Junior Backend Developer

• 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., * 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.

• Culture and diversity: Join a people-oriented environment with different nationalities and a great team spirit, flat hierarchies (everyone speaks to everyone). Equal Opportunity Employer and LGBT+ friendly.
• Team: An opportunity to shape our engineering culture and work with a passionate, mission-driven team. Collaboration with a diverse and very international team of outstanding people.
• Global Collaboration: Work collaboratively with stakeholders around the globe.
• Impactful Work: You will have the opportunity to participate in and shape a global lighthouse project in the domain of digital currencies.
• Career Development: Benefit from continuous training, coaching, and talent development programs.
• Social Benefits: Flexible compensation (transport tickets, training, private insurance), etc.
• Own canteen: Take a break with our breakfast and lunch service: choose between a wide range of menus, salad desk, and sandwiches service. Nicely priced!
• Work-Life Balance: Flexible working hours with the option for remote work (Mon-Thu 8:30 - 17:30 and Fri 8:30 - 15:30; 3 days of remote work).
• Location: El Prat de Llobregat. Easy communication by private transport or public transport: Bus 88, 110, PR4 and Metro L10S (ZAL/Riu Vell).

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. Hemos sido un socio confiable para nuestros clientes durante más de 170 años con nuestras soluciones innovadoras para SecurityTech! 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. Somos el socio confiable para todos los desafíos resultantes del Internet de las cosas. Ofrecemos un completo portafolio de conectividad para operadores de redes móviles, fabricantes de automóviles, empresas tecnológicas como fabricantes de chips y módulos, así como proveedores de transporte y logística. Nuestro portafolio incluye soluciones altamente seguras en el área de conectividad e IoT, desde SIM clásicas, eSIM e iSIM, hasta los sistemas operativos integrados asociados y el manejo del ciclo de vida, pasando por servicios de conectividad global y soluciones IoT. ¿Quieres dar forma activamente a la transformación digital con nosotros?, Somos una empresa comprometida con la igualdad de oportunidades. Fomentamos la diversidad en todas sus formas y cultivamos un entorno de trabajo inclusivo, libre de prejuicios, discriminación y acoso, donde todas las personas empleadas se sientan valoradas y parte de la comunidad. Damos la bienvenida a todas las candidaturas, independientemente de su sexo, edad, raza, origen étnico, procedencia social y cultural, religión, discapacidad u orientación sexual.