Early Careers: Mergers & Acquisitions Associate Project Manager
Aon
St. Louis, MO · Posted November 12, 2026
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Where St. Louis, MO ranks
Where St. Louis, MO placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #9Best all-round cities for new graduates in the Midwest52 / 100 · of 20
- #9Cities hosting the most business conferences in the Midwest8 conferences · of 12
- #9Cities hosting the most legal services conferences4 conferences · of 17
- #11Best cities for government pay after cost of living$123k · of 18
- #11Best cities for entry-level jobs that want AI skills in the Midwest4% · of 52
- #12Best all-round cities for remote workers in the Midwest42 / 100 · of 20
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About the job
Early Careers: Human Capital Mergers & Acquisitions – Associate Project Manager Interested in a career in Mergers & Acquisitions? If you enjoy building relationships with clients and colleagues, analyzing data, and driving innovation, apply today to join Aon’s Mergers & Acquisitions team! We are hiring a Human Capital M&A Associate Project Manager for our St. Louis Mergers & Acquisitions human capital diligence team. As part of an industry-leading team within our M&A and Transaction Solutions business group, you will help advise clients by delivering innovative and effective solutions. Location: St. Louis, MO Recently voted one of the Best Employers for New Grads by Forbes, we are a leading global professional services firm providing a broad range of risk, reinsurance, and health and wealth solutions to our clients. Over 60,000 colleagues in over 120 countries empower results for clients by using proprietary data and analytics to deliver insights that reduce volatility and improve performance. Aon is in the business of better decisions At Aon, we shape decisions for the better to protect and enrich the lives of people around the world. As an organization, we are united through trust as one inclusive team and we are passionate about helping our colleagues and clients succeed. What the day will look like Assist with leading and supporting M&A human capital due diligence engagements Work directly with private equity or corporate clients as well as their other outside advisors which include tax, legal and financial advisors. Coordinate with internal resources including health, retirement and talent teams, actuarial and financial experts, originators and other team members to develop diligence findings and solutions Assist with managing and executing client deliverables including an end-of-project report, interim email updates, and phone conversations Analyze employee demographics, health plan insurance coverage and claims history, retirement programs, executive compensation, worker classification, ERISA compliance, and the people-related matters of the draft purchase agreement and disclosures Work with and assist originators in establishing client relationships, developing new business opportunities, and converting due diligence targets to ongoing clients Assist with providing ongoing relationship management oversight to private equity clients Help prepare proposals and make presentations to clients How this opportunity is different These roles fall under Aon’s Early Career Development program, known as Launch. Building on the development colleagues receive in the role they are hired into, the Launch program is a supplemental development program for recent college recruits to mentor and develop future leaders of the firm. This 10-month development program begins every summer and includes in-person sessions, networking opportunities, self-study and global leader calls. Skills and experience that will lead to success We are looking for collaborators, critical thinkers, problem solvers, excellent teammates, effective communicators, relationship builders, and future leaders. We strive to recruit a diverse group of hardworking individuals who offer varying experiences, backgrounds, and strengths to ensure we can continue to offer the most innovative solutions. Additionally, we take into consideration the following: Ability to work on multiple projects at one time Project management – coordinate activities and information flow from a group of people within specified time frames Strategic and analytical skills – attention to detail while also being able to draw connections in order to provide overall conclusions Strong verbal and written communication skills – ability to communicate well and at the appropriate level with a wide range of colleagues Interest in learning about human capital solutions and how they apply to businesses of all sizes and industries Ability to perform under stress / tight time frames Ability to develop relationships / build confidence of others (both internally and externally) based upon work performed Financial – basic understanding of financial statements, reports, and accounting Results oriented Proficiency with Word, Excel, and PowerPoint Preferred Experience Background in human resources, M&A, health and benefits analytics, or business administration and management Experience working in both office and virtual settings Education & Application Information Bachelor’s degree preferred, ideally with a major in Business Administration, Business Management, or HR Management, though all majors are welcome. Applicants should graduate between Winter 2026 – Summer 2027 with a GPA of 3.0 or higher. Aon is not accepting unsolicited resumes from search firms for this position. If you are a search firm, you will not be compensated in any way for your submission of a candidate, even if Aon hires that candidate. Pay Transparency Laws The salary range for this position (intended for U.S. applicants) is $63,000 to $80,500 annually. The actual salary will vary based on applicant’s education, experience, skills, and abilities, as well as internal equity and alignment with market data. The salary may also be adjusted based on applicant’s geographic location. Aon offers a comprehensive package of benefits for full-time and regular part-time colleagues, including, but not limited to: a 401(k) savings plan with employer contributions; an employee stock purchase plan; consideration for long-term incentive awards at Aon’s discretion; medical, dental and vision insurance, various types of leaves of absence, paid time off, including 12 paid holidays throughout the calendar year, 15 days of paid vacation per year, paid sick leave as provided under state and local paid sick leave laws, short-term disability and optional long-term disability, health savings account, health care and dependent care reimbursement accounts, employee and dependent life insurance and supplemental life and AD&D insurance; optional personal insurance policies, adoption assistance, tuition assistance, commuter benefits, and an employee assistance program that includes free counseling sessions. Eligibility for benefits is governed by the applicable plan documents and policies. For positions in San Francisco and Los Angeles, we will consider for employment qualified applicants with arrest and conviction record in accordance with local Fair Chance ordinances. Nothing in this job description restricts management's right to assign or reassign duties and responsibilities to this job at any time. #LI-CS6 #AonLaunchUS 2590856
