SuiteScript and SuiteApp work for NetSuite operators who have hit the limits of configuration. Senior US-based developers, source control discipline, and managed services in place from day one to support what we build.
Most custom development requests come from buyers who have not exhausted configuration first. When SuiteFlow, a SuiteApp, or a pre-built integration would solve it instead, we say so before any contract.
Industry-specific calculations like regulated commodity pricing or complex contract terms. Proprietary revenue recognition rules. Specialized inventory valuation methods that do not match any out-of-the-box flow.
Custom development at GSI runs through four stages, with customer sign-off between each. No pricing is provided until the software development specification (SDS) is written and reviewed by the development team and validated by the project manager and line of business manager.
A working session to understand the current issue, the as-is and to-be states, and the operational use cases. Output: a Software Development Specification (SDS) document with workflow diagrams and use cases. You review and approve before we move on.
Our development team writes the technical design, which our consulting team validates against the SDS and against NetSuite governance limits. The constraint check happens before code, not after.
Agile sprints against the technical design, deployed through SDF for source control and rollback. Same developer who scoped the work also builds it, minimizing knowledge-transfer overhead.
Sandbox testing, your sign-off, then production cutover. SuiteCare picks up the code on day one as part of the managed services handoff, ready for upgrade testing through every NetSuite release.
Why no quote until the SDS is reviewed: estimates given before requirements are clear are usually wrong, and a wrong estimate creates more pain on both sides than a delayed quote. The scoping discipline up front is a real cost, and it is what makes fixed-fee pricing work after.
Pricing developer work that a senior consultant should be doing overcharges customers. We are explicit about which category each service falls into so the right people are pricing the right work.
Server-side, client-side, user event, scheduled, map/reduce, RESTlet, and Suitelet scripts. Common patterns: custom approval routing beyond SuiteFlow capabilities, complex revenue recognition automation, integration endpoints for systems without published connectors, scheduled data sync with external warehouses or PIM systems, custom dashboard tiles with domain-specific KPIs. All code follows NetSuite governance limits, written with upgrade survivability in mind, deployed through SuiteCloud Developer Framework (SDF) for source control and rollback.
NetSuite 2026.1 introduced AI-native developer tooling. We are rolling adoption into our practice through 2026; some of the team are already using AI-assisted coding on individual modifications.
AI coding companion in VS Code (Cline plugin) that generates SuiteScript 2.1 code, unit tests, and SuiteCloud Developer Framework (SDF) objects from natural language prompts. Increases developer productivity on routine work.
How we price against AI productivity: we expect AI-assisted coding to reduce development cost on routine work as adoption rolls out. We do not assume that productivity gain in current pricing. Pricing is set against the work as it is delivered today, not against what may be possible later.
The development practice on the left, the three differentiators on the right.
Most GSI NetSuite developers come from finance or accounting backgrounds before moving into code. They read your chart of accounts the way your auditor does. When you insert an item on a sales order, you are allocating inventory and triggering downstream GL events. A developer who does not understand soft versus hard allocation flags, GL impact at order placement versus shipment versus invoice, AR and AP timing, and consignment vendor implications can produce code that ships and breaks the close. We hire developers who understand the accounting before they touch a script.
Our default is fixed-fee pricing for everything we can scope cleanly, and the scoping process is exactly how we get there.
We do not provide pricing until the Software Development Specification has been written, reviewed by the development team, and validated by the project manager and line of business manager. The reason is practical: estimates given before requirements are clear are usually wrong, and a wrong estimate creates more pain on both sides than a delayed quote.
Engagement size varies widely. We have delivered fixed-fee custom development that runs from a few thousand dollars to multiple six figures, depending on scope, integrations involved, and validation effort required. Smaller, simpler-looking work is the most often underestimated by buyers. Even moving a few fields on a PDF invoice typically runs three to four hours once sandbox access, testing, revisions, customer approval, deployment, and time recording are accounted for. Nothing in custom development is genuinely "just a quick change."
Where the work cannot be cleanly scoped in advance (ongoing or evolving needs), we propose hourly engagements with scoping milestones built in to convert to fixed-fee as soon as requirements are clear. Dedicated-resource arrangements for customers with continuous custom-dev needs run through SuiteCare managed services rather than as separate engagements.
Configuration and SuiteFlow first, every time we can. We tell you which tier solves your problem before we write a line of code. The scoping call is where that determination gets made.
It depends on the scope, and we do not quote until requirements are documented and reviewed. The range across our engagements is wide, from a few thousand to multiple six figures. The scoping call surfaces the right answer.
You own the code we write for you. GSI retains IP rights to the underlying patterns and methodology under standard contract terms. The deliverable, the actual code running in your NetSuite, is yours.
We write to NetSuite governance limits and SuiteScript best practice with upgrade survivability designed in. We validate against each release ahead of NetSuite production rollout, and SuiteCare picks up upgrade testing as part of the managed service.
Yes, as long as the code is not locked. We do this regularly, often when the original developer has moved on or the original partner is no longer available. We start with a code audit, document what is there, and recommend what stays, what gets refactored, and what should be replaced.
We are rolling AI-assisted development into our practice through 2026. We do not currently price against productivity gains we have not yet captured. As adoption matures, we expect AI-assisted coding to reduce cost on routine custom-dev work. Quality discipline (peer review, test coverage, governance compliance) is unchanged regardless of how the code gets written.
Walk through what you are trying to build. Most calls end one of three ways: configuration solves it, we write an SDS for the custom dev scope, or we point you to a partner who fits better.
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