Member of Technical Staff (Platform Leaning)

The role

You will design, prototype, and ship product features end to end. You will also handle platform and infrastructure work including networking, multi-cloud deployments, and observability. You will build agentic tooling to automate operational tasks.

What you will do

• Design and implement new functionality end to end
• Rapidly prototype new capabilities
• Pair with designers and other engineers
• Gather requirements from customers and stakeholders
• Lean into infrastructure work including AWS, Kubernetes, and CI/CD
• Contribute to complex networking and deployment scenarios
• Improve developer experience and platform ergonomics
• Partner with Infosec team for compliance
• Build or deploy agentic tooling for autonomous diagnostics
• Build agents for dependency upgrades and automated runbooks

Required qualifications

• Proven experience as a Software Engineer
• Hands-on experience deploying and operating real systems (Kubernetes, cloud environments, infrastructure-as-code, CI/CD)
• Solid systems and networking fundamentals (DNS, TLS, VPCs, firewalls)
• Demonstrated use of AI coding tools and agents
• Comfortable with fast-paced, high-autonomy environments

Nice to have

• TypeScript/Node preferred
• Self-host things for fun (homelab, Kubernetes cluster)
• Production AWS/EKS experience
• Hands-on work with private connectivity, VPNs, or multi-region architectures
• Experience producing infrastructure evidence for ISO 27001 or SOC 2
• Thrived in an early-stage startup before
• A cool project to show (GitHub links welcome)

Benefits

• Market-benchmarked salaries and EMI share options
• 25 days of annual leave
• UK public holidays
• Two paid volunteering days each year
• Vitality medical insurance (includes dental, optical and mental health)
• 5% employer pension matched contribution
• Company-paid life insurance (four times annual salary)
• Enhanced Maternity, Parental and Adoption Leave from day one
• £1,000 per year for learning and development
• Financial support for eligible team members commuting from outside Greater London
• Cycle to Work scheme
• Twice a year week-long offsites

Before you apply

• Introductory Call
• Take-Home Exercise
• On-site Technical Session
• Culture Conversation
• Leadership Discussion

About the company

Tessl is a fast-growing Series A startup building infrastructure for AI-powered software factories. It was founded by Guy Podjarny, previously founder of Snyk.