Staff - IT Software Engineering

Overview

About StoneX Enterprise Technology and global payments

StoneX Global Payments is a leading global payments fintech providing cross‑border FX and payments solutions to corporations, NGOs, and institutions across 180+ countries and 140+ currencies. Our mission is to build the next‑generation global payments platform—scalable, efficient, fault‑tolerant, and powered increasingly by intelligent automation.

We are undergoing a multi‑year modernization effort across our front, middle, and back‑office systems, leveraging cloud-native architectures, microservices, and now agentic AI engineering to accelerate delivery and reshape end‑to‑end payment flows.

Responsibilities

Position Purpose

We are seeking a Java Backend Developer (Mid-Level) to contribute to the development of

Primary Responsibilities
Backend Development
• Design, develop, and maintain backend services using Java and Spring Boot.
• Build RESTful APIs and microservices.
• Write clean, maintainable, well-tested code.
• Participate throughout the SDLC from design to deployment.

API Development & Integration
• Design and implement RESTful APIs following best practices.
• Collaborate with frontend teams to define API contracts and support BFF/API
integration.
• Implement validation, pagination, error handling, and secure API design.
• Integrate with internal and third-party services.

Performance & Reliability
• Develop scalable, low-latency backend services.
• Troubleshoot production issues and perform root cause analysis.
• Contribute to application stability and performance improvements.

Data & Messaging
• Work with relational databases and schema versioning tools.
• Develop event-driven solutions using Kafka (or similar messaging platforms).
Security & Compliance
• Follow secure patterns for handling sessions, tokens, and authenticated flows.
• Follow secure coding standards and regulatory requirements.

Cloud & Platform
• Work with Docker and Kubernetes.
• Contribute to CI/CD pipelines (Azure DevOps or Jenkins).
Observability
• Use monitoring and logging tools such as Datadog.
• Support production monitoring and incident investigations.

Ownership & Proactiveness
• Demonstrate strong ownership by driving tasks end-to-end, from requirements
clarification through development, testing, deployment, and production support
• Proactively identify risks, dependencies, gaps, and improvement opportunities beyond
the immediate scope of assigned Jira tickets.
• Think from a holistic customer and business perspective, considering the complete end
to-end workflow and system impact when designing and implementing solutions.
• Take initiative in collaborating across teams to resolve issues, remove blockers, and
ensure successful delivery of outcomes.

Qualifications

Required Qualifications

What Will Make You Stand Out
• Experience with Kubernetes and Azure or AWS.
• Experience with CI/CD pipelines.
• Knowledge of contract testing.
• Experience collaborating closely with frontend teams and BFF development.
• Experience building real-time or event-driven financial systems.
• Knowledge of monitoring and observability practices.

Education
Bachelor's or Master's degree in Computer Science, Engineering, or a related field (or
equivalent practical experience).

Working Environment
Hybrid (4 days in the office).