Jos Dijkstra — Resume

/PROFESSIONAL EXPERIENCE [02 / 06] · 06 ROLES

01 —

Independent Projects

AI Engineer · Niwot, CO

Building dishfinder.io, a searchable aggregator for local restaurant menus, built on a multi-stage ingestion and enrichment pipeline using embeddings, semantic search, and LLM extraction (Python, Node.js, Flutter, PostgreSQL, OpenRouter API) — coming soon
Built pcrassist.com, an AI-oriented assistant for EMS medics (Node.js, Go, PostgreSQL)

CURRENT Jul 2026 — Present

02 —

Proofpoint, Inc

Staff Software Engineer · Niwot, CO (remote)

Architected a custom agent orchestration harness from the ground up and applied it across multiple production agent workflows; built evaluation suites (evals) to catch prompt and skill quality regressions across Satori, Proofpoint's email security AI platform, where customers can write custom skills to interact with their data
Built email and domain analysis agents on the Anthropic Agent SDK, including tools design, skills, and evaluation harnesses, taking them from prototype to production-grade systems
Led AI-powered vulnerability mitigation across 1,000+ projects and 42,000 Jira tickets, delivering a repeatable automated find-and-fix pipeline that kept pace with continuous inbound security vulnerabilities
Created an internal ML/AI technical working group including presentations, tutorials, and tool evaluations, shaping how engineering across the organization adopted AI tooling
Converted a batch-based AWS EMR pipeline into a streaming architecture (S3, SNS, SQS), scaling throughput from 3 to 120 TB/day (40x) while cutting AWS spend 50%
Architected and deployed globally distributed, multi-region data processing pipelines in Go on Redis, PostgreSQL, Redshift, Docker, Kubernetes, and AWS; built the REST APIs in Go and Node.js that served the resulting analytics
Optimized ETL workflows and SQL execution plans across PostgreSQL and Redshift, raising throughput for large-scale data operations, up to 300x for Postgres
Built ML-based logo detection to identify malicious websites impersonating legitimate brands, and patented a companion algorithm for detecting domain lookalikes used in phishing (Hugging Face, local models, vectorization)
Partnered with product and leadership to prototype new features and product lines; mentored junior engineers on design and code quality

Aug 2018 — Jul 2026

03 —

Panopto, Inc

Senior Software Engineer · Niwot, CO (remote)

Optimized SQL Server stored procedures for a video processing platform

Mar 2018 — Aug 2018

04 —

Webroot, Inc

Senior Software Engineer · Broomfield, CO

Led development of an automated testing framework written in C#/SQL covering 30+ OS versions; adopted across multiple departments and ultimately spun out into a dedicated team that owns it today

Mar 2016 — Mar 2018

05 —

10-4

Senior Software Engineer · Boulder, CO

Development of new product features. Improved bulk data load throughput into SQL Server by 400x

Nov 2015 — Jan 2016

06 —

Microsoft

Senior Software Engineer · Boulder, CO

Architected and developed high-performance distributed systems supporting Bing Maps operations across 80,000 cores and 320 PB of storage
Designed a middle-tier service handling 1 billion requests/day, reducing production SQL/DB related failures by 99%

May 2008 — Oct 2015

/SKILLS & CAPABILITIES [03 / 06]

LANGUAGES

Go · Python · JavaScript / Node.js · SQL

AI / ML

Agentic AI · Model Context Protocol (MCP) · Agent orchestration & harnesses · Evaluations (Langfuse) · RAG · Embeddings · Vector databases · Prompt engineering · Spec-driven development · LLM applications · OpenAI / Anthropic / OpenRouter APIs · Generative AI

CLOUD & INFRA

AWS (SQS, S3, Lambda, EC2, EMR, Redshift, Athena, CloudWatch) · Azure · Kubernetes · Helm · Docker · Terraform · Jenkins · CloudBees · Harness · Prometheus · Grafana · CI/CD

DATA

PostgreSQL · Redis · ElastiCache · Redshift · SQL Server

CORE AREAS

Distributed systems · Microservices · API design · Streaming and ETL at scale · Observability · Cloud cost optimization · Technical mentorship