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00 / Bio

Giovanni Dimeo.
Engineer on call for non-technical founders.

Five offers, one operator. MVP Rescue, Production-grade MVP, AI Agent Build, Engineer on Call / Fractional CTO retainer, and a free Fragility Audit. 10 years of production behind every engagement. The same hands that ship Calendbook will ship your build, no team to hand off to.

01 / Offers

What I sell.

Five productized offers, designed so non-technical founders know exactly what they're buying: MVP Rescue (€9.500, 3 weeks) hardens an AI-built prototype for production; Production-grade MVP (from €19.000, 6 weeks) builds the real thing end to end; AI Agent Build (€25.000, 4 weeks) puts an agent your team trusts in production; the Engineer on Call / Fractional CTO retainer (from €3.000/month) keeps a senior engineering brain on tap after launch; and a free 5-minute Loom Fragility Audit if you're not sure where you fit.

Day to day I write Python and TypeScript backends, design AWS architectures (Lambda, API Gateway, DynamoDB, Step Functions, EventBridge), and run production for the SaaS I co-own. The technical specialty (Python, AWS Serverless) is the engine behind the offers, not the headline.

02 / Skills

What I'm specialized in.

Backend

Python (FastAPI, Flask, async), Node.js / TypeScript, REST + event-driven APIs, Postgres, Redis, queues and workers.

Cloud & AWS

Production AWS architectures, IAM least-privilege, VPC, RDS, S3, CloudFront, Route 53, CloudWatch, multi-account organizations.

AWS Serverless

Lambda (Python + Node), API Gateway, Step Functions, DynamoDB single-table, EventBridge, SAM / CDK / Serverless Framework, Powertools.

DevOps

Terraform, AWS CDK, GitHub Actions, Docker, ECS / Fargate, Sentry, structured logging, blue-green deploys.

AI

Production LLM integrations (Claude, OpenAI, open-source), agents, tool use, RAG, eval suites, prompt-injection defenses, cost monitoring.

03 / Timeline

10 years, briefly.

  1. 2012

    Started coding

    C#, building for fun. The first bite.

  2. 2016

    University of Bari

    Computer Science (2016–2020).

  3. 2020

    Co-founded Calendbook

    Backend & cloud engineering. AWS serverless from day one.

  4. 2022

    Deliverect

    Core Ecosystem team. Partner API security reviews. HashiCorp Vault migrations. Loyalty Program in the core.

  5. 2025

    AVITMS

    Aviation training systems. Solo deployment to a zero-trust, classified environment.

  6. Now

    Independent

    Three SaaS running. MVPs, agents, and Shopify for founders who want to ship.

04 / Principles

Three things I'm strict about.

Code ownership

Day 1, your repo, your accounts. I never hold your code or infrastructure hostage.

Fixed scope, honestly

Scope changes are quoted separately, never absorbed silently, never inflated silently.

No middle layer

You talk to me. I write the code. No account manager, no offshore relay, no junior re-routing.

05 / Elsewhere

Find me.

06 / Next

Bring me a problem.

30-minute call. We talk about your build, your goals, your constraints. You walk away with scope, timeline, and a starting price.

Book a 30-min call

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