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Maria PallarésFull Stack DeveloperLisbon, Portugal

I build dependable web products, end to end.

Five years shipping full stack features with React, Next.js, TypeScript and Node.js: data models and APIs through to the interface on top, most recently in fintech and Web3. I care about products that hold up: tested, fast and clear.

Currently Frontend Engineer at Staking Rewards

Portrait of Maria Pallarés
5+ yrs experience

01/About

Product-minded engineer, fluent across the stack.

I'm a Full Stack Developer with 5+ years of experience building web applications in the Web3 and fintech sectors. I specialize in React, Next.js, TypeScript and Node.js, with a strong focus on intuitive user experiences and robust testing strategies.

I've worked with early-stage startups and established companies, from blockchain staking platforms to corporate governance tools and crypto fintech apps. I like owning a feature end to end, from the data model to the last pixel.

Location
Lisbon, Portugal
Experience
5+ years
Currently
Frontend Engineer, Staking Rewards
Email

Skills & tools

Frontend

  • JavaScript
  • React
  • React Native
  • Next.js
  • TypeScript
  • Tailwind CSS
  • Redux
  • Zustand
  • Wagmi
  • Ethers.js

Backend

  • Node.js
  • Express
  • GraphQL
  • REST APIs
  • Solidity
  • Viem
  • Web3

Database

  • PostgreSQL
  • MongoDB
  • Redis
  • MySQL

Tools & DevOps

  • Git
  • CI/CD
  • Vitest
  • Jest
  • Cypress
  • Foundry

02/Projects

Selected work

Side projects and production apps, mostly around payments, wallets and on-chain data.

  • 01Full Stack

    Bitcoin Lightning Network Payment

    Built a complete payment solution leveraging the Bitcoin Lightning Network for fast and low-cost transactions. The backend uses Node.js with Express and Socket.io for real-time payment updates, integrating with LND (Lightning Network Daemon) nodes. The frontend is built with Next.js, React Query for data fetching, and Tailwind CSS for styling, providing a seamless real-time payment experience through WebSocket connections.

    • Next.js
    • React
    • React Query
    • TypeScript
    • Node.js
    • Express
    • Socket.io
    • LND
    • Tailwind CSS
  • 02Full Stack

    Note Taker

    Built a modern full-stack note-taking application where users can securely save and manage their notes. Features user authentication with NextAuth, serverless PostgreSQL database with Neon, and Prisma ORM for type-safe database operations. Deployed on Vercel with a responsive UI built using Tailwind CSS.

    • Next.js
    • React
    • TypeScript
    • NextAuth
    • Prisma
    • Tailwind CSS
    • Neon DB
    • Vercel
  • 05Frontend

    Staking Rewards

    App to find the best yield opportunities across verified providers.

    • React
    • Next.js
    • TypeScript
    • GraphQL
    • Tailwind CSS
    • Vercel
    • Cypress

03/Experience

Where I've worked

Startups and scale-ups in Web3 and fintech, mostly on small teams with a lot of ownership.

  1. Jul 2024 - Present

    2 yrs 3 mos

    Now

    Frontend Engineer · Staking Rewards

    Leading frontend development for Web3 staking platform, focusing on multi-chain integration and user experience optimization.

    • Integrated multiple crypto assets into the staking app by interfacing with internal Web3 SDK and smart contract methods, significantly expanding protocol coverage
    • Successfully migrated entire frontend architecture from Next.js 13 to Next.js 15, improving performance and aligning with latest framework standards
    • Took full ownership of core app sections including the Reward Options Table, improving user engagement and strengthening VSP value proposition
    • Built and maintained comprehensive E2E test coverage using Cypress, leading frontend testing strategy and ensuring long-term stability
    • React
    • Next.js 15
    • GraphQL
    • Tailwind CSS
    • Google Cloud
    • Jest
    • Cypress

  2. Jan 2023 - Jan 2024

    1 yr

    Software Engineer · Fides Technology

    Full-stack development for corporate governance platform, delivering features that increased customer satisfaction and development efficiency.

    • Delivered key features including shareholder import, secret voting, and German commercial register integration, increasing customer satisfaction by 20%
    • Designed and implemented maintainable, reusable components for in-house UI library, saving 100+ hours of development time across teams
    • Created CI/CD pipelines and automation workflows, streamlining deployment processes and reducing manual intervention
    • Led frontend testing initiatives, contributing 40% of company's total frontend and E2E test coverage
    • TypeScript
    • Redux
    • Node.js
    • TypeORM
    • PostgreSQL
    • AWS
    • Jest

  3. Jan 2022 - Jan 2023

    1 yr

    Software Engineer · Nuri GmbH

    Full-stack development for fintech mobile and web applications, implementing new features and improving user experience.

    • Maintained and enhanced native mobile app and web application, delivering consistent feature updates and bug fixes
    • Applied AGILE principles and provided solutions for customer-facing applications and internal tools
    • Collaborated with marketing and design teams to redesign Crypto section in native app, increasing user experience metrics by 20%
    • Implemented automated testing strategies and conducted manual testing to ensure application quality
    • TypeScript
    • React Native
    • GraphQL
    • Apollo Client
    • MongoDB
    • SQL
    • Jest
    • Redis
    • AWS

04/Contact

Let's build something together.

I'm open to hearing about new roles, freelance work and interesting side projects. Whether you have a question or just want to say hi, my inbox is open.

Email

Based in

Lisbon, Portugal

Elsewhere