Senior Platform Engineer

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: 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.

Position Purpose: We are looking for a Senior / Lead Platform Engineer to lead our Automation team within Platform Engineering. This role is responsible for designing, building, and operating scalable platform capabilities with a strong emphasis on GitHub Enterprise (GHE) administration, governance, and developer enablement.

You will play a key leadership role in shaping our GitOps strategy, CI/CD standards, and Internal Developer Platform (IDP) while driving automation, consistency, and self-service across engineering teams.

The ideal candidate combines strong platform engineering expertise, hands-on development skills, and emerging AI/automation capabilities.

Responsibilities

Primary duties will include:

Leadership & Strategy

• Lead and mentor a team of platform/automation engineers
• Define and drive the platform engineering roadmap aligned with organisational goals
• Collaborate with stakeholders (engineering, security, DevOps, leadership) to deliver scalable solutions
• Establish best practices for GitOps, CI/CD, and platform governance

GitHub Enterprise (GHE) Administration & Governance

• Own and manage GitHub Enterprise (Cloud/Server) at scale
• Design and implement org/repo structures aligned to business verticals
• Define and enforce RBAC models (teams, roles, permissions, CODEOWNERS)
• Standardise repository templates, workflows, and policies
• Implement security controls (branch protections, secret scanning, Dependabot, audit compliance)
• Automate onboarding/offboarding of teams and repositories
• Provide developer enablement and support across GHE ecosystem

Platform Engineering & Automation

• Build and operate an Internal Developer Platform (IDP) to enable self-service capabilities
• Design reusable CI/CD pipelines (GitHub Actions / Azure DevOps)
• Drive infrastructure as code (Terraform) and GitOps practices
• Automate platform workflows including provisioning, deployments, and compliance
• Integrate tools across ecosystem (Kubernetes, cloud, identity, secrets management)

Development & AI Enablement (Preferred)

• Contribute to platform tooling using PowerShell, Python, Go, or similar
• Build automation solutions leveraging APIs and event-driven workflows
• Explore and implement AI-driven automation (e.g., incident analysis, developer assistance, chatops)
• Improve developer experience through intelligent tooling and integration

Qualifications

To land this role you will need:

• Strong experience in Platform Engineering / DevOps / SRE roles

• Hands-on expertise with GitHub Enterprise administration

• Deep understanding of:

• Git, GitHub workflows, Actions

• RBAC and organisational structures

• Experience with:

• Terraform / Infrastructure as Code

• Kubernetes (AKS, Rancher, or similar)

• CI/CD design and implementation

• Strong scripting/programming skills (PowerShell, Python, or Go)

• Experience leading or mentoring engineers (team lead or senior role)

• Strong problem-solving and system design skills

What makes you stand out:

• Experience building or operating an Internal Developer Platform (IDP)
• Familiarity with GitOps (Argo CD, Kustomize, Helm)
• Exposure to AI/ML or intelligent automation use cases
• Experience with enterprise-scale governance and compliance (SOX, audit, controls)
• Knowledge of cloud platforms (Azure preferred)

Working environment:

• Hybrid role, 4 days in-office.

#LI-Hybrid #LI-MA1