Temmy T.

WaterStep Flutter Developer (Flutter + Firebase + Offline Sync)

WaterStep • Full-time

Sep 2025 - Present • 1 yr 2 mos

At Waterstep, I worked as a Flutter developer focused on building and improving a real-world field inspection platform used by teams across pump operations and water quality workflows. I contributed to both inspector-facing and admin-facing product areas, with major work around data quality, sync reliability, and operational visibility. On the inspector side, I improved pump detail and inspection journey screens by surfacing critical field data clearly, including pump identifiers, GPS coordinates, GPS accuracy/altitude/provider metadata, and water-depth/well-history values captured during inspections. On the backend/sync side, I strengthened Firestore-to-local database mapping and local-to-cloud sync contracts by handling field aliases, normalizing pump code usage, and making sure key inspection outcomes were consistently available for reporting. For admin operations, I implemented clearer inspection and pump views so teams can quickly understand who inspected what, when, and what follow-up is required. I also supported dashboard and follow-up improvements to make status tracking, overdue actions, and inspection history easier to review at a glance. This work required careful handling of edge cases, backward compatibility with legacy field names, and race-condition-safe updates so newer inspection data is not overwritten by stale sync events. The result was a more reliable and readable system for both field users and administrators, with stronger trust in inspection records and faster day-to-day decision making.

FlutterFlow & Flutter Developer

CHAIN67 LLC • Freelance

Dec 2025 - Feb 2026 • 2 mos

I worked on mobile product delivery using Flutter/FlutterFlow with a focus on shipping stable features, improving performance, and supporting production growth. My role covered end-to-end development from requirements refinement to implementation, integration, testing, and release support. I helped structure core app flows, improve screen consistency, and implement reusable components so new features could be delivered faster without sacrificing quality. I handled backend-connected functionality such as authentication, role-based access behavior, API integration, and data handling patterns designed for maintainability and scale. I also worked on app reliability through bug fixing, edge-case handling, error-state improvements, and release hardening for Android and iOS. Where needed, I optimized existing modules rather than rebuilding from scratch, which reduced delivery risk and kept timelines practical. I collaborated closely with stakeholders to clarify scope, split milestones, and ensure each release delivered measurable user value. In addition to feature delivery, I supported quality checks, cleanup/refactoring, and deployment-readiness so the product remained stable as requirements evolved. This experience strengthened my ability to work on live products, communicate clearly during iterative builds, and turn partially defined ideas into production-ready functionality. The outcome was a stronger, more maintainable app foundation with better user experience, cleaner implementation patterns, and faster iteration cycles for future product updates.