Senior Engineer (Java)

Hammerjack Pty Ltd; Taguig; Hybrid; PHP 1,800,000 - 3,000,000; Full time

Job summary

Hammerjack Pty Ltd in Taguig is seeking a Senior Java Engineer to develop and maintain enterprise-level Java applications for electronic trading systems across asset classes. You will work in a hybrid setup with cloud infrastructure, FIX integration, and real‑time processing.

The role requires 8+ years in global financial services, strong Java design skills, and experience with AWS, CI/CD, Linux, and databases. Collaboration with DevOps and architecture teams is essential.

Qualifications

• 8+ years of professional experience in global financial services trading systems.
• Expert in server-side Java design and development for banking environments.
• Advanced Java enterprise development proficiency.
• Experience with Maven or Gradle (Maven preferred).
• Hands-on FIX Protocol experience with engines (QFJ, Rapid Addition, UlBridge).
• Proficient in AWS, Linux, SQL, JUnit and CI/CD tooling (Jenkins, GitLab).

Responsibilities

• Develop and maintain enterprise-level Java applications in trading environments.
• Ensure code quality through testing and code reviews.
• L3 support for deployment and production issue investigations.
• Follow SaFe agile processes and participate in ceremonies.
• Mentor junior team members.
• Collaborate with architecture and DevOps teams.
• Work with multiple remote regions and follow SDLC guidelines.
• Design and implement development guidelines and patterns.

Skills

Java enterprise development

Cloud infrastructure

Trading systems

Agile SaFe

Problem solving

Team mentoring

Linux administration

CI/CD pipelines

Tools

Maven

Gradle

FIX Engines

Solace

AWS

Jenkins

GitLab

SQL

JUnit

Kubernetes

Prometheus

Grafana

Terraform

Ansible

Spring Boot

Guice

Job description

Hybrid set-up in BGC, Taguig (2x WFH, 3x onsite)

Role Overview

Senior Java Engineer will be responsible for developing and maintaining enterprise-level java applications for electronic trading systems across multiple asset classes, with expertise in cloud infrastructure, FIX protocol integration, and real-time message processing.

Role Responsibilities

• Development of server-side Java design and development within banking and trading environments.
• Maintain code quality through comprehensive testing and code reviews
• L3 Support for deployment and investigation of production issues where appropriate.
• Follow SaFe agile methodology and participate in agile ceremonies and processes.
• Mentor junior members of the team.
• Ability to work with multiple remote regions.
• Work with architecture and DevOps teams to follow guidelines and implementations.
• Follow standard SDLC processes, design patterns for development guidelines.

Experience / Competences

Essential

• 8+ years of professional experience in global financial services, specifically in trading systems development
• Proven expertise in server-side Java design and development within banking and trading environments
• Java Development: Advanced proficiency in enterprise Java development
• Build Tools: Experience with Maven or Gradle (Maven preferred)
• FIX Protocol: Hands-on experience with FIX Protocol and FIX Engines (eg QFJ, Rapid Addition, UlBridge) in eg FX/Credit/Commodities Trading environments
• Middleware: Working knowledge of Solace messaging middleware
• Cloud Platforms: Experience deploying and managing applications on AWS (EC2/EKS)
• CI/CD: Proficiency with Jenkins and GitLab for deployment and continuous integration
• Operating Systems: Strong Linux administration and command-line skills
• Database: SQL experience and database management
• Testing: JUnit and related unit testing frameworks
• Excellent problem-solving abilities with strong attention to detail
• Outstanding communication and collaboration skills in team environments.
• Experience working in Agile development methodologies (SaFe/Scrum).

Desired

• Deep understanding of FX/Credit/Commodities products and financial instruments.
• Experience in electronic trading environments and market data systems
• Frameworks: Spring Boot and Google Guice dependency injection
• Observability: Grafana and Prometheus for monitoring and metrics
• Testing: Cucumber for behaviour-driven development and automation testing
• Infrastructure: Terraform or Ansible for infrastructure as code
• Caching: Hazelcast distributed caching solutions
• Containerization: Kubernetes and AWS EKS experience
• Experience using AI tools in a Development Environment e.g. AWS Kiro