Julius is available for hire
Hire JuliusJulius Cesar Castro
Verified Expert in Engineering
SAP Developer
Santa Rosa, Calabarzon, Philippines
Toptal member since May 28, 2026
Bio
Julius is a senior SAP data and analytics consultant with 16+ years across SAP BW, BW/4HANA, Datasphere, BDC, and SAC. He consistently operates at the solution architecture level across enterprise clients globally, owning estimation, design, workshops, and end-to-end delivery. When two principal consultants left mid-engagement, Julius maintained delivery continuity across three concurrent Datasphere projects. He's at his best when clients need both hands-on depth and independent ownership.
Portfolio
Dyflex Solutions
SAP Business Data Cloud, SAP Datasphere, SAP BW/4HANA...
Bluetree Solutions Pty Ltd
SAP Datasphere, SAP BW Bridge, SAP Analytics Cloud (SAC), SAP BW/4HANA...
Accenture
SAP BW/4HANA, SAP BW on HANA, SAP Business Warehouse (BW), SAP ECC, SAP S/4HANA...
Experience
- SAP - 16 years
- Data Warehousing - 16 years
- SAP HANA SQLScript - 9 years
- SAP BW/4HANA - 9 years
- SAP CDS Views - 8 years
- SAP Analytics Cloud (SAC) - 4 years
- SAP Datasphere - 3 years
- SAP Business Data Cloud - 1 year
Preferred Environment
SAP, SQL, SAP HANA, SAP BW/4HANA, SAP Datasphere, SAP Analytics Cloud (SAC), SAP Business Data Cloud, SAP HANA SQLScript, Data Warehousing, SAP S/4HANA
The most amazing...
...solution I've delivered—in just two weeks—is a procurement SAC report, navigating an early ANZ Datasphere rollout with no formal training and full ownership.
Work Experience
Senior Consultant – SAP Data Analytics
2025 - PRESENT
Dyflex Solutions
- Architected a greenfield SAP Business Data Cloud implementation, migrating legacy BODS logic into Datasphere and establishing the foundational data flow and integration architecture on the new platform.
- Drove an end-to-end solution strategy for an SAP HANA to BDC migration, assessing the as-is landscape, evaluating critical InfoProviders, and delivering the target-state architecture blueprint to senior stakeholders.
- Defined the clean-core strategy for a BW and S/4HANA RISE migration, driving a 20 – 30% DB footprint reduction through data tiering, ADSO redesign, and artifact rationalization.
- Analyzed and assessed CDS views for CDC enablement, identifying extraction-ready views, resolving annotation gaps, and ensuring reliable real-time replication into Datasphere.
- Configured Delta Share and Premium Outbound integration to stream data from Datasphere into Databricks, enabling cross-platform analytics on a unified governed data layer.
- Redesigned enterprise planning architecture by transitioning BW/BPC models into CDS-based, real-time structures aligned with SAP's modern analytics strategy.
- Acted as the primary technology advisor on Datasphere and BDC adoption, guiding data-provider strategy, semantic modeling, and long-term platform modernization.
Technologies: SAP Business Data Cloud, SAP Datasphere, SAP BW/4HANA, SAP Analytics Cloud (SAC), SAP S/4HANA, SAP S/4HANA Cloud, SAP CDS Views, SAP BusinessObjects Data Service (BODS), Databricks, SAP HANA, ABAP Core Data Services, Architecture, Data Warehousing, SQL, SAP HANA SQLScript, Data Engineering, SAP Architecture, SAP Migration, SAP
Senior Consultant – SAP Data Analytics
2022 - 2025
Bluetree Solutions Pty Ltd
- Delivered one of the earliest SAP Datasphere implementations in the ANZ region, ramping up independently without formal training and producing a procurement SAC report from scratch in approximately two weeks.
- Maintained delivery continuity across three concurrent Datasphere projects after two principal consultants departed mid-engagement, stepping into full architectural and client-facing ownership.
- Architected multi-industry Datasphere landscapes across retail, utilities, energy, manufacturing, mining, and beverages, defining multi-layer data models, integration patterns, and governance structures.
- Drove measurable performance gains, including up to 25% faster processing and 50% reduction in manual activities through architectural simplification, SQL optimization, and automation.
- Assessed CDC readiness for CDS views used in Datasphere replication flows, differentiating viable from non-viable extraction paths and enabling reliable real-time data integration.
- Supported presales across the Philippines, Singapore, and Australia through RFPs, solution demos, estimates, and stakeholder workshops; presented at SAP sessions in Taguig, Singapore, and SAP AUG.
Technologies: SAP Datasphere, SAP BW Bridge, SAP Analytics Cloud (SAC), SAP BW/4HANA, SAP S/4HANA, SAP S/4HANA Cloud, ABAP Core Data Services, Data Warehousing, SAP Architecture, SAP HANA, SAP HANA SQLScript, SQL, Python, SAP BW on HANA, Data Engineering, SAP
Associate Manager – SAP Data and Analytics
2018 - 2022
Accenture
- Directed the design of enterprise BW on HANA artifacts such as ADSO, CompositeProviders, HANA views, and SQL calculation views for a global F&B organization across supply chain, finance, and commercial analytics.
- Owned KPI design and analytics blueprinting for a global manufacturing client, overseeing BW on HANA delivery through cross-functional Agile teams.
- Engineered AMDP-based SQLScript transformations, converting classical BW logic into HANA-optimized processing layers for long-term performance and maintainability.
- Architected a greenfield BW/4HANA implementation for a global software analytics client, establishing foundational data architecture and producing high-level design documentation used for future scaling.
- Served as a capability lead for SAP BW/4HANA, building upskilling roadmaps, redefining competency assessments, and mentoring Manila-based consultants.
