About
Julien Avezou
Software Engineer · Toronto, Canada
Thinking engineer building systems, products, and workflows for the AI era. Previous experience in Fintech.
Highlights
- Key architect and developer of a system at Klarna to proactively verify millions of customers, leading to improved UX and huge cost savings
- Built and launched multiple applications independently
- Focused on reflection systems and engineering judgment in the age of AI
Technical Skills
Technologies and tooling I am comfortable with
JavaScript / TypeScriptReact / React Native / Next.jsNode.jsSupabasePostgreSQLRedisVercelAWSDockerKubernetesJenkinsTerraformRuby / Ruby on RailsKafkaReduxGitSentryAI workflows / LLM tooling
Experience
My career path
Senior Software Engineer
Klarna · 2021 — 2025
- Key architect and developer of a system at Klarna to proactively verify millions of customers, leading to improved UX and huge cost savings
- Built critical flows to allow customers to safely recover access to their Klarna Balance account (remote dynamic linking, letter send outs)
- Helped design and implement a new onboarding flow for the Klarna Balance product, increasing the product’s conversion rates by 4%
Software Engineer - Freelance
JLG · 2020 — 2021
- Conceived and developed a planning tool web application contracted for a top architecture firm in Belgium
- Worked in a team of 3 devs in order to respect the roadmap planned out in terms of feature releases
Projects
Selected work · built & shipped
Languages
Communication & global experience
English · NativeFrench · NativeItalian · ConversationalSpanish · ConversationalGerman · Conversational
Writing
Putting my thoughts into words
Ship AI in your engineering stack without the chaos
Key learnings and tips to build applications with LLMs.
Why Learning Basic Robotics Made Me a Better Software Engineer in the Age of AI
Sharing my thoughts on how learning robotics has been valuable for my developer journey, especially in this age of AI.
See all writing here.
Hobbies & Fun Facts
My life outside of work
- Building in public (products + writing)
- Running (ran Paris and Berlin Marathons)
- Reading
- Scuba Diving
- Kayaked around Corsica in 30 days
Get in Touch
Open to conversations
If something here resonates with you — whether it's engineering, reflection systems, AI workflows, or building thoughtful products — feel free to reach out.