SUNOTEC’s HR transformation for a renewable future

Solution

A two‑wave, best‑practice rollout of SAP SuccessFactors Employee Central

SUNOTEC’s transformation journey was shaped by close partnership with Atos and a shared commitment to excellence. The project unfolded in two phases, with a first go‑live after eight months and a second wave six months after that, ultimately covering around 2,600 users and setting the stage for further growth.

Leveraging the Atos Golden Client Template and accelerators to reduce implementation time, minimize customization, and ensure alignment with SAP best practices SUNOTEC was able to standardize HR lifecycle processes—hiring, internal moves, and terminations—across all legal entities. Position management and job architecture were established as foundational elements, ensuring clarity and consistency for both HR and business leaders.

Seamless integration with SAP S/4HANA and payroll systems enabled secure, automated data flows between HR and Finance, eliminating manual handoffs and reducing errors. Localization for Bulgaria and Germany addressed country‑specific requirements, while structured data migration and rigorous user acceptance testing protected data quality and system reliability. Throughout the project, governance and milestone tracking kept delivery on course, and proactive change management supported user adoption.

A strong focus on employee and manager self‑service—including mobile access—empowered SUNOTEC’s workforce to manage HR tasks independently, boosting engagement and efficiency. Knowledge transfer and training ensured SUNOTEC’s HR and IT teams could confidently operate and maintain the new platform, reducing reliance on external support and building lasting capability for future innovation.

Business Benefits

Tangible outcomes: One source of truth, lower total cost of ownership, faster decisions

SUNOTEC now operates from a single source of truth for HR master data across seven entities, improving accuracy, transparency, and audit readiness. Standardized workflows and automation have reduced manual effort, shortened cycle times for organizational changes and reporting, and freed HR to focus on strategic priorities. Alignment to SAP best practices lowers total cost of ownership and simplifies future upgrades, while integration with S/4HANA and payroll streamlines cross functional processes. Mobile self services lift user satisfaction and speed execution in the field. With strong governance and internal capability building, SUNOTEC has a scalable, future ready HR platform that supports international growth.

• Unified data and reporting: Consistent headcount, position, and organizational insights across countries
• Efficiency gains: Less manual work; faster approvals and changes
• Compliance and control: GDPR aligned processes and auditable records
• Future ready foundation: Easier upgrades; proven scalability

Why Atos

As a global SAP Platinum Partner, Atos brings certified SuccessFactors consultants who blend technical depth with real‑world HR experience to elevate HR into a strategic function. Our accelerators, localization know‑how, and S/4HANA integration expertise reduce risk, speed time to value, and deliver a secure, future‑ready Core HR platform at global scale.