We at Posti take care of a smoother flow of everyday life for you, companies and society while building a more sustainable future for us all with a diverse pool of professionals from mail deliverers and warehouse workers to artificial intelligence experts. As a large company, the range of possibilities we offer is huge – also internationally. Overall, we have 15,000 experts across the Nordics and Baltics. Join us to create the future Posti! 

Join our Accounts Receivable Team - We are looking for Accounts Receivable Summer Trainee!

We are looking for a motivated and result-driven Summer Trainee to join our Accounts Receivable team. You’ll support our finance team in Estonia and get to cooperate with both internal and external stakeholders during the summer vacation period. This is an excellent opportunity to take the next step in your career and gain hands-on experience in the field of finance and accounting. The position is in our Helsinki headquarters. The work starts in early May and lasts until mid-August.

Main Responsibilities:

• Recording incoming payments to clear invoices and reconcile customer ledgers
• Contacting clients to resolve any payment related matter
• Handling customer queries in a timely and professional manner
• Ensure timely collection and communication with external collection agency
• Handling insolvency cases
• Communicating with internal stakeholders beyond team borders

To succeed in this position, we hope that you have:

• Education in finance & accounting
• Previous experience in similar role(s)
• Understanding the Lead to Cash process
• Proficiency in MS Office tools (Excel required)
• Knowledge of S/4HANA or other ERP systems
• Readiness to adapt to working with multiple systems independently and deliver within deadlines
• Fluency both in written and spoken Finnish and English (professional working proficiency)

As part of the recruitment process, we will conduct a credit check for the selected candidate.

Why should you join us?

With us, you will be part of a company whose operations impact the daily lives of millions of people. We have grown into an international logistics expert that employs around 15,000 people in the Nordic and Baltic countries. We are constantly developing new technology, and we are pioneers in our industry in building a more sustainable future: we have set the ambitious objective of operating fossil-free by 2030 and be on net-zero what comes to our emissions by 2040.

We promote a diverse and inclusive work environment. All our managers undergo Caring Leader training, and together, we are building a caring work culture. Our dedication to supporting mental well-being at work has also been acknowledged with the Mental Health Friendly Workplace®label in 2026. With us, you will also have an excellent opportunity to develop your career and skills through diverse tasks.

As part of our employee benefits, you will get to participate in events offered by the Posti Group’s occupational well-being foundation, such as wellness courses, concerts, sports events and amusement park days. We work according to our hybrid model, both remotely and in our office in Helsinki city center.

For more information about this position, please contact our Senior Manager, CM & AR Hanne Rikkilä ([email protected])

Is this your next career move? Please leave your application by 15.3.2026 via Posti’s recruitment system. The position will be filled as soon as a suitable candidate is found.

We value diversity, equity, and inclusion in our work community. We encourage applicants of different ages and genders, as well as persons belonging to linguistic, cultural, or other minorities to apply.

We hope to hear from you soon!

Our common values – reliable, respectful, progressive - guide everything we do. Read more!