Custom Ecommerce Development
From checkout to growth engine.
Custom ecommerce development for B2C, B2B, D2C and marketplaces: headless, composable and measurable. Launch faster, convert higher and operate lean with KVY TECH.
Headless & Composable
Mobile‑first UX
SEO & Core Web Vitals
Data‑driven Growth
Power up sales across business models
B2C retailers
Tailored journeys, fast storefronts, and experimentation loops to lift conversion across devices.
- Personalized PDP/PLP
- A/B & feature flags
- Subscriptions & loyalty
- Checkout optimization
- Search & merchandising
Manufacturers
Digitize catalogs and channels. Integrate PIM/ERP/CRM to automate ops and serve distributors & end‑customers.
- B2B2C portals
- Dealer locators
- Customer-specific catalogues & contracts
- Spare‑parts catalogs
- Service workflows
B2B sellers
- Quotes & RFQs
- Net terms & PO
- Buyer roles & approvals
- Reorder & quick order
- Punchout & EDI
- Customer-specific catalogues & contracts
Marketplaces
Multi‑vendor orchestration from onboarding to payouts with powerful back‑office automation.
- Seller onboarding/KYC
- Catalog & offer sync
- Commissions & payouts
- OMS & logistics
- Dispute handling
Why KVY TECH
01
Increase speed to market
Accelerators, reference components, and CI/CD. Launch fast—keep quality.
02
Reduce development effort
Composable picks, cloud efficiency, and a right‑sized team keep the build focused.
03
Assure information security
Secure‑by‑design patterns, RBAC/SSO, and regular security testing.
04
Get high‑quality software
Performance budgets, automated tests, and code review gates.
05
Scale team up & down
Dedicated pods or augmentation—with Delivery & QA included.
06
Delivery Framework
A visible plan from discovery to growth, built for predictable outcomes.
Omnichannel commerce, end‑to‑end
Data & analytics
Align data, decisioning, and content across channels with a 360° view of the customer.
- Unified customer profile
- Predictive models
- Cross‑channel automation
- Omnichannel reporting
Stores & supply chain
Replace silos with a unified platform for inventory, fulfillment, and operations.
- E2E planning & info flow
- Integrated inventory & delivery
- Digitized capture & sourcing
- Automated fulfillment
Web & mobile
Consistent experiences everywhere with loyalty, social commerce, and responsive performance.
- Mobile‑optimized UX
- Omnichannel loyalty
- Social ordering
- Cross‑channel service
All‑in ecommerce services
Ecommerce consulting
- Technology roadmap
- Site & app audits
- Functional specs
- Platform selection
Ecommerce design
- UX/UI for web & mobile
- Integrated inventory & delivery
- Platform‑based design
- Redesign programs
Ecommerce development
- Custom storefronts & APIs
- Backend & frontend dev
- Microservices for scale
- Platform‑based builds
Platform optimization
- Platform modernisation
- API‑first integrations
- DevOps review & hardening
- Custom extensions
QA & support
- Dedicated QA squads
- Usability & accessibility
- Preventive maintenance
- 24/7 monitoring
Turn your store into a connected ecosystem
CRM
- CX management
- Sales & marketing ops
- Lead/deal lifecycle
- Tickets & routing
- Omni monitoring
ERP
- Finance & accounting
- Sales & marketing
- Supply chain
- Docs & returns
- Always‑accurate storefront data
SCM
- Inventory & procurement
- WMS tracking
- Order & transport mgmt
- Supplier relationships
Payments & POS
- Hosted/non‑hosted gateways
- Self‑hosted & custom gateways
- Wallets & POS
- Security first
PIM
- DAM across channels
- MDM
- Inventory sync
- Product feeds & EDI
- Search & merchandising
Social commerce
- Shops with checkout
- Custom plug‑ins
- Shoppable media
- Unified social CX
Beyond the storefront
Marketing & sales automation
Launch personalized, timely campaigns at scale—less grunt work, more revenue.
- Pipeline visibility
- Automated delivery
- Dynamic segmentation
- Spend optimization
- Dynamic content
Order & inventory management
Real‑time stock and fulfillment with fewer spreadsheets and fewer surprises.
- No manual entry
- Serial/batch tracking
- Credit & invoicing automation
- Order orchestration
- Live shipping options
Reporting & analytics
Turn scattered data into a growth compass for product, marketing, and CX.
- Behavior insights
- Channel attribution
- Personalization
- Portfolio optimization
- Cross/upsell tactics
Outstanding tech to up your game
AI / Machine Learning
- Hyper‑personalization
- Real‑time profiles
- Process optimization
- GenAI assistants
Internet of Things
- Smart warehousing
- Beacon loyalty
- Wearables for retail
- GPS/RFID tracking
Augmented / Virtual Reality
- Try‑before‑you‑buy
- Virtual store tours
- 3D catalogs
- V‑commerce
Automation Commercial rules management
- Commercial rules management
- Payment processing
- Supply chain ops
- Inventory automation
- / Techstack
Tech stack & experience
From idea to repeatable growth
1/5
KPIs, roadmap, and architecture options aligned to your business model.
