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Ramon.

Available for freelance & contract work

Ramon Alvarez

Fullstack Engineer

I build production web applications end-to-end—React/Next.js frontends and NestJS/Python backends—so your product ships reliably and scales.

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About

From UI to APIs to cloud—shipped end to end

Fullstack Software Engineer with 8+ years building production web applications across React/Next.js frontends and NestJS/Python backends. I deliver maintainable systems end-to-end—from UI architecture and testing to API design, integrations, performance, and CI/CD—while collaborating effectively with distributed teams.

  • Full-stack ownership across UI, APIs, and data
  • NestJS, Express, and Flask with REST and GraphQL
  • CI/CD, integrations, performance, and reliability
  • Fluent in English (C2)—smooth collaboration with global teams
End-to-End DeliveryAPI DesignTeam CollaborationProblem Solving

Skills

Technologies I work with daily

Programming Languages

  • JavaScript
  • TypeScript
  • Python
  • Java
  • Dart

Frontend

  • Next.js
  • React
  • Tailwind CSS
  • Material UI
  • Ant Design
  • Redux Toolkit
  • TanStack Query
  • React Hook Form
  • Styled Components
  • Flutter

Testing

  • Jest
  • Vitest
  • React Testing Library
  • Cypress
  • WebdriverIO

Backend & Cloud

  • Node.js
  • NestJS
  • Express.js
  • Flask
  • REST APIs
  • GraphQL
  • MongoDB
  • PostgreSQL
  • AWS
  • AWS Amplify

Tools

  • Git
  • CI/CD
  • Storybook
  • Single SPA

Experience

8+ years building production software

  1. Senior Fullstack Engineer

    3+ years

    DSPOT

    July 2022 – Present

    • Develop and maintain scalable React and Next.js applications using TypeScript, Redux Toolkit, TanStack Query, and Tailwind CSS
    • Build and maintain backend services with NestJS (GraphQL/REST), including authentication, authorization, validation, and background jobs
    • Own AWS delivery workflows: CI/CD pipelines, environment promotion, monitoring, and production troubleshooting
    • Improve reliability and maintainability through automated testing with Jest and Vitest
    Next.jsReactTypeScriptTailwind CSSTanStack QueryRedux ToolkitNestJSGraphQLAWSJestVitest

  2. Fullstack Engineer

    1 year 9 months

    DATAMART

    November 2020 – July 2022

    • Developed micro-frontend applications using React, TypeScript, and Single SPA architecture
    • Built and maintained reusable React component libraries with Storybook to improve consistency and scalability
    • Integrated AWS APIs and GraphQL services into frontend applications for enterprise workflows
    • Implemented backend services with Express.js supporting internal tools, authentication flows, and integrations
    ReactTypeScriptSingle SPAStorybookGraphQLAWSExpress.js

  3. Frontend Engineer

    8 months

    NEXXTWAY

    April 2020 – November 2020

    • Developed React Rainbow open-source component library with Styled Components
    • Implemented unit, integration, and E2E tests with Jest, Cypress, and WebdriverIO
    ReactStyled ComponentsJestCypressWebdriverIO

  4. IT Specialist

    2 years 9 months

    DESOFT

    November 2018 – July 2021

    • Led full software development lifecycle using Flutter and Odoo (custom modules and integrations)
    • Extended Odoo backends in Python: models, workflows, reporting, and external system integrations
    • Automated business processes and improved operational consistency across deployments
    FlutterDartPythonOdoo

Projects

Selected work

A snapshot of products and platforms I have designed, built, and shipped—including personal SaaS and work for employers.

Screenshot of Import Ready at Personal

Personal

Import Ready

SaaS for retail inventory teams to validate CSV/Excel product imports, bulk-fix errors across entire files (including rows not on screen), and export cleaned or Shopify-ready catalogs—with server-side validation for 50k+ rows.

Next.jsTypeScriptNestJSTanStack QueryPostgreSQL
Screenshot of Enterprise Web Platform at DSPOT

DSPOT

Enterprise Web Platform

Production React/Next.js frontend with NestJS APIs, CI/CD, and full test coverage across the stack.

Next.jsTypeScriptNestJSGraphQLAWSTanStack QueryVitest
Screenshot of Micro-Frontend Ecosystem at DATAMART

DATAMART

Micro-Frontend Ecosystem

Micro frontends with Single SPA, shared Storybook library, GraphQL integrations, and AWS-backed enterprise workflows.

ReactSingle SPAGraphQLStorybookAWS
Screenshot of React Rainbow Component Library at NEXXTWAY

NEXXTWAY

React Rainbow Component Library

Reusable UI component library with Storybook docs and comprehensive unit, integration, and E2E tests.

ReactStyled ComponentsJestCypress

Education & Credentials

Background that supports the craft

Bachelor of Science, Computer Science Engineering

University of Informatic Sciences (2018)

Thesis: Computer system for decision-making in software product evaluation using Fuzzy Logic and Soft Computing methodology

HackerRank Software Engineer Certificate

Verify certificate →

HackerRank Frontend Developer (React) Certificate

Verify certificate →

EF SET English Certificate

C2 Proficient (82/100)

Verify certificate →

Spanish

Native

English

Proficient (C2)

“Ramon has been an invaluable asset to our team, consistently delivering clean, efficient solutions. His technical expertise, collaborative spirit, and commitment to excellence make him an exceptional team member.”

— DSpot Team LeadFull recommendation available on LinkedIn

Contact

Let's build something together

Looking for a fullstack engineer for your next product, API work, or greenfield app? Reach out—I typically respond within 24 hours.

rgah2107@gmail.com+375292345085Minsk, Belarus
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