Muhammad Sagin Jahan
Founder & CEO
Stores, ads, social media managed for you.
We run your stores on Amazon, Shopify, Walmart, eBay and TikTok Shop, your Google and Meta ads, and your social media: listings, stock, pricing, ad spend and posts, handled by one team.
Example projects, start to finish.
Concept builds that show how one team takes a real kind of problem from first call to a working product, each with the full case study behind it.
Concept · Healthcare · 2026
An assistant that books dental appointments after hours
A booking assistant for a multi-branch dental clinic that answers patients on WhatsApp and the website after the front desk closes, and books straight into the clinic calendar. Anything clinical, or anything it is unsure of, goes to a person the next morning.
Concept · Retail · 2026
A store that sells hand-stitched textiles to buyers abroad
A storefront for a workshop of nakshi kantha artisans selling quilts, throws and cushion covers to buyers in the UK, the Gulf and North America. One-of-a-kind stock, priced in the buyer’s currency, shipped from Dhaka.
Concept · Wholesale · 2026
Replacing phone orders with a platform shops can order from
A subscription platform for FMCG distributors whose retail shops still order by phone. Shops order from a phone app in their own language, and the distributor sees every order, route and unpaid invoice in one place.
Our services.
AI, SaaS and MVP builds, apps, ecommerce, QA and deployment, each with its own specialists and all of them in the same team. Adding a discipline halfway through never means briefing a new agency.
- 01
AI-Powered Development
Ship LLM features, copilots and agents into production without guesswork.
- 02
Ecommerce
Stores built to sell, then run for you: marketplaces, ads, social media and AI.
- 03
SaaS & MVP Development
Validate the idea fast, then engineer it to scale without painful rewrites.
- 04
App Development
Mobile + web apps that load fast, feel native, and survive real-world use.
- 05
Vibe Coding Assistance
Move from idea to working MVP in weeks — not quarters — with weekly iterations.
- 06
Software Testing & Deployment
From CI to observability: software that ships clean and stays clean.
Industries we serve.
Whatever the trade, we learn how it sells, books and gets paid first, then build the store, app or system it needs.
E-commerce
Real Estate
Software
Health & Fitness
Food & Drink
Music
Medical
Pharmaceutical
Automotive
Education
Travel
Entertainment
Retail
Business
Photo & Video
Startup
Furniture
Finance & Banking
Recent projects
Projects and the disciplines on each one, run by one team under one plan. Those marked concept were designed by us to show how we would solve that problem.
Pick a goal,see who works on it
Pick a goal to see how the work passes between our specialists. It stays under one plan and one point of contact the whole way.
- Vibe Coding Assistance
A prototype you can click in the first weeks, tested with the people you want as customers.
- SaaS & MVP Development
The core workflow, sign-up and billing built as the first real release.
- Software Testing & Deployment
Automated tests and a release pipeline, so weekly updates ship without breaking what works.
A product with paying users, on foundations it can keep growing on.
Three disciplines, one plan and one point of contact.
Plan this goal with us- Ecommerce
A store your own team can update, connected to payments, delivery and stock.
- App Development
A shopping app for the customers who order every week.
- AI-Powered Development
An assistant that answers product and order questions at any hour.
An online store with customers arriving and their questions answered.
Three disciplines, one plan and one point of contact.
Plan this goal with us- App Development
One codebase for iOS, Android and the web, designed around the task people open it for.
- Software Testing & Deployment
Device testing, store submissions and crash monitoring from the first release.
- AI-Powered Development
Search and suggestions that learn from how the app is used.
One app on iOS, Android and the web, released on a schedule you can plan around.
Three disciplines, one plan and one point of contact.
Plan this goal with us- AI-Powered Development
Invoices, emails and forms read, sorted and filed without retyping.
- App Development
An internal web app where your team reviews and approves what was filed.
- Software Testing & Deployment
Monitoring that flags anything the automation was unsure about.
Routine paperwork handled by software and checked by your team.
Three disciplines, one plan and one point of contact.
Plan this goal with usWhere AI fits into your business.
The four places it usually earns its keep: inside your product, as a chatbot answering your customers, as agents taking routine work off your team, and in how we build your software.
How a project works, step by step
We have. We explain each step in plain language, make the technical decisions with you and keep you in control the whole way.
DiscoverDay 1
Step 1: Tell us the outcome
A reply within one business day
PlanBefore any work starts
Step 2: Get a written plan
A written plan and price, free
BuildEvery week
Step 3: One team delivers it
A working build every week
RunOngoing
Step 4: We stay after launch
Monitoring, fixes and reports
Meet the team
The people you work with, from the first call to long after launch.
Zilam Mahmud
Manager
Sabrina Chowdhury
Project Manager
Md Emamul Mursalin
Full Stack Engineer
Hasan Mahmud
Software Engineer & Media Producer
Md. Mustafizur Rahman
Software Developer
Amit Hasan Sobuj
Network Engineer
S. M. Anik Islam
Chief Marketing Officer
Shakirul Islam Tamim
Marketing Officer
Hamim Al Mohaymin
Ecommerce Coordinator
Showing Muhammad Sagin Jahan, 1 of 10
Life atthe Rajshahi office
Launches we celebrated, certificates we earned, and the ordinary days in between. The office the work comes out of.
