I specialize in building robust, low-latency control systems and monitoring stacks for renewable energy and home automation. My work focuses on the Victron Energy ecosystem, where I've developed a comprehensive suite of tools to bridge the gap between industrial energy hardware and modern web/embedded technologies.

• Systems Programming: Real-time control loops in Python and high-performance services in Go and Rust.
• Embedded & IoT: Custom firmware development with ESPHome, Bluetooth (BLE) proxying, and MQTT-based messaging.
• Energy Management: Advanced ESS (Energy Storage System) logic, split-phase compensation, and grid-zero targeting.
• Full-Stack Monitoring: Real-time dashboards (FastAPI, Vue.js, Tauri) and time-series observability (TIG stack).
• Infrastructure as Code: Managing complex GitHub organizations and repository configurations via Terraform.

My project suite forms a complete ecosystem for home energy management:

graph TD
    subgraph Data["Data & Analytics"]
        direction LR
        RAG[energy-data-rag-pipeline] -->|RAG pipeline| DOCS[Victron docs + community]
        SF[solar-forecast-langgraph] -->|Forecast + LangGraph| MQTT
    end

    subgraph Bridge["Bridge Services"]
        direction LR
        ESP -.->|BLE → MQTT| ESPH[esphome-jbd-bms-mqtt]
        FG[fastapi-mqtt-gateway] -.->|REST/WS → MQTT| MQTT[MQTT Broker]
        MO[mqtt-observability-opentelemetry] -.->|OTel → metrics/traces| MQTT
    end

    subgraph Hardware["Hardware Layer"]
        direction LR
        BMS[JBD BMS / LiFePO4] -- BLE --- ESP[ESP32 / ESPHome]
        TP[Tasmota Plug] -- HTTP --- PV[PV Inverter]
        VIC[Victron MultiPlus/Cerbo]
    end

    subgraph Control["Control Layer (Venus OS)"]
        direction LR
        ESP -- MQTT --- BM[dbus-mqtt-battery]
        TP -- HTTP --- TV[dbus-tasmota-pv]
        BM -- D-Bus --- VIC
        TV -- D-Bus --- VIC
        IC[inverter-control] -- D-Bus --- VIC
        EL[dbus-event-log] -- D-Bus monitor --- VIC
        GOV[venus-os-governance] -- Policy engine --- VIC
        OBS[venus-os-observability] -- OTel tracing --- VIC
    end

    subgraph UI["Monitoring & UI"]
        direction LR
        IC -- MQTT --- MQTT
        MQTT --> DGO[inverter-dashboard-go]
        MQTT --> DPY[inverter-dashboard]
        MQTT --> DVUE[inverter-dashboard-vue]
        MQTT --> DT[inverter-desktop]
        MQTT --> MON[inverter-monitoring]
        MQTT --> MCP[mcp-venus-os]
    end

    %% Invisible edges to force vertical stack order
    Data -.-> Bridge
    Bridge -.-> Hardware
    Hardware -.-> Control
    Control -.-> UI

Advanced ESS Grid-Zero Controller

• Developed a high-frequency (3Hz) control loop to maintain zero grid feed-in for split-phase systems.
• Implemented complex logic for EV charger exclusion, battery protection, and multi-mode energy strategies.
• Tech: Python, D-Bus, Home Assistant API, MQTT.

Real-time Energy Observability

• Built high-performance monitoring interfaces with WebSocket-based live updates.
• The Go version provides a single-binary deployment with sub-10ms latency and minimal memory footprint.
• Tech: Go, FastAPI, Vue.js, WebSockets, Docker.

Cross-Platform Monitoring Suite

• Developed a native desktop application using Tauri and Rust for low-resource system monitoring.
• Implemented secure MQTT communication with built-in security auditing and fuzz testing (OSS-Fuzz).
• Tech: Rust, Tauri, TypeScript, Vite.

Embedded Battery Management Bridge

• Created a robust BLE-to-MQTT proxy to offload unstable Bluetooth connections from the main controller.
• Developed the D-Bus bridge that dynamically registers multiple battery chains as native Victron devices.
• Tech: C++ (ESPHome), Python, BLE, MQTT.

System Observability & Time-Series Data

• Deployed a comprehensive TIG (Telegraf, InfluxDB, Grafana) stack for long-term telemetry storage and visualization.
• Implemented automated log shipping with Loki and GitHub webhook-based auto-deployment for the monitoring infrastructure.
• Tech: Docker, Telegraf, InfluxDB, Grafana, Loki.

Policy Engine with Approval Gates

• Policy engine for Venus OS with SOC limits, charge/discharge rules, inverter control policies.
• Audit logging via dbus-event-log with approval workflows for critical operations.
• Tech: Python, D-Bus, MQTT, Policy-as-Code.

OpenTelemetry/Prometheus Observability Stack

• D-Bus event tracing, inverter metrics export, distributed tracing across MQTT → D-Bus → inverter-control pipeline.
• Tech: OpenTelemetry, Prometheus, Grafana, D-Bus.

RAG Pipeline for Victron Knowledge

• Retrieval-Augmented Generation for Victron Energy documentation and community knowledge.
• Built with FastAPI, LangChain, pgvector, and PostgreSQL.
• Tech: Python, FastAPI, LangChain, pgvector, PostgreSQL.

Solar Forecasting with LangGraph

• Advanced solar forecasting using LangGraph for multi-step reasoning and tool use.
• Tech: Python, LangGraph, LangChain, FastAPI.

Automated Engineering Profile Generator

• Analyzes GitHub repositories, ESPHome configurations, and D-Bus services to generate comprehensive engineering profiles.
• Tech: Python, GitHub API, GraphQL, Jinja2.

MCP Server for Venus OS Management

• Model Context Protocol server for reading and controlling Venus OS devices via D-Bus and MQTT.
• Tech: Python, MCP, D-Bus, MQTT.

Production-Ready REST/WebSocket → MQTT Bridge

• Authentication, rate limiting, and real-time streaming capabilities.
• Tech: FastAPI, MQTT, WebSockets, JWT.

Complete Observability Stack for MQTT IoT Systems

• Tech: OpenTelemetry, Prometheus, Grafana, MQTT.

Audit Log for D-Bus Commands & State Transitions

• Captures all D-Bus signals, method calls, and service lifecycle events on Victron Energy systems.
• Critical for post-mortem analysis of incidents (overloads, battery failures, communication issues).
• Tech: Python, D-Bus, SQLite/TimescaleDB, MQTT.

Copier Template for New D-Bus Services

• Template for generating new D-Bus services with best practices.
• Tech: Python, Copier, D-Bus.

Reference Library of Production-Ready ESPHome Configurations

• Extracted from real deployments monitoring 8+ JBD BMS units, Daly BMS, and various temperature/plant sensors.
• Tech: ESPHome, C++, YAML, BLE.

MQTT / Battery / PV Integration Test Harness

• Tech: Python, pytest, MQTT, D-Bus simulation.

Infrastructure as Code for victron-venus Organization

• Manages the entire victron-venus organization, including 20+ repositories, branch protections, and CI/CD secrets.
• Tech: Terraform, GitHub Actions, HCL.

• GitHub: @4alvit
• Organization: @victron-venus