We’re hiring a

Senior Backend Engineer to design, build, and scale high-performance backend systems that protect governments and critical infrastructures.

About the company

Fast-growing cybersecurity company redefining digital security standards in the B2G (Business to Government) space. They tackle complex, high-stakes challenges with serious engineering and a clear purpose: building technology that contributes to a safer world.

Location

Barcelona (100% on-site, by design) | Poblenou

Salary range

up to 85k (depending on seniority)

What you’ll do

Design, develop, and maintain backend services using modern technologies

Work with SQL and NoSQL databases

Develop and deploy containerized applications using Docker

Implement and maintain microservices architecture

Improve and debug an already running system to ensure stability and performance

Optimize system performance and troubleshoot production issues

Collaborate with Frontend developers, DevOps, and other stakeholders to deliver high-quality solutions

Ensure high-quality code standards and enhance code quality through testing and peer reviews

Take ownership of end-to-end development processes, including requirement analysis, design, implementation, testing, and deployment

What we’re looking for

5+ years of experience in backend development,



with a proven track record of delivering high-quality, scalable solutions

Strong, hands-on programming skills with a focus on Python

Experience with internal OS development

Familiarity with DevOps practices and on-prem infrastructure is a plus. Experience with microservices architecture

Strong understanding of system architecture principles, with the ability to design and maintain efficient, scalable backend systems

Proficiency in both SQL and NoSQL databases (e.g., PostgreSQL, MongoDB)

Hands‑on experience with Docker for containerization

Working knowledge of Linux OS

Ability to work independently and take ownership of tasks from start to finish

What’s in it for you?

Private health insurance

Versátil compensation plan (fully covered meal vouchers)

Fully stocked kitchen (coffee, organic fruit, snacks, drinks)

Team-building activities and continuous learning opportunities

If the technology sounds interesting, great.

But if what really motivates you is building systems that move beyond pure software and directly improve people’s lives, working closely with product teams, and solving meaningful problems at scale, this could be the right next step.

📌 Senior Backend Engineer | Python | Barcelona (Madrid)
🏢 Talent-R
📍 Madrid