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Urgent! Full-Stack Software Engineer (Principal) Job Opening In españa – Now Hiring Friday Systems

Full Stack Software Engineer (Principal)



Job description

Full-Stack Software Engineer (Principal)

Friday Systems builds AI that allows industrial robots to adapt to dynamic warehouse environments.

We focus on high-throughput palletizing and related logistic tasks, by building distributed, cloud-native systems where reliability and scalability are non-negotiable.

Tiny team, zero bureaucracy, direct impact, salary + equity.

THE ROLE

Take end-to-end ownership of our platform: Design distributed systems, build backend (80%) and frontend (20%) services, manage cloud infrastructure and ensure quality through testing and reviews.

You’ll collaborate with founders to turn business strategy into technology that scales.

YOU WILL
  • Design, implement, and maintain distributed systems and applications with a strong focus on scalable architecture and design patterns.

  • Build and deploy backend services in Java and contribute to projects in Python or C++ when required.

  • Develop and maintain RESTful APIs and web frontends using Angular.

  • Own infrastructure: Containerize services with Docker, automate operations with Bash scripting, and deploy to Cloud environments (AWS) with CI/CD best practices.

  • Manage databases, ensuring reliability, performance, and proper data modeling.

  • Guarantee software quality by writing comprehensive tests, performing code reviews, and ensuring adherence to best engineering practices.

  • Collaborate with the Leadership Team to ensure product excellence and alignment with business strategy.

    Forge strong relationships with clients, effectively translating their needs into unique technology solutions.

  • Build and nurture a high-performing team by attracting top talent.

    Provide mentorship and leadership to foster a culture of quality and innovation.

YOU HAVE
  • Track record in software engineering, architecture and design patterns.

    8+ years of development experience, with at least 5 years in a senior or lead role.

  • Strong background developing and maintaining applications in Java and Spring framework (this is a must requirement).

    Working knowledge of Python and/or C++ is a strong advantage.

  • Hands‑on experience developing modern web frontends with Angular.

  • Experience with Docker, Bash scripting, Linux environments, and network fundamentals for real‑world production systems.

  • Solid understanding of databases (SQL and NoSQL) and ability to make architectural decisions, balancing performance and scalability.

  • Strong experience with cloud platforms, ideally AWS, including deployment, scaling, and monitoring of services.

  • Experience in testing methodologies (unit, integration, end‑to‑end) and commitment to high‑quality code.

HIRING PROCESS
  • Deep technical session with the Dev.

    Team on your past work (no LeetCode, no homework)
  • Two one‑hour “Traits & Skills” conversations with our two other Co‑founders.

  • Meet the team & offer
Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Technology, Information and Internet

Madrid, Community of Madrid, Spain

#J-18808-Ljbffr


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