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Senior Java Engineer – Empowering secure, scalable payments in ING’s OMaaP platform.
Lead development, quality engineering, and mentorship in a dynamic Agile DevOps environment in Makati, Philippines.
Your Work Environment
You will join the Order Manager as a Platform (OMaaP) domain, the central orchestration engine for payment orders across ING’s Payment & Settlement Services landscape.
- Builds and exposes internal and external APIs (including PSD2)
- Creates and routes orders to payment processing engines
- Warehouses, tracks, and reports the end‑to‑end lifecycle of orders
- Supports instant payments and high‑availability transaction flows
We operate as an Agile DevOps squad, owning the full lifecycle of our services—design, 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 OMaaP’s services are robust, scalable, and production‑ready.
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 (Shift‑Left)
Build automated unit, integration, component, and API tests using JUnit, Karate, Cucumber.
Conduct functional, integration, and performance‑aware validation of services.
Ensure end‑to‑end payment flows are robust across APIs, microservices, and event‑driven 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 root‑cause analysis and drive long‑term 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 continuous‑learning 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 event‑driven architectures (Kafka).
Background in performance engineering or high‑throughput 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 in OMaaP, you:
- Strengthen the reliability and quality of mission‑critical 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, real‑time payments across Payment & Settlement Services.
- Empower the team by being a go‑to expert in payment domain knowledge.
Minimum Qualifications
- Bachelor’s 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.