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About the Role

At WEX, a Software Development Engineer (SDE) Level 4 is a recognized Staff/Lead technical expert who provides cross-platform strategic leadership. You will influence global system architecture, help define enterprise-wide standards, and actively participate in the functional design/redesign of business processes to maximize AI and automation. In this role, you will act as a visionary builder and strategic anchor for WEX’s AI-driven opportunities. You will architect complex autonomous systems, champion enterprise-wide AI adoption, and define the orchestration logic that enables next-generation agentic AI to scale securely and efficiently across multiple domains and services.

Responsibilities

Architect complex autonomous systems and design multi-agent workflows, defining orchestration logic across multiple domains and services while handling advanced state management, memory persistence, and tool interactions.
Champion the secure integration of LLMs into enterprise process workflows.
Mentor senior engineers across the organization on advanced AI leverage and agentic design patterns.
Filter industry AI trends through rigorous cost-benefit analysis.
Build prototypes and "Golden Paths" that enable other teams to adopt high-value, cutting-edge technologies safely and rapidly.
Solve architectural bottlenecks that cross team boundaries.
Review designs from other teams to ensure consistency and define the "Golden Path" for how disparate services should communicate.
Lead Threat Modeling sessions to ensure security across multiple teams.
Participate in the definition of security and compliance standards for enterprise AI adoption.
Demonstrate high standards for Code and Configuration Quality.
Define style guides, documentation templates, and configuration guardrails, and build shared custom components or configuration frameworks.
Create reusable CI/CD templates (e.g., Helm Charts, Argo Workflows), deployment modules, and automated sandbox-seeding scripts that standardize how other teams deploy and enforce privacy compliance.
Define the standard SLIs/SLOs that teams must monitor and drive chaos testing initiatives across the engineering organization.
Lead the Post-Mortem Corrective of Errors (COE) process, enforcing action items to prevent recurrence.
Build "Self-Service" platform capabilities that allow business units to self-solve data issues without logging support tickets.
Elicit requirements for initiatives that span multiple teams, identifying data model conflicts early.
Validate all technical requirements against broader business KPIs (e.g., Retention, CAC, Time-to-first-dollar).
Manage dependencies on the quarterly roadmap, identifying "Critical Path" risks weeks in advance.
Ensure the architecture supports the future roadmap, not just the current sprint, and negotiate timelines seamlessly with other teams.
Organize and lead technical workshops (e.g., Event Storming, Architecture Reviews).
Translate complex architectural risks into "Business Language" for stakeholders, explaining why refactoring matters in terms of revenue or customer experience.
Identify friction between teams (e.g., API conflicts, mismatched release cadences) and mediate solutions (e.g., implementing Contract Testing).
Build trust across organizational boundaries and de-escalate complex technical disputes.
Act as a "polyglot" leader who moves across disparate stacks to unblock teams.
Coach senior peers on "learning how to learn" and institutionalize feedback loops.
Spot high-potential SDE 2s and 3s, giving them visibility and actively advocating for their career advancement.

Requirements

Recognized Staff/Lead technical expert
Provides cross-platform strategic leadership
Influences global system architecture
Helps define enterprise-wide standards
Actively participates in functional design/redesign of business processes to maximize AI and automation
Acts as a visionary builder and strategic anchor for WEX’s AI-driven opportunities
Architects complex autonomous systems
Champions enterprise-wide AI adoption
Defines orchestration logic that enables next-generation agentic AI to scale securely and efficiently across multiple domains and services
Designs multi-agent workflows
Handles advanced state management, memory persistence, and tool interactions
Champions secure integration of LLMs into enterprise process workflows
Mentors senior engineers across the organization on advanced AI leverage and agentic design patterns
Filters industry AI trends through rigorous cost-benefit analysis
Builds prototypes and "Golden Paths" that enable other teams to adopt high-value, cutting-edge technologies safely and rapidly
Solves architectural bottlenecks that cross team boundaries
Reviews designs from other teams to ensure consistency
Defines the "Golden Path" for how disparate services should communicate
Leads Threat Modeling sessions to ensure security across multiple teams
Participates in the definition of security and compliance standards for enterprise AI adoption
Demonstrates high standards for Code and Configuration Quality
Defines style guides, documentation templates, and configuration guardrails
Builds shared custom components or configuration frameworks
Creates reusable CI/CD templates (e.g., Helm Charts, Argo Workflows), deployment modules, and automated sandbox-seeding scripts that standardize how other teams deploy and enforce privacy compliance
Defines the standard SLIs/SLOs that teams must monitor
Drives chaos testing initiatives across the engineering organization
Leads the Post-Mortem Corrective of Errors (COE) process, enforcing action items to prevent recurrence
Builds "Self-Service" platform capabilities that allow business units to self-solve data issues without logging support tickets
Elicits requirements for initiatives that span multiple teams
Identifies data model conflicts early
Validates all technical requirements against broader business KPIs (e.g., Retention, CAC, Time-to-first-dollar)
Manages dependencies on the quarterly roadmap
Identifies "Critical Path" risks weeks in advance
Ensures the architecture supports the future roadmap, not just the current sprint
Negotiates timelines seamlessly with other teams
Organizes and leads technical workshops (e.g., Event Storming, Architecture Reviews)
Translates complex architectural risks into "Business Language" for stakeholders
Explains why refactoring matters in terms of revenue or customer experience
Identifies friction between teams (e.g., API conflicts, mismatched release cadences)
Mediates solutions (e.g., implementing Contract Testing)
Builds trust across organizational boundaries
De-escalates complex technical disputes
Acts as a "polyglot" leader who moves across disparate stacks to unblock teams
Coaches senior peers on "learning how to learn"
Institutionalizes feedback loops
Spots high-potential SDE 2s and 3s
Gives high-potential SDEs visibility
Actively advocates for career advancement of high-potential SDEs

Skills

AI
Automation
Agentic AI
Autonomous Systems
LLMs
CI/CD
Cloud Infrastructure
Reliability
Chaos Engineering
Data Model Conflicts
Contract Testing

Location

Remote

Work Type

Full-time

Experience Level

Staff/Lead
Level 4

Salary/Compensations

$140,600.00 - $173,100.00

Benefits

Health, dental and vision insurances
Retirement savings plan
Paid time off
Health savings account
Flexible spending accounts
Life insurance
Disability insurance
Tuition reimbursement

About the Company

WEX is a global commerce platform that helps businesses solve for operational complexities like employee benefits, managing and mobilizing fleets, and streamlining payments.
With over 6,500 employees, we work with large and small companies in more than 200 countries and territories, and can tailor our services to meet the unique needs of their businesses.
We hire people who share our passion for continuous innovation and client service that is unparalleled in the industry.
Offering comprehensive and market competitive benefits, our offerings are designed to support your personal and professional well-being.
If you’re looking for a growing career - come be part of WEX today.
To learn more about our employee benefits, please click here.

Equal Opportunity

WEX is an equal opportunity employer committed to diversity and inclusion in the workplace.
All qualified applicants will receive consideration for employment without regard to sex, race, color, age, national origin, religion, sexual orientation, gender identity, protected veteran status, disability or other protected status.
WEX promotes a drug-free workplace.
Qualified individuals with a disability have the right to request a reasonable accommodation.
If you require a reasonable accommodation as a result of your disability at any point in the job application process, please submit your request through our Reasonable Accommodation Request Form.
This form is for accommodation requests only and cannot be used to inquire about the status of applications.