Custom eCommerce development services

Nexterse LLC develops and improves eCommerce platforms for companies that prioritize stable growth and profitability. We handle the complexities: architecture, integrations, performance, security, and post-launch support. You get predictable deadlines, a transparent budget, and a team committed to delivering results.

  • ISO 9001:2015 certification for quality management
  • ISO/IEC 27001:2022 for data security
  • SOC 2 compliance for security, processing integrity, confidentiality, and privacy
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Clients rate our services

5,0

Why choose Nexterse LLC services

  • We offer strong eCommerce expertise backed by successful projects.
  • Since 2020, we've implemented over 250 solutions for Clients in 25+ countries.
  • Nexterse LLC is recognized as one of the top eCommerce developers in the US.
  • 70% of our employees are senior-grade engineers.
  • Techreviewer ratings note our experience in Shopify development and migrations.
  • Our Clients include Toyota, Beiersdorf, Cornerstone OnDemand, Dexai Robotics, and other international companies.
  • We strive to be a long-term technology partner for our Clients.
Why choose Nexterse LLC services

eCommerce development services

Custom eCommerce development from scratch

Custom eCommerce development from scratch

When standard platforms are no longer sufficient, we do the following for you:

  • Identify business goals, budget, time constraints, and the specifics of your market.
  • Develop the catalog structure, shopping cart, promotional mechanics, taxes, shipping, and user roles.
  • Create an architecture that enables product development.
Existing eCommerce solution audit

Existing eCommerce solution audit

We analyze your current store or marketplace at every level: code, architecture, security, UX, and performance to:

  • Identify bottlenecks, technical debt, and security and crash risks.
  • Prepare a report with specific recommendations and prioritization.
  • Separately assess where it's more profitable to fix and where it's easier to rewrite a block or module.
Mobile eCommerce applications

Mobile eCommerce applications

We develop mobile applications for iOS and Android for online stores and marketplaces that:

  • Facilitate one-handed purchases, quick repeat orders, push notifications, and saved carts.
  • Have integrations with your existing website or create a unified backend for all channels.
  • We support store releases and user behavior analytics.
Redesign and modernization of eCommerce platforms

Redesign and modernization of eCommerce platforms

We update legacy stores to improve conversion and assist marketing with:

  • New UX logic for the catalog, filters, search, cards, cart, and checkout.
  • Backend optimization: queries, cache, integrations, and database operations.
  • Maintenance of SEO rankings and minimization of the risk of organic traffic decline.
eCommerce integrations with internal systems

eCommerce integrations with internal systems

We connect your online store with your internal systems, payment providers, and delivery services so data stays in sync:

  • Synchronization of orders, inventory, prices, and delivery statuses.
  • Integrations are made fault-tolerant, with logging and clear alerts.
  • Backup scenarios in case of external service failures.
Support and development of eCommerce solutions

Support and development of eCommerce solutions

We provide post-release and post-migration support by:

  • Fixing bugs, optimizing performance, and adding functionality in accordance with the agreed-upon backlog.
  • Assisting marketing with experiments: A/B tests, promotional mechanics, and new storefront options.
  • We work as a dedicated team or on a fixed-hours basis.

Build your custom store

Launch a high-performing, scalable online store tailored for your brand.

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Platforms and technologies we work with

Custom eCommerce solutions

We build custom eCommerce solutions using Ruby on Rails, Node.js, React, Vue, and other modern stacks, choosing the right one for each task. A custom approach is justified when non-standard logic, complex integrations, and high loads are required. We carefully consider the cost of ownership to ensure the architecture is not overly complex.

Custom eCommerce solutions

Shopify and Shopify Plus

Nexterse LLC is one of the top Shopify developers in the US and other regions, according to Techreviewer. We create custom themes, apps, integrations, and migrations from other platforms. Mid-market companies employ us to migrate to Shopify Plus without losing data or SEO. We set up payments, taxes, logistics, and reporting, taking into account business and market requirements.

Shopify and Shopify Plus

More platforms and ecosystems

We work with BigCommerce, WooCommerce, and a range of less common solutions. Our evaluations are always honest about when it makes sense to improve an existing platform and when it's cheaper to migrate. We integrate eCommerce with Salesforce and other enterprise systems, and we review the overall integration architecture.

More platforms and ecosystems

Types of eCommerce solutions we work with

B2C online stores

Stores for brands and online retailers targeting consumers.

