Full-Stack Software Engineer (Principal)

Friday Systems; Valencia; Presencial; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A dynamic technology company in Valencia is looking for a Senior Software Engineer to own the design and implementation of distributed systems. You will focus on building backend services primarily in Java while contributing to frontend projects using Angular. This role requires strong expertise in cloud platforms and database management. We seek a candidate with over 8 years of development experience, ideally in a senior role, who is passionate about high-quality code and fostering innovation within a small team structure.

Servicios

Salary plus equity

Direct impact in a small team

Zero bureaucracy

Formación

• 8+ years of software engineering experience with at least 5 years in a senior role.
• Strong background in Java and the Spring framework is mandatory.
• Experience developing web applications with Angular.

Responsabilidades

• Design and implement scalable distributed systems for our platform.
• Build backend services primarily in Java; contribute to projects in Python/C++.
• Develop RESTful APIs and web frontends using Angular.

Conocimientos

Java development

Experience with Angular

Cloud platforms (AWS)

Docker

Bash scripting

Python/C++ knowledge

Database management (SQL/NoSQL)

Testing methodologies

Descripción del empleo

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

• Intro / Mutual fit: 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.