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Togarriapa/README.md

Tomás Fonseca

Backend Software Engineer | Java | AWS | Production Reliability

I am a backend software engineer at Critical TechWorks, working within the BMW Group ecosystem on production services, cloud-native workflows, and operational reliability.

My work focuses on developing and supporting Java and AWS backend systems, secure REST APIs, serverless data-processing workflows, and observability for distributed services used across international markets. I also serve as the On-Call Team Responsible for UCP production operations, coordinating incident triage, cross-system root-cause analysis, technical ownership, and stakeholder communication.

Engineering focus

  • Backend engineering: Java, REST APIs, distributed systems, service integration
  • AWS and serverless: Lambda, API Gateway, DynamoDB, Step Functions, CloudWatch
  • Production reliability: observability, incident response, root-cause analysis, operational support
  • Data and integration: ingestion and transformation pipelines, API diagnostics, cross-system troubleshooting
  • Delivery and collaboration: requirements clarification, Agile delivery, international stakeholder communication

Current public work

A local-first Home Assistant integration that groups multiple TV and Cast integrations into one controller per physical device, with capability routing, dynamic metadata, application management, diagnostics, and automated discovery.

A responsive Home Assistant dashboard card for unified TV control, including dynamic application and input selectors, playback, volume, remote navigation, activities, artwork, and diagnostics.

These repositories are independent personal projects and are not connected to my employer.

Background

Before moving into software engineering, I worked as a registered operating-theatre nurse. That experience strengthened my ability to communicate clearly, prioritise under pressure, follow rigorous processes, and remain accountable in high-consequence environments.

Connect

LinkedIn Email

Popular repositories Loading

  1. Togarriapa Togarriapa Public

  2. HomeAssistant-Cast-Metadata-Controls HomeAssistant-Cast-Metadata-Controls Public

    Local Home Assistant integration that merges Google Cast, Android TV, ADB and DLNA entities into one controller per physical TV or speaker

    Python

  3. HomeAssistant-Custom-Integrations HomeAssistant-Custom-Integrations Public

    Index of Tomás's Home Assistant custom integrations and cards, each in its own HACS repository

  4. HomeAssistant-Unified-TV-Card HomeAssistant-Unified-TV-Card Public

    Responsive Home Assistant dashboard card for Cast Metadata & TV Controls: apps, inputs, volume and activities

    JavaScript

  5. HomeAssistant_SyncAppV2 HomeAssistant_SyncAppV2 Public

    Home Assistant app that safely syncs a Home Assistant OS config to a private GitHub repo, readable by people and AI assistants

    Python

  6. HomeAssistant_AddOn-Application_Marketplace HomeAssistant_AddOn-Application_Marketplace Public archive