Janno Teelem is a seasoned Staff Software Engineer based in Tallinn with over two decades of hands-on experience building consumer and enterprise systems, from creating the original Skype for Mac to shaping Twilio's SDKs and service reliability. He blends deep client-side expertise in Swift/Objective-C and modern TypeScript/GraphQL stacks with backend, SRE and DevOps practice—designing resilient microservices, autoscaling, and robust CI/CD pipelines. Previously he led engineering and product teams (VP of Engineering, CPO) at data- and trading-focused startups, scaling teams and moving organisations from outsourced to agile in-house development. His background in AI (MSc) and an MBA gives him a rare mix of technical breadth and product/strategic perspective. Notably, he has repeatedly transitioned between individual contributor and leadership roles, demonstrating both low-level systems craft and high-level architectural decision-making.
8 years of coding experience
18 years of employment as a software developer
Master of Business Administration (M.B.A.), Master of Business Administration (M.B.A.) at Estonian Business School
BSc Computer and System Engineering, BSc Computer and System Engineering at Tallinn University of Technology
MSc Artificial Intelligence (Complex Adaptive Systems), MSc Artificial Intelligence (Complex Adaptive Systems) at Chalmers University of Technology
An interactive git visualization to challenge and educate!
Contributions:2 PRs, 9 pushes, 3 branches in 7 days
interactiveeducategit-interactivevisualization
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Janno Teelem - Staff Software Engineer at Twilio Inc.