To stand out on a platform like Malt, your description needs to highlight both your product-oriented mindset and your technical mastery. Clients look for freelancers who can build reliable, scalable systems while understanding the end-user’s needs.

Here is the English version optimized for a high-end freelancer profile:

VolontariApp | Social & Environmental Impact Platform
VolontariApp is a citizen engagement platform designed to bridge the gap between good intentions and real-world action. The application simplifies volunteering through a fluid, “swipe-to-act” user experience and a location-based approach.

Impact: Facilitates litter cleanups, food distributions, and local solidarity initiatives.

Engagement: Gamification system (badges) and neighborhood mobilization tools.

Core Features: Real-time interactive map, community event creation, and personal impact tracking.

Technical Expertise & Architecture
To ensure absolute data consistency and system scalability, I implemented a robust microservices architecture centered around the Transactional Outbox Pattern.

Frontend: React Native (Cross-platform iOS/Android).

Backend: NestJS Microservices.

Message Broker & Cache: Redis (Queues & Streams).

Data Stack: PostgreSQL with SQL Triggers for automated workflow orchestration.

Technical Deep Dive: Resilience & Consistency
I engineered an asynchronous processing pipeline ensuring “at-least-once” delivery for two critical data flows: Jobs (1:1) and Events (1:N).

Processing Workflow:

Persistence: Initial state is saved to a jobs_outbox table to guarantee atomicity between the database and the message broker.

Relay: An Outbox service polls the table and dispatches tasks to Redis.

Audit & Execution: Fine-grained state management via a job_audit table (Pending → Working → Done).

Event-Driven Flow: Automatic propagation via SQL Triggers to an event_outbox for multi-service broadcasting.

Streaming & Cleanup: Final publication to Redis Streams with a post-processor ensuring the cleanup of processed resources.

Key Contributions
Scalability: Built a system capable of handling high-concurrency event bursts using Redis Streams.

Reliability: Eliminated data loss risks during network partitions or service failures via the Outbox Pattern.

UX/UI: Developed a smooth, responsive mobile interface to maximize user retention and social impact.

VaultedMind is a high-security, full-stack application designed to track mental health, daily journals, and personal reflections with absolute privacy and military-grade encryption.