azhar.khan

About Azhar Khan

I’m Azhar Khan, a self-taught full-stack engineer from Gorakhpur, India. I built my first website in 2009, before I turned 13, and I’ve shipped more than 100 projects since: client websites, web apps, an Android app, open-source libraries, SaaS products and my own businesses.

How it started

By 2010 I had a freelance page on this domain and was building sites for clients: a college CMS, a rentals listing site, an MLM web app. On the side I made my own things to learn, like a tracer that showed the operator and region of any Indian mobile number, an IPL 2011 results site, and a tutorial blog teaching PHP and MySQL.

Over the next few years the client list grew: a share-trading firm, an SEO agency, a matrimonial site, a bulk SMS web app, and a travel agency, Runway Travels, whose site I have rebuilt five times since 2013. From 2014 to 2016 I ran a small web agency, The Street Buddies, and took work on Upwork.

IIT Kanpur

In the summer of 2017, at 19, I worked as a Student Research Associate in the Electrical Engineering department at IIT Kanpur. I built the websites for the Smart City project, the RTDS lab and the Power System Lab, plus demos that controlled a home’s lights and AC from a web page. Three of those sites still carry my credit.

Nixby Media

After that I started my own company, Nixby Media, in Gorakhpur. We built sites for local clients and ran a summer training programme teaching HTML, CSS, PHP and MySQL. Later came clients in the UK and Australia, a flash-sale tracker app with 10,000+ installs on Google Play, a YouTube channel called Gotham Coding with a full Angular course, and a few open-source PHP libraries.

Now

Since 2021 I’ve worked full-time as a senior full-stack engineer for a US company, remotely, on their publishing platform: the newsroom CMS, Go services and an LLM service that writes automated stories.

After work I build my own products. I write the code, run the servers, and do the SEO and growth work myself, so each one is something I’ve grown from zero:

  • Talentd, a job platform for freshers and engineers in India, with jobs collected from company career pages every day.
  • TalentdPro, entry-level, remote and visa-sponsored jobs in the US.
  • Talentd Hire, where companies post jobs and work through applicants.
  • SEOComet, SEO monitoring software and a Chrome extension.
  • Nixby Media, the company behind them.

Why this site has HackerRank solutions

I took several HackerRank certification tests while preparing for interviews and wrote up the SQL answers in 2022. Those posts ended up helping a lot of students, so I rewrote them in 2026 with every question in each test, tested solutions and proper explanations.

Certifications

Issuer Certification Credential
HackerRank SQL (Basic) b8d32dd8308f
HackerRank SQL (Intermediate) 4fd03ca3ba81
HackerRank Python (Basic) c912555d3929
HackerRank JavaScript (Basic) b7f8877c4466
HackerRank Rest API (Intermediate) 91e7b171205a
HackerRank Angular (Basic) d7de6c3b63e2
HackerRank Angular (Intermediate) 75b71f3a43d2
Microsoft AZ-900: Azure Fundamentals 77AC5D9EF5DA0A9F
Microsoft AI-900: Azure AI Fundamentals 743D7CAC73A1272C
Microsoft DP-900: Azure Data Fundamentals 6BB4289E6A770504
Microsoft PL-900: Power Platform Fundamentals B20C2A576046C4C9
Google Cloud Digital Leader P4ZV49VX2NSQ
Google Google Analytics Certification 787456
Oracle Databases for Developers: Foundations Verify
Codefresh GitOps Fundamentals 62eea3380701ba50e5131038
CertiProf Scrum Foundation Professional (SFPC) 85889627

Elsewhere