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AP Accounting Supervisor

Location: Warsaw,

Company: Marsh & McLennan Companies

Job Id: R_055194-en

Marsh & McLennan Companies brings together more than 60,000 experts in risk, strategy, and people across Marsh, Guy Carpenter, Mercer, and Oliver Wyman, serving clients in over 130 countries. Marsh enables enterprise worldwide by helping clients manage risks, transforming uncertainty into opportunity. Guy Carpenter helps clients grow profitably with reinsurance broking expertise, advisory services, and advanced analytics. Mercer helps organizations advance the health, wealth, and careers of their most vital asset — their people. Oliver Wyman’s expertise in strategy, operations, risk, and organization transformation changes what is possible for our clients, their industries, and society. Together, we combine a unique range of capabilities to help our clients solve problems, seize opportunities, and build lasting success in increasingly complex operating environments.

  • Awarded 1 of America’s Best Large Employers by Forbes
  • Career & Development Opportunities across all operating companies
  • Opportunity for Travel
  • Competitive Salary

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Success Profile

What does it take to be a successful AP Accounting Supervisor with Marsh & McLennan Companies?
Check out the traits below to see if you have the right combination of talents.

  • Analytical 10
  • Deadline-oriented 8
  • Detail-oriented 7
  • Proactive 10
  • Problem-solver 10
  • Productive 7
Traits are on a scale of 0 to 10

Addtional Traits

  • Adaptable
  • Collaborative
  • Efficient
  • Goal-oriented
  • Independent
  • Responsible
  • Results-driven
  • Self-starter
  • Sense of humor

Back to Job Navigation (Success)

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This company gives me the opportunity to work in a dynamic environment, always striving for the better. I have to admit, this makes it challenging at times, but to me, this is exactly what makes people grow. I really feel that MMC is the place which gives you a lot of opportunities and supports this growth, both on the personal level and on the bigger scale, rewarding the innovative ways of thinking. However, the biggest merit for me are the people who I work with – always there, both to work together and to laugh with you, which really makes your day, every day!

— Anna Lewicka – GL Senior Analyst

I have a pleasure to be a supervisor of GL team, which is working really hard for to achieve better and better results. All these employees are able to connect process and goals orientation with friendly atmosphere and kindness. It’s visible each day in cooperation of team members, but also departments or hubs. On each level of company there is an understanding that together we can achieve much more. That’s great feeling to see employees learning and growing each day and to have opportunities also for myself, as in such dynamic environment I know I can also spread the wings.

— Agnieszka Gurzyńska – Accounting Supervisor GL


  • Location

  • Amenities

  • Continuing Education

  • Healthcare

  • Life and Disability Insurance

  • Room to Grow Your Career

  • Flexible Working Environment

  • Sports card - 50% paid card for your health

Job Description

AP Accounting Supervisor (6-month full-time employment contract)

As part of the Warsaw Accounting Operations hub, this role is within the Procure To Pay (P2P) function, with extensive offshore support. As a Team Leader in the Accounting Team you’ll be responsible for team support and development of approximately 9 people. You’ll be responsible for the AP area.


  • Be responsible and accountable for the day to day supervision for up to 9 colleagues and operational activities of the P2P function in the boundaries of the control environment, recognised business processes and tight reporting deadlines

  • Assist in establishing an efficient and effective  results focused service culture, delivering continuous process efficiency through strong change management and performance measurement

  • Be a champion for change activities that fall in line with global Accounting Operations vision

  • Continuously review and improve processes to achieve and maintain global standardization

  • Oversee and have accountability for day to day accounting processes and systems, ensuring accurate processing, recording, and reporting of financial information.  You will be responsible for the accuracy and maintenance of financial records

  • Delegate, review, approve, and on occasion, prepare requests for ad hoc analysis of various types of financial information utilizing operational and financial analytics as appropriate for the situation

  • Ensure all month-end, quarterly and yearly tasks deliverables are met and controlled

  • Ensure that developed KPIs and SLAs are continuously met and adhered to

  • Assist  with auditors and audit requirements and SOX testing


  • University degree in the field of finance, accounting, or economics or recognized Accounting qualification e.g. ACCA/CIMA.
  • Very good command of English – a must.
  • Knowledge of any additional language is not obligatory, but will be considered a strong plus.
  • 3 - 5 years’ experience within a large Shared Service environment or Finance management with proven operational improvement capabilities.
  • Experience of US GAAP – will be considered as an asset.
  • Working knowledge of ERP Accounting systems, e.g. Oracle Financials.


  • Among the many benefits are a competitive salary based on employment contract and genuine growth opportunities
  • You will have a chance to grow within the AP process where you will be supported from day one
  • We promote self-education and support you in learning new things – through online and real-life conferences with our mentors based in the UK/US and by giving you access to LinkedIn Learning platform. You can enjoy comfortable office space in a modern office next to Rondo Daszynskiego M2 station (office tour -click here) with free and tasty coffee / tea / chocolate and fruits in the kitchen
  • We can provide you with MultiSport sports card, MasterCard lunch card, family package medical coverage (with massages included!), life insurance, flexible working hours and we refund language courses at the office

Submit your resume in English and let’s discuss the role in details!

Apply Later

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  • One of America’s Best Employers – 3rd Year in a Row

    As 65,000 colleagues in more than 100 different countries, working in a wide variety of roles, we all share a clear non-negotiable drive to do meaningful work. Our people are the key to our success, and once again we’ve been named to Forbes magazine’s list of America’s Best Employers, as the highest-ranked firm in professional services.