Business Controller Assistant

Wärtsilä is a world leader in marine technology and leading the industry's transformation towards a decarbonised and sustainable future. With the world's widest portfolio and service network, we – Wärtsilians - deliver efficient, safe and sustainable integrated products and solutions to enhance the business of our customers. The opportunities presented through digitalisation and new technologies are offering a new era of shipping. Did you know that shipping is the world's most efficient mode of transportation and that 88% of the world's trade is carried by sea?

We want to change the course towards an interconnected and cleaner maritime future and are constantly on the lookout for future-oriented talent to join our team and to work towards enabling sustainable societies through innovation in technology and services - together. Are you ready to jump onboard?

We are always on the lookout for a talent with a growth mindset – are you the one?

We are seeking
a Business Controller Assistant
to join our Voyage Services Business Control team on a 12-month fixed-term basis. This role is ideal for someone in the early stages of their FP&A or accounting career who is eager to develop their skills in a dynamic, international finance environment.

The preferred location for this position is Helsinki, Finland but also Fareham, UK and Belgrade, Serbia are negotiable. We offer a possibility to hybrid remote work.

Your role and responsibilities:
As a Business Controller Assistant you will play an integral role in supporting the month-end close, budgeting and forecasting cycles, and billing processes. The position involves working closely with Business Controllers, broader finance teams, and key business stakeholders across entities and systems.

• Month-End Process Support:

• Prepare month-end journals, including labour absorption entries

• Perform cost allocation tasks across cost centres and entities
• Create and monitor internal billing requests across multiple ERP systems
• Reconcile data across systems and upload to MDS
• Ensure data accuracy and consistency for financial reporting

• Billing:

• Create Service Agreement invoices in SAP

• Coordinate with internal teams to validate billing data

• Reporting:

• Run regular financial and operational reports

• Update monthly reporting decks

• Budgeting and long-term planning:

• Prepare excel templates

• Support Business Controllers in budget data collection, consolidation, and analysis

Requirements for the position:

• Proficient in Excel and PowerPoint; SAP experience is a strong advantage
• Strong analytical skills and attention to detail
• Effective communicator in English (written and verbal)
• Comfortable working in a matrixed, fast-paced environment with tight deadlines
• Eagerness to learn and adapt as business needs evolve
• Strong ability to work independently and collaboratively within a team
• High level of comfort with large datasets and transactional accounting data

Qualifications/to be able to succeed in the position we expect you to have:

• Bachelor's or Master's degree in Finance, Accounting, or a related field
• Minimum 3 years of experience in FP&A, accounting, or financial operations

Why you and us?

You are valued – as your true self. At Wärtsilä YOU matter. We value diversity and are committed in supporting inclusive work community.

Your growth is supported. We believe in continuous learning & teamwork. Wärtsilian community has your back when it comes to development opportunities – so you can develop beyond your potential.

You get to make a difference. Innovation and sustainability are important for us. Every day, we - Wärtsilians - put our hearts and minds into enabling sustainable societies through innovation in technology and services into reality.

Contact & next steps:

Please submit your application before the application deadline of

through our Careers portal. Applications through email will not be considered. After submitting your application, you will receive a confirmation email.

In case of any questions regarding the position, reach out to:

Svetlana Gonostareva,

Head of Business Control,

Last application date: 14/09/2025

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.

Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country. All new Wärtsilä employees in Finland will attend occupational health checks, including drug tests/screenings where applicable. When a person is located outside of Finland, the country legislation is followed.

This is Wärtsilä
Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on