Sr. Manager, Process & Platform- OneStream

mars· Mars Corporate
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About this role

Job Description:

The Sr. Manager, Process and Platform ensures the integrity and reliability of Mars Inc.’s OneStream system. This role will provide internal quality management for the design, implementation and maintenance of the OneStream system and period close process changes. You will lead a team of 3 OneStream administrators combining leadership as well as hands-on involvement.  This role requires building a strong network and work in close collaboration with IT, MGSF/SFO, Controllership and FP&A at the Corporate and GBU levels to ensure the needs of all stakeholders will be met. The job holder will work closely with our external consultants to ensure OneStream design will meet the needs of External and Internal reporting with the flexibility to change as our business Is constantly evolving. Driving good quality data is crucial for the success of our digital tools to help drive better business decisions

What are we looking for?

  • Bachelor’s degree in IT, Accounting, Finance, or related field.
  • 10+ years’ experience working with financial systems, at least 5 in the EPM space and 2 years of OneStream experience.
  • Experience developing and leading high-performance teams.
  • Strong understanding of US GAAP and consolidation accounting in a large multinational company.
  • Excellent verbal and written communication skills and the ability to explain technical concepts to non-technical people
  • Strong knowledge of internal controls/SOX
  • Experience in fast-paced environment, with the ability to lead multiple tasks and meet deadlines.

What will be your key responsibilities?

  • Development, maintain, and support the OneStream financial system.
  • Oversee governance of system changes, upgrades, security, and archival.
  • Lead a team of 3 OneStream administrators who support the periodic, quarterly, and annual financial close process as well as new unit integrations and training.
  • Business partner across the entire ecosystem in the design, implementation and delivery of corporate requirements and transparency of financial performance through integrated systems, processes and ultimately reporting.
  • Provide OneStream expertise on technology/process improvements and upgrades.
  • Provide critical support to the financial close process as it relates to OneStream.
  • Continual assessment and refinement of OneStream system to ensure alignment with changing business requirements.
  • Ad-hoc projects (related to OneStream)
  • Oversee data inflow and outflow in OneStream from various ERP/Planning/Allocation systems.

What can you expect from Mars?

  • Work with over 130,000 diverse and talented Associates, all guided by The Five Principles.
  • Join a purpose driven company, where we’re striving to build the world we want tomorrow, today.
  • Best-in-class learning and development support from day one, including access to our in-house Mars University.
  • An industry competitive salary and benefits package, including company bonus.

#LI-KR2

#LI-Hybrid

The base pay range for this position at commencement of employment is between the range listed below, however, base pay offered may vary depending on multiple individualized factors, including but not limited to job-related knowledge, skills, and experience. The total compensation package for this position will include variable pay, medical and dental benefits, participation in 401k plan, and paid time off benefits. Details of participation in these benefit plans will be provided if an applicant receives an offer of employment.

The pay range shown is applicable to all US locations listed within the job posting:USD 169,840.00 - USD 233,530.00

Frequently Asked Questions

What is the salary for the Sr. Manager, Process & Platform- OneStream role at mars?
The listed salary for this Sr. Manager, Process & Platform- OneStream position at mars is USD 170K–234K. This is an Full time role.
Where is the Sr. Manager, Process & Platform- OneStream position at mars located?
This Sr. Manager, Process & Platform- OneStream role at mars is based in USA-Illinois-Chicago, USA-New Jersey-Hackettstown, USA-Tennessee-Franklin. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Sr. Manager, Process & Platform- OneStream role at mars full-time or part-time?
This is listed as a Full time position. It is posted as a Sr. Manager, Process & Platform- OneStream role in the Mars Corporate department at mars.
Which team or department does the Sr. Manager, Process & Platform- OneStream at mars belong to?
This Sr. Manager, Process & Platform- OneStream position is part of the Mars Corporate department at mars. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Sr. Manager, Process & Platform- OneStream position at mars?
Click the "Apply Now" button on this page. You will be redirected to mars's official application portal hosted on workday where you can submit your application directly.
When was the Sr. Manager, Process & Platform- OneStream job at mars posted?
This Sr. Manager, Process & Platform- OneStream position at mars was posted on Sep 16, 2026. Apply as soon as possible — early applications are often reviewed first.
Sr. Manager, Process & Platform- OneStream
mars · 💰 USD 170K–234K
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