Junior Backend Developer – Payments & Crypto (Remote)

Fidesmo; Madrid; Híbrido; EUR 40.000 - 65.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Restaurant tickets

25 days annual paid vacation

Flexible hours and remote work

Central Madrid office

Descripción de la vacante

Fidesmo invites you to join its Madrid R&D center as a backend engineer. You will build services that connect to payment networks, transit authorities, and secure chips, learning cryptography and secure key handling in a highly concurrent environment.

You will participate in CI/DevOps, design and implementation reviews, and agile planning. The team encourages experimentation with new tech and growth toward ownership of subsystems and contributions across libraries.

Formación

• University degree in computer science, maths, physics, or engineering.
• Comfortable with abstract thinking and complexity.
• Working knowledge of at least one programming language.
• Some server-side coding experience.
• enjoys collaborative, small-team work with mutual code review.
• Comfortable working in English day-to-day.
• Nice to have: Functional programming knowledge.
• Nice to have: Interest in cryptography and security tech.

Responsabilidades

• Backend services connecting to payment networks, transit authorities, and secure chips.
• Learn to implement cryptography correctly and manage keys securely in a highly concurrent environment.
• Participate in CI/DevOps and Agile processes; join design/implementation discussions, planning, and code reviews.
• Grow to own one or more subsystems and contribute to other projects/libraries.

Conocimientos

Programming language knowledge

Server-side coding

Collaborative teamwork

English communication

Cryptography interest

Educación

University degree in computer science, maths, physics, or engineering

Descripción del empleo

Fidesmo invites you to join its Madrid R&D center as a backend engineer. You will build services that connect to payment networks, transit authorities, and secure chips, learning cryptography and secure key handling in a highly concurrent environment.

You will participate in CI/DevOps, design and implementation reviews, and agile planning. The team encourages experimentation with new tech and growth toward ownership of subsystems and contributions across libraries.