower the team by being a goto expert in payment domain knowledge.

Minimum Qualifications

• Bachelors degree in computer science or related field.
• 3-7+ years of Java engineering experience building distributed backend systems.
• Expertise in Java 21, Spring Boot, REST APIs, microservices.
• Strong experience in automated testing.
• Experience with CI/CD (Azure DevOps, Git, Maven).
• Knowledge of ELKaaS, Prometheus, Grafana, OpenTracing.
• Strong understanding of secure programming principles and experience applying OWASP best practices in enterprise systems.
• Comfortable working in Linux environments and with NoSQL databases.
• Excellent analytical skills and strong ownership mindset.
• Strong communication and leadership skills.