Custom ERP, CRM & B2B Software Development Services
We design and deliver bespoke, high-performance systems architecture to replace legacy enterprise monoliths. Our team implements dedicated Next.js platforms, zero-downtime database schemas, and tailored integrations that fit your exact business operations—with zero licensing taxation and complete IP ownership.
In short: ERPStack delivers 6 lines of custom software development services — ERP platforms, CRM systems, headless Payload CMS content architectures, cloud migration and infrastructure consulting, headless eCommerce, and security and compliance platforms. Builds run 6 to 30 weeks on fixed-fee milestones from $20,000, ship on Next.js, TypeScript and PostgreSQL, deploy into your own AWS or Microsoft Azure account, and transfer 100% of the source code at handover with zero per-seat licensing.
Engagement facts, before the call
6 service lines
ERP, CRM, headless CMS, cloud migration, eCommerce, and security platforms.
$20,000 to $250,000+
Published fixed-fee bands per service line, quoted in full after discovery.
6 to 30 weeks
End-to-end delivery, with the first working vertical slice inside 4 weeks.
100% code ownership
Repository, Terraform infrastructure-as-code, and database keys transfer at handover.
Consolidate business workflows into a unified, high-performance platform. We engineer modular ERP databases with zero seat licenses, deployed to your AWS or Azure infrastructure with 100% IP rights.
Deploy fast, headless content architectures powered by Payload CMS and Next.js. Engineered for sub-50ms edge rendering latency with dynamic previews and next-intl multi-market localization.
Refactor legacy mainframes into high-availability cloud platforms using Terraform. We containerize monoliths using Docker and employ the Strangler Fig pattern for zero-downtime cutover.
Drive conversions with pre-rendered Next.js store layouts engineered to load in under 100ms. We integrate secure Stripe checkout and multi-warehouse real-time inventory synchronization.
Exorbitant per-seat license fees for rigid, generic platforms that fail to align with your core business logic.
What we do: workflows mapped to your schema
We map your operational workflows into customized modules and database tables. The software conforms entirely to your business processes, eliminating workarounds.
What we don't do: vendor release queues
Extreme feature request queues and sluggish update lifecycles dictated by third-party SaaS vendors.
What we do: CI/CD you control
Our engineers integrate continuous delivery pipelines directly into your environment, allowing you to deploy critical features, API integrations, and schema updates in days.
What we don't do: vendor lock-in
Vendor lock-in and database retrieval bottlenecks when attempting to extract or migrate your organizational data.
What we do: repository and database ownership
You retain 100% ownership of the repository, database records, and cloud deployment scripts from day one. You have direct database access with zero restrictions.
Our Delivery Methodology
Phase DiscoveryWeeks 1-2
Business Logic Mapping
We embed with your domain leads to map database relationships, perform threat modeling, document legacy integration surfaces, and produce a complete systems blueprint.
Phase Sprint 0Week 3
Foundation & Infrastructure
Provisioning the Next.js monorepo, establishing Drizzle ORM schemas, configuring Docker containers, and setting up GitHub Actions pipelines with Semgrep and ESLint audits.
Phase ExecutionMonths 2-6
Agile Delivery
Agile bi-weekly sprints delivering testable, fully functional vertical slices of business logic. Every release is validated with comprehensive Playwright E2E suites.
Phase HandoverFinal Month
Code Ownership & Training
We execute complete code custody handovers, transferring git control, Terraform state configs, and cloud credentials, combined with comprehensive technical onboarding.
How We Price
Fixed-Cost Milestone Pilots
We reject variable hourly billing and ambiguous agency timelines. Every project is scoped into concrete, testable milestones with predefined deliverables. You pay a fixed price for each milestone only after verifying it in your staging cloud enclave.
Zero Recurring Licenses
Commercial SaaS providers charge per-user seat fees that tax your operational growth. With ERPStack, you own the entire codebase, database entities, and hosting infrastructure. There are zero subscription fees—your systems run at pure hosting cost.
Questions buyers ask before choosing a service line
What does ERPStack actually build?
Six lines of custom software development services: ERP platforms, CRM systems, headless Payload CMS content architectures, cloud migration and infrastructure consulting, headless eCommerce storefronts, and security and compliance platforms. Every engagement ships on the same stack — Next.js, TypeScript, and PostgreSQL with Drizzle ORM — and deploys into your own AWS or Microsoft Azure account. You own 100% of the source code, and there are no per-seat licences to renew.
How much does a custom build cost?
Fixed fees, quoted after discovery, in published bands. Custom ERP is quoted in three tiers: Standard B2B Operations at $25,000 – $60,000 over 6–8 weeks; Compliance & Multi-Tenant at $60,000 – $150,000 over 10–16 weeks; Enterprise Scale Infrastructure at $150,000 – $250,000+ over 18–24 weeks. A custom CRM starts at $20,000, and cloud migration services run $30,000 to $220,000 depending on how much refactoring the legacy estate needs. Every band is published on the individual service page, so you can size the work before booking a call.
How long does delivery take?
Most custom software development engagements run 6 to 26 weeks end to end, split into fixed-fee milestones you sign off in your own staging environment. A custom ERP runs 6 to 24 weeks depending on tier; a headless Payload CMS build takes 6 to 12 weeks; a security and compliance platform 8 to 26 weeks. The first working vertical slice usually lands inside the first 4 weeks, so progress is visible long before handover.
Who owns the code and the data at the end?
You do, without qualification. The repository, the Terraform infrastructure-as-code, the database, the deployment keys, and the runbooks all transfer at handover, and everything runs inside your own cloud account throughout the build. That is the structural difference between these development services and a SaaS subscription: no vendor-hosted dependency to renew, no per-user seat fee, and no data extraction charge if you later take the work in-house.
Do you integrate with the systems we already run?
Yes — most engagements are integration-heavy rather than greenfield. We build type-safe API boundaries over REST, GraphQL, or tRPC, plus background workers that sync with NetSuite, SAP, Salesforce, HubSpot, Odoo, or Microsoft Dynamics 365. Legacy databases are migrated with reconciled row counts and a parallel-run window, so the old system keeps running until the custom development has been verified against it record by record.
Are the systems compliance-ready?
They are engineered to be. Our security and compliance services build against the HIPAA, SOC 2 Type II, GDPR, PCI DSS, and ISO 27001 control baselines: server-side RBAC, AES-256 encryption at rest, TLS 1.3 in transit, and append-only audit logs. ERPStack itself holds none of those certifications — a certificate is issued to your organisation by the auditor you appoint — but every control that auditor tests is implemented in code and documented.
What happens after launch?
Nothing forced. Because you own the repository and the cloud account, your own engineers can maintain the platform with no vendor dependency: the codebase follows standard Next.js and TypeScript practice rather than a proprietary framework. Teams that want continuity take an SLA retainer covering dependency upgrades, feature development, and 4 architecture reviews a year. Teams that decline lose no capability and pay nothing further for these services.
Ready to eliminate your licensing overhead?
Book a free architect review. We'll map your current stack against rigorous standards and deliver a written blueprint within 48 hours.