Meet Your Extended Team

Scale your business the smart way with high-level support, tailored to your needs.

Get to know your dedicated support team—experts in accounting, HR, and business compliance with over 15 years experience—ready to be the seamless extension of your team and help you scale with confidence.

Achieve more with expert guidance + support.

Meet the Team at Exclusive Business Concierge, your expert team for scaling your business fast. The EBC team sitting on a sofa in front of large windows in a modern indoor space, engaging in conversation.
Meet Marisa Portillo, CEO and Business Strategist at Exclusive Business Concierge your extended team for fast business growth. Marisa wearing a brown leather jacket and beige pants, sitting on a cream-colored chair against a plain light background.

A Little About Us…

  • CEO & Founder

    For over 15 years, Marisa has successfully propelled businesses to new heights of success. As a senior executive with deep experience in business operations and finance across High-Tech Startup and Biotech sectors, she is a trusted partner who delivers end-to-end management solutions, allowing clients to focus on innovation and growth. Marisa is a performance-driven entrepreneur with a proven ability to lead business strategy development and a relentless drive for long-term, sustainable growth. Her commitment to continuous improvement shines through in her expertise in streamlining processes and technology-driven transformations. At Exclusive Business Concierge, she oversees every facet of the company—from business development and strategic direction to overseeing seamless outsourcing delivery.

    With Marisa as an asset on your team, you’ll gain a dedicated partner who aligns with your vision and accelerates your path to success.

Meet Antonio Arriaza, Business Development Manager at Exclusive Business Concierge. Image of Antonio dressed in a light gray blazer and white shirt, standing with arms crossed next to a white pillar.

  • Business Development Manager

    A dedicated accounting professional, Antonio is passionate about empowering businesses to make informed decisions. With a solid foundation in financial reporting, tax preparation, auditing, and financial analysis, Antonio has a proven track record helping organizations optimize their financial performance and streamline operations.

    It’s this background that allows him to collaborate effectively with cross-functional teams and convey complex financial information to stakeholders. Antonio believes that sound financial practices are essential for achieving organizational goals. With his talent for assessing, strategizing, and executing, he becomes a crucial extension of our clients' success teams—driving growth and ensuring excellence every step of the way.

Meet Avary Thorne, HR Operations Specialist at Exclusive Business Concierge. Image of Avary wearing a white shirt and a gray vest, standing with arms crossed against a plain white background.

  • Business Operations Specialist

    A dedicated operations professional, Avary is passionate about supporting organizations through efficient financial management and people-focused solutions. With a strong background in accounting, payroll, and human resources, she helps teams operate seamlessly while ensuring accuracy, compliance, and trust across all business functions. Avary’s balanced approach to numbers and people enables her to strengthen both the financial health and the culture of the company.

    Her talent for streamlining workflows, optimizing processes, and fostering collaboration makes her an invaluable partner to cross-functional teams. Avary believes that success begins with strong internal systems and empowered employees, and she’s committed to driving continuous improvement and operational excellence at every level of the organization.

Meet Amir Zahedinia, Accounting Integrations Expert at Exclusive Business Concierge. Image of Amir wearing a black suit, white shirt, and black tie, standing against a light background.

  • Accounting Integrations Expert

    Amir brings over 20 years of expertise in accounting, operations, and technology, making him an invaluable asset to growing businesses that need streamlined financial solutions. With a Master of Public Administration (MPA) and a background that spans both public and private sectors, Amir has an impressive track record of blending financial acumen with cutting-edge tech to drive efficiency and accuracy. He’s overseen complex financial projects, implemented advanced accounting software, and optimized operations to empower organizations to meet their strategic goals.

    Amir’s commitment to innovation in finance and his dedication to continuous improvement make him a key player in maximizing process efficiency and promoting team collaboration. Known for his expertise in data analysis, financial reporting, and system integration, he brings clarity to financial management, so you can focus on scaling your business with confidence.

Meet Toni Ponce, Operations and Human Resource Specialist at Exclusive Business Concierge. Image of Toni wearing a gray sweater, white shirt, and black pants, sitting on a gold-legged chair against a plain white background.

  • Business Operations & HR Specialist

    Toni Ponce is a versatile operations and HR professional who blends leadership, creativity, and technical skill to streamline systems and empower teams. With experience spanning retail, tech, legal, and business operations, Toni excels at balancing people-focused management with data-driven decision-making.

    In his current role, Toni works on  payroll, human resources, and accounting functions while building efficient workflows that keep daily operations running smoothly. Known for improving processes and fostering collaboration, Toni has led teams, trained staff, managed large client portfolios, and developed systems that boost both performance and morale.

    Outside of work, Toni is a self-taught coder, a musician, and a movie enthusiast — a mix of structure and creativity that mirrors their professional approach. Constantly learning and evolving, Toni brings precision, empathy, and innovation to every project, proving that successful operations thrive when both people and systems work in harmony.

