Senior Account Supervisor

Overview

Assembly Digital Commerce (ADC) is the E-commerce division of Assembly. We deliver exceptional media and digital commerce tools, services and solutions to accelerate and fuel brand performance in an online world. As ADC, we were built to accelerate and transform digital-first experiences connecting a brand to its consumers anywhere and everywhere they are. With a team of over 2,300 highly-skilled professionals, in 35 markets globally, ADC leverages in-house AI-driven data and technology in both commerce and media to to fuel growth that makes brands perform and drives measurable business outcomes.

As proud member of Stagwell, the challenger network built to Transform Marketing, we are committed to purposeful action, leading the way in social and environmental impact within the agency realm.

brandnewgalaxy.com

Your mission, if you choose to accept it, will be:

• Managing day-to-day relationships with key clients – planning activities, providing strategic advice, leading meetings and project status calls.

• Building long-term, partnership-based client relationships and identifying new areas for business growth.

• Planning and coordinating digital and e-commerce campaigns – developing timelines, supervising execution, monitoring progress and adapting to changes.

• Ensuring high-quality delivery, on-time execution, and alignment with the client’s business goals.

• Organizing work within the project team – assigning tasks, supporting skills development, and providing regular feedback.

• Supporting team motivation and performance, onboarding new team members, and participating in HR-related decisions (promotions, hiring needs).

• Preparing cost estimates and proposals, controlling project budgets, tracking performance and analyzing project profitability.

• Overseeing financial documentation and invoicing accuracy in cooperation with the finance team.

• Collaborating closely with strategic, creative, production and HR departments.

• Actively participating in internal trainings, meetings and initiatives that support team development and agency culture.

  
  

What you’ll need to succeed:

• At least 3–4 years of experience in a digital, advertising or e-commerce agency, including client and team management.

• Strong track record of leading complex projects, with ability to work under pressure and manage competing priorities.

• Excellent communication, strategic thinking and organizational skills.

• A self-starter mindset – you take ownership, act proactively, and seek solutions independently.

• Proficiency in English at C1 level – both in client-facing and internal communication.

Benefits:

• Hybrid work opportunity - 2 days per week from the office in Warsaw or Poznań

• Workation up to 60 days per calendar year on the EU territory

• Private medical insurance

• Access to Multisport card (paid fully by the Employee)

• Employee Referral Program

• Access to wellbeing platform

• Access to language learning platform

• 1 additional day of paid leave for volunteering purposes per calendar year

• Internal and external training opportunities

• No dress code

  
  

What makes this a great opportunity?

• Many possibilities to grow (being promoted within the team or switching to other teams)

• Working in e-commerce & digital for one of the biggest clients will give great job experiences and possibilities for self-development

• Working with the best experts in the e-commerce & digital in Europe (and possibly the world! ;))  

  
  

Our Recruitment Process

1. Recruiter phone screen

2. Online interview via MS Teams

3. Recruitment task

4. 2nd interview

Pursuant to Article 24(6) of the Law of 14 June 2024 on the Protection of Whistleblowers, we would like to inform you that Pathfinder23 sp. z o.o. has implemented an Internal Procedure for Reporting Violations of the Law and Follow-up.