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Written scope within 48 hours

Stores and marketplaces that convert, and still run on Monday.

We build custom e-commerce and marketplace platforms for retailers who have outgrown templates: checkout, payment gateway integration (Stripe, Razorpay, PCI-DSS) and the inventory and ops behind it that hold under real traffic. That runs through our backend development service wired directly into the storefront, inside the same software for e-commerce and retail work we ship for retail clients.

Nobody budgets for the hours already being lost. Tell us the outcome: you get a written scope within 48 hours.

  • 48h

    To a written scope

  • Week 1

    Clickable prototype

  • 6–14 wks

    To first release

  • 100%

    Code and IP yours

Get your free estimate

Three quick questions: scope, approach and a price range back within 48 hours. No sales call required first.

What do you need built?
When do you want to start?
Where should we send the estimate?

Answer all three questions above, then send.

NDA-friendly · IP yours from day one

Trusted by companies worldwide

  • Bloomford
  • Contractor Plus, Inc.
  • Snappy Stats
  • Ad Lunam
  • Local Buzz
  • CyberFind
  • Hellory
  • 5.0Clutch · 8 client reviews
  • 4.9Google · 18 reviews
  • Top ratedUpwork · 100+ reviews · 5K+ hours worked
  • TopTracker7K+ hours tracked with clients

Why teams call us

You are probably here for one of three reasons.

Every E-Commerce Development project we take on starts from one of these. Recognise yours and the rest of this page gets more useful.

  • Catalogue and inventory are stuck in spreadsheets

    SKUs, stock levels and pricing tracked by hand across a dozen files, drifting out of sync with what is actually on the shelf or the platform.

    Migrate the catalogue into one system that stays correct.

  • The checkout is where deals are lost

    A brittle Stripe or Razorpay integration, a webhook that silently fails, or a PCI-DSS gap costs more in abandoned carts and chargebacks than a slow product page ever will.

    We build the payment gateway integration to be debugged, not just to pass a demo.

  • The storefront launch has stalled

    A previous team left half-migrated products, a broken checkout step or a theme nobody can safely touch.

    Audit, stabilise, then ship again.

A storefront's back office: payment terminal, scanner, shipping boxes and an order sheet
Terminal · scanner · boxes · checkout

What you actually get

Six things you can hold, not a plugin list.

Anyone can spin up a theme. These are the artefacts that land in your hands, and roughly when.

  1. A written scope, before anything is built

    Which payment gateway, which catalogue migration path, and what stays out of scope for launch.

  2. A clickable prototype in week one or two

    Real screens of the storefront or portal you can put in front of buyers before checkout is wired to a live gateway.

  3. Working software every two weeks

    A demo against a real cart and a test payment, plus a written report of what shipped.

  4. Code in your repositories from day one

    Your GitHub, your cloud accounts, your IP under NDA, with commit access from the first sprint.

  5. Tests on the paths that matter

    Automated coverage on payment, refund and inventory-sync flows, so a gateway update does not silently break checkout.

  6. Documentation and a handover

    Runbooks for payment webhooks, catalogue imports and the admin, so your team can operate the store without us.

What it costs

Three ways to start, priced honestly.

Ranges, not single numbers, because the real figure depends on integrations and migration scope. See what a project costs with us for how payment gateway and checkout work is priced, or get the exact number in writing after one call.

  • Launch

    One core journey, production-ready.

    Investment

    From mid four figures USD

    Timeline

    6–8 weeks

    • Discovery and written scope
    • Clickable prototype before build
    • Core journey in production
    • Auth, roles and admin basics
    • Your repos and cloud accounts
    • 30 days post-launch support

    For founders validating a product with real users.

    Start with Launch

  • Most chosen

    Scale

    A full product with the integrations that matter.

    Investment

    From low five figures USD

    Timeline

    10–14 weeks

    • Everything in Launch
    • Two to four external integrations
    • Payments, billing or subscriptions
    • Reporting and analytics
    • Automated tests on critical paths
    • Fortnightly demos and reports

    For founders validating a storefront or portal with real buyers.

    Start with Scale

  • Platform

    A standing team that keeps shipping.

    Investment

    Retainer or dedicated pod

    Timeline

    Ongoing

    • Everything in Scale
    • Named technical lead
    • Multi-tenant or multi-entity architecture
    • Performance and cost optimisation
    • Monitoring, uptime targets, on-call
    • Roadmap planned quarter by quarter

    For products where the roadmap does not end at launch.

    Start with Platform

Ranges reflect projects delivered in 2025–26 and move with integrations, data migration and compliance scope. Every engagement starts with a written scope listing exactly what is included and what is not.

