1. Expert Metadata & Role Identification
| Full Name | Cyplian Murimi |
| Proposed RFP Position | Data Engineer & Database Specialist (Key Expert 3) |
| Arybit Role | Chief Database Engineer |
| Identifier | ARY-DB012 |
| Location | Nairobi, Kenya |
| Evidence Status | Verified (Database Architecture & Data Pipeline Engineering) |
2. Professional Profile
Cyplian Murimi is a senior database architect and data platform engineer specializing in relational databases, spatial data schemas (PostGIS), automated ETL pipeline design, time-series data aggregation, and database performance tuning. At Arybit Technologies, he leads database infrastructure, query optimization, data warehousing, and secure data modeling.
For the Ghana Critical Minerals Market Intelligence System (GCM-MIS), Cyplian is proposed as the Data Engineer & Database Specialist, responsible for designing the core PostgreSQL/PostGIS database schema, implementing automated data ingestion pipelines from Ghanaian institutional sources, and ensuring high-performance data querying.
3. Core Competencies & Technical Capabilities
- Database Systems: PostgreSQL, PostGIS spatial database engine, TimescaleDB for time-series pricing.
- Data Ingestion & ETL: Python data pipelines, Apache Airflow orchestration, automated schema validation.
- Data Security & Auditing: Row-level security (RLS), encrypted database storage, tamper-evident audit logging.
- Performance & Optimization: Indexing strategies (B-Tree, GiST, GIN), query plan analysis, partitioning.
4. Employment History & Arybit Contributions
Chief Database Engineer — Arybit Technologies (2023 – Present)
- Architected core PostgreSQL relational and vector databases supporting the Arybit Intelligence ecosystem.
- Engineered automated data ingestion and validation pipelines processing environmental, geospatial, and price datasets.
- Implemented spatial indexing and concession boundary querying for the GeoAlterSense Earth Observation engine.
Note: Pre-Arybit employment history and exact dates are verified on signed personal record.
5. Language Skills & Availability Statement
Languages: English (Fluent / Professional), Swahili (Native).
Availability: Cyplian Murimi confirms 100% availability to serve as Data Engineer & Database Specialist for the full 28-week implementation timeline.