Explore the Possibilities

Your business deserves better support— let’s chat!

Book your FREE discovery call and see how we can help you grow.

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Real Results, Real Clients

See what our clients have to say

  • "Absolutely Pivotal in the Success of Our Business”

    Exclusive Business Concierge is top-notch! They have been absolutely pivotal in the success of our business. When we first met Marisa, we were unraveling at the seams with invoicing/payroll issues, and in a very short period of time, they helped us get our ducks in a row and implement an effective, efficient payroll system. Beyond that, EBC has been instrumental in tax preparation, contract terminations, and employee/contractor management. I highly recommend Marisa and her team at EBC!

    SHAUN MOOSEKIAN - CEO, Creating Future Potential

  • “Attention to Detail”

    Don’t let her beautiful smile fool you.  Marisa is one tough cookie and sharp as a razor!  Her extraordinary professionalism, attention to detail and unrivaled knack for solutions, combine to make her so much more than a bookkeeper.  She’s an invaluable asset and has significantly contributed to the growth and success of our company.

    RENO R. ROLLE - Co-Founder, Boku International, Inc

  • "EBC Does It All"

    Marisa and the EBC team have been there for me since 2004. Whether it's bookkeeping via QuickBooks Online, independent contractor agreements, ACH payments, client contracts, work orders, end-of-year tax planning, or forensic accounting and P&L reports to guide our future work, EBC does it all. I can't imagine being as successful as we've been without EBC.

    MATT WARREN - President, Matt Warren Production

  • “E-Business Concierge is a Fantastic Force Multiplier”

    Entrepreneurs need to surround themselves with force multipliers so they can focus on developing customers and differentiated product solutions which are the pillars of shareholder value creation. E-Business Concierge is a fantastic force multiplier. They reliably handle key business operations, including bookkeeping, human resources, payroll, banking and supply chain management so management can prioritize customers and products.

    ANDRE DE FUSCO - CEO, Cynvenio Biosystems, Inc

  • "Reliable Problem Solver"

    Marisa and the team at ADRx Inc have worked together for 4 years. She has managed all aspects of finance from purchasing, basic accounting, monthly reports, payroll and human resources support. Marisa is quick-witted and a self-starter. I feel comfortable with Marisa’s abilities to identify issues before they become a problem and deliver effective solutions for me to to consider. Her work has allowed the team to stay focused on its research and development activities. Marisa has a can-do attitude and always delivers.

    JAMES TREANOR - President & CEO, ADRx Inc.

  • “Better Ability to Manage My Cash Flow”

    I want to take a minute and thank you for the incredibly smooth transition from our internal bookkeeping efforts to your service. When you outlined the process and the time it would take to complete I was a bit skeptical. I kept waiting for a surprise but it never came. Your time estimates and outline of the process were spot-on. After using your service for only 2 months, I can honestly say I am more confident in the accuracy of our books and have a significantly better ability to manage my cash-flow than I ever have before. You and your teams efforts on our behalf are much appreciated.

    LEE MORGAN - ServiCorps Systems, Inc.

  • "Major Asset to Any Organization"

    I’ve worked with Exclusive on a number of different projects over the years. Their major strength is their ability to see through the clutter all the way to the finish line, and then they have the drive and determination to carry you there. This unusual combination of strategic and executional ability makes them a major asset to any organization trying to complete a difficult project, big or small.

    ALLAN DEWEY - Co-Founder, Mt. Fortune

  • “Invaluable Business Solutions”

    Marisa came into my company and immediately began the process of offering not only keen attention to detail in our accounting department but also offered us marketing solutions that brought significant profit to our company.  We grew considerably and with her business acumen skill for detail  we were able to manage the growth seamlessly.  She’s a valuable asset to any company, and I am very lucky to have used her services when I needed it most.

    BERTHA MIRANDA - Founder, Bertha Miranda Court Reporter, Inc

  • “Incomparable Organization”

    Their work on our files has made a significant difference to our business. We now have a streamlined process and incomparable organization that leaves our agents with 100% more time for prospecting. Organizing and coordinating our files has always been a daunting task for us, but they came in and managed our systems effortlessly. We are looking forward to closing many more transactions with E-Business Concierge in the years to come."

    SERGIO GONZALEZ - Founder, SG Associates Real Estate

  • “The Breadth of Services Offered is Extremely Diverse”

    The team at EBC were instrumental in getting our biotech company up and running and they continue to be a key part of the team, supporting our ongoing operations. The breadth of services offered is extremely diverse and includes key organizational functions such as human resources, finance and real estate. The quality and level of support is high and has enabled us to focus on what is most important - driving our science forwards. The team are a pleasure to work with and I cannot recommend them highly enough. 

    DAVID LUCAS - Vice President Operations, A2 Biotherapeutics