Sr. SW Engineer (Java)

Location: Singapore; at least 3 days per week in the office

Company

hirify.global is a global payments technology company facilitating transactions between consumers, merchants, financial institutions, and governments across more than 200 countries and territories.

What you will do

• Design, build, implement, and maintain secure, scalable payment applications and services for hirify.global Agentic Commerce initiatives.
• Translate business requirements into technical solutions, validate assumptions, identify design issues, and collaborate with product, engineering, business, QA, operations, compliance, and other stakeholders.
• Participate in system design, architecture, estimation, code planning, and technical documentation.
• Develop and review code, apply coding standards and best practices, debug issues, and create test plans and testing procedures.
• Respond to support requests during on-call rotations, troubleshoot incidents, and deploy fixes under guidance.
• Improve product availability, reliability, efficiency, observability, performance, and security while using modern developer tools, cloud services, automation frameworks, and AI-assisted development tools.

Requirements

• At least 2 years of relevant work experience and a Bachelor’s degree, or at least 5 years of relevant work experience.
• At least 2 years of experience with technologies or software systems and with developing or implementing web-based or mobile applications.
• Experience with system design and architecture, debugging and troubleshooting, code reviews, coding standards, test planning and execution, support requests, deploying fixes, and software developer tools.
• Strong expertise in Core Java, JEE technologies, RESTful services, object-oriented design, and design patterns.
• Experience with JDBC, JMS, Spring, Hibernate, JMX, PostgreSQL, SQL, relational database design, and commercial-grade databases.
• Experience with Apache Kafka for event-driven or messaging-based solutions and Hazelcast for distributed caching or in-memory data-grid solutions.
• Experience developing, deploying, or supporting containerised applications and designing solutions with CI/CD, including practical Jenkins experience.
• Working knowledge of Git and GitHub, plus the ability to understand requirements and design, build, and deliver effective technical solutions.
• Strong research, attention-to-detail, communication, collaboration, and problem-solving skills, with the ability to understand customer needs and business processes.

Nice to have

• Familiarity with test automation, especially Karate.
• Experience in the payments industry and familiarity with payment technologies.
• Exposure to agentic commerce, AI agents, or LLM-powered applications, including agent workflows, tool or function calling, and business API integration.
• Understanding of secure agent-initiated payment flows, including user consent, delegated authority, payment tokens, transaction controls, fraud, and risk considerations.
• Familiarity with Agentic Commerce Protocol, Model Context Protocol, or similar commerce and agent-integration standards.
• Experience evaluating, monitoring, or securing AI-enabled applications, including testing agent behavior and handling unreliable or unexpected outputs.

Culture & Benefits

• Full-time employment with a hybrid schedule requiring at least 3 days in the office, confirmed by the Hiring Manager.
• Approximately 60–75% of the role is hands-on coding with code, data, modern tools, cloud services, and automation frameworks.
• Work in a cross-functional environment focused on security, customer trust, payment integrity, regulatory requirements, and continuous improvement.
• Use emerging technologies, including Generative AI tools such as ChatGPT and Microsoft Copilot, in everyday work.