[Hiring] Senior Site Reliability Engineer @Crossbeam

Role Description

We are looking for an experienced Senior Site Reliability Engineer to join our highly collaborative and distributed Engineering team. This is a senior individual contributor role with broad technical ownership and significant influence across Engineering. Your mission will be to help design and evolve a platform that is reliable, scalable, secure and efficient, while raising the bar for SRE and cloud-native practices across the organisation.

We are looking for someone who wants to remain deeply hands-on: someone who can design architecture, challenge technical decisions, automate at scale, investigate complex production issues and help other engineers make better technical decisions. You don't need to become a manager to have significant impact here.

• Architect, build and evolve highly available, scalable and secure infrastructure.
• Take ownership of major Platform and Reliability initiatives, from technical assessment and architecture through to production.
• Provide technical leadership and mentorship across the Engineering organisation.
• Manage and continuously improve our core infrastructure around AWS, Kubernetes, Docker and Terraform.
• Work with Helm, FluxCD and Kustomize to improve deployment and infrastructure management.
• Partner closely with development teams to build and improve highly automated CI/CD pipelines, particularly with GitHub Actions.
• Strengthen observability and proactively identify reliability, performance and capacity issues.
• Troubleshoot complex production problems and participate in the on-call rotation, incident response and post-mortem analysis.
• Design and improve our infrastructure security practices and tooling.
• Work across a rich data and database ecosystem including PostgreSQL, StarRocks, OpenSearch, Redis and MongoDB.
• Interact with cloud and distributed systems including Confluent, Snowflake and Temporal.
• Drive automation, architectural reviews and continuous improvements across the platform.
• Build useful technical documentation, including runbooks, playbooks and architecture documentation.

Qualifications

• Roughly 8 to 10+ years of experience in Site Reliability Engineering, Platform Engineering, DevOps or Infrastructure Engineering.
• Deep experience running Kubernetes and Docker in production at scale.
• Strong expertise with AWS and complex cloud architectures.
• Advanced Infrastructure as Code experience, particularly with Terraform.
• Strong understanding of reliability, scalability, observability and production engineering.
• Experience designing and operating modern CI/CD environments, ideally with GitHub Actions.
• Solid experience with production databases, particularly PostgreSQL and/or MongoDB.
• A strong understanding of modern infrastructure security practices.
• The ability to investigate complex problems across application, infrastructure and data layers.
• Experience owning significant infrastructure projects or migrations from design through production, with measurable outcomes.
• Strong communication skills and the ability to influence technical decisions across Engineering.
• Experience mentoring engineers and leading technical initiatives without relying on formal management authority.
• Professional working English and experience working in distributed or international environments.

Requirements

• Comfortable reading, debugging and writing code when needed.
• Experience with languages such as Go, Python, Clojure or JavaScript is particularly relevant.
• Ability to understand unfamiliar systems, go deep when necessary and learn quickly.

Nice to have

• Experience with Helm, FluxCD, Kustomize, StarRocks, OpenSearch, Redis, Confluent, Snowflake, Temporal, CrowdStrike, Tenable One.

Benefits

• Competitive compensation and stock options.
• Health insurance with Alan.
• Swile meal vouchers (10 EUR per working day, 50% covered by Crossbeam).
• Remote work support: 50 EUR monthly allowance, 200 EUR home office budget, and up to 50 EUR per week for a coworking space if you live outside Ile-de-France.
• Annual wellness stipend of 1,000 EUR.
• Collaborative teammates and a culture built on trust and accountability.