Strength. Care. Growth

A1 Competence Delivery Center is a vital component of A1’s telecommunications business. Acting as an expertise hub, CDC is dedicated to delivering a full range of high-quality IT, network, financial and other services to support A1’s operations across all OpCos, independent of location.

Using the power of being OneGroup and leveraging synergies, CDC enables transparency of resources, key skills and knowledge expansion and personal career growth opportunities’ enhancement, paired with job stability.

You will know we are the right place for you, if you are driven by:

• Opportunities to learn and build your career.
• Meaningful work in a stable and fast-paced company.
• Diversity of people, projects, and platforms.
• A supportive, fun, and inspiring place to work.

Role Overview:

Lead and govern the end-to-end Workday architecture, driving solution design, integrations, and system optimization while aligning with business strategy, ensuring scalability, compliance, and high-quality delivery across a complex enterprise environment.

Role insights:

• Own the overall Workday solution architecture for a large telecommunications organization.
• Act as the design authority across Workday modules, ensuring alignment with business strategy, enterprise architecture, and long-term scalability.
• Define and govern Workday architecture standards across HCM, Compensation, Absence, Recruiting, Talent and Performance, and integrations.
• Lead solution design for new Workday initiatives, enhancements, and deployments.
• Partner with HR, Security, and Enterprise Architecture to translate business needs into optimal Workday designs.
• Ensure Workday configurations and extensions align with best practices and minimize technical debt.
• Provide architectural oversight for integrations, reporting, security, and data flows.
• Lead Workday release impact assessments and guide remediation strategy.
• Review vendor and system integrator designs; challenge assumptions and ensure quality.
• Ensure compliance with data privacy, SOX, and GDPR requirements.
• Act as a senior escalation point for complex Workday design or production issues.

What makes you unique:

• Proven experience as a Workday Architect or Senior Workday Consultant in large enterprise environments.
• Strong functional understanding of HCM core processes (hire, job change, termination, compensation, absence).
• Experience designing Workday for global, regulated organizations.
• Ability to balance strategic architecture with pragmatic delivery.
• Excellent stakeholder engagement and decision-making skills.

Nice to Have 

• Workday certifications (Workday Integrations, Workday Security, Workday Studio).

Our gratitude for the job done will be eternal, but we’ll also offer you:

•  Valuable experience in one of the fastest-growing and most innovative industries.
•  Challenging assignments with strong opportunities for personal and professional growth in a multinational environment.
•  Hybrid working model supporting a healthy work-life balance.
•  Thousands of online and in-person Learning opportunities for you to grow.
•  Modern, open, and friendly work environment that fosters continuous learning and the development of both technical and soft skills.
•  Special employee tariffs and a wide range of attractive employee benefits.

If you have any questions,  please do not hesitate to contact Simeon Kostov.