A Posteriori was founded in 2016 by organizational management professional and Chief Procurement Officer Sean Carroll. The name “A Posteriori” was selected to represent the true role of a management consultant, reflecting the obligation to base decisions and guidance on observations and experience, eliminating assumptions and symptoms and in favor of a focus on addressing true root causes.
Our Mission
The principals of A Posteriori have experience designing and implementing procurement processes at utilities, K-12, higher education, Counties, Towns, Villages, law enforcement, emergency management, and statewide political subdivisions in commodities, services technology and construction contracting spaces. A Posteriori brings expertise in social equity program management, sustainability and resiliency efforts, piggybacking, cooperative purchasing, omnibus and specific legislative activity related to procurement, agile and waterfall methodologies, as well as design-bid-build, design-build and public private partnership methodologies. This includes regulation and rule making process at local and state government levels. In the private sector the principals have also been involved with national telecom advocacy, small business strategic planning, vendor preparedness to respond to solicitations and local regional and statewide campaigns for issues and individuals.
The A Posteriori Difference
A Posteriori leadership remain in the government and/or active in the procurement profession locally and nationally. This allows our work on procurement policies to be informed by not just the theory of procurement or the statute but the real-life challenges for implementation, and compliance management. Our final products are operational in the real day to day practices of the profession, in addition to compliant with all laws and regulations.
For Businesses
Whether you are getting ready to make the leap to government sales or need to put a strategy together to navigate the newest legislative requirements in procurement, A Posteriori LLC is here. We excel at understanding government requirements and how to successfully navigate them. From procurement primers for a specific government environment to complete SLEd roadmaps, we bring the right experience and partners.
For Government
A Posteriori has been advocating for the government procurement function for over 2 decades, assessing current environments and supporting the plan for the future. This includes supporting clients with everything from a full Procurement strategic plan, to a roadmap for digitalization, to effectively conveying the staff and funding requirements for a procurement office.
For Other Stakeholders
Procurement expertise is often niche and travels with long-time employees who retire or change roles. Gaps in your procurement advocacy, expertise in legislative impact, and other strategic resources are often in short supply. A Posteriori and our strategic partners are always ready to address these issues in the moment.
Meet Our Founder
Founder Sean Carroll served as the chief procurement officer for the state of New York from 2016-2023, and various counties, cities and school districts across NYS state since 2005. He has served under 4 governors and managed more than 3000 contracts with annual spend exceeding $50 Billion for state agencies, state campuses and local governments. He has expertise in end to end procurement, cyber policy and terms and conditions, legislation, rule making and policy for public work, commodities, services, technology, including DEI, social equity, sustainability and fair labor practices.
From 2007-2016, Mr. Carroll served in Onondaga County, New York first as the Assistant Director in the Division of Purchase and then as the Director in the Division of Purchase for 6 years.
In the private sector, Mr. Carroll managed his own consulting firm for nearly 15 years. During this time he provided services ranging from political and non political campaign management, research, promotional material design, strategic plans for businesses and governments, mission statements, organizational and process mapping, technical writing, business development, RFP response management, proposal development, traditional and non-traditional marketing, employee motivation, and leveraging technology.
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Mr. Carroll has served as the Procurement Executive during several once in a generation emergencies including, but not limited to, Covid-19, Hurricanes Irene and Sandy, and Winter Storms Elliot (2022) and “Snowvember” (2014).
He is the coauthor of the paper “Agile Procurement – A Primer,” and has presented over 150 sessions at over 50 conferences nationwide and internationally on procurement and management topics.
He holds a bachelor’s degree from the University at Albany and an Executive Certificate in Global Supply Chain Management from Wharton. Mr. Carroll also currently serves as Chair NIGP-CPP (Certified Public Professional) Certification Commission and is a national board member of NIGP ( Institute for Government Procurement).