Arjun Pareek

An agent for agentic AI.

[Arjun Pareek @chxngapo]

Results aren't out yet, but the build is done. Interview has happened and I know what I'd fix.
#AgenticAI #RAG #BuildInPublic

[Arjun Pareek @chxngapo]

Built a RAG-based support triage agent in 24 hours for a solo hackathon.
774 docs. 29 real tickets. 3 companies. One output CSV.
Here's what I built and where it broke. 🧵

[Arjun Pareek @chxngapo]

"Works on test cases" and "production-ready" are different bars.
That gap is where the real engineering lives.

[Arjun Pareek @chxngapo]

Try it and give me honest feedback — hope it actually helps with interview prep.

https://t.co/ijFTIlegNR

#InterviewPrep #Placements #TechCareers

[Arjun Pareek @chxngapo]

I built an agentic AI that turns your resume + a job link into a brutally honest interview prep guide.

But the real learning?
Rebuilding LangChain from scratch broke how I understood agents.
Here’s what surprised me 👇

#AgenticAI #LLM #LangChain #BuildInPublic

[Arjun Pareek @chxngapo]

Full resume as one blob → weak, diluted matching.

Split into ~500 character chunks → sharp, focused vectors that map cleanly to JD requirements.

Chunking isn’t a detail.
It’s the whole game.

[Arjun Pareek @chxngapo]

1. Claude doesn't call your tools. Your orchestration layer does. Claude just stops with a tool_use reason and says what it needs. That distinction changes how you think about agents in general.

[Arjun Pareek @chxngapo]

A company researcher, a JD scraper, and a resume matcher.

I tried to replicate what LangChain does manually. That's where everything got interesting.

Things I actually learned:

[Arjun Pareek @chxngapo]

!!!! This is a scheduled tweet !!!!
exactly one year ago today i felt like i had understood how to level up and started making progress according to my standards, i hope im doing better now , hope ive been placed 😭😭😭.

[Arjun Pareek @chxngapo]

@chaktiman Blinkit milk delivery ad on this tweet can't be unseen

[Arjun Pareek @chxngapo]

#100daysbiharplan
#100daysofcodechallenge

[Arjun Pareek @chxngapo]

Day 16/100
Lost my streak but that's how life is, getting back up, thanks to @krishij03 @Wandering_Coder for exactly doing what I came to Twitter looking for.
Solved 3 more.

[Arjun Pareek @chxngapo]

Day 15/100
Solved 3 more.
#100daysofcodechallenge
#100daysbiharplan