Alexander Klen
Website • Email • Github • Linked In
About Me
- Staff Software Developer - Full-Stack Coding, Software Architecture, Tech Lead, Project Management
- Experience designing, building, and scaling distributed web applications in multiple industries and technologies
- Significant experience with latest LLM AI models and tools within AI-native B2C+B2B products and for development
- Hobbyist coder with interests in AI, distributed systems, personal finance
Experience
Perplexity - Member of Technical Staff
Remote - 2025-present
- Expanding Perplexity's abilities on the AI Agent Infrastructure team
Invisible - Staff Software Engineer
Remote - 2024-present
- Zero to one on multiple AI-native products
- Cutting-edge and novel techniques: hierarchical web automation agents and live-LLM-coded generative UI
- AI product reliability evals, integrations for deep research, payments, and voice chat
Cloud Kitchens - Staff Software Engineer, Senior Software Engineer
Remote - 2020-2024
- Tech Lead for Cloud Retail - team of 8 engineers. Software architect, project manager, scrum master
- Designed and built inventory platform and online retail applications for experimental business vertical. Concept to launch in major global markets in 6 months
- Led retail integrations with Amazon Today and internal engineering platform teams
- Collaboration with product & design, general manager & strategy, facility support & operations leads
- Professional development mentor. Presented multiple projects to CEO and engineering organization
- Leveraged modern microservice architecture, gRPC, message queues, GraphQL, Cockroach DB, Elasticsearch, Trino
- Earned promotion to staff engineer
Google - Senior Software Engineer, Software Engineer
Seattle and Remote - 2015-2020
- Payments Tech Lead for Google Domains (Registrar)
- Led team in major payments system upgrade, country and currency launches, fraud prevention improvements, payment stats and auditing pipeline
- Completed projects for automatic TLS cert provisioning, Google Business and Sites, registry and TLD integrations.
- Earned two promotions to senior engineer. Presented on payments, authentication, security. Mentor
Various - Software Engineering Intern
California - 2011-2014, 2 years cumulative
- Google: Adwords MapReduce data migration pipelines, real-time Ad logs processing regression test improvements
- Facebook: Crowdsourcing in Graph Search, contextual Wikipedia snippets, photo map search visualization
- LinkedIn: iOS UI redesign, employee dogfooding versioning system, node.js APIs and HTML5 iPad application
- Salesforce: Rypple/Success Cloud performance review app - full-stack development on OKR and email features
Education
University of Waterloo - Bachelor of Software Engineering
Waterloo, ON - 2010-2015
- With Distinction, Dean's Honours List, 3.96 overall GPA (cumulative 93.15%)