Freelance marketplace
Diatitis
An escrow marketplace where people abroad hire verified providers back home in Ghana, Cameroon and Côte d’Ivoire, and the payment is held until they approve the work.
Available for new platform builds
150 platforms delivered
Sifat Khan builds AI agents, SaaS platforms and custom platforms.
- AI agent creator
- Cloud engineer
- Full-stack platform developer
I design and build marketplaces, real estate portals, job boards, healthcare listings and learning platforms, each one custom-coded with no themes, page builders or plugin stacks.
- business owners
- 80+
- countries
- 29
- developer from plan to launch
- 1
Previously solution architect at Suisse AssociatesBased in Narayanganj, Bangladesh
People
Platform
Behind the scenes
Platforms I’ve built
Platforms and websites I’ve designed, built and launched for clients.
Real estate listing platform
Adriatic Life
A real estate listing platform for property on the Adriatic, where buyers browse listings and get in touch about the homes they like.
Auction platform
Oyin of North America
An online vehicle auction platform for buyers in North America, with listings, bidding and buyer accounts.
SaaS platform
Services Rhône-Alpes
A SaaS platform for professionals in the Rhône-Alpes region: a professional network and business directory with professional accounts, subscription plans, payments, services, content and AI.
LMS platform
IFBA BRM Course
A learning management system for the IFBA BRM course, where students enrol and take the course online.
150 websites and platforms delivered for 80+ business owners in 29 countries.
What I build
One developer from the first database table to launch day.
Custom platforms
Marketplaces, real estate portals, job boards, healthcare listings and learning platforms, built as one system around the way your business actually works.
- Dashboards for every type of user
- Payments, escrow and payouts
- Your own admin panel
- Email and SMS notifications
- Installable web app (PWA)
AI agents
Agents that answer customers, qualify leads and handle routine work, trained on your content and connected to your data.
- Customer support agents
- Lead qualification
- Bookings and actions
- Handoff to your team
- OpenAI and Claude models
Cloud and solution architecture
Database design, integrations, hosting and scaling planned before the build starts, so the platform can grow without a rewrite.
- Architecture plan
- Database design
- API integrations
- Hosting and performance
- Security hardening
Business websites
Fast, custom websites with an admin panel you can update yourself, without a page builder slowing things down.
- Custom design
- Content you can edit
- Search engine foundations
- Speed optimisation
- Enquiry forms
You work with the person writing the code
Requirements, architecture, build, deployment and testing all go through one person, from the first call to launch day.
You own a platform, not a plugin stack
Every feature is custom code written for your business, so there are no plugin conflicts, licence renewals or theme lock-in.
You see it working module by module
Each part of the platform is delivered working, so you test as it grows instead of waiting for one big reveal.
Also built: auction sites, dating and matchmaking platforms, freight and logistics systems, online stores and SaaS tools.
Clients come back for the next build.
Five-star reviews from projects on Fiverr, in the clients’ own words.
Rated 5 out of 5
“Working with Sifat has been one of the best decisions I made for my project. And honestly, 5 stars are not enough — he deserves much more. My project was not simple at all. It was extremely complex, highly customized, with many advanced features and over 100 active snippets that all needed to work together perfectly. … If you are looking for someone serious, patient, skilled, and truly committed — Sifat is the right person.”
Rated 5 out of 5
“Excellent work from Sifat from start to finish! Sifat developed Services Rhône-Alpes, a particularly ambitious and complex project with many different features: a professional networking platform, business directory, professional accounts, subscription plans, payment systems, services, SEO, content, artificial intelligence, and multiple user journeys. … I highly recommend Sifat to anyone looking for a serious, committed, skilled developer who is capable of handling complex web projects.”
Rated 5 out of 5
“Sifat understood exactly what I needed and turned my ideas into a fully functional, beautifully structured marketplace. He handled every aspect of the project with professionalism — customizations, integrations, design improvements, and performance optimization were all executed flawlessly. … If you’re looking for someone skilled, trustworthy, and dedicated, Sifat is absolutely the right choice.”
Rated 5 out of 5
“Good communication and everything is custom on request.”
Rated 5 out of 5
“Great experience with you brother. Our continuing project will not be complete without you and you already made it possible to achieve highest professionalism of work. I am really very happy and satisfied to work with you. Thank you brother!”
