Sabin Marcu

February 2026 - Present

Bucharest, Romania

December 2023 - September 2025

Bucharest, Romania

Responsible for the patient side application of the company’s health platform

My responsibilities within the team, and throughout the company include

Personal initiatives include, but are not limited to

July 2020 - October 2023

Bucharest, Romania

I’ve been involved in maintaining a 900+ packages monorepo, as well as CI / build tooling and maintenance for 30+ independent micro-frontends, as well as one Golang based backend service. Personal initiatives include, but are not limited to:

Stepped up to fill Team Lead and Manager responsibilities when required

November 2019 - May 2020

Bucharest, Romania

June 2018 - November 2019

Bucharest, Romania

I have worked on many projects, for companies spanning from the US to a few EU countries, to China and Japan, with technologies ranging from serverless AWS, frontend development and mobile app development, to web voice recognition, to hybid React Native projects, serverless video processing and asset generation.

January 2024 - September 2025

Bucharest, Romania

Fully per-partner customizable design system

• Enable full customization from the brand and system colors to sematic mapping of variables to component facets
• Built with Vanilla Extract from the ground up to write fully type-safe code and expose only CSS generated at build-time
• Uses the ESLint Logical Properties package and React ARIA for accessibility.

Unified flow from UX to Dev

• Design variables and variable mappings primary color -> surface background are imported directly from figma
• Variables, mappings and contracts are baked in directly to published packages
• Devs use semantic variables and have no access to primitives or mappings
• Export functions bound to CSS layers to be used by DS or applications

Uses latest CSS techniques

• Uses CSS Layers to delineate clear cascade layers between reset, variables collections, framework (design system) and application styles.
• Uses CSS Containers to encapsulate styles and create truly responsive components and layouts
• CSS Variables and partner-specific colors and mappings are calculated and rendered on server

Modern Monorepo Setup

• Full monorepo tooling built with Yarn Plugins
  • TSConfig Generation
  • ESLint Setup
  • Vite Setup
  • Dependency checks
  • Dependency enforcement
  • Gitlab CI parallel step setup
  • Package versioning with Yarn
  • Commit message enforcement & automation + tooling
• Gitlab CI setup for build, lint, test and publishing any number of packages when required
• Local and CI setup tooling for private scoped npm registries

September 2020 - October 2023

Bucharest, Romania

• CLI System inspired by both ESLint and React / ReactDOM
• Allows developers a type-safe, intuitive and configurable SDK to easily create CLI commands and ESLint-inspired Configs to be published to NPM (CLI SDK)
• Allows consumers to either import a pre-(or partially)-built CLI or build their own from building blocks on NPM (CLI Core)
• Commands are the building-blocks (React Components)
• Configs are fully (or partially) constructed CLIs built from Commands
• If ”You use a library to write code make things happen, and a framework uses your code to make things happen”, then Mono is both
• You use React to create an app, and you use ReactDOM to render the app
• You use the CLI SDK to create Commands and Configs, and you use the CLI Core to build a functional CLI from Commands and/or Configs

November 2015 - January 2016

Southampton, UK

• Goal: Building a tracking and stat gathering utility for Google Chrome, applied to citizen projects such as Zooniverse.

• Formed the basis of a Chrome Extension with the goal of tracking a user’s behaviour and statistics while participating in citizen science projects, both for personal goals (statistics, time tracking) and for global statistics (important for both research and platform improvement).

June 2015 - November 2015

Southampton, UK

• Goal: Applying gamification to crowdsourcing projects to observe performance changes under a different incentive other than monetary gain

• Built an image description type crowdsourcing project that relies on gamification principles to incentivise participants (match two people and have them coordinate in their description of the presented image to progress).

November 2018 - Present

Bucharest, Romania

• I am responsible with workshops related to the ReactJS and GraphQL ecosystems, diving into more basic (ES6/Typescript) or more advanced (Docker) subjects, depending on trainer availability and experience levels.
• To date, I ran multiple single-day, evening and two-day workshops, ranging from ReactJS introductory courses, to ES6, Docker, GraphQL and React Hooks workshops
• Ran a joint workshop with Modex on building an application with Blockchain and ReactJS

2014 - 2015

Southampton, UK

• I was elected as the director of Hackathons for the HackaSoton student society of the University of Southampton.
• Collaborated with the whole committee board and volunteers in organising and coordinating a major, international hackathon (HackaSoton Global)
• Gave several talks / seminars on tech subjects to HackaSoton members and University of Southampton students.
• Brought sponsors and speakers / judges for our hackathons.

2014 - 2015

Southampton, UK

• I have started off as one of the two directors of events for the Fish on Toast student society of the University of Southampton.
• Organised several events for the Society, ranging from speaker events to business workshops.
• Represented the society in several national conferences and events.
• Picked up a broken program and brought it to the point in which it can be successfully re-launched for next year, while providing next year’s committee with a good amount of applicants and traction.
• Built the new website of the society, as well as trying to involve the whole committee in the society’s web presence, and optimising this important part.

• Won first place in the Startup Weekend Southampton 2014.
• A startup created at a hackathon.
• Our project was a platform to create multiplayer games which used multiple devices to create one single game canvas (eg. play ping-pong on a canvas that stretched between two smartphones).

• Won the Summerhacks Hackathon in Timișoara in 2013.
• Automated software management / installer for Raspberry Pi’s.
• Useful for remote installation of software / deletion / activation on a Raspberry Pi connected to the internet.

November 2016 - January 2018

London, UK

• The company focused on automating lab equipment, and bringing the ecosystem online (data, controls, scheduling, etc), in an IoT platform
• I was in charge of the entire online part of the project, from a front-end interface to the connection between clients and their IoT devices, installed in labs

February 2016 - August 2016

Remote

• I was hired to build the Dashboard (Administration) section of the project.
• The project itself was structured in one backend, and three Frontend applications, the Dashboard being one of them.
• Collaborated with a team spread across the world, including USA, UK, Romania and China.

June 2015 - February 2016

Southampton, UK

• I have worked as a temporary worker under Dr. Elena Simperl of the University of Southampton’s Web and Internet Science group, participating in two projects, detailed above, under Academic Projects.

June 2014 - September 2014

Remote

• I was hired as an external consultant, acting as a summer intern.
• My job was to create an SVG-based visualizer / editor for workflow diagrams that were previously generated into images.

October 2010 - September 2011

Remote

• I took on an internship at the ISIS M3 software development company.
• My role was upgrading existing applications to a web / mobile version.
• Designed multiple responsive interfaces for older applications