S2P Sub Process Lead e-Invoicing (f/m/x)

CompanyMars

LocationSlough, England, United Kingdom

Posted At1/21/2026

UK Visa Sponsorship Analytics

Analytics are greyed out due to low classification confidence (46.0%).

Occupation Type

Book-keepers, payroll managers and wages clerks

Occupation Code Skill LevelMedium Skilled

Sponsorship Salary Threshold

£41,700 (£21.38 per hour)

Standard minimum applies

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Description

Job Description

S2P Sub Process Lead e-Invoicing (f/m/x)

at MARS

Hybrid working

Location: Warsaw (other possible locations: Poznan, UK, Mexico, Brazil)

Join Mars as a S2P Sub Process Lead for e-Invoicing within our Digital Core program. In this role, you will drive the development of global design for the e-Invoicing domain, ensuring compliance with government mandates and increases e-Invoice adoption and efficiency. You will collaborate with cross-functional teams to deliver a future-ready, end-to-end process design whilst supporting successful segment deployments.

What will be your key responsibilities?

Utilize Mars knowledge and networks to identify key business scenarios across the e-Invoice landscape.
Lead the development and deep dive sessions for the e-Invoice landscape process design.
Participate in global design workshops and previews for e-Invoicing.
Collect, analyze, and present information to enable key design decisions.
Lead and support change impact assessments and provide input for training needs analysis.

Own e-Invoicing documentation to ensure alignment with design and quality.

Identify test cases for e-Invoicing.

Support the data team to ensure data accuracy and relevance.

Support segment deployments of e-Invoicing.

Build country understanding of the e-Invoicing global template to validate fit and identify gaps.

Use country validation output to refine design and process documentation.

Work with the PMO to develop, deliver, and manage activity plans to ensure delivery to time, quality, and budget.

Propose and instigate corrective actions as needed.

Identify and build a network of e-Invoicing experts within Mars.

Ensure alignment with BAU e-Invoice processes and teams.

Support the E2E Transformation Lead GPO and PMO in leading multi-functional teams.

What are we looking for?

Bachelor’s or master’s degree in any discipline preferred (preferably Finance, Procurement, Supply Chain).
Minimum 5 years’+ domain experience in a CPG or similar company.
Lean Six Sigma certification is a plus.
Detailed understanding of e-Invoice tools, standards, and processes.

Knowledge of e-Invoice government mandates and their impact on I2P processes.

Experience with ERP systems (ideally SAP).

Prior experience in leading transformational programs or enterprise-wide change initiatives.

Good exposure to P2P and connected technologies (e.g., Ariba, SAP, OneSource, VIM).

Fluent in English (excellent written and oral skills).

Highly collaborative with executive presence and influencing skills.

Digital savvy and exposure to RPA, automation, and AI.

What can you expect from us?

Contract of employment.
Attractive financial conditions with Business Bonus and Christmas Bonus.
We will also look after your safety and well-being by offering you rich benefits package including life insurance, private medical care, Employee Assistance Program fully covered by Mars, MultiBenefit Program.
Subsidized meals.
Extra savings scheme to support You in long perspective.
Support in career building through personalized development plan.
On-line & On-site shop with attractive discounts on our products that Your family and friend are going to love.
Possibility to participate in volunteering initiatives during working hours.
A modern and pet friendly office in the Warsaw City Centre.

Apply now and upload you profile in English.

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