Massimo Zambelli
Engineering Manager
Salary / Daily rate
Paris, France
Freelance, open to permanent contract
Can come onsite
Skills
Languages
About me
Intro
Engineering Leader with 10+ years building scalable SaaS platforms and managing high-performing tech teams. Led technical merges, migrations, and team growth at scale - promoted 3 engineers to senior roles while driving platform innovation. Expert in React/TypeScript development, CI/CD, and turning complex technical challenges into business growth.
Work experience
CTO - Founder
GearTrackerFreelance
Nov 2023 - Present
3 years
France · Remote
GearTracker is a SaaS tool to manage and inspect regulated equipment, PPE. It helps saving time in your insepctions and protect your teams
Hotjar | by Contentsquare
May 2020 - Jan 2025
4 years 9 months
Remote, OR 97458, USA
Senior Engineering Manager
Apr 2024 - Jan 2025
10 months
Remote, OR 97458, USA
Following a merge with Hotjar parent company, I continued my role in leadership in the frontend platform team, but from 3 to 8 engineers. Our main job was planning and handling the technical merge between multiple different stacks, with different monorepos, some with SPAs, some with multiple micro-frontends, etc. We acted as technical experts helping and guiding product teams in their journey towards merging into a unified application for a unique product following the two companies' merge.
Engineering Lead
Sep 2022 - May 2024
1 year 9 months
Remote, OR 97458, USA
I switched from an individual contributor to a leadership position where I helped two different teams: A product team focused on cross app improvements like comments, labels, etc. I had both the technical and people leadership of a team of 4 engineers. I did a lot of mentoring, pushed for cleaner code and better practices, especially in testing. 3 of the 4 engineers were promoted to Senior Software Engineers while under my leadership. I paired a lot with the Product Manager as well. A platform team focused on frontend, from local environment tooling to CI/CD to bundling to dependencies to core systems. I had 3 engineers under my leadership, with 2 of them Staff Software Engineers. We handled big migrations (Gitlab to Github with CI/CD) and revamps of some tools. We also maintained the Design System.
Senior Software Engineer
May 2020 - Oct 2022
2 years 6 months
Remote, OR 97458, USA
I worked on two different teams as an individual contributor: A product team handling session replay where I did a lot of TypeScript and React, and migrated code from an older AngularJS codebase. I worked closely with other engineers, designers and product managers. A tech team where I was the first engineer, creating a Design System from scratch. This involved all the bundling and tooling, creating the various needed components, but a lot of it was the conception, adoption measurements and defining contribution guidelines so that the Design System could become more or less autonomous.
Aircall
Dec 2017 - May 2020
2 years 6 months
Région de Paris, France
Lead Software Developer
Jan 2019 - May 2020
1 year 5 months
Région de Paris, France
Skills: React.js · Management · Intégration continue et livraison continue (CI/CD) · TypeScript
Frontend Developer
Dec 2017 - Dec 2018
1 year 1 month
Région de Paris, France
Part of the Integration squad, working with third parties services and APIs to integrate Aircall product into customers tools. I worked on multiple projects: Zendesk application, Chrome extension, Intercom widget, open-source libraries, and on the main phone and backoffice part of the product. AngularJS, React, Vanilla JS, Webpack, CircleCI
Frontend Developer
uptilab
Dec 2016 - Dec 2017
1 year 1 month
Région de Paris, France
I worked on a small team of 5 developers on a data reporting web app. Part of my work was to redo the whole design of the app pairing with the designer. We created a design system and a CSS framework to base the app on, and rewrote the views with this system. I contributed to new features and maintenance of the application. Ember.js, SCSS
Web Developer
Lima
May 2014 - Oct 2016
2 years 6 months
Région de Paris, France
I worked on the main desktop application, which runs on a Web stack behind a Qt app. For that, we developed a JS library that allows the communication between multiple windows through the Qt layer. This app has a main daemon that aggregates information from the file system and acts accordingly by opening specific windows or sending messages to the OS notification system, etc. My tasks were from webdesigning the application views, maintaining the Qt layer to analytics integration. But my main task was developing all the logic layer in JS. I also worked on other projects like building a CSS framework from scratch, Node applications and other websites.
CTO
That's My Job
Jun 2013 - Jan 2014
8 months
Paris, France
Our company pitch was dealing with reducing the time people spend looking for a job, due to irrelevant offers proposed by job boards. The main idea was to provide a real match between job offers aggregated from the web and profiles customized by the users, then send the offers to the concerned users. As CTO, my role was all the technical stuff, from developing back and front end web interfaces (Symfony2/JS) to system administration (Unix).
Web Developer
Weblib
Aug 2011 - Jul 2013
2 years
92100 Boulogne-Billancourt, France
- Frontend development, mostly applications with responsive design, HTML5/CSS3/JS/JQuery/Backbone.js. - Leading a team of 4 devs working on a custom CRM/MDM in Symfony2 and on a custom hotspot solution. I also handled the UX of these projects. Scrum methodology.
Web Developer
Zifiz
Jan 2011 - Aug 2011
8 months
Paris, France
Zifiz was selected by Le Camping, a startup accelerator in Paris, for its first season. I developed most of the web services of Zifiz, desktop and mobile web applications, and created a Windows client in Qt for importing large chunks of data. I helped 3 others interns (Designer, Android developer, Front web developer) who were working with me.
R&D Intern
Buzzing Light
Mar 2010 - Jul 2010
5 months
Paris, France
My internship subject was ‘Human Behaviour on the Web’. The main idea was to develop a adaptive web platform which would change and evolve based on the user’s behaviour. I focused on building a tracking system working as a proxy gathering data on the user: mouse clicks, mouse movements, eye movements with an eye tracker, time spent on each page, etc. I used JS, PHP, SQL.
Education
UC Irvine
Summer Courses
2011 - 2011
1 month
ECE. Ecole d'ingénieurs. Engineering School.
Master's Degree in Engineering
2006 - 2011
5 years 1 month
Concordia University
Full Semester
2008 - 2008
1 month