Overview
G+D hace más segura la vida de miles de millones de personas en todo el mundo. Creamos confianza en la era digital con tecnología de seguridad integrada en tres segmentos: Seguridad Digital, Plataformas Financieras y Tecnología Monetaria. Somos un grupo tecnológico internacional y una empresa familiar tradicional con más de 14,000 empleados en 40 países. Crear Confianza es nuestro camino hacia el éxito. La confianza es la base de nuestra colaboración en G+D. We are seeking a Backend Software Developer with +3 years experience to join our team and focus on the Offline Distribution component. You'll work hands-on with advanced Golang, distributed systems, and modern cloud technologies, supporting our ongoing growth and commitment to security, scalability, and reliability.
Responsibilities
- Contribute to the development, testing, and maintenance of backend services under guidance, gradually taking ownership of well-scoped tasks or small features.
- Implement and consume RESTful APIs following existing designs, conventions, and documentation.
- Work with relational databases (such as PostgreSQL) to read, write, and query data using established patterns or libraries.
- Support messaging or asynchronous workflows (for example, using message queues) as part of existing systems.
- Follow secure coding practices and project guidelines, addressing feedback from code reviews and security checks.
- Use git for version control, following team branching strategies and contributing via pull requests.
- Participate in CI/CD workflows by ensuring code builds, tests pass, and deployment requirements are met.
- Assist in troubleshooting, debugging, and basic performance analysis with support from more experienced developers.
- Actively engage in code reviews, testing activities (unit, integration, system), and team discussions to improve code quality and shared understanding.
Required Skills
- Basic to intermediate proficiency in at least one backend programming language (e.g., Golang), with an understanding of core concepts such as functions, data structures, interfaces, and basic concurrency.
- Familiarity with RESTful API concepts and HTTP fundamentals.
- Basic experience working with relational databases (such as PostgreSQL), including writing simple queries and understanding schemas.
- Working knowledge of git and common version control workflows (branching, commits, pull requests).
- Ability to read existing codebases, follow established patterns, and implement changes safely.
- Strong communication skills, including asking questions, documenting work, and explaining problems when blocked.
Recommended Skills
- Growing understanding of concurrency, performance considerations, and memory usage in backend systems.
- Awareness of secure development practices, including authentication, authorization, and OWASP principles.
- Basic exposure to containerization technologies (such as Docker) and development environments.
- Familiarity with monitoring, logging, or debugging tools used by the team.
- Experience writing basic automated tests and understanding different test types.
- Interest in learning about CI/CD pipelines, automation, and deployment processes.
Nice to Have
- Exposure to cloud platforms (such as Azure) or managed services.
- Basic knowledge of infrastructure concepts or infrastructure-as-code tools (e.g., Terraform, Helm).
- Awareness of encryption, certificates, or secure communication fundamentals.
- Experience collaborating with or supporting other junior developers, interns, or new joiners.
- Demonstrated curiosity, initiative, and willingness to improve code quality and team practices over time.
Onboarding Plan – Your First 90 Days
- First 30 Days: Set up development environment, complete security and code review training, shadow senior developers, run builds/tests, and learn product architecture. Participate in Kanban flow and introductory TDD exercises. Join pair programming and understand CI/E2E testing pipelines.
- Days 31-60: Make your first contributions with guidance, join workshops on secure coding (OWASP), practice TDD, participate in pair programming, use E2E tests, contribute to CI/CD, take ownership of a Kanban ticket, and write feature/test documentation.
- Days 61-90: Deliver features end-to-end, patch a medium-level security issue, lead or join security retrospectives, optimize part of the CI/CD workflow, ensure secure feature delivery, refine Kanban/process metrics for backend releases, mentor newcomers, and document lessons learned and improvements.
What's great about working with us
- Culture and diversity: Equal Opportunity Employer and LGBT+ friendly.
- Team: Shape our engineering culture and work with a passionate, mission-driven team in a diverse, international environment.
- Global Collaboration: Work with stakeholders around the globe.
- Impactful Work: Participate in and shape a global lighthouse project in the domain of digital currencies.
- Career Development: Continuous training, coaching, and talent development programs.
- Social Benefits: Versátil compensation (transport tickets, training, private insurance).
- Own canteen: Breakfast and lunch service with a variety of menus at a reasonable price.
- Work-Life Balance: Versátil working hours with option for remote work (Mon–Thu 8:30 – 17:30 and Fri 8:30 – 15:30; 3 days remote).
- Location: El Prat de Llobregat. Easy access by private or public transport.
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