Sr. Director, Site Reliability Engineering, Mobility

WEX•Maine, NY

19h•$195,000 - $239,000

About The Position

As the Senior Director of SRE, you will be the architect leader of resilience for our global mobility platform, leading a high-performing organization of engineers dedicated to ensuring that our services—from real-time GPS tracking and dispatching to global payment processing—are seamless, scalable, and secure, bridging the gap between ambitious product velocity and the uncompromising "five-nines" availability required for a world in motion. We are seeking a seasoned Sr. Director of Engineering in the WEX Mobility Engineering organization to lead engineering for one of the Mobility verticals that caters to payments solutions. The Mobility team spans across the USA, India, and Brazil, providing SaaS and API solutions to various customers in North America. WEX Mobility products enable credit issuance to fleet companies and owner-operators in the form of WEX Credit Cards, widely accepted at fueling stations and select other merchants in the US, allowing fleet managers and operators to configure spend controls that restrict fleet members to use their card only at preconfigured merchants, for configured product families, and for certain amounts.

Requirements

Education: BS/MS in Computer Science, Engineering, or equivalent practical experience.
Experience: 12+ years in SRE, with at least 5 years in a senior leadership role (Director or above) managing managers.
Scale: Proven track record of managing distributed systems at a "Hyper-scale" level (e.g., millions of requests per second).
Platform: Expertise in rapid development and deployment using cloud computing platforms such as AWS or Azure.
Technical Depth: Deep understanding of Kubernetes, service mesh (Istio/Linkerd), edge computing, and global traffic management.
Leadership: Excellent leadership, team-building, and dynamic decision-making skills. Ability to deal with ambiguity and thrive in a fast-paced, dynamic environment. Excellent verbal and written communication skills.

Nice To Haves

Experience with high-concurrency, geospatial, or real-time marketplace dynamics is a significant plus.
Experience building high-performance distributed systems at internet-scale companies.
Experience building credit card products, or experience developing solutions in a scheme/network.
Experience building or managing fleet systems.
Experience working on closed-loop card systems.

Responsibilities

Strategic Leadership: Define the multi-year SRE roadmap, pivoting from reactive firefighting to proactive, automated platform health.
Global Scalability: Oversee infrastructure that supports millions of concurrent trips across diverse geographic regions, accounting for local regulatory and latency requirements.
Incident Management & Prevention: Own the end-to-end incident lifecycle. You won't just manage the "Big Outages"; you’ll foster a blameless culture focused on root-cause analysis (RCA) and permanent remediation.
Predictive Incident Management: Deploy AI/ML models to analyze historical telemetry data to predict capacity "hotspots" and system fatigue hours before they manifest.
Error Budget Oversight: Partner with Product and Engineering VPs to balance innovation speed with reliability via strictly enforced Service Level Objectives (SLOs) and Service Level Indicators (SLIs).
Planning: Work closely with product and commercial partners to drive, prioritize, and work backwards from the customer requirements and exceed expected outcomes.
Execution: Drive effective monthly, weekly, and quarterly mechanisms to plan, execute, and audit workstreams.
Cloud Cost & Efficiency: Optimize a massive global cloud footprint (AWS/GCP/Azure), ensuring performance doesn't come at the cost of unsustainable burn.
Platform Engineering: Champion "Infrastructure as Code" (IaC) and self-service tooling so that developers can deploy safely without manual intervention.
Team management and growth: Establish a robust and clear engineering roadmap to maintain clarity and motivation for the engineering team. Maintain career growth plans and provide monthly and quarterly feedback for individuals’ continual progress.
Productivity: Establish measurement of metrics-driven dev productivity across Mobility SRE org
Communication: Comfortably present, influence, and communicate to the senior leadership team. Provide regular updates and insights to senior leadership on the challenges and opportunities within the Mobility domain.Effectively manage up, across, and down with tangible written strategy documents or plans.