Senior Sustaining Engineer - UK

Hyperlayer • London, CA

18h • Onsite

About The Position

As a small, agile company, we thrive on collaboration, innovation, and accountability.

As a Senior Sustaining Engineer on our Production Support team, you’ll be an essential part of maintaining the stability and reliability of our fintech platform's B2B, B2C, and SaaS production environments. You’ll lead the technical response to complex incidents, work closely with cross-functional and global teams to resolve recurring issues, and contribute to the development of customer-requested features.
With a focus on improving software maintainability, system resilience, and meeting contractual SLAs, you’ll mentor engineers across the team and drive continuous improvement in our ITILv4-aligned processes and codebase. This role supports our follow-the-sun 24x7 model, with on-call rotations across UK, US/Canada, and NZ/India teams.
This position operates during standard business hours (Monday–Friday). The role also includes participation in an out‑of-hours on‑call rotation, with additional compensation provided in accordance with company policy. While we collaborate closely with global teams (UK, US/Canada, NZ/India) in a follow‑the-sun model, primary work hours remain aligned to the weekday schedule.

This is an office-based role, with regular in-person collaboration in the office.

Requirements

• 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 (e.g., NATS/JetStream, Redis clustering).
• Strong familiarity with monitoring and incident response tools (e.g., 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 (e.g., 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 (e.g., 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.

Responsibilities

• 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.

Benefits

• A performance-based employee bonus scheme.
• 25 days annual leave plus bank holidays, a day off on your birthday, and an additional day per year of tenure to a maximum of 30.
• Critical illness and life insurance cover.
• AXA PPP Health Insurance, including gym offers.
• Cycle-to-work scheme.
• Referral bonus scheme.
• Workplace nursery scheme

What This Job Offers

• Job Type: Full-time
• Career Level: Senior