Our clients · reviews

Teams who trusted QalbIT

Short feedback from clients and products we work on across web, mobile, SaaS and internal tools.

  • Testimonials from long-term custom software development and SaaS product clients.
  • Covers ERP systems, B2B marketplaces, booking platforms, and web & mobile app development projects.
  • Real text and video reviews from founders, CTOs, and product teams who partnered with QalbIT for delivery.

  • Video review

    Rated 5 out of 5.
    “Working with QalbIT was an absolute pleasure. They understood our brand vision, delivered a WordPress site that is easy to navigate, and kept communication smooth throughout. I would absolutely recommend them to anybody.”
    Imdad Ali KadiwalaFounder, Netzur

  • Written review

    Rated 5 out of 5.
    “QalbIT is a fantastic dev partner. They provide quality work, good communication and go above and beyond. Fantastic work delivered by QalbIT and his team. Can’t give enough credits with regards to how they work and at which speed they do it. Top team.”
    Joost HesselberthFounder of Ad Lunam Investments PTY LTD

  • Written review

    Rated 5 out of 5.
    “We have been working with the QalbIT team for a long time. They are very fast, reliable and have excellent communication. Highly recommended for development work.”
    Ivo KuipersSolution Architect at Heuvelman Sound & Vision B.V.

  • Written review

    Rated 5 out of 5.
    “They took a half-finished marketplace, stabilised it, and shipped the modules we actually needed first. The weekly demos meant nothing came as a surprise.”
    Abhishek P.Product Lead · B2B marketplace

  • Written review

    Rated 5 out of 5.
    “I would recommend QalbIT to everybody. QalbIT has been developing all my front-end & backend systems complete to my requirements. They have excellent technical knowledge and listen very well to the needs of their customers. And above all, they are great people.”
    Wouter SantensExecutive Search Consultant at Bloomford

  • Written review

    Rated 5 out of 5.
    “They listened to my ideas and came up with a plan for development then executed that plan to completion. I liked their attention to detail and communication skills. Very responsive.”
    Osmond MwanyikyCTO, Bocsit

  • Written review

    Rated 5 out of 5.
    “Excellent work! QalbIT team delivered the project on time with great quality. Their ability to quickly adapt to new requirements and deliver promptly was impressive. Highly recommend them for Flutter projects.”
    Ahmed GFounder at Local Buzz

  • Written review

    Rated 5 out of 5.
    “It was a pleasure working with QalbIT Team. Very professional with their work and timeline. Very responsive and easy to work with QalbIT.”
    Mostafa GadFounder of Vizit

  • Written review

    Rated 5 out of 5.
    “QalbIT quickly integrated four platforms quickly. Square, Stripe, PayPal, and Coinbase were all successfully used. The vendor provided an active communication process, maintaining timely deadlines despite the research-heavy service. They also offered post-launch support.”
    Roshan SethiaCTO, Contractor Plus, Inc.

  • Written review

    Rated 5 out of 5.
    “QalbIT successfully developed an app in a timely manner. Their team maximized their knowledge and skills to produce strong deliverables. They were hardworking, effective, and adaptive in the workflow.”
    Jonathan AshbyHead of Communications & ICT, Londonwide LMCs

  • Written review

    Rated 5 out of 5.
    “QalbIT’s Team was excellent to work with and went over and above to ensure the job was completed successfully. Would highly recommend for your website work.”
    Kate AllinsonCo-Founder & CEO at Elo Branding

How it runs

From first call to running software in four moves.

The same process on every storefront or portal engagement, whichever package you start from.

  1. Scoping call

    A working call about the storefront, the payment gateway and the migration constraints. Not a pitch.

    Day 1–3

  2. Written scope & price

    Architecture options, timeline and a price range you can take to your board.

    Within 48 hours

  3. Prototype & build

    Clickable prototype of the storefront or portal, then working software in fortnightly sprints.

    Week 1 onward

  4. Launch & operate

    Deployment to your cloud, payment and inventory monitoring in place, then the next slice.

    Launch week

Proof

Three e-commerce development engagements we scoped, built and still support.

Different sectors, same process, and in each case the client owns the code.

How we work

A product engineering culture built on ownership and clarity.

The habits that decide whether software still works in year three. Here is the honest comparison: what most outsourced engagements look like, and what changes when you work with us.

How an engagement with QalbIT compares
The questionThe usual answerAt QalbIT
Who scopes itA salesperson, then a handover docThe founder and the engineer who will build it
Who writes the codeWhoever is on the bench that monthNamed senior engineers, in our office, no subcontractors
What you see weeklyA status deck and a percentageA working demo and the board it came from
When something breaksA ticket queue and an account managerThe engineer who wrote it, in your timezone overlap
If you want to leaveA migration project and a licence conversationThirty days notice · repos and IP were always yours

  • Principle 01

    Ownership over ticket-taking

    Engineers who ask why before they ask which framework. Scope questions come back before code goes out.

