Account Manager; AdTech

Account Manager (AdTech)

Location: Warsaw, Masovian Voivodeship, pl, Remote

Are you ready to move from operational delivery into strategic partnership development? We are looking for an Account Manager with a strong Project Management background who is passionate about building long-term Customer relationships and driving business growth.

You will join Stellar, Sigma Software’s dedicated AdTech business unit, where over 300 experts collaborate with global companies and startups to create innovative advertising technology solutions. In this role, you will focus on strategic account development, Customer engagement, and business expansion while working closely with delivery teams and business stakeholders.

We at Sigma Software offer the opportunity to work with international Customers, influence business growth, and become part of a strong professional community with deep AdTech expertise. Remote or hybrid cooperation format can be discussed depending on your location.

• Build and maintain long-term, trust-based relationships with Customers
• Act as the primary point of contact for strategic account discussions
• Identify and drive growth opportunities within existing accounts
• Collaborate with delivery teams on upsell and cross-sell initiatives
• Monitor Customer satisfaction and proactively mitigate risks
• Align Customer expectations with operational and delivery capabilities
• Translate business needs into structured internal action plans
• Partner with Project Managers and delivery stakeholders to ensure transparency and predictability
• Support contract extensions, commercial negotiations, and account planning activities
• Contribute to long-term account development strategies
• Facilitate effective communication between Customers and internal teams
• Drive continuous improvement in Customer engagement processes

• 5+ years of experience in Project Management and/or Program Management
• Proven experience in Account Management within a service-based IT company
• Strong understanding of operational processes in European and US-based corporations
• Successful track record of developing and scaling Customer accounts
• Hands-on experience creating, negotiating, and managing delivery contracts
• Strong commercial mindset and ability to identify business opportunities
• Excellent communication, stakeholder management, and negotiation skills
• Ability to build strategic long-term partnerships with Customers
• Experience balancing Customer expectations with operational capabilities
• Structured, analytical, and solution-oriented mindset
• Upper-Intermediate or higher level of English

WILL BE A PLUS

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

PERSONAL PROFILE

• Relationship-oriented and Customer-focused mindset
• Strong ownership and accountability
• Strategic and business-oriented thinking
• Proactive and growth-driven approach
• Strong collaboration and conflict-resolution skills
• Ability to work effectively in a dynamic environment