Senior Java Developer POD PAYMENTS

Overview

Connecting clients to markets – and talent to opportunity.With 5,400+ employees and over 80,000 institutional, commercial, and payments clients, we operate from more than 80 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors.Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth.

Business Segment Overview

Corporate: Engage in a deep variety of business-critical activities that keep our company running efficiently. From strategic marketing and financial management to human resources and operational oversight, you’ll have the opportunity to optimize processes and implement game-changing policies.

Responsibilities

Position Purpose

We are seeking an experienced Staff Engineer to provide technical leadership across our React, Node.js, and Java Spring Boot platforms. You will drive architectural decisions for scalable web applications and backend microservices, set engineering standards across teams, and mentor senior and mid-level engineers. This role owns the technical direction for a major product area within our cloud-based microfrontend and microservice ecosystem on Azure.

Primary Duties

• Own the technical architecture for one or more major product areas spanning React/Vite frontends and Node.js/Fastify or Java Spring Boot backends.
• Set engineering standards and best practices for code quality, testing, security, and performance across multiple teams.
• Lead design reviews and architecture decision records (ADRs) for significant technical initiatives.
• Mentor senior and mid-level engineers, and provide technical guidance across the wider engineering organization.
• Partner with product managers, architects, and engineering leadership to translate business requirements into scalable technical designs.
• Drive adoption of CI/CD, DevOps, and observability practices, and lead resolution of complex production issues.
• Identify and resolve systemic performance, scalability, and security issues across the stack.
• Lead by example in code reviews, technical documentation, and cross-team collaboration.
• Evaluate new technologies and frameworks, and lead proof-of-concept efforts to inform technical strategy.

Qualifications

To land this role you will need:

Bachelor's or Master's degree in Computer Science, Information Technology, or equivalent experience.

• Deep expertise in JavaScript/TypeScript (ES6+), HTML5, CSS3, and modern frontend architecture.
• Extensive experience with React.js, Node.js, and frameworks like Fastify or Express, at production scale.
• Strong experience with Java Spring Boot for building and scaling REST APIs and microservices.
• Proven experience designing microfrontend and microservice architectures.
• Strong knowledge of Azure App Services, Azure Functions, Azure DevOps, and cloud-native design patterns.
• Deep understanding of RESTful API design, distributed systems, and integration patterns.
• Track record of leading technical initiatives across multiple teams without direct management authority.
• Strong knowledge of database systems (e.g., PostgreSQL, MS SQL Server) including data modeling and performance tuning.
• Excellent communication skills, with experience presenting technical strategy to senior stakeholders.
• Experience using GitHub Copilot with modern models (e.g., Claude Opus or Sonnet) to accelerate and elevate engineering delivery.

Working environment:

• 4 days from work from office.