Full Stack Engineer

JR Spain; Valladolid; Presencial; EUR 30.000 - 50.000; Jornada completa

Descripción de la vacante

A technology company is seeking a Senior Fullstack Engineer with strong expertise in Ruby on Rails for a freelance, fully remote position. You will be responsible for building and maintaining scalable web applications and developing responsive front-end interfaces. The ideal candidate has over 6 years of experience in fullstack development and is comfortable with AWS and Git workflows. This role offers competitive freelance compensation and schedule flexibility.

Servicios

Freelance contract

Flexible schedule

Competitive compensation

Formación

• 6+ years of experience in fullstack development.
• Strong back-end development skills in Ruby on Rails.
• Comfortable with Git workflows and collaborative development.
• Experienced in writing tests (RSpec, Capybara) and following TDD/BDD practices.
• Knowledge of AWS services like S3, EC2, CloudFront, etc.

Responsabilidades

• Build, maintain, and evolve scalable web applications using Ruby on Rails.
• Develop modern, responsive front-end interfaces with React.
• Participate in code reviews and maintain high standards for testing.

Conocimientos

Fullstack development

Ruby on Rails

Git workflows

TDD/BDD practices

AWS services

RESTful APIs

PostgreSQL

NoSQL databases

Communication skills

Herramientas

RSpec

Capybara

CI/CD tools

Descripción del empleo

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? Senior Fullstack Engineer – Ruby on Rails (Freelance, Remote)

Contract Type: Freelance

Commitment: Full-time

Location: 100% Remote

About the Role

This is a freelance, full-time role with the flexibility to work from anywhere.

What You’ll Be Doing

• Build, maintain, and evolve scalable web applications using Ruby on Rails.
• Develop modern, responsive front-end interfaces with React (or similar), optimizing for performance and usability.
• Participate in code reviews and maintain high standards for testing and code quality.
• Mentor junior engineers and contribute to team-wide knowledge sharing.
• Work closely with design, product, and engineering leads to understand business needs and deliver long-term, scalable solutions.
• Contribute to fostering a collaborative and supportive engineering culture.

Who You Are

• 6+ years of experience in fullstack development.
• Strong back-end development skills in Ruby on Rails.
• Comfortable with Git workflows and collaborative development.
• Experienced in writing tests (RSpec, Capybara) and following TDD/BDD practices.
• Knowledge of AWS services like S3, EC2, CloudFront, etc.
• Experience building and consuming RESTful APIs in SaaS environments.
• Familiar with OOP, SOLID principles, and common design patterns.
• Strong grasp of both relational (PostgreSQL) and NoSQL databases.

Bonus Points For

• Experience with Sidekiq for background processing.
• Familiarity with CI/CD tools (e.g., Capistrano, GitHub Actions).
• Experience working with Agile methodologies.
• Strong interest in psychology, health, or human behavior.
• Native-level Spanish and fluent English.
• Exposure to monitoring/logging tools (Datadog, Sentry, New Relic).
• Strong communication skills and ability to work independently and proactively.
• Experience engaging directly with stakeholders or clients.

What’s Offered

• Freelance contract (long-term potential)
• Full-time hours with schedule flexibility
• Fully remote – work from wherever you do your best work
• Competitive freelance compensation