Technologies: SAP BW/4HANA, SAP BW on HANA, SAP Business Warehouse (BW), SAP ECC, SAP S/4HANA, SAP HANA, SAP CDS Views, SAP Architecture, SAP ABAP, SAP Analytics Cloud (SAC), ABAP Managed Database Procedures (AMDP), SAP HANA SQLScript, SQL, Agile, SAP, Data Warehousing
SAP BW/4HANA Lead – Architecture, Data Modeling, and BI Delivery
2016 - 2018
Zuellig Pharma Asia Pacific Ltd.
- Guided an eight-member BI support team in an Agile environment, overseeing development and optimization of HANA objects, including ADSOs, Open ODS, CompositeProviders, and HANA views.
- Managed incident resolution, data load optimization, and transition changes to maintain SLA compliance and platform stability across reporting operations.
- Delivered BI solutions across Lumira, Web Intelligence, BEx Analyzer, and Tableau, collaborating with cross-functional teams to align reporting outputs with business requirements.
- Drove continuous process improvements in data warehousing and reporting, combining proactive problem-solving with hands-on technical leadership.
Technologies: SAP BW on HANA, SAP BusinessObjects Data Service (BODS), SAP Webi Reports, SAP Lumira, Web Intelligence, SAP BusinessObjects (BO), SAP Business Warehouse (BW), Application Management Services (AMS), SAP HANA, SAP HANA SQLScript, SAP ABAP, SAP, Data Warehousing
Associate Software Engineer to Associate Manager – SAP BW
2009 - 2016
Accenture
- Served as BW SME lead for a global consumer goods client, directing a cross-regional team of 4 – 8 across OTC, supply chain, and finance/CO analytics; managed design validation, escalation resolution, and stakeholder coordination.
- Led an 8-member virtual team as a BW month-end manager for the Europe office, ensuring timely financial close, incident resolution, and post-mortem reviews to mitigate recurring risks.
- Acted as the primary technical contact for the Americas BW landscape, driving performance improvements, managing critical escalations, and running upskilling sessions to strengthen team capability.
- Delivered full-cycle CRM-to-BW integrations for a home appliances client using SAP BAdI/ABAP extractor enhancements and BW 7.4, translating CRM requirements into technical designs under the waterfall methodology.
- Advanced from individual contributor to leadership roles through consistent growth in technical depth, project delivery, and cross-functional stakeholder management.
Technologies: SAP BW on HANA, SAP Business Warehouse (BW), SAP ABAP, SAP Business Add-ins (BAdi), SAP ECC, SAP HANA, SAP Query, SAP, Data Warehousing
Experience
End-to-end SAP Datasphere Implementation
I led full lifecycle SAP Datasphere implementations across multiple industries, establishing end-to-end architecture that covered replication strategy, semantic layer design, SQL and graphical view modeling, Data Flow orchestration, and Task Chain automation. I defined multi-layer data models and integration patterns aligned with enterprise governance standards, enabling scalable, cloud-ready analytics. I also drove solution planning workshops with business owners and enterprise architects, ensuring consistent alignment between Datasphere, BW/4HANA, and S/4HANA across distributed development teams.
SAP BW to Datasphere and BDC Migration
I spearheaded migration programs transitioning legacy SAP BW landscapes to SAP Datasphere and SAP Business Data Cloud, assessing as-is data landscapes, evaluating critical InfoProviders, and identifying high-value data domains for target-state architecture design. I defined clean-core strategies, rationalized redundant BW objects, and produced architectural blueprints presented to senior client stakeholders. I also migrated legacy BODS transformation logic into Datasphere, preserving business rules while modernizing the data integration layer.
CDC-enabled CDS View Assessment and Replication
I assessed CDS views for CDC readiness, analyzing extraction annotations, identifying annotation gaps, and differentiating views suitable for automatic CDC from those requiring mapping-based approaches. I enabled reliable real-time replication flows into SAP Datasphere by resolving extraction blockers and redesigning non-viable views where necessary. This work ensured that replication pipelines were architecturally sound before go-live, reducing downstream reconciliation issues and supporting high-frequency data availability for enterprise reporting.
SAP Datasphere to Databricks Integration via Delta Share
I configured Delta Share and Premium Outbound integration between SAP Datasphere and Databricks, streaming governed SAP data into the Databricks environment for cross-platform analytics. I designed the data flow architecture to ensure semantic consistency between SAP and Databricks layers, enabling unified analytics across SAP transactional data and external datasets. I also validated and reconciled outputs across both platforms to ensure data completeness and accuracy for downstream consumers.
Education
2005 - 2009
Bachelor's Degree in Information Technology
University of Santo Tomas - Manila, Philippines
Skills
Tools
SAP S/4HANA
Storage
SAP BW/4HANA, SAP HANA SQLScript, SAP S/4HANA Cloud
Languages
SQL, Python
Platforms
SAP HANA, Databricks, SAP ABAP
Paradigms
ABAP Managed Database Procedures (AMDP), Agile
Other
SAP, SAP Datasphere, SAP Analytics Cloud (SAC), SAP Business Data Cloud, Data Warehousing, SAP CDS Views, Architecture, SAP Architecture, SAP BW on HANA, SAP Business Warehouse (BW), Information Technology, SAP BusinessObjects Data Service (BODS), Data Engineering, SAP Migration, SAP BW Bridge, SAP ECC, SAP Webi Reports, SAP Lumira, Web Intelligence, SAP BusinessObjects (BO), Application Management Services (AMS), SAP Business Add-ins (BAdi), SAP Query, ABAP Core Data Services, SAP Landscape Transformation Replication Server (SAP SLT), SAP HANA Data Lake Files (HDLF)
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