Training Supervisor

About Thred Up

Thred Up is transforming resale with technology and a mission to inspire the world to think secondhand first. By making it easy to buy and sell secondhand, Thred Up has become one of the world’s largest online resale platforms for apparel, shoes and accessories. Sellers love Thred Up because we make it easy to clean out their closets and unlock value for themselves or for the charity of their choice while doing good for the planet.

Buyers love shopping value, premium and luxury brands all in one place, at up to 90% off estimated retail price. Our proprietary operating platform is the foundation for our managed marketplace and consists of distributed processing infrastructure, proprietary software and systems and data science expertise. With Thred Up’s Resale-as-a-Service, some of the world’s leading brands and retailers are leveraging our platform to deliver customizable, scalable resale experiences to their customers.

Thred Up has processed over 172 million unique secondhand items from 55,000 brands across 100 categories. By extending the life cycle of clothing, Thred Up is changing the way consumers shop and ushering in a more sustainable future for the fashion industry.

Recognized on TIME Most Influential Companies of 2023, Digiday’s Work Life 50 2023, TIME’s Best Inventions of 2022, and Lattice’s People Success Awards 2022.

As a Training Supervisor, you’ll play a key role in ensuring new hires, trainees, and trainers are set up for success within the Distribution Center. You’ll support the planning and coordination of training activities, partner closely with trainers, leadership, and the Training Manager. You will provide coaching, feedback, and guidance to ensure high-quality, consistent training across all shifts. Your focus will be on day-to-day execution — supporting trainers, tracking progress, identifying opportunities for improvement, and helping create a smooth, engaging onboarding experience for every new team member.

• Support Training Operations
  • Coordinate daily and weekly training schedules in partnership with the Training Manager and Operations leadership.
  • Anticipate coverage gaps and ensure trainers and flex trainers are positioned where needed.
  • Help maintain accurate certification and readiness tracking through Workday, Stitch and other tools.
• Coach and Develop Trainers
  • Observe training sessions to ensure effective facilitation, engagement and adherence to standards.
  • Provide constructive feedback and coaching to trainers through regular check-ins and development conversations.
  • Partner with the Training Manager to identify strengths, growth opportunities and additional training needs.
• Monitor New Hire Progress
  • Track new hire performance during the training period using data from Stitch, Looker and dashboards.
  • Identify trends, accuracy issues or behavioral concerns and provide timely follow-up in collaboration with trainers.
  • Communicate with Area Managers and Operation partners to ensure smooth handoffs after training completion.
• Support Flex Trainer Development & Talent Pipeline
  • Partner with the Area Manager to mentor and develop flex trainers, setting goals and providing growth opportunities.
  • Identify team members in the DC who show potential and interest in advancing through DC development programs.
• Drive Continuous Improvement
  • Collect and share stop/start/continue feedback and new hire survey data monthly.
  • Work with trainers and the Training Manager to implement improvements in processes, tools, or content.
  • Support the rollout of new systems and updates by modeling adaptability and helping trainers learn and adopt changes.
• Maintain Strong Communication & Collaboration
  • Keep trainers, Ops and leadership informed of updates, challenges, and schedule changes. Communicate proactively about coverage, trainer performance, and new hire readiness.
  • Partner with the Training Manager and People Team on documentation, attendance, and follow-up conversations as needed.

• 3+ years of experience in warehouse, production, or training environments.
• 1–2 years of experience in a leadership, trainer, or coaching role preferred.
• Stro…