Oscar Crescente
Valencia,Carabobo
Summary
Flutter and Firebase developer with expertise in integrating AI solutions to enhance product performance and user retention. Proficient in developing applications using Flutter/Dart and Firebase services, including Auth, Firestore, Functions, and Storage. Skilled in implementing LLMs in real workflows, designing SPAs, creating REST APIs, and managing monetization through RevenueCat. Background in Law ensures structured thinking, clear documentation, and a strong focus on quality and compliance.
Overview
8
8
years of professional experience
Work History
Creator
Nami
11.2025 - Current
- Converted chaotic ideas into reusable blocks, including specifications, prompts, and components.
- Utilized SPA and LLMs to transform chats and inputs into navigable structures.
- Established lightweight content governance for exportable outputs.
- Developed a workspace for founder ideas during Hackathon Anything x Contra 2025.
- Employed no-code tools to enhance project efficiency and accessibility.
Founder & Developer
Moira
08.2025 - Current
- Developed synergy journal with AI for enhanced user engagement.
- Generated structured content and insights using advanced AI algorithms.
- Implemented subscription system using Flutter and Firebase to streamline user access.
- Ensured compliance with store guidelines for optimal app performance.
Founder & Developer
RibEye
08.2025 - Current
- Developed food logging system incorporating circular score, streaks, and phases: Reset, Adapt, Maintenance.
- Designed scoring architecture for food categories with strict/omni modes, rules, and penalties.
- Created engaging badges and gamified UX to enhance user interaction.
- Launched Carnivore Tracker and 'T-Rex University' initiatives to promote community engagement.
- Produced animated mascot in RIVE to increase brand visibility.
- Implemented low-rep training module to optimize user performance.
Product & Mobile Developer (Flutter)
RepSet
03.2025 - Current
- Led end-to-end development of AI mobile app for workout planning and tracking.
- Architected UI/UX, navigation, and state management using Riverpod; integrated ObjectBox/Hive for data storage across iOS, Android, and web platforms.
- Developed serverless backend with Firestore for data modeling, indexing, and rules; utilized Cloud Functions for aggregations, AI routines, authentication, and cloud storage.
- Designed AI features including prompts and pipelines for personalized routines and structured exercise classification.
- Implemented monetization strategies using RevenueCat for offerings, pricing/testing, webhooks for trials, renewals, cancellations, and billing issues.
- Conducted analytics on user engagement events, PRs, and abandonment; created funnels and dashboards to inform roadmap decisions.
- Managed releases including builds, notes, TestFlight setup; ensured compliance with privacy regulations (App Privacy), ATT requirements, metadata management for staged rollouts.
Manager
Dougsoluciones C.A
Valencia, Carabobo
08.2017 - Current
- Introduced innovative ideas and solutions to enhance team performance and outcomes.
- Executed daily tasks with precision and efficiency.
- Collaborated with a diverse group of colleagues to achieve objectives and resolve product-related issues.
- Enhanced customer satisfaction by addressing problems with expertise and friendly service.
- Prioritized and organized tasks to meet service goals efficiently.
- Served as Owner/Founder of dougsoluciones.com, a family business established in 2002.
Education
Degree in Laws - Laws
Universidad
Venezuela08-2012
Skills
- Flutter and Dart development
- State management with Riverpod
- Database management with ObjectBox and Hive
- UI system design
- Firebase service integration
- Scheduled tasks and webhooks
- Structured generation and classification (AI)
- Automation strategies
- Single-page applications (SPA)
- REST API design and implementation
- Version control with Git
- Continuous integration and deployment (CI/CD)
- Event instrumentation and analytics
- Product dashboards and conversion funnels
- Error tracking with Crashlytics
- Firestore queries and indexing
- Security rules implementation
- Token management and secret handling
Websites
Portfolio Profiles
https://crescente.dev
Languages
- Español, nativo
- Inglés, avanzado
Selected Achievements
- App releases fully compliant with Apple’s guidelines (Privacy, ATT, metadata, 4.3), with subscription operations via RevenueCat.
- Real-time features and a robust offline-first architecture (workout and metrics sync with conflict reconciliation).
- Latency reduction via proper indexing, selective denormalization, and cold-start mitigation.
- Webhooks to automate subscription state changes and win-back campaigns.
- A/B-testable paywalls and pricing without resubmitting to the store; rapid, data-driven iteration.
Key Skills
- Flutter/Dart for iOS, Android, and Web
- Riverpod state management
- ObjectBox/Hive local storage
- Modular architecture
- Rive micro-animations
- UI design systems
- Firebase (Auth, Firestore, Functions, Storage)
- Supabase
- Webhooks and scheduled tasks
- In-app LLM assistants; structured generation, classification, automations
- Single-Page Applications (SPA)
- REST APIs (design, versioning, OpenAPI)
- Pagination and rate limiting
- RevenueCat (offerings, entitlements, trials, upgrades/downgrades)
- Win-back flows via webhooks
- Event instrumentation, funnels, product dashboards
- Crashlytics and alerting
- Firestore indexing and query tuning
- Cold-start mitigation and client caching
- Least-privilege security rules; server validation in Functions
- Token and secrets management
- ATT / App Privacy compliance
- Git and code reviews
- Basic CI/CD and versioning
- Release notes, TestFlight, staged rollouts
- Cloudflare (DNS, CDN, edge) with cache policies and delivery optimizationentrega
Timeline
Creator
Nami
11.2025 - Current
Founder & Developer
Moira
08.2025 - Current
Founder & Developer
RibEye
08.2025 - Current
Product & Mobile Developer (Flutter)
RepSet
03.2025 - Current
Manager
Dougsoluciones C.A
08.2017 - Current
Degree in Laws - Laws
Universidad