Principal Customer Engineer, Majors

About the role

Cloudflare is hiring a Principal Customer Engineer for its Majors segment, based in Switzerland. The Customer Engineer is the core driver of the technical go-to-market strategy: a trusted technical advisor and primary architect of the customer journey, guiding enterprise clients from pre-sales technical validation through onboarding, deployment architecture and full-lifecycle expansion. The role sits in the GTM organization, reports to a Customer Engineering Leader and carries a variable quota tied to new business and account growth.

Key responsibilities

• Partner with Account Executives on technical discovery, PoC and technical validation plans, and deliver presentations, diagrams and demos
• Oversee technical onboarding and implementation, acting as the executive and engineering contact and designing migration and onboarding blueprints
• Monitor customer health and telemetry, resolve integration bottlenecks and drive expansion
• Lead technical Quarterly Business Reviews and identify cross-sell and up-sell opportunities
• Act as a trusted advisor through onboarding, maturity, renewal and expansion, and use AI agents and LLMs to automate routine tasks
• Work with the Enablement team to define and teach SOPs, architectural best practices and technical guides

Required profile

• Experience in a customer-facing technical role such as Solutions Engineering, Customer Engineering, Sales Engineering, Technical Account Management or Forward Deployed Engineering
• Ability to design and explain complex enterprise network and security architectures
• Proven track record in a quota-carrying, revenue-aligned environment with knowledge of SaaS metrics and enterprise sales cycles
• Excellent presentation and stakeholder management skills
• Depth in at least four of the technical areas listed below

Required skills

• Internet fundamentals: OSI model, BGP, DNS, HTTP(S), SSL/TLS
• Security: WAF, Bot Management, Zero Trust, SASE
• Performance: caching, HTTP/2, TLS 1.3
• AI proficiency: prompt engineering, LLMs, workflow automation
• Coding/scripting: Python, JavaScript, Bash, Lua, Go

The role may require travel of up to 20-50% to customer meetings, conferences and events.