Lonnie Whisker
Global Finance & Process Improvement Leader | Driving Enterprise Efficiency & Operational Excellence
- Role
- Organizational Effectiveness Senior Manager at Sidley Austin LLP
- Location
- Chicago, IL, US
- LinkedIn followers
- 500 followers
About Lonnie Whisker
Global finance and process improvement leader with close to 20 years of experience driving operational excellence, financial optimization, and enterprise transformation. Expert in the Lean Six Sigma methodology, change management, and cross-functional project management. Proven success improving global business processes across finance, legal, and operations environments.Measurable Impact ExamplesWhile leading an enterprise finance transformation in a previous role, redesigned a billing process toeliminate manual inefficiencies and improve accuracy. Reduced invoice cycle time from 77 to 55days (29%), shortened invoice adjustment turnaround time from 63 to 40 days (37%), anddecreased Weighted Average Days Late from 97 to 40 days (59%). Optimized processes to enhancedata accuracy, cash flow, and drive operational efficiency.In the same role, explored and deployed AI and automation solutions to enhance finance operations. Collaborated with consulting partners and internal Oracle and Robotic Process Automation (RPA) experts to evaluate platforms such as Celonis and Kognitos, driving data-informed automation strategies that improved efficiency, accuracy, and process performance.
Experience
Organizational Effectiveness Senior Manager
Sep 2025 — Present · Chicago, IL, US
Education
Lincoln Christian University
Bachelor's degree
Walden University
Master of Business Administration (MBA), Corporate Finance
Walden University
Doctor of Business Administration (DBA)
Skills
- Marketing
- Nonprofits
- Staff Development
- Coaching
- Grant Writing
- Leadership
- Data Analysis
- Six Sigma
- Change Management
- Organizational Development
- Team Leadership
- Public Speaking
- Project Planning
- Leadership Development
- Program Management
- Customer Service
- Research
- Proposal Writing
- Strategic Planning
- Team Building
- Management
- Project Management
- Budgets
- Training
- Process Improvement
- Analysis
- Cross-Functional Team Leadership
- Public Relations
- Strategy
Find verified contacts for anyone on LinkedIn
Unifers gives sales teams verified emails and direct dials, enriched profiles, and outreach that lands in the inbox.
Free plan included · No credit card required
This profile is compiled from publicly available professional sources. Unifers is not affiliated with or endorsed by LinkedIn. Request removal of this profile.