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Senior Backend Engineer (Ruby on Rails)

On-site in Barcelona·Added 3 days ago

Titan OS

20 open roles

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Overview

Requirements

Have the right to work in Spain
Titan OS doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Work on-site in Barcelona
No relocation package mentioned.
Have 7+ years of experience
Senior-level role.

Pay & benefits

What you'll get

Competitive compensation
Private health insurance
Friendly, diverse, and international work environment
Opportunity to work outside of your comfort zone and develop professionally in an exciting and fast-growing CTV industry.
Change the future of TV! A unique opportunity to join a well-funded, high-growth company in the early stages to help shape a product/business that will impact millions.

Requirements

What we're looking for

+7 years of professional experience as a Backend Engineer, working on large-scale systems.
Proficiency in Ruby on Rails.
Strong knowledge of database systems (SQL and NoSQL), with experience in designing efficient data architectures.
Experience with cloud platforms like AWS, GCP, or Azure, and familiarity with containerization tools like Docker and Kubernetes.
Solid understanding of RESTful API design and development, including experience integrating third-party services.
A strong focus on performance optimization, scalability, and security.
Excellent problem-solving skills and attention to detail.
A Bachelor's degree in Computer Science, Software Engineering, or a related field is preferred but not required.
Strong communicator and fluent in English

The role

We are looking for a Senior Backend Engineer with a deep understanding of server-side technologies and a passion for building highly scalable systems that power industry-leading applications. You will be responsible for designing, developing, and maintaining the backend infrastructure that drives our products and services, ensuring they are secure, reliable, and performant.

You'll be instrumental in architecting and delivering robust solutions that power the core functionality of our business. This role is for someone who thrives on solving complex problems and is driven by the desire to contribute to a high-impact product every day.

What you'll do

Designing and developing highly scalable backend services and APIs to support front-end applications and third-party integrations.
Building and maintaining databases, ensuring data is stored securely and can be accessed efficiently.
Collaborating with front-end developers, DevOps, and product teams to define and implement new features.
Optimising the performance and reliability of server-side code to ensure seamless user experiences.
Ensuring the security of backend systems through the implementation of best practices and security protocols.
Writing clean, maintainable, and well-documented code, adhering to industry standards and team best practices.
Monitoring and troubleshooting production systems, ensuring high availability and rapid response to issues.
Participating in code reviews and contributing to the continuous improvement of development processes.

Hiring process

If you're excited about this position, don't hesitate to apply. We're waiting for you to join us! And if you want to know more about us, follow us on LinkedIn!

About Titan OS

Titan OS is an advertising technology (AdTech) company that develops a connected TV (CTV) operating system and platform, enabling advertisers to deliver and manage campaigns on smart TVs. The company operates at the intersection of software and media, providing a full-stack solution that includes device firmware, a backend platform, and data-driven advertising tools.

In Spain, Titan OS is headquartered in Barcelona, which serves as the company's main European hub. The Barcelona office is a key engineering center, housing a significant portion of the company's product and engineering teams, making it a relevant destination for international tech professionals. The work culture is described as fast-paced and product-focused, with a strong emphasis on technical excellence and ownership, and the team communicates in English, making it accessible for international hires.

Industry: AdTech
Founded: 2012
Employees: 100–500
Headquarters: Barcelona, Spain
In Spain: Barcelona
Website: titanos.tv

Good to know if you are moving

Barcelona is the company's main engineering hub outside of its founding market, with a large concentration of product and engineering roles.
The company's working language is English, making it accessible for international professionals without requiring Spanish fluency.
The company offers a modern tech stack (Go, Ruby on Rails, React) and the opportunity to work on connected TV (CTV) firmware and backend systems.
The Barcelona office is located in a prime tech hub with a strong international talent pool and a high quality of life.
The company is at the forefront of the CTV/AdTech space, a rapidly growing sector within digital advertising.

In their own words

About the company & team

Titan Operating System S.L. (Titan OS), the Barcelona-based technology, entertainment, and advertising company, is looking for you!

At TitanOS, we live by three core values:

Make things happen - We take ownership, move fast, and deliver impact.
No ego - We collaborate with respect and humility to reach shared goals.
Show genuine passion - We love what we do and never stop learning.

Culture and environment are at the heart of our ethos. If the above resonates with you, keep reading because we believe you could be a perfect addition to our incredible team!

All open roles at Titan OS