Jos Dijkstra

Summary

Software Engineer and Architect with 15+ years of experience leading backend, distributed systems, and cloud infrastructure projects. Proficient in Golang, C++, C#, and cloud technologies (AWS, Kubernetes, Redis). Proven track record of delivering scalable solutions, improving system performance, mentoring teams, and driving technical excellence.

Skills

Languages: Golang, C, C++, C#, Python, JavaScript (NodeJS)

Cloud & Infrastructure: AWS, Azure, Docker, Kubernetes, Helm, Jenkins, CI/CD

Databases: PostgreSQL, Redis, Elasticache, Redshift, SQL Server

Tools: Git, Harness, Terraform, Prometheus, OpenAI/Anthropic APIs

Core Areas: Distributed Systems, Microservices, API Development, Scalability, Agentic AI, RAG, Cloud Cost Optimization, Observability, Mentorship

Professional Experience

Proofpoint, Inc — Senior Staff Software Engineer, Technical Lead
August 2018 – Current

• Led conversion of batch-based AWS EMR pipeline (2.5TB/day) into a scalable streaming pipeine (35TB/day), cutting AWS costs by 50%.
• Architected global, multi-region data pipelines with Golang, Redis, Docker, and Kubernetes.
• Built scalable APIs in Golang and NodeJS for analytics delivery.
• Invented patent-pending algorithm to detect phishing via domain lookalikes.
• Championed ML/AI internal group; led tool evaluations, presentations, integrations.
• Recipient of Outstanding Technical Achievement Award (2020).
• Mentored interns and junior engineers, promoting code quality and growth.

Panopto, Inc — Senior Software Engineer
March 2018 – August 2018

• Optimized LINQ-generated SQL for better performance and scalability.

Webroot, Inc — Senior Software Engineer
March 2016 – March 2018

• Developed C/C++ endpoint security software at kernel/user levels.
• Built fully automated test framework for 30+ OS versions, running 24/7/365.

Microsoft / Uber Technologies — Senior Software Engineer
May 2008 – October 2015

• Engineered distributed systems for Bing Maps and Uber (80k cores, 320PB storage).
• Designed middle-tier handling 1B requests/day, reducing SQL failures by 99%.

Earlier Career — Aztek Networks, Ericsson Wireless, EuroLabs

• Focused on telecom, protocol development, and embedded systems.

Side Projects

PCRAssist.com (Founder/Engineer)

Built SaaS app to help EMTs/paramedics create PCRs. Developed React frontend, Golang backend, PostgreSQL DB; integrated OpenAI/Anthropic APIs for AI-driven narrative generation.

puptransfur.org (Founder/Engineer)

Powerful tools for dog transfer coordination nationwide. Connecting dogs in need with loving families across the country.

Interests

Exploring ML, AI, RAG, agentic AI architectures. Passionate about SaaS innovation in healthcare and cybersecurity.

Education

Master's in Mathematics — University of Groningen, The Netherlands

Thesis: Numerical Simulation of Fluid Flow in 3D (CFD)