OnTek in numbers
The numbers behind one team that builds, launches and answers for the whole result.
6
Disciplines
AI, SaaS and MVPs, apps, vibe coding, QA and deployment, and ecommerce under one roof.
4000+
Projects
Shipped across every discipline since we opened.
126
Countries
Clients served from Hi-Tech Park, Rajshahi.
50+
People
Designers, engineers, AI specialists and QA engineers in one team.
What we deliver.
Ecommerce, AI, SaaS, CRM and custom software: what each kind of engagement gets you, and how we run it.
We take over the day-to-day running of your online store, from inventory to order processing, so everything runs smoother and stays organised, with clear communication throughout.
We put AI automation on the repetitive tasks your team handles today, so they can respond faster, built to fit the workflow you already have.
We turn your vision into a clean, modern, professional website that looks right and performs well on every device.
From first concept to final release, we build responsive, easy-to-use apps with the functionality your business needs.
We build your CRM around your processes instead of forcing you into generic software, with dashboards and workflow automation made for the way you work.
We turn an AI product idea into a working SaaS platform, handling the architecture, the user experience and the AI integration as one development partner.
We automate the store operations that eat your time, so order sync, inventory updates and reporting work together instead of by hand.
We build AI chatbots that answer customer questions, follow the context of a conversation and give useful answers, planned carefully into your existing channels.
We take complex requirements and turn them into reliable web applications, with clean code and close attention to detail.
We bring your client management into one custom CRM, so tracking leads, managing teams and keeping an eye on the business all happen in one place.
Beyond a basic chatbot: we build AI agents that work with your systems and carry out business workflows from start to finish.
We build SaaS platforms for scale, performance and usability, with subscription management and multi-user architecture built in from the start.
We build online stores with a professional look and a smooth shopping experience, with product management, checkout and payments handled with care.
We connect third-party APIs and AI-powered features without disrupting the systems you already run, with clear communication and quick answers when something is hard.
We bring disconnected business operations into one platform built for you, by a team that understands the business as well as the technology.
We take over the day-to-day running of your online store, from inventory to order processing, so everything runs smoother and stays organised, with clear communication throughout.
We turn your vision into a clean, modern, professional website that looks right and performs well on every device.
We build your CRM around your processes instead of forcing you into generic software, with dashboards and workflow automation made for the way you work.
We automate the store operations that eat your time, so order sync, inventory updates and reporting work together instead of by hand.
We take complex requirements and turn them into reliable web applications, with clean code and close attention to detail.
Beyond a basic chatbot: we build AI agents that work with your systems and carry out business workflows from start to finish.
We build online stores with a professional look and a smooth shopping experience, with product management, checkout and payments handled with care.
We bring disconnected business operations into one platform built for you, by a team that understands the business as well as the technology.
We put AI automation on the repetitive tasks your team handles today, so they can respond faster, built to fit the workflow you already have.
From first concept to final release, we build responsive, easy-to-use apps with the functionality your business needs.
We turn an AI product idea into a working SaaS platform, handling the architecture, the user experience and the AI integration as one development partner.
We build AI chatbots that answer customer questions, follow the context of a conversation and give useful answers, planned carefully into your existing channels.
We bring your client management into one custom CRM, so tracking leads, managing teams and keeping an eye on the business all happen in one place.
We build SaaS platforms for scale, performance and usability, with subscription management and multi-user architecture built in from the start.
We connect third-party APIs and AI-powered features without disrupting the systems you already run, with clear communication and quick answers when something is hard.
We take over the day-to-day running of your online store, from inventory to order processing, so everything runs smoother and stays organised, with clear communication throughout.
From first concept to final release, we build responsive, easy-to-use apps with the functionality your business needs.
We automate the store operations that eat your time, so order sync, inventory updates and reporting work together instead of by hand.
We bring your client management into one custom CRM, so tracking leads, managing teams and keeping an eye on the business all happen in one place.
We build online stores with a professional look and a smooth shopping experience, with product management, checkout and payments handled with care.
We put AI automation on the repetitive tasks your team handles today, so they can respond faster, built to fit the workflow you already have.
We build your CRM around your processes instead of forcing you into generic software, with dashboards and workflow automation made for the way you work.
We build AI chatbots that answer customer questions, follow the context of a conversation and give useful answers, planned carefully into your existing channels.
Beyond a basic chatbot: we build AI agents that work with your systems and carry out business workflows from start to finish.
We connect third-party APIs and AI-powered features without disrupting the systems you already run, with clear communication and quick answers when something is hard.
We turn your vision into a clean, modern, professional website that looks right and performs well on every device.
We turn an AI product idea into a working SaaS platform, handling the architecture, the user experience and the AI integration as one development partner.
We take complex requirements and turn them into reliable web applications, with clean code and close attention to detail.
We build SaaS platforms for scale, performance and usability, with subscription management and multi-user architecture built in from the start.
We bring disconnected business operations into one platform built for you, by a team that understands the business as well as the technology.
What clients say
From our Google listing: 4.9 across 17 reviews.