Callstack is looking for an Account Growth Manager to act as a bridge between business value and technical innovation. You will be responsible for maintaining strong client relationships, ensuring successful service delivery, and driving revenue growth through upselling, cross-selling, and strategic account development with TOP Silicon Valley and Fortune 500 companies in the USA.
What You'll Do
- Take overall responsibility for business development on selected accounts.
- Drive upsells, account expansions, and end-to-end renewals to ensure consistent revenue growth.
- Build and execute mid- and long-term key account plans, including stakeholder mapping and expanding into new client divisions.
- Develop account strategies and roadmaps to strengthen long-term partnerships.
- Lead regular 1:1s with key stakeholders and plan onsite visits to strengthen partnerships.
- Build and maintain long-term relationships with key client stakeholders.
- Act as a bridge between clients and R&D, sharing technology trends and innovation insights to position us as a strategic partner.
- Monitor client financial situation monthly, map potential risks to current and future revenue, and execute churn prevention measures.
- Manage sales forecasting, account reporting, legal contracts, and the acquisition of case study approvals.
- Connect various client initiatives by providing cross-project context, market intelligence, and industry-level positioning.
- Drive referrals and stakeholder introductions to expand account footprint organically.
What We're Looking For
- At least 5+ years of proven success in B2B enterprise services, preferably within the IT or software development sector.
- Ability to collaborate closely with developers and translate complex technical roadmaps into business value.
- Strong track record in closing upsell & cross sell deals, negotiating contracts, and managing a healthy sales pipeline.
- Near-native command of English (min. C1) with the ability to influence C-level stakeholders.
- Proven ability to move beyond 'delivery vendor' status to become a trusted business advisor.
- Strong attention to detail regarding financial monitoring, reporting, and KPI achievement.
- A self-driven, entrepreneurial approach to problem-solving and client relationship building.
- A belief that 'Impossible is nothing'.
Benefits & Compensation
- Compensation: 16 800 - 23 000 PLN net + VAT (B2B) / 14 000 - 19 000 PLN gross (UoP)
- 24 paid days off & 30 days paid sick leave for B2B contractors
- Fully-covered life insurance
- Private healthcare for you and your family
- Free access to mental health platform - Helping Hand
- Multisport Card or monthly allowance for other sports activities
- Individual Wellbeing & Development Budget
- Monthly lunch allowance
- Accounting costs refund for B2B contractors
- Cool office in Wrocław city center
- Magnificent team events and activities
- Company-wide workation and team building workshops
- Top-notch hardware - Apple devices
- Possibility to participate in React Universe Conf
Work Mode
This role offers a hybrid work arrangement. You can work remotely or from our office in Wrocław, Dolnośląskie, Poland, with flexible working hours.
We don’t follow best practices, we set them! We truly believe that you can get the best out of people when you give them a chance to participate and develop. At Callstack you are the one to decide in which area you want to grow, you’ll have an individual self-development budget to empower your competencies and gain new skills. Our goal is to allow every employee to speak up and introduce their ideas to build the future together.