  • We focus on search, filters, promotional features, checkout speed, and mobile experience.
  • We take into account taxes, cross-state shipping, and local market specifics.

B2B portals and wholesale accounts

B2B portals for manufacturers, distributors, and wholesalers.

  • We implement account roles, order approvals, customized price lists, and catalogs.
  • We develop complex pricing models, credit limits, and payment terms.
  • We create user-friendly interfaces for managers.

Marketplaces for small and medium businesses

Such marketplaces as SellBig, a platform where small businesses sell within the US and internationally.

  • We set up seller onboarding, moderation, storefronts, and sales analytics.
  • We implement chatting between sellers and buyers, returns, disputes, and reports for administrators.
  • We provide a flexible, manageable catalog, banner areas, and SEO settings for categories and cards.

eCommerce for food delivery and on-demand services

Sous Kitchen is an example of a home-cooked food service that we migrated to a new platform.

  • We know how to account for time slots, delivery zones, and kitchen schedules.
  • We build routing, order statuses, notifications, and bonus programs.
  • We create dashboards for the kitchen, couriers, and support staff so that all participants can see up-to-date data.

eCommerce within content and service portals

Portals such as Hauz, which is an interior design website where users explore ideas and buy products immediately.

  • We can connect content, product catalogs, and service provider selection in a single solution. This approach is suitable for niche media, service marketplaces, and educational platforms.
  • eCommerce becomes part of the ecosystem, rather than a separate website.

Social commerce and mobile storefronts

Solutions that connect purchases and user social behavior.

  • We add feeds, favorites, reviews, collections, and mechanisms for influencer and recommendations.
  • We consider which triggers and events are essential to track for marketing and product analytics.
  • We immediately establish a unified user profile between the website and the app.

Recent software we made

Better Digital Experiences
Better Digital Experiences

A Modern Web Platform Built for Performance & Growth

We partnered with WorkHive to build a modern, responsive web experience focused on usability, performance, and scalability for long-term growth.

  • 100% Responsive Across All Devices
  • Optimized for Speed & Performance
  • Scalable Architecture for Future Growth
Automate. Connect. Scale.
Automate. Connect. Scale.

Transforming Business Operations with CRM & Automation

We helped Lifty streamline operations through CRM customization and intelligent automation, connecting processes and reducing repetitive work.

  • Centralized CRM
  • Workflow Automation
  • Connected Data Systems
Technology Built for Insurance
Technology Built for Insurance

Building a Custom Software Platform for Insurance Operations

We developed a custom software platform tailored to the insurance business, bringing essential processes into one centralized system for teams.

  • Custom-Built for Insurance Operations
  • Centralized Policy & Customer Management
  • Streamlined End-to-End Business Workflows
Digitizing Travel Experiences
Digitizing Travel Experiences

Building a Smarter Digital Experience for Travel & Tourism

We helped A to Z Travel and Tours strengthen its digital presence with a modern solution that simplifies interactions and showcases travel services.

  • Digital Travel Services
  • Responsive Design
  • Customer Engagement
Andrew Laffoon

Andrew Laffoon

CEO & Co-Founder

We wanted to let customers describe what they wanted in a few words and get a ready-to-order photo book back, but building that AI experience on top of a platform millions of people already trusted meant we couldn't afford to get it wrong. Nexterse LLC helped us build and ship that feature without disrupting the core product our existing customers rely on every day. It cut the time it takes people to go from idea to finished book dramatically, and it's become one of the ways new customers experience the platform for the first time.

Severine Nijs

Severine Nijs

Founder & Managing Director

Running a model agency with a roster of thousands means an enormous amount of profiles, bookings, and digital assets to keep organized, and our internal tools hadn't kept pace with how the industry was moving toward digital modeling. Nexterse LLC built us a platform to manage our models' profiles, availability, and digital assets in one place, and helped us lay the technical groundwork for offering digital twins of our models to brands. What used to be scattered across spreadsheets and inboxes is now a single system our whole team relies on daily, and it's opened doors to work we simply couldn't have taken on before.

Matthias Geeroms

Matthias Geeroms

Co-Founder & Corp Dev

Our revenue management platform pulls in pricing and demand data from tens of thousands of properties in near real time, and as we scaled, keeping that data pipeline fast and accurate became a real engineering challenge. Nexterse LLC helped us re-architect parts of our data ingestion layer so it could handle far higher throughput without falling behind during peak booking periods. The platform now processes rate and demand signals faster and more reliably, which directly translates into better pricing recommendations for the properties that depend on us. It's exactly the kind of partner you want when the data never stops coming.

