Site Reliability Engineer - Cloudflare & Ingress - Core Infrastructure

Kraken.Com

United KingdomHybrid$100K - $130K

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BUILDING THE FUTURE OF OPEN FINANCE Payward - the parent company behind Kraken, NinjaTrader, Breakout, xStocks, Payward Services and CF Benchmarks - has spent the last 15 years building one of the most modern and globally accessible financial infrastructure platforms in the industry, built to advance an open, global financial system. Before you apply, we encourage you to explore our culture page https://www.kraken.com/culture to understand what drives us and how we work. THE TEAM Founded in 2011, Kraken is one of the world's longest-standing crypto platforms, trusted by over 10 million individuals and institutions across the globe. It offers spot trading, margin, futures, staking, and OTC services, with products built for both individual investors and institutional clients. Join our engineering team as a Senior Site Reliability Engineer focused on the edge and ingress layer that fronts our platform — the systems that stand between the public internet and our services. You will own the design, hardening, and operation of our Cloudflare edge configuration and our ingress/reverse-proxy stack, ensuring traffic reaches our applications securely, reliably, and at scale. As a member of the SRE team, you will guarantee the availability, performance, low-latency, security, and cost efficiency of our edge and ingress infrastructure. This is an excellent opportunity for an engineer who is passionate about edge networking, application security, load balancing, and building self-service automation for dozens of engineering teams operating mission-critical financial services. You will work closely with Security Engineers, NetOps, Platform teams, and Software Engineers to improve operational excellence for how traffic enters and moves through our environment, while mentoring other engineers and raising the bar on edge and ingress reliability practices. THE OPPORTUNITY - Own and evolve our Cloudflare edge configuration across Accounts and Zones, including WAF rules, custom Rulesets, Bot Protection, and Rate Limiting policies. - Design and maintain DNS architecture in Cloudflare, including zone delegation, record hygiene, and change management at scale. - Implement and operate mTLS with Authenticated Origin Pulls, private PKIs, and manage the certificate lifecycle (issuance, rotation, renewal) across Cloudflare and origin infrastructure. - Build and support self-service automation for edge configuration using Terraform, enabling application teams to safely manage their own WAF, DNS, and routing changes. - Develop and operate solutions using Cloudflare Workers and R2 Storage to extend edge logic and reduce origin load. - Own the ingress and reverse-proxy layer, including HAProxy OSS and HAProxy Fusion (enterprise), covering TLS termination, mTLS, TCP passthrough, proxy-protocol handling, HTTP/HTTPs/FIX protocols. - Design and manage reverse proxy topologies and load balancing across AWS Load Balancers, AWS Direct Connect, AWS Private Link and similar solutions for hybrid on-premises/cloud connectivity. - Build, operate, and improve Kubernetes ingress controllers, and design/write Kubernetes Operators and CRDs to automate ingress and routing configuration as code. - Operate and extend service mesh (Istio) capabilities, including traffic management, mTLS between services, and observability of east-west traffic. - Partner with Security to defend against OWASP-class attack vectors, implement credential-stuffing protection, DDoS prevention, and manage ACLs across the edge and ingress layers. - Implement robust monitoring and alerting for edge, DNS, and ingress health to proactively detect anomalies, latency regressions, and abuse patterns. - Lead incident response for edge/ingress-related incidents and participate in on-call rotations, including postmortems and runbook development. - Document architecture, standards, and best practices for the edge and ingress layer, and mentor other engineers on Cloudflare and ingress operations. - Act as the primary subject matter expert for Cloudflare, ingress, and edge networking, providing weekly support to engineering teams through office hours, support requests, architecture guidance, technical coaching, and hands-on assistance to unblock projects and enable successful adoption of platform capabilities. WHAT YOU BRING - 3+ years of experience as a Site Reliability Engineer, Cloudflare Engineer, Platform/Infrastructure Engineer, or similar role, with meaningful ownership of edge, CDN, or ingress systems. - Hands-on production experience with Cloudflare, including WAF/Rulesets, Bot Protection, Rate Limiting, DNS, Zones/Accounts administration, and certificate management. - Production experience operating HAProxy (OSS and/or Fusion) or comparable reverse proxies, including TLS termination, TCP passthrough, and proxy-protocol. - Experience with AWS networking primitives: Direct Connect, Load Balancers (ALB/NLB), and VPC routing/connectivity patterns. - Working knowledge of service mesh technology (Istio or equivalent) and its role in traffic management and mTLS. - Experience operating Cloudflare Workers and R2 Storage in production for edge compute or storage offload use cases. - Solid understanding of web application security: OWASP Top 10-style attack vectors, credential stuffing, DDoS mitigation strategies, and ACL design. - Proficiency with Infrastructure as Code, particularly Terraform and Atlantis, and comfort building self-service automation for other engineering teams. - Solid scripting/programming ability (bash plus at least one of Python or Golang) and comfort using AI tools and agents (e.g., Claude) to accelerate delivery. - Familiarity with observability stacks such as Grafana, VictoriaMetrics, Tempo, Splunk or similar tools for edge and network telemetry. - Strong problem-solving skills and the ability to troubleshoot complex, distributed, and adversarial network traffic issues under pressure. - Solid understanding of HTTP semantics in the browser context: caching behaviour, cross-origin resource sharing (CORS), and cookie/session management. NICE TO HAVES - Cloudflare One VPN management experience. - On-premises colocation with clients for ultra-low-latency environments. - Experience troubleshooting low-level Linux performance bottlenecks, NUMA pinning, packet drops. - Strong Kubernetes experience, including deploying and troubleshooting ingress controllers, and hands-on experience building or maintaining Kubernetes Operators/CRDs. - Experience operating Kubernetes Ingress Controllers at scale across AWS and on-premises environments. - Background in highly regulated or financial services environments where change management and audit trails are critical. Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis. Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution. We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance. OUR COMMITMENT Payward is powered by people from around the world and we celebrate the diverse talents, backgrounds, contributions, and unique perspectives that everyone brings to the table. We hire based on merit, seeking out people with the right abilities, knowledge, and skills for the job. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgeable about crypto. We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. These assessments evaluate competencies relevant to the role and are applied consistently across candidates for similar positions. Results are considered alongside experience and interviews, and are not the sole basis for any employment decision. As an equal opportunity employer, we don't tolerate discrimination or harassment of any kind, whether based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status, or any other protected characteristic as outlined by federal, state, or local laws. Stay connected Follow us on Twitter https://twitter.com/krakenfx Learn on the Kraken Blog https://blog.kraken.com/#:~:text=Enter%20your%20email%20address Connect on LinkedIn https://www.linkedin.com/company/kraken-exchange/ Candidate Privacy Notice https://www.kraken.com/legal/candidate-privacy-notice

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