harish@portfolio:~$
harish@portfolio : ~ $ whoami
Harishkumar Pillai
Go Backend Engineer | DNS Security | LLMOps
Focus: CoreDNS plugins, DNS threat detection, observability
Also: GPU-aware inference systems (RAG, caching, streaming, ONNX serving)
Location: India
Status: Open to impactful security + AI infrastructure work
$ cat focus_areas.log
■
CoreDNS Extensions
- ▸ Inline policy engine for zone-level access control
- ▸ DNS exfiltration detection via query pattern analysis
- ▸ Performance tuning: pprof profiling + dnsperf benchmarks
■
LLMOps Pipeline
- ▸ Inference latency optimization (vLLM, caching strategies)
- ▸ Cost tracking: tokens/request → $/month projections
- ▸ Observability: Prometheus metrics + Grafana dashboards
$ ls projects/
Portfolio Projects
Curated projects showcasing production-grade Go systems, DNS/security work, and LLMOps pipelines.
DNS Exfiltration Detection (Portfolio Version)
Inline feature extraction + model scoring (ONNX) + blocking.
Planned
A portfolio-grade version of DNS exfil detection with measurable latency impact, evaluation metrics, and deployment docs. Production version completed at Akamai.
CoreDNSDNS SecurityONNX RuntimeGo
Inline DNS Policy Engine (Public Writeup)
Local threat intel lookups for REFUSED/BLOCK/BYPASS.
Planned
Fast in-process lookups for large threat intel datasets with benchmarks and pprof-driven tuning. Production version completed at Akamai; public writeup pending.
LevelDBCoreDNSPerformanceGo
Threat Detection & Analysis Tools
IP/port scanning, network monitoring, CnC exploration, TCP proxy.
Completed
Tools for IP/port scanning, network speed monitoring, CnC server exploration, and TCP proxy with traffic logging. Built for security research and network analysis.
GolangCybersecurityNetworking
Real Time DNS Monitoring
Monitor DNS traffic and report frequently visited domains.
Completed
Go tool to monitor DNS traffic and report frequently visited domains; insights into domain usage patterns and potential security threats.
GoDNSgin-gonicgopacketPCAP
E-Commerce Product Review Scraper
Flask web app for product search and Flipkart review scraping.
Archived
Flask web app for product search, scraping Flipkart reviews, displaying results in a table; deployed using AWS services.
PythonFlaskAWSMongoDB
$ git log --author=pillaiharish --since='6 months' --pretty=format:'%h %s'
GitHub Activity (Auto-synced)
pillaiharish 11 followers 41 public repos Focus: DNS + Security
⭐ Top Starred
LLM-AI-Agents-Learning-Journey
This repository is a continuously evolving collection of blogs, hands-on code, and research on Large Language Models (LLMs), AI Agents, tokenization techniques, AI security risks, and optimization strategies. Whether you're a beginner exploring how LLMs process text or an advanced researcher working on AI security and adversarial attacks.
4
Jupyter Notebook
network-packet-analyser
A DNS packet monitor tool which monitors the DNS domains from a list and displays the frequency of visits on a laptop.
3
Go 2 forks
file-upload-server-golang
Clone this repository to enable multi-device file uploads to a web app on a laptop over Wi-Fi using HTTP.
3
Go 1 forks
threat-detection-analysis-tools
This repo contains tools for threat detection and analysis of various malwares or any such suspicious activities.
1
Go 3 forks
pytest-allure-github-actions
This repo will have pytest run with github actions where allure reporting is stored as an artifact for the runs
1
Python
Exercise
Some practice codes
1
Jupyter Notebook
🔄 Recently Updated
pillaiharish
LLM-AI-Agents-Learning-Journey
This repository is a continuously evolving collection of blogs, hands-on code, and research on Large Language Models (LLMs), AI Agents, tokenization techniques, AI security risks, and optimization strategies. Whether you're a beginner exploring how LLMs process text or an advanced researcher working on AI security and adversarial attacks.
4
Jupyter Notebook
benchmark-ai
This repo contains tools for benchmarking AI models with various input data
Python
protegoapi-mcp
ProtegoAPI-MCP is a full-stack learning platform where developers practice fixing OWASP API Top-10 vulnerabilities by editing real code.
Go
network-packet-analyser
A DNS packet monitor tool which monitors the DNS domains from a list and displays the frequency of visits on a laptop.
3
Go 2 forks
golang-codes
Go