I design and build production-grade SaaS platforms with real-time synchronization, scalable backend architecture, and cloud-native deployment pipelines.
My focus is not just writing code — but engineering systems that scale, remain maintainable, and perform under real-world load.
- Real-time field service platforms
- Fintech & transactional web applications
- Multi-tenant SaaS systems
- Cloud-deployed frontend + API ecosystems
- Android mobile applications
- Architect before coding
- Separate concerns (UI ↔ Domain ↔ Infrastructure)
- Enforce data integrity (RLS, indexing, constraints)
- Automate deployment pipelines
- Optimize performance at both API and UI layers
- ⚡ Reduced API response times by 30% via query optimization and indexing
- 📈 Improved UI interaction flow resulting in 25% higher engagement
- 🔁 Implemented CI/CD pipelines reducing deployment overhead by 40%
- Angular (Standalone Components)
- React + TypeScript
- Next.js
- RxJS
- TanStack Query / Router
- Node.js / Express
- Python
- REST & GraphQL APIs
- Authentication & Authorization (JWT, RLS)
- PostgreSQL
- MongoDB
- MySQL
- Google Cloud Platform (GCP)
- AWS
- Vercel
- GitHub Actions
- Docker
- Android (Java / Kotlin)
FieldFlow: FieldFlow Billing is a Vite + React + Supabase field-service dashboard for trade businesses, with a strong focus on plumbing, electrical, applicance repair and Refrigeration operations (dispatch, service calls, compliance, inventory usage, and billing visibility). - https://github.com/WhitelightningDev/fieldflow-billing
Found your pet: FoundYourPet is a comprehensive pet safety and management application that connects pet owners with a smart tagging system. Designed to keep your pets safe, the platform allows you to register your pets, manage their profiles, subscribe to tag packages, and even generate QR codes for quick identification and recovery. - https://github.com/WhitelightningDev/foundyourpet
Multi-tenant dispatch system with live technician tracking, job cards, and profitability dashboards.
Stack: Angular, Supabase/PostgreSQL, GCP
Transaction-driven web platform with authentication, API integration, and scalable UI architecture.
Stack: Angular, REST APIs, Cloud Deployment
Inventory and asset tracking platform with role-based access and real-time updates.
Stack: React, Node.js, PostgreSQL
- GitHub: https://github.com/WhitelightningDev
- Portfolio: https://whitelightningdev.vercel.app/
- LinkedIn: https://www.linkedin.com/in/daniel-mommsen-a51b15253/
💡 Open to collaboration, SaaS partnerships, and high-impact engineering opportunities.