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Juan NúñezJN

Juan Núñez

Senior Software Engineer | Tech Lead | Typescript

€360/day
Madrid, ES
8-15 years

Average response time: 1 hour

About Juan

Full Stack Developer | Typescript | React | NodeJs

Domains where I have been working:
- SaaS
- ECommerce
- OTT
- News/Media

Key technologies and frameworks I use:
Typescript, React, NodeJs, Redux, Next.js, NestJs, Jest, SAAS (CSS), Tailwind, Git, RabbitMQ, Docker, GitHub, GH Actions, AWS.

Design patterns and principles I like to be aligned with:
- DDD
- SOLID
- TDD
- Hexagonal architecture
- Twelve-factor app principles

Type of projects I have addressed:
- SaaS multitenant backend (NestJs with microservices)
- Custom local OAuth2.0 backend module (NestJs with microservices)
- E-commerce backend (NodeJs + Express with Typescript)
- E-commerce app with (Next.js)
- Event manager SaaS application (React + Redux)
- OTT platform (Next.js)
  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Tailor Hub
    Senior Software Engineer | Technical Lead
    SOFTWARE PUBLISHING
    March 2024 - Today (2 years and 3 months)
    Madrid, Spain
    Seasoned Senior Software Engineer & Technical Lead with extensive experience architecting and delivering scalable, event-driven e-commerce platforms using Domain-Driven Design (DDD) and Hexagonal Architecture. Skilled in leading cross-functional teams through all stages of the SDLC — from domain modeling and infrastructure automation to frontend integration and CI/CD optimization.

    Expert in NestJS, TypeORM, PostgreSQL, Next.js and AWS ecosystems, with a proven track record designing modular, maintainable, and testable systems across multiple bounded contexts (Identity & Access, Designer, Engagement, Rewards, Notifications, Moderation, etc.).

    Combines deep technical acumen with strong product and UX awareness — bridging engineering, design, and business goals to create robust, user-centric solutions. Passionate about clean architecture, SOLID principles, event sourcing, and developer experience (DX), while mentoring teams to adopt best practices in code quality, CI/CD, and infrastructure-as-code (Terraform, GitHub Actions).
    NestJs DDD Next.js Technical project management Technical Lead
  • J - Desarrollo Aplicaciones Web
    Full Stack Developer & Founder
    SOFTWARE PUBLISHING
    January 2016 - Today (10 years and 5 months)
    Madrid, Spain
    Working as a Senior Full Stack Web Developer addressing a wide variety of tasks like:
    - Design and Develop scalable React components
    - Design and Develop REST and GraphQL APIs
    - Define architectural and design patterns
    - Setting projects to improve team productivity and CI-CD
    - Performance and SEO optimizations
    - Meeting with teams and clients to define features, align expectations and organize work
    - Addressing refinement sessions
    - Code review and pair programming
    React NestJs redux Domain Driven Design Hexagonal Architecture TDD CI/CD Typescript TailwindCSS Node.js Docker Jest GraphQL API REST Agile Github Actions GitHub
  • Grupo Tecnoebro Automoción
    Software developer
    January 2015 - December 2015 (11 months)
    Software Developer specialized in Frontend Engineering and UI/UX Design, with a strong focus on building visually refined, accessible, and performant web interfaces. Experienced in turning complex concepts into intuitive user experiences by combining design thinking with solid technical implementation.
    Frontend Developer JavaScript Node.js

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Education

  • Grado: Marketing e investigación de mercados
    Universidad de Zaragoza
    2015
    Grado: Marketing e investigación de mercados, Marketing
  • Executive Master en Marketing Digital, Analítica y UX
    IEBS
    2017
    Executive Master en Marketing Digital, Analítica y UX

Certifications

Skill set

Categories