Full Stack Engineer (Java/Kotlin + React) | Up to 75k | Hybrid (Madrid)

About the job
Location:
Madrid (Hybrid) Seniority:
Senior
Position:
FULLSTACK ENGINEER
We are looking for our client a leading international travel-tech company scaling our engineering hub in Madrid. We’re transforming the travel experience by building innovative, reliable, and scalable software used by millions of travelers worldwide.
About the Role
We are looking for a
Senior Fullstack Engineer (Java/Kotlin + React)
who is highly motivated, collaborative, and passionate about building impactful projects. If you enjoy working across the stack—from frontend to backend and infrastructure—and want to influence architecture, mentor peers, and improve performance at scale, this role is for you.
As a Fullstack Engineer, you will:
Write high-quality, maintainable, and testable code in
Java, Kotlin, TypeScript, Python , or other modern stacks. Build
frontend web applications, backend services, APIs, and data flows . Participate in
cross-functional Agile teams , from planning to production. Provide
technical mentorship , conduct code reviews, and engage in architectural discussions. Continuously improve systems for
scalability, performance, and resilience . Collaborate with stakeholders to
shape product direction and make architecture decisions . Required Skills & Tech Stack
We value curiosity, creativity, and a passion for building great products. Experience or interest in the following is a plus:
Strong programming skills in
modern languages
(Java, Kotlin, Python, JavaScript, etc.) Experience with frontend frameworks like
React, Vue, or Angular Understanding of
backend technologies and RESTful APIs Knowledge of
cloud platforms
(AWS, GCP, Azure) Familiarity with
SQL and NoSQL databases Solid understanding of
computer science fundamentals
(data structures, algorithms, system design) Passion for
clean, maintainable code
and modern practices ( CI/CD, TDD, DevOps ) Excellent
communication and collaboration skills A drive to
learn and improve , both yourself and the systems you build
What We Offer
Join one of the
fastest-growing travel-tech organizations , changing how software products are built
Be part of an
amazing multicultural community of tech experts
Highly competitive compensation package up to 55k-75k
Medical insurance
Hybrid work setup in Madrid Opportunities to
build reliable, scalable systems that empower millions of travelers A team culture that encourages
knowledge sharing, learning, celebrating wins, and aiming higher
If you’re ready to take on an exciting challenge and grow with a disruptive travel-tech company, we want to hear from you!