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Mars UK • USA-Illinois-Chicago | USA-New Jersey-Hackettstown | United States of America

Indirect Tax Engine Specialist

Employment type:  Full time
Salary:  $101,120 – $139,040 per annum
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Job Description

Job Description:

The Indirect Tax Engine Specialist reports to the Global Tax Digital Transformation Lead supporting the testing, maintenance, and deployment of the tax engine within SAP S4 HANA. This role will help ensure accurate tax determination across multiple jurisdictions, partner with cross-functional teams, and help keep our systems aligned with evolving VAT, GST, and sales & use tax requirements.

The role is hands-on with system testing, troubleshooting, and configuration, while also collaborating with vendors on upgrades and enhancements. This is a great opportunity to combine technical expertise with tax knowledge, driving compliance and efficiency in a global ERP environment.

Key Responsibilities

  • Support configuration, testing, and maintenance of the indirect tax engine integrated with SAP S4 HANA.

  • Collaborate with IT, Finance, and Tax teams to ensure accurate tax determination across multiple jurisdictions.

  • Execute end-to-end testing cycles (unit, integration, regression, and UAT) for tax engine updates and S4 HANA deployments.

  • Monitor system performance and troubleshoot tax calculation issues, ensuring compliance with global indirect tax requirements.

  • Maintain documentation of tax engine configurations, test scripts, and issue resolution logs.

  • Partner with external vendors and consultants to implement tax engine patches, upgrades, and enhancements.

  • Ensure alignment of tax engine rules with evolving indirect tax legislation (VAT, GST, sales & use tax, etc.).

  • Provide ongoing support for business users, including training and issue resolution.

  • Participate in change management activities to ensure smooth deployment of new tax engine functionalities.

  • Contribute to continuous improvement initiatives by identifying opportunities to optimize tax processes and system efficiency.

What are we looking for

  • Bachelor's Degree

  • Strong knowledge of indirect tax concepts (VAT, GST, sales & use tax).

  • Hands-on experience with SAP S4 HANA and tax engine solutions (e.g., Vertex, Thomson Reuters ONESOURCE, Avalara).

  • Proven expertise in system testing methodologies and defect management.

  • Ability to translate tax requirements into system configurations and test cases.

  • Strong analytical, problem-solving, and troubleshooting skills.

  • Excellent communication skills to work effectively with cross-functional teams.

  • Detail-oriented with a focus on accuracy and compliance.

  • Experience in large-scale ERP deployments is a plus.

What can you expect from Mars?

  • Work with over 130,000 like-minded 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.

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 101,120.00 - USD 139,040.00

Company benefits

Open to part-time employees
Open to job sharing
Open to compressed hours
Sabbaticals
Enhanced maternity leave – 26 weeks at 90% pay
Enhanced paternity leave – 26 weeks at 90% pay
24 days annual leave + bank holidays
“Pawternity” leave
Pregnancy loss leave
Bank holiday swaps
Shared parental leave
Adoption leave
Family health insurance
Pregnancy support
Neo-natal leave
Faith rooms
Meditation space
Dog friendly office
Dog friendly co-working space
Annual bonus
Employee discounts
Cinema discounts
Referral bonus
Joining bonus
Cycle to work scheme
Electric Car Salary Sacrifice
Enhanced pension match/contribution
Theme park discounts
Lunch and learns
In house training
LinkedIn learning license
Studying sabbaticals
Open to part time work for some roles

Working at Mars UK

Company employees:

4,000 In the UK

Gender diversity (m:f):

57:43

Hiring in countries

Argentina

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Awards & Accreditations

1st – Family Friendly

1st – Family Friendly

Flexa awards 2025
2nd – Pet Friendly

2nd – Pet Friendly

Flexa awards 2025
Flexible

Flexible

Flexa awards 2025
Diversity and Inclusion

Diversity and Inclusion

Flexa awards 2025
Work-Life Balance

Work-Life Balance

Flexa awards 2025
Career Progression

Career Progression

Flexa awards 2025
Culture

Culture

Flexa awards 2025
Benefits

Benefits

Flexa awards 2025
1st – Large companies

1st – Large companies

Flexa100 2024
Consumer Goods

Consumer Goods

Industry awards 2023
3rd – Large companies

3rd – Large companies

Flexa100 2023
Retail & Ecommerce

Retail & Ecommerce

Industry awards 2022

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