Senior Ruby on Rails DevOps Engineer / Freelance / Part-time / On-call
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
How to Apply:
If you're a senior Ruby on Rails DevOps engineer looking for a freelance role with flexibility, and challenge, we’d love to meet you.For a standout application, feel free to reach out directly to anniek@unith.ai, we always appreciate a personal touch.