Rainier "Shain" Miles

Human-Centered Operations & Admin Support | Executive Function Consulting

Oviedo, Principality of Asturias, Spain

About

I support mission driven organizations, small teams, and individuals with administrative support, operations management, program coordination, and executive function coaching. My work is rooted in a belief that strong systems create access. I began my career supporting at risk youth and have carried that commitment into roles across grantmaking, healthcare administration, program coordination, and coaching. Along the way, I have learned that when people feel supported and systems are clear, meaningful work becomes more sustainable. I bring a blend of operational clarity and human centered support to everything I do. Whether I am coordinating programs, improving workflows, or coaching individuals on organization and follow through, my goal is always the same: to create structures that help people feel capable, supported, and focused. I have partnered with nonprofits and community based organizations working in reproductive justice, disability justice, LGBTQ+ advocacy, and community care. I am known for being proactive, thoughtful, and easy to work with, and for communicating effectively with everyone from executive leaders to community members. Focus areas Administrative and Operations Support Program and Project Coordination Grantmaking and Program Logistics Executive Function Coaching Community Engagement Equitable and Inclusive Systems

Experience

  • Grant Writer at Gender Justice League
    Mar 2026 - Present · 5 mos

  • Office Manager at Givver
    Feb 2026 - Present · 6 mos

  • Executive Function Consultant at Rare Bear Consulting
    Jan 2021 - Present · 5 yrs 7 mos

    • Teach clients time management skills, doubling efficiency • Connect clients to appropriate resources, resulting in a 30% decrease in expenses • Advise clients on proper project prioritization, increasing productivity by 25%

  • Program Associate, Black Trans Fund at Groundswell Fund
    Dec 2022 - Jan 2025 · 2 yrs 2 mos

    Oversaw administrative and programmatic tasks involving grants management, field building, funder organizing, and communications. • Managed intake & tracking of applicants, including declining organizations who do not meet the criteria and following up with applicants for more information. • Built and maintained strong, collaborative relationships with funder colleagues, individual donors, grantees, and other key partners. • Conducted scheduling and calendar maintenance for Black Trans Fund, including coordinating calls, meetings, and travel for Program Director and Program Manager, and other Groundswell stakeholders as necessary. • Developed a Disability Justice grantmaking program, including field analysis, grantmaking criteria, grantmaking budget, and contracting advisors.

  • Agent at LiveWorld
    Feb 2022 - Feb 2023 · 1 yr 1 mo

    Manage and coordinate daily shift tasks including scheduling, technical support, and client escalation. ● Approve and deny schedule changes for over 150 employees. ● Monitor clock in and out procedure during a 3.5 hour shift. ● Document and forward the proper information to managers to escalate client issues ● Troubleshoot employee technical issues regarding passwords, connectivity, and software.