Senior Backend Engineer (Ruby/Golang) - SaaS & Security

Loyal Guru; Barcelona; On-site; EUR 65,000 - 90,000; Full time

Benefits offered by this job

Career plan and professional growth

Healthy snacks at the office

Beers at the office: Free crafted beer

Half-paid health insurance

25 days of paid vacation

English lessons

Team building every quarter

Pizza sprint

Crossfit and Yoga lessons

Job summary

Loyal Guru is hiring a Software Engineer in Barcelona to help build and scale our SaaS platform. You will work in an agile squad, shaping architecture and delivering robust backend services using Ruby or Golang.

You’ll write secure, clean code and participate in reviews, while collaborating with QA and Product Owners to ensure top quality. We value cloud experience (Google Cloud), REST API proficiency, and strong SQL skills with PostgreSQL.

Qualifications

• Experience building SaaS products in a fast-paced environment.
• Proficiency with Ruby or Golang and modern backend patterns.
• Strong knowledge of RESTful API design and security considerations.
• Experience with cloud services, especially Google Cloud.
• Familiarity with PostgreSQL and data modeling.
• Experience with test-driven development and clean code practices.

Responsibilities

• Build high-quality, innovative SaaS features in a constantly evolving environment.
• Design, implement, and scale backend solutions using Ruby or Golang.
• Collaborate with QA, Product Owners, and other squads to ensure quality and reliability.
• Participate in code reviews and pull requests to improve product quality.
• Leverage AI tools to assist backend and infrastructure development while maintaining security and reliability.

Skills

Google Cloud

REST APIs

SQL / PostgreSQL

Serverless technologies

TDD / Clean Code

Software engineering in product公司

Git & command line

OO languages (Ruby or Golang)

Tools

Git

Command line

PostgreSQL

Google Cloud Platform

Serverless

Job description

Loyal Guru is hiring a Software Engineer in Barcelona to help build and scale our SaaS platform. You will work in an agile squad, shaping architecture and delivering robust backend services using Ruby or Golang.

You’ll write secure, clean code and participate in reviews, while collaborating with QA and Product Owners to ensure top quality. We value cloud experience (Google Cloud), REST API proficiency, and strong SQL skills with PostgreSQL.