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Agatha Felisitas Santoso
Junior Software Engineer specializing in full-stack web and data systems
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About
Series C (Sigma Computing) full-stack engineer/intern who shipped production features across React/TypeScript and GraphQL, including a Recents/workbook activity reliability improvement that handled unsaved “exploration” events via deterministic backend updates. Emphasizes production quality through Jest/Cypress coverage and feature-flagged staged rollouts, and is recognized for UX-focused improvements (fast, accurate filtering at scale) and proactive cross-functional ownership.
Experience
Education
Key Strengths
- Shipped end-to-end full-stack features (React/TypeScript + GraphQL backend) and owned post-launch reliability
- Improved data consistency for “Recents” activity by adding deterministic server-side updates for unsaved/exploration events
- Strong testing discipline (Jest + Cypress) to catch regressions and cover edge cases; iterated implementation based on tests
- Risk-managed production releases using feature flags and staged rollout
- Performance/usability improvements for dashboard filtering; maintained UI consistency with backend-filtered results at scale (hundreds of files/workbooks)
- Pragmatic query efficiency mindset (ensuring lookups use indexed keys like workbook_id)
- Proactive product ownership—identified and fixed unrelated UI inconsistency via design collaboration
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