Marta – Typescript, React, Node.js, experts in Lemon.io

Marta

From Spain (UTC+2)flag

Front-end Web Developer|Middle-to-senior
Mobile Developer|Middle
Back-end Web Developer|Junior-to-middle

Marta – Typescript, React, Node.js

Marta is a Frontend and Mobile Engineer with strong expertise in TypeScript and solid experience with React, Next.js, and React Native. She has delivered production web and mobile applications across consumer, enterprise, and EdTech products, with additional hands-on experience in Node.js, NestJS, databases, and cloud infrastructure. Her strengths include frontend architecture, reusable design systems, testing strategy, and product-focused development. Marta has also led teams of up to 5 engineers, combining hands-on development with technical mentorship, hiring, and cross-functional collaboration.

18 years of commercial experience
Main technologies
Typescript
7 years
React
8 years
Node.js
8 years
Next.js
1.5 years
React Native
2.5 years
AWS
5 years
Additional skills
Angular
SCSS
Jest
Nest.js
GraphQL
SQL
Playwright
Storybook
Terraform
Direct hire
Possible
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Experience Highlights

Senior Full Stack Engineer
Sep 2023 - May 20262 years 8 months
Project Overview

Consumer web and mobile platform used by millions of outdoor enthusiasts to track activities such as running, cycling, and hiking and transform them into interactive stories and animated 3D videos.

Responsibilities:
  • Built and maintained the mobile application using React Native, TypeScript, GraphQL, and Apollo Client;
  • Developed web applications using React, Next.js, TypeScript, and Contentful;
  • Architected and developed backend services using Node.js, NestJS, and SQL, contributing across the full application stack;
  • Designed and ran A/B tests to evaluate product changes and optimize the user experience;
  • Developed a reusable design system using React and Storybook to support consistent UI development across products;
  • Improved application quality through automated testing with Jest, React Testing Library, and Playwright;
  • Automated infrastructure and application deployments using Terraform, AWS, and GitHub Actions.
Project Tech stack:
React Native
Typescript
GraphQL
Apollo Client
React
Next.js
Contentful
Jest
Playwright
Storybook
Node.js
Nest.js
SQL
Terraform
AWS
GitHub Actions
Senior Software Developer
Sep 2021 - Aug 20231 year 11 months
Project Overview

Enterprise business process management and transformation platform enabling organizations to model, analyze, optimize, and manage business processes at scale.

Responsibilities:
  • Developed scalable micro-frontends using React, GraphQL, and Webpack, improving team autonomy and enabling independently developed frontend modules;
  • Configured Kubernetes environments for microservices and APIs, supporting their deployment and operation across the platform;
  • Streamlined CI/CD and deployment workflows using CircleCI and AWS;
  • Ensured code quality through unit testing with Jest and regular code reviews;
  • Participated in technical hiring and code reviews for new engineering team members, contributing to technical evaluation and onboarding.
Project Tech stack:
React
GraphQL
Webpack
CircleCI
AWS
Kubernetes
Jest
Tech Lead
Mar 2019 - Apr 20212 years
Project Overview

Digital coaching platform connecting employees with professional coaches and providing organizations with personalized coaching and development programs at scale.

Responsibilities:
  • Built the digital coaching platform using React, Redux, TypeScript, Tailwind CSS, and Contentful;
  • Designed and developed a global reusable component library with React, following WCAG accessibility standards and supporting consistent UI development across the platform;
  • Implemented backend APIs and services using NestJS and PostgreSQL, contributing across the full application stack;
  • Ensured software quality through automated testing with Jest and Cypress;
  • Led a team of 5 engineers, providing technical guidance, mentorship, and professional development;
  • Partnered with Product Owners to define requirements, technical priorities, and project roadmaps;
  • Managed technical recruitment, improving the engineering hiring and selection process;
  • Evaluated new tools and emerging technologies to identify opportunities for platform and engineering improvements.
Project Tech stack:
React
Redux
Tailwind CSS
Contentful
Typescript
Nest.js
PostgreSQL
Jest
Cypress
Senior Frontend Developer
Sep 2017 - Jan 20191 year 4 months
Project Overview

Online education platform providing free learning opportunities and academic support to students, including refugees and learners facing barriers to higher education.

Responsibilities:
  • Developed the student-facing online learning platform using React, Node.js, Webpack, and Flow;
  • Built responsive user interfaces using SASS and Semantic UI;
  • Developed and integrated GraphQL APIs using GraphQL and Apollo Client to support frontend–backend communication;
  • Ensured application quality through automated testing with Jest and Cypress.
Project Tech stack:
React
Node.js
Webpack
GraphQL
Apollo Client
Jest
Cypress

Education

2007
Computer Science
Engineer's degree

Languages

English
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