Frans Bol

Contracted as the sole developer on a greenfield backend for a multi-tenant CRM system. Took full technical ownership, making architectural decisions and defining delivery timelines while navigating evolving requirements. Achieved the first end-to-end data pipeline within six weeks and delivered full project scope within 20 weeks, processing data from dozens of sources and over a million records. Built configurable, version-controlled YAML-driven architecture with multi-tenancy and idempotent workflows, enabling reliable error recovery. Established development infrastructure and provided technical guidance shaping key business decisions; deployed to production with strong customer reception.

Contract to a small, high-performing team to rapidly develop a greenfield product targeting product-market fit. Balanced speed with quality, drove feature iterations to attract and retain customers. Designed and implemented a customer alert system delivering an end-to-end solution to increase product engagement and user retention.

Led development of a greenfield data ingestion engine that fetches data from hundreds of sources, pre-transforms it, and ingests it into the data warehouse. Achieved fivefold increases in data capacity and 5x faster end-to-end data acquisition. Migrated bespoke legacy data pipelines to the new platform, modernised automated testing capabilities, and implemented a continuous deployment strategy. Mentored team members as part of a geo-distributed team.