Early Careers: Human Capital Mergers & Acquisitions – Associate Project Manager Interested in a career in Mergers & Acquisitions? If you enjoy building relationships with clients and colleagues, analyzing data, and driving innovation, apply today to join Aon’s Mergers & Acquisitions team! We are hiring a Human Capital M&A Associate Project Manager for our St. Louis Mergers & Acquisitions human capital diligence team. As part of an industry-leading team within our M&A and Transaction Solutions business group, you will help advise clients by delivering innovative and effective solutions. Location: St. Louis, MO Recently voted one of the Best Employers for New Grads by Forbes, we are a leading global professional services firm providing a broad range of risk, reinsurance, and health and wealth solutions to our clients. Over 60,000 colleagues in over 120 countries empower results for clients by using proprietary data and analytics to deliver insights that reduce volatility and improve performance. Aon is in the business of better decisions At Aon, we shape decisions for the better to protect and enrich the lives of people around the world. As an organization, we are united through trust as one inclusive team and we are passionate about helping our colleagues and clients succeed. What the day will look like Assist with leading and supporting M&A human capital due diligence engagements Work directly with private equity or corporate clients as well as their other outside advisors which include tax, legal and financial advisors. Coordinate with internal resources including health, retirement and talent teams, actuarial and financial experts, originators and other team members to develop diligence findings and solutions Assist with managing and executing client deliverables including an end-of-project report, interim email updates, and phone conversations Analyze employee demographics, health plan insurance coverage and claims history, retirement programs, executive compensation, worker classification, ERISA compliance, and the people-related matters of the draft purchase agreement and disclosures Work with and assist originators in establishing client relationships, developing new business opportunities, and converting due diligence targets to ongoing clients Assist with providing ongoing relationship management oversight to private equity clients Help prepare proposals and make presentations to clients How this opportunity is different These roles fall under Aon’s Early Career Development program, known as Launch. Building on the development colleagues receive in the role they are hired into, the Launch program is a supplemental development program for recent college recruits to mentor and develop future leaders of the firm. This 10-month development program begins every summer and includes in-person sessions, networking opportunities, self-study and global leader calls. Skills and experience that will lead to success We are looking for collaborators, critical thinkers, problem solvers, excellent teammates, effective communicators, relationship builders, and future leaders. We strive to recruit a diverse group of hardworking individuals who offer varying experiences, backgrounds, and strengths to ensure we can continue to offer the most innovative solutions. Additionally, we take into consideration the following: Ability to work on multiple projects at one time Project management – coordinate activities and information flow from a group of people within specified time frames Strategic and analytical skills – attention to detail while also being able to draw connections in order to provide overall conclusions Strong verbal and written communication skills – ability to communicate well and at the appropriate level with a wide range of colleagues Interest in learning about human capital solutions and how they apply to businesses of all sizes and industries Ability to perform under stress / tight time frames Ability to develop relationships / build confidence of others (both internally and externally) based upon work performed Financial – basic understanding of financial statements, reports, and accounting Results oriented Proficiency with Word, Excel, and PowerPoint Preferred Experience Background in human resources, M&A, health and benefits analytics, or business administration and management Experience working in both office and virtual settings Education & Application Information Bachelor’s degree preferred, ideally with a major in Business Administration, Business Management, or HR Management, though all majors are welcome. Applicants should graduate between Winter 2026 – Summer 2027 with a GPA of 3.0 or higher. Aon is not accepting unsolicited resumes from search firms for this position. If you are a search firm, you will not be compensated in any way for your submission of a candidate, even if Aon hires that candidate. Pay Transparency Laws The salary range for this position (intended for U.S. applicants) is $63,000 to $80,500 annually. The actual salary will vary based on applicant’s education, experience, skills, and abilities, as well as internal equity and alignment with market data. The salary may also be adjusted based on applicant’s geographic location. Aon offers a comprehensive package of benefits for full-time and regular part-time colleagues, including, but not limited to: a 401(k) savings plan with employer contributions; an employee stock purchase plan; consideration for long-term incentive awards at Aon’s discretion; medical, dental and vision insurance, various types of leaves of absence, paid time off, including 12 paid holidays throughout the calendar year, 15 days of paid vacation per year, paid sick leave as provided under state and local paid sick leave laws, short-term disability and optional long-term disability, health savings account, health care and dependent care reimbursement accounts, employee and dependent life insurance and supplemental life and AD&D insurance; optional personal insurance policies, adoption assistance, tuition assistance, commuter benefits, and an employee assistance program that includes free counseling sessions. Eligibility for benefits is governed by the applicable plan documents and policies. For positions in San Francisco and Los Angeles, we will consider for employment qualified applicants with arrest and conviction record in accordance with local Fair Chance ordinances. Nothing in this job description restricts management's right to assign or reassign duties and responsibilities to this job at any time. #LI-CS6 #AonLaunchUS