Architecting mission-critical backends & fluid software.
I engineer complex, fault-tolerant domain systems — from commercial Maritime Planned Maintenance Systems (PMS) with satellite offline synchronization and industrial PMS bulk spreadsheet ingestion to multi-campus University ERPs, high-concurrency RBAC engines, and cross-platform Flutter mobile apps.
Architectural rigor for mission-critical software.
I specialize in systems where failure is costly. Every database query, authorization check, and mobile offline state is built with deterministic reliability.
Resilient Domain Modeling
Translating real-world machinery hierarchies (6 levels deep) and academic degree regulations into normalized PostgreSQL and MySQL schemas with recursive queries.
Granular RBAC Security
Hierarchical role inheritance and bitmask policy enforcement preventing unauthorized data modifications across multi-tenant shipping lines and universities.
Industrial Bulk Ingestion
Stream-based Excel/CSV parsing engines converting 10,000+ row legacy spreadsheets into validated database graphs with topological dependency sorting.
Offline-First Mobile UX
Cross-platform Flutter applications with Clean Architecture, local SQLite storage, barcode scanning, and bi-directional cloud synchronization upon reconnect.
Interactive engineering consoles.
Test the actual business logic: switch user roles, simulate machinery running hour accumulation, trigger maintenance alarms, and inspect ERP attendance recalculations.
Verified engineering case studies.
In-depth architectural breakdowns of systems I have designed and built. Client proprietary details are sanitized in accordance with professional confidentiality.
Technical architecture explorer.
Inspect how high-availability distributed systems, offline synchronization queues, and transactional data pipelines operate under real-world constraints.
Maritime Vessel-to-Cloud Offline Synchronization Engine
Commercial container vessels operate under high-latency, intermittent VSAT links. This architecture combines an on-ship Edge Linux Daemon running SQLite with a shore-side PostgreSQL cluster. When connection is established, changes are synchronized using an idempotent two-way replication protocol.
Adopted Write-Ahead Logging (WAL) and client-generated UUIDs to prevent primary key collision. Transactions on the vessel queue independently and synchronize in batches, keeping satellite payload sizes under 50KB per sync pulse.
If satellite VSAT link drops mid-transmission, the local sync queue records the last acknowledged server transaction vector. Zero data duplication or packet corruption occurs upon reconnect.
Live API playground & endpoint console.
Test simulated backend endpoints with realistic network latency modeling, schema validation responses, and instant cURL snippets.
// No request body required for this GET request// Click 'Send Request' to execute simulated API call...Flutter & offline-first mobile applications.
Engineered cross-platform mobile companions for industrial marine engineers and university campuses. Built with Clean Architecture, BLoC/Provider state management, and offline SQLite caching.
Clean Architecture in Flutter / Dart
Divided into three independent concentric layers: Domain Layer (immutable business entities and use cases), Data Layer (local SQLite DB via Drift and remote REST repositories), and Presentation Layer (reactive BLoC widgets with zero business logic).
Hardware Integrations & Performance
- ✓ QR & Barcode scanner identifying equipment in under 200ms.
- ✓ Native platform camera image compression saving 85% VSAT satellite bandwidth.
- ✓ Firebase Cloud Messaging (FCM) topic broadcast for urgent shipboard alerts.
Specialized software engineering services.
Available for select client contracts, mission-critical refactors, and end-to-end full-stack software delivery.
Custom Enterprise Backends
Architecting secure, scalable Node.js/TypeScript REST and WebSocket APIs backed by PostgreSQL and MySQL. Designed for ACID compliance and zero data loss.
- Granular RBAC & JWT bitmask authorization
- Database schema design & query optimization
- High-availability Docker deployment
Custom ERP & PMS Systems
Full-lifecycle design of specialized operational platforms: equipment running hour trackers, academic grade sheets, attendance engines, and fee ledgers.
- Complex business rule automation
- Tamper-evident audit logging
- Intuitive high-density dashboards
Flutter Mobile & Data Ingestion
Cross-platform iOS and Android apps with offline SQLite sync, alongside high-throughput stream-based spreadsheet ingestion pipelines.
- Offline-first local database caching
- Topological Excel/CSV data migration
- Hardware barcode & camera integration
Verified engineering milestones.
A track record of shipping complex systems, refactoring legacy bottlenecks, and collaborating with cross-functional maritime and academic stakeholders.
Led the backend architecture and database modeling for an industrial Maritime Planned Maintenance System (PMS). Designed an offline synchronization engine for ships at sea, created a 10,000+ row topological Excel ingestion pipeline, and engineered a multi-role University ERP platform supporting granular RBAC and dynamic GPA calculation.
Developed offline-first Flutter mobile applications with SQLite local caching and barcode equipment identification. Built secure Express/Node.js REST microservices with JWT authentication, Redis session caching, and MySQL transactional databases.
Verified Technology Stack
100% Production TestedStatement on Truthfulness & Client Confidentiality
In accordance with professional nondisclosure agreements, commercial shipping lines, vessel identification numbers (IMO), and private university database credentials have been omitted. All diagrams, schemas, and live interactive consoles in this showcase represent authentic architectural implementations built with synthesized test fixtures. No testimonials or client metrics have been fabricated.
Initiate an engineering consultation.
Whether you need a mission-critical backend, an industrial data migration pipeline, or a high-performance Flutter mobile app, let's discuss your architectural requirements.
Direct Channels
Available for remote engineering contracts, technical advisory roles, and full-time senior positions.