"We scale the processes and the software for growing companies. We work with existing ERP/OMS — and provide automation that far exceeds out-of-the-box functionality."
HLX Studios is a Brooklyn-based software development studio & consultancy focused on eCommerce. For 15+ years we have specialized in Sellercloud — building automations, direct-database integrations, custom reports, projections and financials that go well beyond stock features. We act as an extension of your leadership team, comparable to a fractional CTO for your Sellercloud operations.
15
years on sellercloud
350
integrations supported
150
million orders / yr ecosystem
24
hour automated workflows
Eliminate manual work in Sellercloud. We build scheduled tasks, order-rule extensions and custom plugins that handle the workflows your team currently does by hand — without errors or key-person dependence.
We work directly with the Sellercloud SQL database to deliver insights and operations the UI can’t. Safe, read-replica patterns, indexed views and stored procedures — the way enterprise teams should be working with their data.
Catalog, sales, inventory, warehouse, shipping and vendor reports tailored to how your business measures success — delivered to dashboards, email or pushed into your BI stack.
Predictive purchasing, demand forecasting, replenishment models and cash-flow projections built on top of your real Sellercloud data — so buying decisions stop being guesswork.
True channel-level P&L. Landed cost, FBA reimbursement reconciliation, marketplace fee analysis and exports tuned for QuickBooks, NetSuite and your accountants.
Custom integrations with Amazon, Walmart, eBay, Shopify, EDI partners, 3PLs and ERPs. We extend the Sellercloud Web Service API to do exactly what your business requires.
Warehouse workflow design, Skustack rollouts, bin/zone strategy, cycle-count automation and pick-pack optimization for high-velocity Sellercloud operations.
From client data we surface insights so better, cheaper, faster decisions can be made — dashboards your team actually opens every morning.
Most custom Sellercloud development qualifies for the IRS Section 41 R&D tax credit. We help structure engagements so the US Government heavily subsidizes the cost of your innovation.

Custom rules & plugins beyond the UI

Direct-database custom reports

Vendor and 3PL EDI integrations

True margin by SKU & channel

Forecasting & predictive purchasing

Mass updates & data quality

Warehouse workflow optimization

Reimbursement & fee analysis
We get aligned with your goals and identify the operational pain points slowing your Sellercloud operation down — from manual data entry to channel-level profitability blind spots.
Output: a written scope, risk assessment and recommended quick-wins. Most discovery engagements take 1–2 weeks and can be billed against the Section 41 R&D credit.
We map your Sellercloud schema, integrations and current workflows. Where appropriate we set up a read-replica or sandbox so we can analyze data without ever touching production.
Output: a data model, integration map and a backlog of automations and reports ranked by ROI — not by what’s easy to build.
We build in short, reviewable iterations: plugins, scheduled jobs, custom reports, dashboards, EDI maps and API integrations — with version control, code review and proper QA.
Output: working software delivered every sprint, documentation your team can maintain, and knowledge-transfer sessions so you’re never locked in to a single vendor.
Once core automations are live we focus on scale — new channels, new warehouses, predictive purchasing, financial reconciliation and the next layer of competitive advantage.
Output: a long-term partnership comparable to having an in-house Sellercloud engineering team — without the headcount cost.
Pick the engagement that matches your stage. All plans include direct access to senior engineers — no offshore handoffs, no junior account managers.
Prefer to skip the form? Message us directly on WhatsApp and a senior engineer will reply — usually same business day.