Applications that fit
Native Apple applications and practical tools shaped around the people using them. From a focused prototype to a maintainable codebase.
Swift · SwiftUI · Python
Public example: MoneyWiz ToolsSoftware & infrastructure consultant
I’m Marco Massari Calderone. I develop applications and websites, connect services through APIs, and automate infrastructure. I can help you build something new or work on a system you already have.

GitHub snapshot . Explore my GitHub
Repository count includes forks; stars exclude forks. Contributions count merged public pull requests outside my own account. GitHub @marcomc
Application development, infrastructure and automation. We can start with a specific task or discuss what your project needs.
Native Apple applications and practical tools shaped around the people using them. From a focused prototype to a maintainable codebase.
Swift · SwiftUI · Python
Public example: MoneyWiz ToolsFast, accessible websites, web applications and backend services. Thoughtful interfaces with integrations that connect the moving parts.
JavaScript · TypeScript · PHP
Public example: Moose Master guideRepeatable infrastructure, dependable delivery pipelines and clearer operations. I help simplify deployment, diagnose failures and make maintenance manageable.
Linux · Docker · Kubernetes · Ansible · CI/CD
Public example: SplinterConnect services, move data safely and remove repetitive work. Custom command-line tools, API integrations and Google Workspace automation.
Python · REST APIs · Apps Script · SQL
Public example: mcp-osxphotosUseful bridges between hardware and software: Raspberry Pi services, device telemetry and home-automation integrations.
Raspberry Pi · MQTT · Home Assistant
Public example: BMGatewayA fresh pair of eyes on architecture, code quality or a stubborn operational problem. Concrete recommendations, documented choices and a clear next step.
Reviews · Troubleshooting · Technical planning
A few public examples of how I approach real engineering problems. The code and contributions are there to explore.
Own public project
Ansible-based macOS provisioning that turns workstation setup into a repeatable, versioned process.
Automation / Ansible
View project — SplinterMerged upstream contributions
Contributions to a Python API: more robust handling of nullable metadata, safer test fixtures and packaging improvements.
Python / Data compatibility
View contribution — MoneyWiz API View contribution #38Own public project
An independent, unofficial game guide with a searchable card catalogue and an interface in 21 languages. A public example of a usable multilingual website.
JavaScript / Multilingual web
View project — Moose Master guide Visit websiteOwn public project
A Raspberry Pi battery-monitor gateway connecting Bluetooth telemetry, a web interface, MQTT and Home Assistant.
Python / Connected hardware
View project — BMGatewayOwn public project
A macOS command-line toolkit for inspecting personal-finance data, with compatibility checks, dry-run plans and guarded writes through Core Data.
Python · Swift / Data tooling
View project — MoneyWiz ToolsOwn public project
An MCP server connecting AI tools to the osxphotos command-line interface for Apple Photos. Includes client setup documentation and executable health checks.
Python / AI integrations
View project — mcp-osxphotosWe start with your context, priorities and constraints.
I propose a scope, deliverables and a quote before the work begins.
Small, reviewable steps with visible progress and useful feedback.
Working code, practical documentation and agreed next steps.
Yes. We can start with existing code, infrastructure or a process that needs attention. The first step is to understand the context and constraints.
Tell me what you need, what already exists and any relevant deadlines. We agree the scope, expected deliverables and quote before work starts.
The agreed work includes working code, practical documentation and clear next steps. Any further support is discussed as part of the scope.
Software & infrastructure consultant
For consulting enquiries or a project quote, email me with a little context: what you need, where you are now and any timing constraints.
marco@marcomc.com