Alex Muscă

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ABOUT ME

Full Stack Web and Mobile Developer

I’m a senior full stack developer with a deep passion for creating impactful software solutions. Throughout my career, I’ve worked in various roles—from core team member in a startup to freelancer, and as part of large teams within big companies—gaining a broad perspective on software and product development.

With solid technical foundations in full stack development, I thrive on tackling complex challenges, optimizing performance, and building robust systems. Last +7 years in React, NodeJS, and PostgreSQL, MongoDB and last +5 years in Typescript, NextJS and GraphQL. Experienced in the full cycle of a web application product: architecting, writing, testing, deploying, monitoring, and maintaining. Technical team lead with a proven track record of increasing users retention of 23% in web apps. Seeking to leverage proven leadership and expertise to become a better senior software engineer and consultant.

I believe that great software comes from understanding both the technical details and the people who use it. Quality always comes first for me, alongside simplicity, testability, and a user-first approach. I'm particularly passionate about developer experience, from testing to code architecture and clean code principles, with a focus on domain-driven design (DDD) and data modeling.

Romanian, English

Bucharest (+03:00)

Joined November 2017

EXPERTISE

React

7 years experience

React is my most used library for front end development. It's flexible and sutable for all ranges of web apps. Making the requests as fas...

React is my most used library for front end development. It's flexible and sutable for all ranges of web apps. Making the requests as fast and as efficient as possible was a challenge I had to over come along side with making the JS bundle as small as possible.

TypeScript

5 years experience

I use TS mostly in React/React Native projects.

Node.js

4 years experience

Experienced with Node.js in making servers and APIs. I use it in combination with Require.js and Nginx which works great. I have experie...

Experienced with Node.js in making servers and APIs. I use it in combination with Require.js and Nginx which works great. I have experience with Node on Ubuntu, Docker container and Intel Nuc smart box devices.

JavaScript

7 years experience

Javascript is the language I used the most so far. I love it because it's flexible and very versatile. You can get up and going in no tim...

Javascript is the language I used the most so far. I love it because it's flexible and very versatile. You can get up and going in no time. I used it in many different forms - frameworks, on both front end and back end. The tools I use right now are: React and React Native + NodeJS with Express and Webpack.

MongoDB

5 years experience

Next.js

4 years experience

GraphQL

4 years experience

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE

Stack Overflow

134 Reputation

EMPLOYMENTS

Full stack web and mobile

Freelancer

2015-01-01-Present

From around 2015 I've been involved in a number of projects and companies as a tech consultant and full-stack developer. I had the chance...

From around 2015 I've been involved in a number of projects and companies as a tech consultant and full-stack developer. I had the chance to work in industries such as `education`, `data management` and `data visualization`, `touristic entertainment`, and `IoT`.

Node.js

MongoDB

Elasticsearch

Node.js

MongoDB

Elasticsearch

TypeScript

Firebase

React

React Native

Gatsby

Next.js

Express.js

Senior Full-stack Engineer

Toptal

2022-06-01-2024-09-01

As a senior full stack developer at Toptal, I worked on improving marketing processes and systems, and developed tools for generating ...

As a senior full stack developer at Toptal, I worked on improving marketing processes and systems, and developed tools for generating case studies with LLMs. Key achievements include:

Technical Leadership & Code Architecture

Led the integration of Google Slides, Google Drive, and Google Ads APIs, identifying limitations early and establishing the groundwork for seamless development. Spearheaded discussions on LLMOps solutions, database restructuring, and the standardization of logging and error handling across teams. Directed large-scale solutions, including campaign management systems, version history, and operations for validating and publishing API/BigQuery resources.

Collaboration & Cross-Team Impact

Played a key role in defining user flows, service blueprints, and narrowing project scopes in collaboration with stakeholders, product teams, and data engineering. Actively contributed to a technical task force, facilitated knowledge sharing across teams, and improved productivity through cross-team collaboration. Also contributed to mentorship programs, helping junior engineers enhance their skills and impact.

Open Source & Tool Optimization

Led the migration of internal repositories to open-source projects, ensuring proper documentation, contribution standards, and community involvement. Optimized Docker images and NextJS performance for internal and external tools, while developing and maintaining UI libraries for efficient company-wide use. Consistently improved performance, analytics tracking, and maintained high-quality standards across tools and projects.

TypeScript

React

Kubernetes

TypeScript

React

Kubernetes

Next.js

Prisma

Helm Charts

Open source full-stack developer

PartnershipOnAI

2021-01-01-2021-12-01

AI incident database is a collection of well-structured information that classifies (using custom taxonomies) details about a specific ev...

AI incident database is a collection of well-structured information that classifies (using custom taxonomies) details about a specific event in which an AI system was possibly involved. My job as an open-source contributor in this project: • re-build the web app that interacts with this data • advise on the best practices for solving specific user-facing problems • decrease loading times of the app by improving the code logic

MongoDB

React

Algolia

MongoDB

React

Algolia

Gatsby.js

PROJECTS

Case Study Generator

2024

A web-based tool developed in Next.js, React, and TypeScript for creating case studies based on generated content. It involved LLM model ...

A web-based tool developed in Next.js, React, and TypeScript for creating case studies based on generated content. It involved LLM model interactions for processing a large volume of data in a standardized way. I was involved in the initial discovery, planning, architecting, and 3rd-party integrations.

PostgreSQL

Testing

Redis

PostgreSQL

Testing

Redis

TypeScript

Google BigQuery

Full Stack

Docker

React

Kubernetes

Next.js

Google ads

Prisma

Google Ads Campaign Builder

2023

A Next.js, React, and TypeScript web-based tool that provides a user-friendly UI for creating and managing Google Ads campaigns and resou...

A Next.js, React, and TypeScript web-based tool that provides a user-friendly UI for creating and managing Google Ads campaigns and resources. The main functionality included bulk creating and publishing more than 100,000 resources in a reliable and fail-safe way. It also consists of a complex and reliable multi-approval system with built-in notifications, status tracking, and integration with other tools. I led the development of the Google Ads API wrapper, which enabled a high volume of data creation, rollback system, and validation.

TypeScript

Docker

React

TypeScript

Docker

React

Material-UI

Next.js

Google ads

Prisma