Alberto Granzotto, Developer in Berlin, Germany
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Alberto Granzotto

Verified Expert  in Engineering

Blockchain Developer

Berlin, Germany
Toptal Member Since
March 2, 2021

Alberto is a freelance software engineer specializing in decentralization, protocols, networking (not the one with business cards), hardware, and open source. He's been coding professionally and building software products since 2012. Alberto joined Toptal to collaborate on projects that interest him namely open-source, privacy, web, decentralization, blockchain, Ethereum, and Solidity.


JavaScript, Go, Solidity, TypeScript, Svelte...
TypeScript, Svelte, Node.js
Package Point
JavaScript, Svelte, Hardware, Raspberry Pi




Preferred Environment

Vim Text Editor, Visual Studio Code (VS Code), Linux

The most amazing...

...thing I've built was SayDAO; the goal was to make a decentralized app that ran on Ethereum and doesn't require any prior knowledge of blockchain.

Work Experience

Senior Software Engineer

2020 - 2021
  • Developed a DAO to manage contributors' work and handle voting.
  • Built an Oracle system in Go that calculates the number of tokens to release based on the value contributed to the DAO.
  • Constructed a time-tracking PWA that connects to Odoo and facilitates the management of tasks.
Technologies: JavaScript, Go, Solidity, TypeScript, Svelte, Progressive Web Applications (PWA), PWA, Blockchain, Architecture

Senior Software Engineer

2020 - 2021
  • Developed a free and open-source platform to create pop-up communities with a strong focus on privacy. It integrates with Jitsi for video calls, EtherPad for taking notes, and a forum.
  • Built a custom core feature to preserve the privacy and anonymity of the participants. Identities are managed using asymmetric cryptography and the client communicates with the server using signed JSON-RPC messages.
  • Built the forum from scratch and integrated web notifications.
Technologies: TypeScript, Svelte, Node.js

Senior Software Engineer

2019 - 2020
Package Point
  • Created a "smart locker" from scratch and had full responsibility for the hardware and software design.
  • Built the circuit board for the drivers to control locks and connected everything to the GPIOs of Raspberry Pi 3.
  • Developed software that could run in "kiosk mode" to control the lockers and allow the delivery and pick-up of parcels.
Technologies: JavaScript, Svelte, Hardware, Raspberry Pi

Senior Software Engineer

2019 - 2020
  • Developed demos on top of Plasma using the UTXO model instead of the classic account-model Ethereum uses.
  • Contributed to the core architecture of the Plasma node.
  • Participated in the decentralized decision-making process and learned a lot about how a real DAO works.
Technologies: JavaScript, Solidity, Ethereum Plasma, TypeScript, Blockchain, Architecture

Senior Software Engineer

2016 - 2018
  • Contributed to the development of BigchainDB v1.0, an open-source scalable database with blockchain characteristics; built demos on top of it and managed releases.
  • Drove the effort to build BigchainDB v2.0—integrating the Tendermint BFT engine, establishing benchmarks, and optimizing code.
  • Proposed and maintained BigchainDB enhancement proposals (BEPs), a protocol to describe and develop new features for the product.
Technologies: JavaScript, Python, MongoDB, Tendermint, RethinkDB, Blockchain, Architecture

Senior Software Engineer

2015 - 2016
  • Developed the front-end code for Ascribe, the first platform for digital art rights management on the Bitcoin blockchain.
  • Composed and optimized the back-end code from queries to execution time.
  • Built a custom web crawler that could download 1.5 billion images from the web while optimizing resources and execution time.
  • Constructed a high-performance reverse-search engine called image-match; it's now open source.
Technologies: JavaScript, Django, Python, Gevent, Bitcoin, Amazon Web Services (AWS), Blockchain, Architecture


2012 - 2014
  • Founded and secured the investment for my startup, Urlist, a social bookmarking platform with the ultimate goal of sorting the web.
  • Served as the CEO—dealing with the investors, hiring developers, leading and managing product and process, and making everything work from day one till the end.
  • Developed the front-end code for the flagship product of my company.
  • Built dashboards to display KPIs, constructed a platform for technical blogging, and developed other apps (also one for the now-defunct FirefoxOS).
Technologies: JavaScript, CSS, Architecture, DevOps, Web API

