Professional Summary
Overview
Work History
Education
Skills
Personal Information
Section name
Languages
Timeline

Sergio I Castillo

Mobilelink
Hot Springs,AR
1
Language
12
years of professional experience

Multi-Unit Operations • P&L Management • Sales Leadership • KPI Analysis • Talent Development • Recruiting & Onboarding • Performance Management • Succession Planning • Workforce Planning • Labor Management • Operational Compliance • Customer Experience

Multi-unit sales and operations leader with 12+ years of progressive retail leadership experience, currently overseeing 13 locations and approximately 60 employees across Texas and Arkansas. Proven record of driving profitability, developing leadership talent, and building high-performing teams, including leading the #1-ranked territory for three consecutive years and promoting eight employees into Store Manager roles. Experienced in P&L management, KPI analysis, recruiting, performance management, and succession planning.

Work History

Territory Manager

4 Years 10 Months
Mobilelink | 12.2021 - Current

• Lead sales, operations, and financial performance across 13 retail locations with approximately 60 employees and 13 Store Managers.
• Manage a territory generating approximately $300K in monthly gross profit, with accountability for sales growth, profitability, staffing, labor, customer experience, and operational execution.
• Built and sustained the #1-ranked territory for three consecutive years through strategic performance management, leadership development, and execution.
• Recruited, coached, and developed management talent, promoting 8 Sales Representatives into Store Manager positions and strengthening the internal succession pipeline.
• Analyze store-level KPIs and P&L performance to identify trends, correct performance gaps, and develop targeted action plans.
• Lead business reviews and field visits with Store Managers, establishing measurable expectations and accountability for sales, profitability, labor, and operational performance.
• Ensure compliance across inventory, labor controls, scheduling, timekeeping, merchandising, and company operating standards.

Floating District Manager

1 Year 4 Months
T-Mobile | 08.2020 - 12.2021
  • Directed district operations across multiple locations, aligning store execution with company standards.
  • Led store managers, reinforcing performance expectations, coaching, and accountability practices.
  • Boosted employee morale by creating a positive work environment that encouraged teamwork, collaboration, and professional growth opportunities.

Retail Trainer Store Manager

4 Years 4 Months
T-Mobile | 04.2016 - 08.2020
  • Managed daily sales and operations for a high-performing retail location generating approximately $35,000–$40,000 in monthly Gross Profit.
  • Delivered retail training programs covering sales techniques, product knowledge, and customer service standards.
  • Coached associates on onboarding procedures, merchandising expectations, and daily operational workflows.
  • Evaluated employee progress through regular assessments and provided constructive feedback to promote continuous improvement within the team.

Retail Assistant Manager

1 Year 4 Months
Sprint | 09.2014 - 01.2016
  • Led daily store operations, ensuring consistent compliance with merchandising, service, and inventory standards.
  • Supervised sales associates, coached performance, and reinforced product knowledge across departments.
  • Partnered with store leadership to execute promotions, visual displays, and daily execution goals.

Education

High School Diploma

Caddo Hills Highschool | Caddo Gap | 05.2014
National Park College

Skills

Customer relationship management
Client relationship management
Team collaboration and leadership
Sales expertise
Lead prospecting
Sales strategy
Multitasking and organization
Team collaboration

Personal Information

Title: EXPERIENCED LEADER

Section name

People Developer ~ Servant Leader ~ Top Sales Performer

Languages

Spanish
Native or Bilingual

Timeline

Territory Manager

Mobilelink
12.2021 - CurrentRead More

Floating District Manager

T-Mobile
08.2020 - 12.2021Read More

Retail Trainer Store Manager

T-Mobile
04.2016 - 08.2020Read More

Retail Assistant Manager

Sprint
09.2014 - 01.2016Read More

Caddo Hills Highschool

High School Diploma
Read More
Sergio I Castillo