Open to opportunities

Stefan Hagdahl

@stefanhagdahl

Software engineer and consultant at Timeloop AB, building IKEA platforms for recommendations, UGC, and ML predictions.

At IKEA, I built platforms for user-generated content, edge-first recommendations, and ML prediction serving. The user-generated content platform supports reviews, ratings, and photos across 50+ markets, and the prediction platform serves personalization across IKEA's digital channels.

Through Timeloop AB, I work hands-on across software and infrastructure, from Go and Rust services to edge systems. I also introduced agentic engineering practices at IKEA and built DORC Assistant, a team tool with streaming chat, persistent memory, and integrations with the systems we use.

Experience

Work history, roles, and key accomplishments

Current

Founding Engineer

Current

Ingka Digital (IKEA)

Jan 2024 - Present (2 years 10 months)

Founding engineer on the Decision Orchestration Platform (DORC), a centralized ML prediction serving platform. Led design of protobuf API schema, developed gRPC core service in Go and Rust, built high-throughput event router, and designed Cloudflare Zero Trust edge layer.

Go Rust gRPC Protobuf BigTable Cloudflare Zero Trust Product Owner Agentic Engineering

Current

Independent Consultant

Current

Timeloop AB

Jan 2022 - Present (4 years 10 months)

Independent consultancy operating since 2022, providing senior software engineering and technical leadership services.

Core Engineer

Ingka Digital (IKEA)

Jan 2020 - Dec 2023 (3 years 11 months)

Core engineer on the team that built IKEA's UGC platform from scratch, serving 50+ markets. Led design of vendor-agnostic content moderation pipeline and built Visual UGC system end-to-end.

Preact Go Airflow Pub Sub Cloud Tasks Optimizely A B Testing

Consultant

Jan 2017 - Dec 2022 (5 years 11 months)

Consultant at M4, working on various client engagements including embedded ML testing and AWS cloud environments.

Software Developer / Architect

Ericsson

Jan 2008 - Dec 2017 (9 years 11 months)

Created TGF, a test provisioning platform serving 1,500 developers across 2,000 test machines worldwide. Took on architect and product owner roles, redesigned TGF 2.0 for cloud-based virtualized hardware.

Erlang Scala Akka Python scikit learn Cloud Computing Virtualization