Jonas Petersen
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Jonas

Lead Software Engineer

Timeløn

750 - 900 kr./t

Bio

Tech Lead building cloud-native platforms & AI (RAG) systems at The LEGO Group. TypeScript. Full-stack, AWS, DevOps.

Jonas er en freelance Lead Software Engineer fra Vejle

Ingen portefølje at se her

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I’m a Tech Lead and full-stack engineer specializing in TypeScript, cloud-native architecture, and AI-driven systems. I operate at the intersection of technology strategy and hands-on engineering—turning complex enterprise challenges into scalable, secure, and maintainable solutions.


At The LEGO Group, I led a 10+ engineer product team responsible for the architecture and lifecycle of 25+ employee-facing workplace applications. I define long-term technical strategy, drive architectural standards, and ensure scalability, security, and cost-efficiency across our application portfolio. I work closely with product and business leadership to translate strategic initiatives into clear technical direction and executable roadmaps.


My background spans building multi-tenant cloud-native platforms from scratch, designing REST and event-driven systems, and leading Infrastructure-as-Code initiatives across AWS and Azure. I’ve worked across frontend, backend, mobile, and DevOps—giving me strong end-to-end ownership and system-level thinking.

I’m particularly passionate about AI-powered products. I initiated and prototyped an enterprise multi-modal AI assistant (RAG + tool orchestration) that evolved into LEGO Me (2025), helping shape how AI integrates into internal workflows at scale.


Beyond architecture, I care deeply about growing teams and engineering culture. I’ve helped scale teams from 2 to 10+ engineers, mentored developers, and established sustainable engineering practices that balance speed with long-term quality.


Interests:

AI & RAG systems · Cloud-native platforms · Distributed systems · Developer experience · Modern full-stack architecture · Engineering leadership

Always open to conversations about AI systems, platform architecture, and building high-performing engineering teams.

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