Senior Support Engineer
FintechOSBucharest, Romania
Posted March 27, 2026
Full Time
About the Company
FintechOS is the global leader in AI-first modern ProductOps, with a mission to make fintech innovation available to every company.
Job Description
FintechOS is seeking a Senior Support Engineer to join their customer support function. As a key technical pillar, you will own complex technical investigations, serve as an escalation point for the team, and work closely with Platform Engineering and Cloud Operations to resolve critical issues.
Requirements
- Proven experience as a Senior Support Engineer or similar role in a SaaS or fintech environment
- Strong track record of independently resolving complex technical escalations involving application and infrastructure layers
- Hands-on experience with cloud-based environments, particularly Azure
- Experience collaborating cross-functionally with engineering and infrastructure teams
- Familiarity with IT governance, compliance standards and security protocols
- Expert-level SQL knowledge, including complex queries, schema design and performance optimization
- Advanced JavaScript proficiency, with the ability to debug and resolve complex frontend and integration issues
- Solid understanding of HTML and CSS for frontend troubleshooting
- Strong command of Git and GitHub workflows
- Extensive experience with REST API integration and troubleshooting
- Good understanding of system architecture and cloud environments (Azure, AWS or GCP)
- Solid grasp of networking concepts including DNS, firewalls and load balancers