  • Principle 02

    Written over remembered

    Scope, estimates and architecture decisions are written down with the trade-off stated. Nobody relies on what was said on a call.

  • Principle 03

    Small over staffed

    Senior pods that hold the whole system in their heads beat large mixed teams that need a coordinator to function.

Engagement models

Flexible engagement models.

Choose how you want to work with us based on where your product is today. We help you validate, ship and then scale without forcing you into a one-size-fits-all model, and how we price projects follows the model you pick.

  • Best for defined scope

    Fixed-scope projects

    Best when requirements are clear and we can estimate precisely.

    • Clearly defined scope, milestones and deliverables.
    • Predictable budget with upfront estimates.
    • Ideal for MVPs and discrete feature releases.

    Works well with good documentation or a short discovery

  • Most chosen

    Dedicated product squad

    A cross-functional team that behaves like your in-house product team.

    • Stable team for long-term ownership and roadmaps.
    • Capacity planned monthly with clear velocity.
    • Founder involvement on architecture and key decisions.

    When software is core to your business

  • Best for ongoing work

    Time & material / Agile

    Ideal for ongoing iterations, R&D and integrations.

    • Pay for actual engineering and design time used.
    • Flexible backlog and scope, prioritised every sprint.
    • Perfect for experiments and proof-of-concepts.

    When agility matters more than fixed scope

What protects you

Five commitments that make the first engagement low risk.

The objections worth raising before you sign anything, answered up front rather than buried in a contract.

  • Free written scope

    Integration plan, PCI-DSS scope, timeline and price range within 48 hours, yours to keep whether or not you hire us.

  • IP and repos yours, day one

    Code, repositories and cloud accounts in your name under NDA, with commit access from week one.

  • Changes quoted in writing

    A new integration or a widened compliance scope is priced and approved before it is built. The number never moves quietly.

  • Replacement guarantee

    If an engineer is not the right fit we replace them at no recruitment cost, with handover before they leave.

  • 30 days notice

    Monthly engagements end or scale down with 30 days notice. No annual lock-in.

Industries we build this for

Tailored software solutions built for your industry's success.

We bring patterns from multiple domains, but always adapt them to your specific context, constraints and users, never a template dropped on your business.

More services

Software development services at a glance.

From MVPs to long-term platforms, combine our core and specialised services to design, build and grow products that match how your business really works.

FAQs · E-Commerce Development

E-commerce development questions, answered

Payment integration, checkout, migration and what keeps a store running after launch.

Ask us directly →
Launch, one core storefront or portal journey in production, starts from mid four figures USD. Scale, a full store with payment integrations, inventory and reporting, starts from low five figures USD. The written scope after your first call turns that into a firm number.
A focused first release is 6 to 8 weeks. A fuller build with payment gateway integration, inventory sync and reporting runs 10 to 14 weeks. You see a clickable prototype in week one and working software every two weeks after.
Stripe and Razorpay most often, built to PCI-DSS requirements from the start rather than patched in afterward. Webhooks are tested against failure, not just the happy path, because a webhook that silently fails is where most stores actually lose money.
Yes. We start with a short audit of what exists (catalogue, orders, customer data) and give you an honest read on what migrates cleanly, what needs cleaning first and what the move costs either way.
That is the specific bar we build the payment integration to. Automated tests cover the checkout and payment paths because a failure there costs a sale, not just a bug report, and load is considered before launch rather than discovered after a sale spike.
All three, on the same underlying approach: a storefront for direct retail, a portal for B2B ordering and pricing rules, or a marketplace with multiple sellers and payouts. Which one you need shapes the architecture, so it is confirmed in the written scope before anything is built.
You do, from day one. Repository, cloud accounts and IP sit in your name under NDA, with commit access from the first sprint. There is no platform lock-in and nothing to negotiate if you move hosting or add an in-house team later.
Launch is a release, not an ending, and Monday morning is the actual test. Most clients keep a small standing team for monitoring, catalogue changes and the next integration, with uptime targets in place from day one. It is optional, and it ends or scales down on 30 days notice.
It is quoted in writing with cost and timeline before it is built. On a retainer you simply reprioritise at the next sprint boundary instead of raising a change order.
Send us the platform you are on today, if any, and the payment gateway you need. You get a written scope, an architecture recommendation and a price range within 48 hours, free, and yours to keep either way.

Next step

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Send the problem in two lines. You get a written scope, timeline and price range within 48 hours, free, and yours to keep either way.

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