Office and HR Manager

Job Summary
We’re looking for an Office and HR Manager to be the operational backbone of our Miami office. In this fast-paced, startup-style environment, you’ll own office operations, support senior leadership, and run key

About REEF

REEF’s mission is to connect the world to your block.

We transform underutilized urban spaces into neighborhood hubs that connect people to locally curated goods, services, and experiences. Together we are leveraging the power of proximity to keep our communities moving forward in a sustainable and thoughtful way.

We operate in a fast-paced, constantly evolving, startup-style environment across North America, the UK, and Europe.

Position Overview

The Office and HR Manager will play a pivotal role in keeping our Miami office running smoothly while supporting leadership and key teams across HR, operations, and finance.

This role is ideal for someone who thrives in a startup environment: fast-paced, challenging, and full of significant growth opportunities. You’ll be building and improving the systems that keep everything moving in a context of constant change—from shifting priorities and new projects to evolving team structures.

You’ll be the operational backbone of the office: creating structure, keeping people and information flowing, and making sure the basics are flawless so the team can focus on high-impact work.

Key Responsibilities

Office Operations – Ensure the smooth day-to-day running of the office and a professional, welcoming environment.

• Oversee office operations and ensure a well-maintained, organized, and efficient workplace.
• Manage office supplies, equipment, IT / facility-related matters, and general upkeep.
• Act as the primary point of contact for building management, vendors, suppliers, and service providers.
• Coordinate meeting rooms, visitors, and occasional office moves or reconfigurations as the business evolves.
• Implement and oversee basic health and safety protocols within the office.
• Ensure a welcoming and professional atmosphere for visitors, partners, and team members.

Executive & Team Support – Enable leaders and teams to work efficiently by coordinating calendars, travel, and daily logistics.

• Support senior leadership with scheduling, complex travel (often multi-country, multi–time zone), and expense reports.
• Coordinate internal and external meetings across time zones with investors, advisors, lawyers, and partners.
• Prepare and polish documents, slide decks, and simple reports for internal and external stakeholders.
• Help organize workshops, team offsites, and high-priority working sessions in a rapidly changing environment.

Admin Operations – Keep critical administrative workflows organized and moving.

• Support finance with invoice processing, document collection, approvals tracking, and simple reconciliations.
• Maintain clean, structured digital and physical folders for audits, tax reviews, and legal matters.
• Coordinate execution of contracts, NDAs, and other legal documents with internal stakeholders and external counsel.

HR & People Operations – Deliver a smooth employee experience around onboarding, offboarding, and people processes.

• Coordinate onboarding and offboarding in Miami (access, equipment, welcome packs) in partnership with HR and IT.
• Maintain accurate employee lists, contact information, and distribution lists as the organization grows and restructures.
• Help coordinate trainings, compliance-related tasks, and internal announcements.
• Be a friendly, trusted point of contact for day-to-day questions about the office and basic HR processes.

What You Should Bring

• Ability to multitask, prioritize, and manage time effectively in a fast-paced, challenging environment.
• Strong organizational skills and attention to detail—you naturally bring order to moving parts.
• Excellent communication, interpersonal, and problem-solving skills; comfortable interacting with senior leadership and external partners.
• Proficiency with Microsoft Office Suite and/or Google Workspace; experience with tools like Slack, DocuSign, and basic project management software is a plus.
• High level of discretion and confidentiality in handling sensitive information (financial, legal, and HR).
• Proactive, resourceful, and self-motivated, with a strong “I’ll figure it out” mindset and desire for significant growth.
• Willingness to work long hours with a shifting schedule when needed to support key deadlines and initiatives.

What We’ll Provide

• Competitive pay
• Medical
• Dental
• Vision
• Life and Disability
• 401(k)
• Paid Time Off (PTO)