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Senior Ruby on Rails DevOps Engineer / Freelance / Part-time / On-call, Barcelona
Client:
UNITH
Location:
Barcelona, Spain
Job Category:
Other
EU work permit required:
Yes
Job Views:
2
Posted:
25.04.2025
Expiry Date:
09.06.2025
Job Description:
Location: Amsterdam or Barcelona (Hybrid or Remote)
Company: Track Concepts (Part of UNITH, ASX Listed)
About Us:
Track Concepts is a digital consumer technology company based in Amsterdam, with additional offices in Perth and Barcelona. We are part of UNITH, an ASX-listed AI company, and specialize in subscription-based web applications powered by UNITH’s cutting-edge Digital Human technology.
We serve customers in over 20 languages across content verticals like children’s media, travel, and wellbeing. At the core of our operation is a powerful, custom-built CMS and Direct Carrier Billing (DCB) platform, enabling us to deliver seamless user experiences at scale.
The Role:
We’re looking for a Senior Ruby on Rails DevOps Engineer to join us on a freelance, part-time basis (2–3 days/week) with flexibility to be on-call when needed.
You’ll help strengthen the core of our backend operations and infrastructure — maintaining stability, supporting improvements, and ensuring continuity across our Rails-based platform. You’ll collaborate closely with our senior engineer and gradually take ownership of key areas to provide technical resilience and peace of mind.
This is an ideal role for a senior freelancer who enjoys stepping into established systems, making an impact without the full-time commitment, and being a reliable technical pillar.
Responsibilities:
* Maintain and optimize our Ruby on Rails CMS and DCB payments platform (Rails 7.2)
* Support and manage on-premises infrastructure (FreeBSD)
* Implement and refine CI/CD pipelines (Jenkins, TeamCity)
* Monitor and improve application performance, logs, and alerts (Monit)
* Ensure security best practices across infrastructure and codebase
* Manage MySQL environments, including replication between DB servers
* Collaborate with backend, product, and commercial teams to support features and growth
* Be available on an on-call basis to respond to critical alerts and system issues
Requirements:
* 5+ years of Ruby on Rails engineering experience with DevOps responsibilities
* Proficiency with FreeBSD, Jenkins, GitHub, Puppet, TeamCity, Monit
* Strong experience with MySQL (incl. replication and performance tuning)
* Solid understanding of system architecture, networking, and security
* Comfortable working independently and collaborating remotely
* Availability for part-time engagement and on-call support
* Bonus: Experience with Direct Carrier Billing (DCB)
Why Join Us:
* Be part of an innovative AI-driven product company with international reach
* Flexible freelance setup (retainer + hourly possible)
* Work with a kind, capable, cross-functional team based in Amsterdam, Barcelona & Perth
* Direct impact on a platform used by thousands of daily users
* Future growth potential — both technical and strategic
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