Koen Dercksen

AI engineer & full-stack developer

AI engineer and full-stack developer with a background in academic research and practical implementation. Specialized in natural language processing, information retrieval, and building production-ready applications. I bridge the gap between cutting-edge research and real-world business solutions, focusing on practical implementations that deliver measurable value.

Featured projects

AI brand visibility platform

2026 - Present

Built a multi-tenant SaaS platform that tracks how AI assistants mention and recommend brands across all major LLM providers - visibility tracking for the age of AI answers.

Next.jsFastAPIPostgreSQLRedisLLM APIsStripeMCP
  • Scheduled prompt runs across 10+ AI engines with mention, ranking, competitor and citation analysis
  • AI crawler and AI-referral analytics via a custom tracking script and CDN log ingestion
  • Insights engine turning raw model output into scored, actionable recommendations
  • Full agency multi-tenancy with subscription billing and an OAuth-secured MCP server

Lead enrichment & scoring platform

2026

Built a sales-lead enrichment platform for an investment firm that qualifies companies by combining public registry data, procurement records, news signals and LLM web research into a single lead score.

Next.jsTypeScriptPostgreSQLBullMQLLM APIsDocker
  • Pluggable connector pipeline over public data sources (business registries, insolvency records, procurement data, news)
  • Background job queue that enriches and scores leads automatically
  • LLM-powered web evaluation producing cited sales qualification briefs
  • Review workflow and CRM export for the sales team

Privacy-first lease assessment automation

2026

Automated the first assessment of car-lease applications for a lease provider, with a GDPR privacy-by-design architecture in which LLMs never process identifiable customer data.

PythonLLM APIsMicrosoft GraphSQLiteDocker
  • Pseudonymization vault with access-logged re-identification and an automated PII leak-scan gate
  • Deterministic, auditable decision tree kept separate from LLM extraction
  • SharePoint dossier integration and credit & business registry lookups
  • Admin-editable policy engine with a full change audit trail

Multi-agent environment

2025

Built a custom chat environment with multiple LLM agents for a financial sector client, including a custom API backend.

OpenWebUIPythonFastAPIDockerCoolify
  • Developed custom LLM API layer in Python enabling observability and smart caching
  • Configured and deployed multi-agent chat environment
  • Integrated with client's existing infrastructure

Client monitoring & news classification system

2025

Created an automated monitoring tool for a financial sector client that scrapes news nightly and detects relevant events regarding their client base.

Next.jsLLM APIsSentiment & relevance analysisAutomation
  • Automated nightly news scraping across multiple sources
  • Built intelligent classification system for detecting insolvencies and noteworthy news
  • Reduced manual monitoring time significantly
  • Enabled early detection of client-related risks

Email generation & automation pipelines

2025

Implemented multiple email generation and automation workflows for various clients using modern automation tools and LLMs.

ZapierPythonHubSpotApifyLLM APIs
  • Created automated email workflows integrated with CRM systems
  • Implemented LLM-powered personalized email generation
  • Built scalable automation pipelines for marketing and customer communication

SimpleRad

2023

Developed a web-based viewer for simplified radiology reports as part of PhD research, making medical text more accessible to patients.

PythonReactspacy/transformersMedical ontologies
  • Implemented automated medical text summarization
  • Built entity annotation and recognition system
  • Created entity description search functionality
  • Designed patient-friendly interface for complex medical information

Recent experience

Senior Software Engineer

Plain MedicalNetherlands

2026 - Present

Building AI-assisted radiology software for oncology: deep learning-based CT lesion segmentation, LLM-driven understanding of radiology reports, and privacy-first on-premise AI infrastructure.

Freelance AI engineer & full-stack developer

aviraiNetherlands

2025 - Present

Providing practical AI solutions and full-stack development services for various clients, ranging from complete custom software systems to strategic planning and prototyping.

Chief Technology Officer (CTO)

World Brain ScholarAmsterdam / Paris (Remote)

2024 - Present

Designed, built, and deployed into production Eliza, an AI-powered peer review platform aimed at academic publishers.

Skills

AI & machine learning

Large language models (GPT, Claude, etc.)Natural language processingInformation retrievalMulti-agent systemsRAG systemsPyTorchMedical imaging (DICOM)

Full-stack development

Next.js & ReactSvelteKitTypeScript/JavaScriptPythonFastAPINode.jsRESTful APIsTailwindCSS

DevOps & infrastructure

DockerCI/CD pipelinesLinuxVercelCoolifyCloud deployment

Databases & ORMs

PostgreSQLMongoDBPrismaDrizzleData modelling

Integration & automation

Various LLM APIsZapier/n8nHubSpotEmail automation

Education

PhD in Computer Science

2019 - Present

Radboud UniversityNijmegen, Netherlands

Specializing in natural language processing and information retrieval for medical text simplification

MSc in Data Science

2017 - 2019

Radboud UniversityNijmegen, Netherlands