Roeland Delrue

Roeland Delrue

Co-Founder

We wanted developers to see code, cloud, and runtime security in one place instead of juggling five different tools, but stitching all those signals together into something fast and genuinely useful was a heavier engineering lift than we expected. Nexterse LLC helped us unify our scanning pipelines so results from different layers of the stack could be correlated and prioritized automatically instead of dumped on developers as noise. Scan times came down, false positives dropped, and our platform now gives teams a single, trustworthy view of their risk instead of another alert queue to ignore.

Michiel Bearelle

Michiel Bearelle

Co-Founder

We made the call to pivot our platform from procurement into HR, which meant rebuilding a meaningful part of the product without disrupting the customers who were already relying on us. Nexterse LLC helped us re-architect the core of the platform so we could introduce entirely new HR workflows while keeping the parts that already worked stable for existing customers. The migration went smoother than we expected for a pivot of that size, and we came out the other side with a cleaner foundation to build the new product on.

Ricardo Ghekiere

Ricardo Ghekiere

Co-Founder

Our AI headshot platform was growing fast, and our generation pipeline was starting to show it, with turnaround times creeping up whenever demand spiked and quality consistency becoming harder to guarantee at volume. Nexterse LLC rebuilt our image pipeline around a more resilient queuing and processing architecture, so thousands of concurrent headshot jobs no longer competed for the same resources. They also tightened how we handle and discard uploaded photos, which mattered a lot given how sensitive that data is. Turnaround time dropped, output stayed consistent even during our biggest traffic days, and we've been able to scale well past a million headshots delivered without the platform buckling.

Custom eCommerce development process

We design and develop bug-free eCommerce websites with customer-centered UX/UI to inspire your visitors to buy your products online.

1

Initial research

  • Analysis of stakeholders' needs
  • Analysis of key eCommerce competitors
  • Market and customer research for your niche
2

Discovery phase

  • Product vision
  • Software requirements specification (SRS)
  • Project roadmap
  • High-level eCommerce architecture design
3

eCommerce website design

  • Interactive eCommerce prototype
  • User journey mapping
  • UI design and motion basics (animations, micro-interactions)
  • Defining the visual style and tone of the website
  • Design reviews and feedback from stakeholders
4

eCommerce website development

  • Back-end development
  • Front-end development
  • Performance optimization
  • Integration of APIs and payment providers
5

Quality assurance

  • Functional testing
  • Non-functional testing (performance, security, usability)
  • Regression testing
  • Bug tracking and fixes
6

Release of the eCommerce website

  • Hosting setup and configuration
  • Migration from staging to production
  • Final round of testing in production-like conditions
7

Post-release support

  • Changes and improvements to existing features
  • Design and development of new features
  • Management of library and framework updates

Cost factors of custom eCommerce software

The cost of eCommerce website development depends on the project scope, technology, and business goals. Based on our experience, five factors most affect the budget.

Target audience

B2B eCommerce projects usually cost more than B2C stores.

Solution type

A marketplace needs more analysis and development than a simple online shop.

Scope

The broader the feature set, the higher the cost. Examples: complex search, custom pricing rules, multi-step checkout, loyalty programs.

Target platforms

We can build for web, mobile web, cross-platform apps, native apps, and other devices such as wearables. Each extra platform adds design, development, and testing effort.

Locations

Costs grow when you add regions, languages, and local payment and tax rules.

Schedule a strategy session

Discuss your revenue goals with our eCommerce experts.

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Awards& Recognitions

Clutch 2026 — Top Python and Django Developers in Boston
GoodFirms — Top Software Development Company
Clutch 2026 — Top Artificial Intelligence Company in Boston
techreviewer.co 2026 — Top Software Development Companies
GoodFirms — Top AI Development Company
Clutch 2026 — Top .NET Developers in Boston
techreviewer.co 2026 — Top AI Integration Companies
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Responsive Design Development 2025
Mobile Software Development 2025

Frequently asked questions

Simple online stores typically start at $25,000. Complex marketplaces and B2B portals can exceed $1,000,000. We provide a precise estimate after a free assessment of project requirements. The price of eCommerce website development depends on the scope, integrations, and design.

Let's start

What's next
1. Share your requirements
2. Analyze them with our experts
3. Get a detailed pricing
4. Kick off the project
If you have any questions, email us info@nexterse.com

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