UNIX Application Support Engineer

Referment is partnering with a leading pan-European trading platform to find a talented Unix Application Support Engineer to join their growing operations team in Madrid. This is a fantastic opportunity to work in a high-performance, real-time trading environment, supporting critical systems that power financial markets across Europe and beyond. You will be part of a highly skilled team responsible for supporting both production and test trading platforms, ensuring stability, performance, and reliability in a fast-paced environment. This role is dedicated to application support, providing a great opportunity for those looking to apply their Unix skills to complex financial software systems. Please note that this is a specialized application support position rather than a pure system administration or cybersecurity role. This role is particularly exciting as the business expands into the US market, meaning you will play a key part in supporting international trading activity. To support these global markets, applicants must be available to work a late shift pattern from 16:00 to 00:00 CET. We operate a hybrid working model, requiring team members to attend the office 3 days a week. Monitoring trading platforms and responding to incidents Troubleshooting, recovery, and root cause analysis Automating tasks and reporting (Bash, Python, Perl) Supporting application deployments and change processes Analysing Unix system performance Collaborating with Ops, QA, Dev, and Market Control teams Expert-level Unix/Linux command line experience is essential Advanced scripting skills in Bash, Python, and/or Perl, with the ability to demonstrate strong scripting logic and constructs Availability to work late shifts (16:00 to 00:00 CET) A proactive mindset with a clear focus on application support over system administration or cybersecurity Commitment to a hybrid working model, attending the office 3 days a week Experience with monitoring tools and system performance Fluent written and spoken English is essential Networking knowledge (TCP/IP, UDP, Multicast) and the ability to explain fundamental protocol differences Experience with monitoring tools like Nagios, Opsview, or Zabbix Spanish language skills (useful for local team interaction) Basic SQL or web technologies Performance-related bonus Hybrid working (3 days in the office) No sponsorship or relocation assistance is available for this position. If you are passionate about Application Support, automation, and high-availability environments, and want to work in a role where your impact is immediate and visible, we would love to hear from you. #