Site Reliability Engineer - Golang - Java - Financial Services

• Act as a primary responder in a 24x7 on-call rotation for high-priority incidents, ensuring fast acknowledgment (MTTA targets) and resolution to minimize customer impact in our event-driven fintech platform
• Conduct root-cause analysis (RCA) for complex issues, collaborating closely with development teams to implement robust solutions and deliver RCAs within 5 business days for Sev1/Sev2 incidents.
• Lead the development and deployment of small, customer-facing features and improvements, ensuring alignment with business needs and system requirements while adhering to change success rates =99%.
• Work with mid- and junior-level engineers, providing guidance in incident response, troubleshooting best practices, and coding standards within a global rota, including handovers and knowledge sharing via tools like Rootly.
• Take ownership of software maintainability initiatives, identifying and implementing optimizations, and enhancing system performance to achieve availability =99.99% (four nines).
• Participate in regular post-incident reviews (blameless retros), documenting lessons learned and suggesting improvements to incident response processes and runbooks for our technology stack.
• Collaborate with the infrastructure team to monitor system health and proactively identify areas for improvement in stability and efficiency using tools like Datadog, Rootly, and CloudWatch/AppDynamics.

• Bachelor's degree in computer science, Engineering, or a related field.
• Minimum of 5+ years of experience in sustaining engineering, DevOps, or software engineering with a focus on incident response and system reliability in fintech or regulated environments.
• Advanced troubleshooting skills and experience with Golang (preferred), Java, or similar languages, plus familiarity with event-driven architectures (eg, NATS/JetStream, Redis clustering).
• Strong familiarity with monitoring and incident response tools (eg, Datadog, Rootly) and experience implementing improvements in similar systems to meet SLAs like MTTA/MTTR.
• Proven ability to conduct in-depth root-cause analysis and implement long-term fixes in compliance-aware settings (eg, GDPR/FCA-aligned).
• Experience mentoring or guiding mid-level engineers, with a focus on knowledge sharing and process improvements in geo-distributed teams.
• Awareness of ITILv4 principles (eg, incident/change management) and tools like Rootly for unified workflows.
• Strong communication skills and the ability to work collaboratively with both technical and non-technical teams across time zones.

Desirable

• Previous experience in a start-up/scale-up fintech.
• Exposure to ISO 20022, Open Banking APIs, or card scheme integrations.
• Experience with infrastructure-as-code (Terraform, CloudFormation).
• Background in software engineering (eg, Java, Golang, Kotlin, Node.js, Python).
• Experience supporting sales or business development teams with technical input.

London - £60k - £75k + Benefits, Pension Full Time Posted by: Rothstein Recruitment Ltd Posted: Monday, 3 August 2026 Applicants must be eligible to work in the specified location