Custom CRM & ERP Development
Custom CRM development for teams whose process doesn't fit Salesforce, HubSpot, or NetSuite. We build CRM and ERP systems around your actual workflow, with the systems integration and role-based access a real system of record needs.
- You own the code
- Fixed price before work starts
- Reply within one business day
5
Disconnected systems unified into one workflow (Tidewell Underwriting)
98%
Client retention
24hr
Average response time
Custom CRM and custom ERP development
Not sure what you need yet?
Tell us the problem on a free call. We will suggest what to build first and what can wait.
Book a free callCustom CRM builds
Pipelines, qualification rules, and reporting that match how your reps actually sell, instead of a generic funnel bent to fit whichever tool you bought.
ERP implementation & migration
Inventory, scheduling, and operations logic built for your actual business model, migrated off legacy systems without a risky single-cutover weekend.
Systems integration
Deep integration with your identity provider, accounting software, and the tools you already run. A new system of record has to work with what's there.
Role-based access & audit trails
Finance, sales, and ops each see exactly what they need, with an audit trail that holds up when someone asks who changed what and when.
When a custom CRM beats an off-the-shelf one
If one of these sounds familiar, that is usually the moment we get the call.
Talk it throughPer-seat pricing is starting to work against you at scale
Once your headcount grows, per-seat SaaS pricing on a CRM or ERP can flip from a convenience to your largest recurring line item, so the math is worth running honestly.
Your team re-keys the same data into multiple systems
If a claim, order, or lead touches five disconnected tools and someone manually re-enters it into each one, that's pure process friction a unified system removes directly.
Your sales or ops process doesn't match the tool's template
Workarounds, side spreadsheets, and rituals everyone just knows are a sign the off-the-shelf tool is costing you more than its license fee.
You're migrating off a system nobody trusts anymore
Years of workarounds and permission exceptions in a legacy CRM or ERP usually mean a rebuild people don't route around beats another patch.
How we run this engagement
Process audit
Map how your team actually sells or operates, exceptions included.
Architecture
Design the data model, roles, and integrations around that real process.
Phased migration
Run in parallel with the legacy system until the new one has earned trust.
Handoff & support
Documentation, training, and an ongoing support plan.
How pricing works
Step 1
Free call
Tell us what you need. We ask questions and suggest what to build first.
Step 2
Written scope
You get every feature of the first version listed in writing.
Step 3
Fixed price
One price for that scope, agreed before any work begins.
Step 4
Build and launch
You see progress as we build, then we launch and stay on for support.
A web app MVP starts from
$1,000
The final price depends on the features you need. The calculator gives you a realistic range in a couple of minutes.
Included in every project
- Code and accounts in your name
- Testing before launch
- Support after launch
How working with us compares
Who you talk to
Avenva Solutions: The engineers building it
- Typical agency:
- Usually an account manager
- Freelancer:
- One developer
How you pay
Avenva Solutions: A fixed price, in writing, before work starts
- Typical agency:
- Often hourly or open ended
- Freelancer:
- Usually hourly
Who owns the code
Avenva Solutions: You, from day one
- Typical agency:
- Depends on the contract
- Freelancer:
- Depends on the person
Skills on the project
Avenva Solutions: Design, build, testing, launch, and support
- Typical agency:
- A full team
- Freelancer:
- One person's skills
After launch
Avenva Solutions: We stay on for fixes and updates
- Typical agency:
- Often a separate support contract
- Freelancer:
- Depends on their availability
Built on a proven, modern stack
Node.js
The API layer connecting your CRM/ERP data to every tool that needs it.
PostgreSQL
Audit-grade data integrity for records that matter when someone asks who changed what.
TypeScript
Types that document your business rules and catch mismatches before production.
.NET
A strong fit when your existing enterprise stack is already Microsoft-centric.
REST/GraphQL APIs
Integrates your accounting, identity, and ops tools instead of replacing all of them.
Docker
Consistent environments from development through the production system of record.
Work we've shipped like this
“Communication was excellent throughout. No black-box weeks, no surprises at launch. Just steady, visible progress.”
Daniel Osei
COO, Tidewell Underwriting
Related insights
Things people ask before starting
Can't find what you're looking for? Reach out and we'll answer directly.
Why build a custom CRM instead of configuring Salesforce or NetSuite harder?
Configuration has a ceiling. When your workflow doesn't fit the tool's model, or per-seat pricing starts working against you at scale, a custom system usually costs less over a few years than continuing to force-fit one. We'll say so honestly if your case doesn't clear that bar yet.
How do you migrate data without losing anything or causing downtime?
A phased rollout: schema mapping and validation between old and new systems, a parallel-run period where both operate side by side, and an agreed rollback trigger decided before migration day, not during it.
Can this integrate with our existing accounting and identity systems?
Yes. SSO through your existing identity provider and integration with the accounting/ops tools you already run is standard scope, not an add-on tacked on later.
Who owns the system once it's built?
You do. You get full source and infrastructure access, documented so your own team (or another vendor, if it comes to that) can maintain it without depending on us.
How long does custom CRM or ERP development take?
A focused custom CRM can be in your team's hands within a few weeks. A full ERP implementation or migration is delivered in phases, with the timeline set by the modules and integrations involved. We scope a concrete timeline after the process audit, not before it.
