Open to opportunities

Josef User

@josefuser

Message

I am a senior software engineer building AI-driven platforms, scalable backends, and multilingual NLP solutions.

Sweden

Message

What I'm looking for

I seek a senior engineering role building production-grade AI platforms and scalable backends within a collaborative, product-driven team that values security, scalability, and measurable impact.

I am a Senior Software Engineer specializing in AI-driven platforms, scalable backends, and multilingual text analytics. Over a decade I have designed multi-LLM architectures, enterprise search platforms, and adaptive learning systems that convert complex ideas into secure, high-performance products.

At Ulex and Sana Labs I orchestrated multi-LLM integrations and engineered search and retrieval pipelines that improved platform usage by 30%, cut average search response times by 45%, accelerated data throughput by 40%, and improved query speed by 35%. I conceived the Meetings add-on and led backend, security, and compliance efforts (ISO27001/SOC2 readiness, GDPR) while mentoring engineers and authoring API documentation to reduce onboarding time.

I work cross-functionally to deliver product-driven, production-grade AI solutions—focusing on scalability, security, and measurable business impact—and I enjoy rapidly prototyping and operationalizing research into reliable systems.

Experience

Work history, roles, and key accomplishments

Current

Senior AI Engineer

Current

Ulex

Jan 2025 - Present (7 months)

Orchestrated integration of multiple LLMs into Ulex's AI-agnostic platform enabling vendor-agnostic switching and driving a 30% increase in platform usage within the first quarter. Engineered draft generation, advanced search and ingestion pipelines that cut average search response times by 45% and reduced manual meeting note-taking by over 50%.

Python TypeScript RAG Vector Databases Elasticsearch Kubernetes API Design

Senior Software Engineer

Sana Labs

Mar 2021 - Nov 2024 (3 years 8 months)

Architected and maintained scalable AI-driven backends and data pipelines that enabled 50% faster time-to-proficiency and 3× longer knowledge retention. Built enterprise search and recommendation systems (Elasticsearch, transformer ranking) that increased training content engagement 275% and streamlined onboarding workflows, delivering a $1.4M annual benefit.

TypeScript Spring Boot Elasticsearch Airflow Temporal GCP Kubernetes BERT

Software Engineer

Nytt IQ

Nov 2018 - Feb 2021 (2 years 3 months)

Led end-to-end backend development and deployed predictive maintenance systems that increased machine productivity by 7% and delivered an 11% production boost for a subcontractor within four weeks. Implemented anomaly detection models identifying failures up to seven production cycles early, enabling proactive maintenance and operational insights.

Python Java Predictive Maintenance Anomaly Detection REST APIs Sensor Integration Machine Learning

AI Developer

Gavagai

May 2014 - Jan 2018 (3 years 8 months)

Contributed to Gavagai Explorer, architecting ingestion pipelines and real-time semantic processing that enabled sentiment and topic extraction across 40+ languages. Optimized a self-learning lexicon and scalable REST APIs to improve trend detection and integration with client applications.

NLP Python REST APIs Machine Learning Word Space Models