Application Support Engineer

Archax City Of London, England, United Kingdom

Archax operates a centralized crypto exchange alongside an FCA‑regulated Multilateral Trading Facility (MTF). In addition to these core services, Archax offers a comprehensive suite of solutions, including primary markets, OTC trading, and custody services for crypto assets, FIAT currencies, and securities. The platform also specializes in tokenization services, bridging traditional and digital finance.

Archax’ s vision is to create a fully digital capital markets ecosystem that seamlessly integrates traditional financial infrastructure with blockchain and distributed ledger technologies (DLT).

We're looking for a technically curious, hands‑on Application Support Engineer to join our growing technology team at a leading digital asset firm. You'll work with developers and the business to support complex, high‑performance systems used for trading, market data, custody, OTC, regulatory reporting, and compliance. This is a hands‑on role that gives you the freedom to dig into issues – including down to the code.

• Monitor and operate production systems supporting both regulated and unregulated trading activities
• Investigate and resolve data‑related alerts and system issues, including code‑level debugging when necessary
• Collaborate with developers to troubleshoot complex issues and drive long‑term improvements
• Provide first‑to‑third line support to internal and external parties across the firm, escalating and working with Developers as required.
• Help onboard new team members, customers, and applications into our support model
• Continuously improve monitoring, runbooks, and operational processes
• Get involved in automation, scripting, and helping us scale the platform as we grow

• Experience supporting and troubleshooting high‑performance or real‑time systems (finance, trading, or similar environments ideal)
• Strong Linux skills – you’re comfortable navigating and debugging from the command line.
• Good understanding of market data, order flows and related protocols
• Strong analytical and problem‑solving mindset, and being able to design and implement solutions, both tactical and strategic.
• Familiarity with Git and modern tooling around CI/CD
• SQL proficiency – from writing queries to basic database operations
• Experience with AWS Cloud, or other similar providers
• Experience with Prometheus, Grafana and RabbitMQ

• Backend Tech:
  Kotlin, Nodejs, Type Script, RabbitMQ
• IaaS: AWS
• Databases:
  MySQL
• Monitoring:
  Prometheus, Grafana, Paessler PRTG, Cloud Watch, MS Security XDR, Open Search

Archax is an equal opportunities employer and places a high value on diversity and inclusion. We do not discriminate based on any attribute.