Account Manager (AdTech)

Location: Remote from Poland; Warsaw, Masovian Voivodeship, Poland. Remote or hybrid cooperation may be discussed depending on location.

Company

Join Stellar, Sigma Software’s dedicated AdTech business unit, where more than 300 experts deliver advertising technology solutions for global companies and startups.

What you will do

• Build and maintain long-term, trust-based customer relationships and act as the primary contact for strategic account discussions.
• Identify and drive growth opportunities, including upsell, cross-sell, contract extensions, commercial negotiations, and account planning.
• Monitor customer satisfaction, mitigate risks, and align customer expectations with operational and delivery capabilities.
• Translate business needs into structured internal action plans and coordinate with Project Managers, delivery teams, and stakeholders.
• Contribute to long-term account development strategies and improve customer engagement processes.

Requirements

• 5+ years of experience in Project Management and/or Program Management.
• Proven Account Management experience in a service-based IT company.
• Strong understanding of operational processes in European and US-based corporations.
• Successful experience developing and scaling customer accounts.
• Hands-on experience creating, negotiating, and managing delivery contracts.
• Strong commercial mindset with the ability to identify business opportunities.
• Excellent communication, stakeholder management, and negotiation skills.
• Ability to build strategic long-term customer partnerships and balance customer expectations with operational capabilities.
• Structured, analytical, solution-oriented mindset; relationship-focused, accountable, proactive, and effective in collaboration and conflict resolution.
• Upper-Intermediate or higher English.

Nice to have

• AdTech experience.
• Experience working with distributed international teams and executive-level stakeholders.
• Understanding of the software delivery lifecycle and engineering processes.
• Experience participating in pre-sales or business development initiatives.

Culture & Benefits

• Full-time role within an international professional community focused on AdTech.
• Remote or hybrid cooperation format may be discussed depending on location.
• Opportunity to work with international customers and contribute to business growth.
• Dynamic environment emphasizing ownership, strategic thinking, collaboration, and continuous improvement.