Senior Software Engineer (2010-2012) | Software Engineer (2008-2009)

2008 - 2012
  • Developed cutting edge technology for smart street lighting that has been deployed in a highway in Italy.
  • Developed a Python gateway to turn on/off the lights, dim the light intensity, collect information about the condition of the lights installed, compress and send the collected data to a remote server, and display on a screen the state of the lights.
  • Integrated the software with the legacy controller provided by the client to react to emergency situations. The system was able to communicate via RS485 and XBee, using the MODBUS protocol.
  • Developed a free, open-source app for the most important association for free software in Italy (2008-09). The goal was to make politicians aware of the principles behind the free software and was localized in English, Portuguese and French.
Technologies: Python, Embedded Software, Modbus Protocol, Digi XBee, RS485, JavaScript, PostgreSQL, TurboGears

Software Engineer

2009 - 2009
  • Worked on Pirelli's annual report and financial book.
  • Developed tools to automatically port Adobe InDesign and QuarkXpress source files to web pages.
  • Filled the gap between the desktop publishing tools and the web.
Technologies: Django, Python, Adobe InDesign, QuarkXpress

Java Software Developer

2007 - 2007
  • Developed a framework to run benchmarks on the company's flagship product.
  • Worked with legacy code and got my hands dirty with complex, layered code.
  • Improved the performance of their web framework by several orders of magnitude by adding a custom cache layer to the system.
Technologies: Jakarta EE, Java, MySQL

Freelance Developer

2007 - 2007
Truelite Srl
  • Developed a custom CRM in TurboGears 1.x and SQLAlchemy.
  • Worked with other developers on a shared codebase.
  • Worked often with free and open-source code, since the company itself is developing FOSS.
Technologies: Python, TurboGears, PostgreSQL

SayDAO is an experiment in facilitating group decision-making in loosely defined communities. The goal was to create a decentralized application running on Ethereum that doesn't require any prior knowledge of blockchain.

It leverages a burner wallet and OpenGSN to allow gasless transactions.

Ethnode is a zero-configuration tool to run a local Ethereum node. It supports both OpenEthereum and Geth. It's an alternative to Ganache CLI that allows a user to develop and test against a real Ethereum node.

Facebook Tracking Exposed
I built the web extension for Facebook Tracking Exposed, a framework to analyze Facebook's newsfeed algorithm. The extension scrapes the public posts in the timeline of the user and interacts with a back end to send and store the data.

Treasure Hunt Creator | THC
THC is a framework to create decentralized treasure hunts. It leverages Ethereum, IPFS, and a zero-knowledge-proof protocol to create competitive games that can be played online or real life.

The project challenges the misconception that "creating a good UX on Ethereum is difficult" by using an in-browser generated address (burner wallet) and gasless transactions.

An example of a game built on top of THC is Planetscape which can be found at the link below.
2007 - 2011

Master's Degree in Computer Science

Università degli Studi di Milano-Bicocca - Milan, Italy

2003 - 2007

Bachelor's Degree in Computer Science

Università degli Studi di Padova - Padua, Italy


Node.js, Gevent, WebExtensions API, Web API


Ethereum Plasma, Geth (go-ethereum), Vim Text Editor, Adobe InDesign, QuarkXpress, Digi XBee


Django, Tendermint, Svelte, TurboGears


Amazon Web Services (AWS), Blockchain, Raspberry Pi, Ethereum, Linux, Jakarta EE, Visual Studio Code (VS Code)


JavaScript, CSS, Python, Solidity, TypeScript, Go, Bash Script, Java


MongoDB, RethinkDB, PostgreSQL, MySQL


Human-computer Interaction (HCI), DevOps


Software Engineering, Architecture, Bitcoin, Hardware, OpenEthereum, PWA, Zero-knowledge Proofs, IPFS, Embedded Software, Modbus Protocol, RS485, Progressive Web Applications (PWA)

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