Discover
2/5
Design
3/5
Composable services, integrations, and automated testing.
Build
4/5
Hardening, observability, and runbooks for a clean go‑live.
Launch
5/5
Experimentation, personalization, and continuous optimization.
Grow
Who our custom ecommerce development is for
KVY TECH is a senior-led boutique software engineering firm in Ho Chi Minh City, Vietnam, founded in 2018. We build custom ecommerce for established businesses of roughly 20 to 500 people, and for founders building an ambitious first product, usually in 8 to 16 week engagements.
Our clients are usually founders, CTOs and heads of operations who must make a software decision they can defend to a board, an investor or their own team. That often means planning a new ecommerce business or fixing the software decisions behind an online business that has outgrown the first version.
These are the situations teams usually arrive with: a platform that needs a workaround for every promotion, a codebase nobody left at the company has read, or a product that exists as an idea and a deadline. In each case we build a new system, and the engineer making the technical decision is the person in the meeting with you. Teams that outsource ecommerce development to us work with those same engineers from scoping to handover.
Vietnam is UTC+7 and Singapore is UTC+8, so the working day overlaps almost completely, and you speak directly with the engineers rather than through an account manager.
What we build: B2C, B2B, D2C and marketplaces
We build composable storefronts and commerce backends, heavily customised to the way your business trades.
Our B2C ecommerce development covers storefronts for an online store.
Our B2B ecommerce development covers commerce backends for businesses that sell to other businesses, including integration between ERP, accounting and the storefront.
Our D2C ecommerce development helps a brand run a composable storefront their team can operate as customer needs change.
Marketplaces are among the domains we work in, alongside security, fintech, ecommerce, trading, AI, machine learning and internal systems. You can also read about Above Diamond.
Our ecommerce technology stack
Our stack is Next.js, Medusa.js, Payload CMS, PostgreSQL and Redis.
Our Medusa.js development service covers composable commerce backends, built together with Next.js storefronts and Payload CMS for content. That setup suits headless commerce when an online store needs a separate storefront and backend. We also build custom checkout flows when an ecommerce store has B2B, subscription, or multi-region rules that standard templates do not handle cleanly.
On a fixed-scope, 12-week project for JML Singapore Pte Ltd, we recommended Medusa.js after reviewing alternatives, and said before work started that a SaaS platform would ship faster but leave years of technical debt. The internal team held full operational control at handover.
Multi-currency support, local payment methods and tax handling are architecture decisions from the first week, not late additions. We lay out the trade-offs of each option before work starts, so the decision is one you can defend.
Engagement models
Our custom ecommerce development services run in one of three ways. Fixed-scope project: most clients start here. You get a defined outcome and timeline with no long-term contract, delivered by a full team of project manager, software architect, engineers and designers.
Dedicated development team: a named team in Ho Chi Minh City working only on your roadmap, billed monthly. You set the priorities, and our engineering leaders handle hiring, replacement, tooling and performance.
Project takeover: this starts with an audit. An architect and one or two engineers document what exists, stabilise what is breaking, and write up what it would take to fix or replace it. The assessment sometimes recommends keeping the existing system.
In every model you own the code, infrastructure configuration and documentation from the first commit, and you get a weekly written update with a demo of working software.
After launch: warranty, handover and a dedicated team
Every project ends with a handover session with the engineers who built the system, and systems are documented so your own team can run them without KVY.
A warranty period, usually two months, follows handover. Defects found after handover are fixed at no charge.
If you want us to stay on, a dedicated development team can keep working on your roadmap: a named team in Ho Chi Minh City, billed monthly, with your priorities setting the order of work.
During delivery and afterwards you keep a named contact on WhatsApp, and you own the code, infrastructure configuration and documentation. Everything is 100% confidential, and KVY signs an NDA.
Tell us what you are building. We reply within one working day.
- / FAQs
Frequently Asked Questions
- Do you build new systems or work incrementally?
- Which platforms do you support?
Medusa.js, Payload CMS, Shopify/Hydrogen, WordPress/WooCommerce, plus custom headless builds, including custom apps and checkout extensions where they are the right fit.
- How do you measure success?
North‑star KPIs (CR, AOV, LTV), performance budgets, and experiment velocity with clear guardrails.
Related insights
Let’s build your next growth story
Start with a fast discovery and a pilot for custom ecommerce solutions. Ship impact in weeks, not quarters.