Full-Stack Development · Platform Architecture

SergiuZaharia

Full-Stack Developer & Platform Architect

I design and build modern web applications, backend systems, APIs and scalable digital platforms with a strong focus on architecture, structured data and operational workflows.

Professional Profile

Building complete systems, not isolated pages.

My work covers frontend and backend development, API architecture, databases, authentication, structured metadata, workflow automation, file processing and infrastructure.

I approach every project as a complete technical system: interface, application logic, data architecture, integrations, deployment and operational control.

Selected Work

Systems & Architecture

A selection of platform, data, workflow and application projects.

Platform Architecture

Multi-Service Cloud Platform

A modular platform architecture built around a centralized API, structured data model, client applications, administration workflows and scalable infrastructure.

Next.jsNode.jsPostgreSQLRedisDocker
Client Applications → API → Backend Services → Data Layer → Object Storage
Data Architecture

Catalog & Metadata Architecture

A structured catalog model for complex relationships between works, recordings, contributors, identifiers, territories, ownership and rights information.

Data ModelingPostgreSQLMetadataAPI
Work ↔ Recording ↔ Contributor ↔ Rights Holder ↔ Territory
Web Application

Audio Processing Studio

Browser-based audio processing prototype supporting WAV workflows, microphone input, waveform visualization, external API integration, playback and export.

ReactTypeScriptWeb AudioMediaRecorder
Upload → Decode → Process → Preview → Export
Analytics Architecture

Social Analytics Hub

A unified architecture for connecting multiple social platforms, normalizing incoming data and presenting analytics through one central interface.

API IntegrationData LayerAnalyticsDashboard
External Platforms → Connectors → Unified Data → Analytics
Workflow Architecture

Digital Rights & Claims System

A structured rights-management system for ownership records, supporting evidence, claims, review, conflict resolution and complete audit history.

WorkflowRBACAuditData Architecture
Asset → Ownership → Evidence → Claim → Review → Resolution
Earlier Development

ATS Group Sensor & Monitoring Systems

Earlier development work involving sensor, monitoring and data-processing structures. Archived technical diagrams and documentation will be added after review.

SensorsMonitoringData Processing
Sensors → Collection → Processing → Monitoring

Technical Expertise

Technology stack

Modern technologies for frontend, backend, data and infrastructure.

Next.jsReactTypeScriptJavaScriptNode.jsNestJSPHPPostgreSQLRedisDockerNginxLinuxREST APIsObject StorageGitGitHub

Engineering Approach

Clear architecture. Controlled complexity.

Systems are structured around separation of concerns, centralized data management, security, maintainability, auditability and long-term scalability.

FrontendAPIServicesDataInfrastructure

Contact

Software, platform and web development.