Rated 5 out of 5
“Working with Sifat Khan was an excellent experience from start to finish. … His attention to detail, clear documentation, and overall quality of work really stood out. Communication was smooth, proactive, and fast — which made a big difference under pressure. … I’d highly recommend Sifat Khan to anyone looking for a reliable, skilled, and cooperative developer who can perform well even in challenging setups.”
Rated 5 out of 5
“Absolutely perfect work! Sifat is an expert from A to Z who completely masters his craft. He was extremely attentive, highly accommodating, and always found a positive solution to every challenge. He is a true professional you can trust with your website with your eyes closed.”
Rated 5 out of 5
“It was great working with Sifat. He paid attention to the small details, was easy to communicate with and cooperative with feedback, and the final result came out great. He is super easy to work with and open to help with updates when needed. Definitely recommend.”
Rated 5 out of 5
“Great developers! Very comprehensive, and make sure they go the extra mile to make sure you get a site that fits your needs, and is optimized for converting to sales. This is our 3rd project with their team and will continue to send future projects their way.”
Rated 5 out of 5
“Working with him was an absolute pleasure! From the very start, communication was smooth and easy, and they understood exactly what I needed. They delivered high-quality work on time and were always open to feedback and quick with updates.”
Rated 5 out of 5
“I highly recommend Sifat, 5/5. Professional, creative, responsive, and delivered a great website. He is easy to work with and understands project requirements well.”
Rated 5 out of 5
“None of my stupid questions were treated as silly or stupid. The website design is amazing. Will definitely use Sifat again.”
Rated 5 out of 5
“Amazing work, went very above and beyond our expectations and was very detailed in custom coding for great user interface!”
Rated 5 out of 5
“Excellent Service by Sifat. He is very polite and supportive and very straight forward. Will see him again for running project.”
Rated 5 out of 5
“Just great.”
Rated 5 out of 5
“Thank you for fast work.”
Rated 5 out of 5
“Thanks for the great help!!”
Rated 5 out of 5
“What can I say? He did AMAZING!! A pleasure working with him for sure!”
Rated 5 out of 5
“Expertise is amazing, hardworking, and goes above and beyond.”
Rated 5 out of 5
“I had a great experience working with Sifat on my personal website. He was always available, communicated clearly throughout the project, and made every requested change quickly and without fuss. His professionalism, responsiveness, and attention to detail made the whole process smooth and enjoyable.”
Rated 5 out of 5
“Mr Sifat was a pleasure to work with. He is very patient and proactive! He provided me support through and through. … Technically he is exceptionally skilled. Looking forward to more projects with him.”
Rated 5 out of 5
“This guy is brilliant and definitely knows his trade. … He did an excellent job that we decided to do a second project with you.”
Rated 5 out of 5
“Thank you for your prompt and skilled work. You were efficient, easy to communicate with, and delivered exactly what I needed. I truly appreciate your professionalism and attention to detail.”
Rated 5 out of 5
“Sifat did a fantastic job on our site! And he did it so quick. Thanks Sifat!”
Rated 5 out of 5
“Very good experience I never had here on Fiverr. Sifat was always cooperative and polite.”
Rated 5 out of 5
“Another amazing experience with Sifat! He is truly a professional at a great price.”
Rated 5 out of 5
“Had a very good experience working with Sifat. Would highly recommend and will definitely be coming back!”
Rated 5 out of 5
“Very professional, understood SOW, delivered orloffphillips.com.”
Rated 5 out of 5
“Very good job done, highly recommend and would love to work with Sifat again.”
Rated 5 out of 5
“Great work!”
Rated 5 out of 5
“Great quality of work and communication skills. I would highly recommend using his services.”
Rated 5 out of 5
“Exceptional professional.”
Rated 5 out of 5
“Great communicator.”
Rated 5 out of 5
“Sifat is very polite and understanding.”
Rated 5 out of 5
“As usual, happy to work with Sifat.”
Rated 5 out of 5
“Very happy with your service again.”
Rated 5 out of 5
“I am from South Africa and this man is the man for the job. Very kind and understanding, quick delivery. He can speak with you on time if you need some additional information in your job board. I truly recommend people to try his gig. I can put my money with 5 stars, he is the best, trust me.”
