Full-Time Role
Current full-time engineer at Alliant Insurance (San Diego, California).
About
About the Engineer Behind Xelseor
I am Johnathon. I am currently working full-time at Alliant Insurance in San Diego, California, and I am not looking for full-time work. I love my current role and expect to stay in it. Xelseor is where I build in my free time, pursue product ideas, and create additional profit streams through focused software execution.
Melbourne, Florida • Groundswell Startups Member
Current Focus and Availability
I am not open to full-time opportunities. My availability is focused on selective project partnerships and high-impact delivery.
Builder Outside Work
Xelseor is where I channel free-time execution into software products, client outcomes, and recurring revenue tracks.
Community
Based in Melbourne, Florida and actively connected to the startup ecosystem through Groundswell Startups.
Engineering Background
15+ Years Across Architecture, Delivery, and Production Operations
Core Engineering Track
- 15+ years as a C#/.NET software engineer.
- Former principal engineer at Appech Software Solutions and Melaleuca.
- Multi-language delivery in Python, Go, PHP, and other stacks as needed.
- SOLID principles and clean architecture are non-negotiable foundations.
Architecture Depth
- Layered monolith experience.
- Modular monolith architecture and operation.
- Microservices ecosystems.
- Distributed application patterns for scale and resilience.
Platforms, Cloud, and Data
Cloud-Native Delivery with Broad Data Platform Experience
Cloud and Deployment
- AWS and Azure production deployment experience.
- Azure is the preferred cloud platform.
- Hands-on deployment with virtual machines.
Data Platforms
- SQL Server, PostgreSQL, and DB2.
- MongoDB, Cosmos DB, and DynamoDB.
- Relational and document system design for production workloads.
Integration Patterns
- Saga-pattern implementation for long-running transactions.
- Cross-module orchestration in modular monolith systems.
- Reliable service-to-service transaction flows in microservices.
Delivery Track Record
Proven Production Delivery in Enterprise and Regulated Domains
Scale and Throughput
Architected and engineered over a dozen production applications, including systems used by thousands of daily users and high-throughput environments handling millions of transactions per second.
Compliance and Trust
Experience delivering in SOC 2 and HIPAA-influenced contexts, with strong GDPR-aware data handling and privacy-conscious implementation patterns.
Domain Breadth
Integrated and delivered across medical, automotive, financial, and insurance systems, including complex CRM and ERP integrations and large automation initiatives.
App Studio Execution Proof
Recent Output While Running Full-Time
In the last two months, while working full-time and running App Studio, I shipped the products currently listed on the App Studio page. The goal is consistent: fast execution, production quality, and sharp presentation.
FamilyHub
Household coordination workflows with practical day-to-day utility.
Open FamilyHubDungeonAI
AI-assisted tabletop support focused on fast, creative campaign workflows.
Open DungeonAIDeviant Dice
Interactive tabletop utilities and digital gameplay tooling.
Open Deviant Dice
Need Senior Engineer-Led Delivery That Actually Ships?
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