About Rahul Biswas

Rahul Biswas is an SEO, AEO and GEO expert in Kolkata with 8 years of experience in 360° digital marketing. He has led marketing for companies in India, the USA and Canada, from Woncomp Tech Solutions and Kyptronix to Folks Digital and Crystal Renovations, before founding WebKitLab Technologies (OPC) Pvt. Ltd., a healthcare marketing agency in Newtown.
His work covers on‑page, off‑page and technical SEO, AI SEO, Answer Engine Optimization and Generative Engine Optimization, alongside Google Ads ($1.4M managed, 2.4× ROI) and Meta Ads ($773K managed, 2.1× ROI). He builds PHP websites with vibe coding and prompt engineering, designs ad creatives, and specialises in dental marketing, clinic website development and healthcare marketing in Kolkata.
His signature promise is a 15‑day keyword ranking guarantee: WebKitLab.com itself reached Google’s top 5 within 15 days. This cinematic, streaming‑style portfolio was vibe coded and prompt engineered, and is optimised to rank on Google too.
Frequently asked questions
Who is Rahul Biswas?
Rahul Biswas is a digital marketer based in Newtown, Kolkata with 8 years of experience in SEO, AEO, GEO, Google Ads, Meta Ads and PHP web development. He is the founder of WebKitLab Technologies (OPC) Pvt. Ltd., a healthcare marketing agency.
Can you really rank a keyword on Google in 15 days?
Yes, for keywords assessed as achievable. WebKitLab.com reached the top 5 on Google within 15 days for keywords like “dental marketing in Kolkata” and “healthcare marketing in Kolkata”. Every project starts with a keyword assessment, and the 15‑day guarantee applies to the keywords agreed in that assessment.
What are AEO and GEO?
AEO (Answer Engine Optimization) structures content so it is chosen as the direct answer in featured snippets, voice search and AI answers. GEO (Generative Engine Optimization) helps a brand get cited and recommended by generative AI tools such as ChatGPT, Gemini and Perplexity.
How much ad budget have you managed?
Rahul has managed $1.4M in Google Ads at a 2.4× return and $773K in Meta Ads at a 2.1× return, over $2.1M in paid media in total.
Do you work with clients outside Kolkata?
Yes. Rahul has worked with businesses in India, the USA and Canada, and takes on remote projects worldwide.
Can you advertise my brand offline in Kolkata?
Yes. Rahul can arrange advertising on Kolkata Metro Rail, taxis across Kolkata and hoardings, plus online placements on ChatGPT, Medium and Quora and traffic growth through Reddit. Terms and conditions apply.
How was this portfolio built?
This streaming‑style portfolio was built with vibe coding and prompt engineering. The full prompt and source code are available at the bottom of the page.
Behind the scenes: the prompt
This portfolio was built with vibe coding and prompt engineering. Here’s the prompt that started it. Copy it, or download the complete source code and make it your own.
Build a single-page personal portfolio for Rahul Biswas, a digital marketer in Newtown, Kolkata, styled like a cinematic streaming app.
Look: near-black background, one deep red accent, Bebas Neue for display type and Manrope for body text. Original branding only.
Structure:
1. On every visit, open with an audience picker, "Choose your storyline": four poster tiles (Business owner, Clinic or hospital, Recruiter or HR, Fellow marketer) with line icons. Picking one reorders the sections and rewrites the hero text for that visitor, plays an original synthesized cinematic sound (Web Audio API, with a sound toggle) and a 3-second title-sequence intro built from the initials "RB".
2. A full-screen hero: name, a "98% match" line, years of experience, location, an "Open for projects" status and two buttons (See my work, About me).
3. Horizontally scrolling rows of title cards: ranking case studies (tall posters), websites built, skills, and advertising channels. Cards preview on hover and open a detail pop-up on click.
4. "Box office": Google Ads ($1.4M, 2.4x ROI) and Meta Ads ($773K, 2.1x ROI) as animated counters.
5. Career as an episode list, ending with his own agency as the season finale.
6. An About section, an FAQ, and a contact form that posts to a PHP mailer.
7. A behind-the-scenes section showing this prompt, with copy and download-source buttons.
Use Rahul’s cut-out photo in the hero and About section, and give every card its own original neon line-art illustration (SVG). Clicking the logo returns to the home page.
Quality: fully responsive, keyboard accessible, fast (no images, CSS-only art), and SEO-ready. All content in static HTML, schema.org ProfilePage, Person, ProfessionalService and FAQPage, Open Graph image, sitemap.xml, robots.txt, llms.txt and a custom 404 page.
Target keywords: streaming style portfolio, cinematic portfolio website, SEO expert in Kolkata, AEO and GEO expert, healthcare marketing in Kolkata.
Includes HTML, CSS, JS, PHP contact form, sitemap, robots.txt and schema markup.