Rated 5 out of 5
“Did a great job once again, thanks!”
Rated 5 out of 5
“Seller helped redesign my website to reflect our vision of a marketplace. Awesome work.”
Rated 5 out of 5
“Went above and beyond in product delivery.”
Rated 5 out of 5
“Amazing developer and person! Will be back for more.”
Rated 5 out of 5
“He is the best designer, with a long heart, he understands customer service. Good communication. Quality work. I recommend you try him and see for yourself. His designs are excellent. Thank you.”
Rated 5 out of 5
“This seller is awesome, we worked together to make sure everything was perfect.”
Rated 5 out of 5
“The work is excellent. Great communication, quality and quick delivery. He works with you and allows you to check your work before moving to the next step, and confirms everything before delivery. He even goes the extra mile to teach you about your work by sending a screen video so you see how it works. Go and order his work, you won’t regret it.”
Rated 5 out of 5
“I am a Fiverr regular buyer! This man is my best service provider so far. He always asks before he makes changes. His work is beautiful and everything just works well. He developed my website and rectified all errors. My website is now SEO friendly, all links correspond very well and the speed is just beautiful. I would recommend his gig, you won’t regret it.”
Rated 5 out of 5
“Fantastic work, and looking forward to working again.”
From Bangladesh to the world.
29countries with clients,
every one built remotely
Each line is a client. Drag the globe to spin it.
- United Kingdom
- United States
- Australia
- Germany
- France
- Netherlands
- New Zealand
- Singapore
- India
- Kenya
- Bangladesh
- Italy
- Namibia
- Ivory Coast
- North Macedonia
- Canada
- Belgium
- Saudi Arabia
- South Africa
- Greece
What will it cost?
Choose what you’re building and the parts it needs to see a typical budget and timeline.
From the blog
Practical guides on costs, timelines and the features that make platforms work.
- PricingHow much does it cost to build a marketplace website?What really drives the price of a custom marketplace, module by module, and how to keep the first version affordable without painting yourse…
- BuildingCustom code vs page builders: which is right for your platform?Page builders are great for simple websites. For platforms with users, payments and data, here is where they start to cost you, and when cus…
- PlatformsHow escrow payments work on a service marketplaceA plain-English walk through holding a buyer’s payment until the work is approved, releasing it to the seller and handling disputes fairly.
Questions clients ask
Straight answers about cost, timelines, ownership and how the work runs.
How much does a custom platform cost?
Most platforms cost $200–$1,200, depending on the parts they need. The estimate on this site gives a budget and timeline range in about a minute, and Sifat confirms every quote himself.
How long does it take to build a platform?
Most builds take 1 to 6 weeks. Modules are delivered as they are built, so you test the platform while it grows instead of waiting for one big reveal.
Do I own the code?
Yes. Every feature is custom code written for your business, so there are no licence renewals, plugin conflicts or theme lock-in.
Do you use themes or page builders?
No. Platforms are built from raw custom code, without premium themes, page builders or plugin stacks, so they stay fast and belong to you.
What kinds of platforms do you build?
Marketplaces, auction platforms, real estate portals, job boards, healthcare platforms, learning platforms (LMS), SaaS tools, AI agents, online stores, community and dating platforms, directories and booking systems, logistics platforms and business websites.
Can you add AI to my platform?
Yes. AI agents can answer customers, qualify leads, take bookings and hand conversations to your team, trained on your content and connected to your data with OpenAI and Claude models.
Do you work with clients outside Bangladesh?
Yes. Sifat has built for clients in 29 countries, including the United Kingdom, the United States, Australia, Germany and France, working over WhatsApp, email and calls.
Will my platform work on phones and in Google?
Every build is mobile-first, can be installed like an app, and includes search engine foundations: clean page structure, fast pages and structured data.
Tell me what you’re building.
Send a short description of your platform: who uses it and what they need to do. I’ll reply with a build plan and a quote.
It’s in Narayanganj right now.
Message sent
Thanks for getting in touch. I’ll reply with a build plan and a quote.
- Emailsifatkhan@buildwithsifat.com
- WhatsApp+880 1995 544116
