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All servicesAvailable for select projects
Backend engineering & integrations
Build the Reliable System Behind the Product Experience
I develop APIs, data models, authentication, payments, webhooks, and integration workflows that connect product interfaces to dependable backend behavior.
Backend work designed around clear contracts, validation, permissions, failure states, and maintainable data flows.
01 / The real problem
The interface is only as reliable as the system behind it
Products become fragile when data rules live in scattered frontend code, integrations fail silently, or permissions are applied inconsistently. The backend needs to make important behavior explicit and testable.
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Third-party services are connected without reliable retry or error handling.
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Authentication exists, but authorization rules are inconsistent across features.
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Database models no longer represent the real business workflow.
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Payments, webhooks, and background actions are difficult to trace or debug.
02 / What I can build
A clear, usable scope—not a vague capability list.
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Third-party API integrations
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Authentication and permission workflows
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Stripe subscriptions and payments
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Webhook processing
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Database models and migrations
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Prisma, PostgreSQL, and MySQL workflows
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Backend logic and validation
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API documentation and handover
03 / Relevant technology
The stack follows the work.
Technology choices are matched to the scope, existing systems, and delivery constraints—not added to make the list longer.
Backend
Node.jsKoa.jsSpring BootREST APIs
Data
PrismaPostgreSQLMySQL
Infrastructure & services
StripeAWSDockerWebhooks
04 / How the work moves
A defined path from scope to handover.
Discovery Call
We discuss the goal, requirements, users, workflows, timeline, and technical direction.
Scope & Architecture
I define the core features, data structure, integrations, user flows, and delivery plan.
Build & Integrate
I develop the frontend, backend, APIs, AI workflows, dashboards, and required integrations.
Test, Launch & Handover
I test the workflows, help with deployment, document the setup, and hand over the project clearly.
05 / Engagement options
Start with the scope that fits where you are now.
These are scope guides, not instant quotes. The final plan depends on requirements, existing systems, integrations, and delivery risk.
Focused backend scope
API Foundation
For one API module, integration, or backend workflow with a clear contract.
Typical timeline
1–3 weeks
Scoped after discovery
- Endpoint design
- Validation
- Database changes
- Authentication hook
- Basic documentation
Scope note: One bounded domain or third-party integration.
Connected application system
Integrated Backend
For products needing multiple APIs, permissions, data flows, and external services.
Typical timeline
3–6 weeks
Custom project quote
- API modules
- Role permissions
- Integration workflows
- Webhook handling
- Error and audit states
Scope note: Infrastructure and migration risk are assessed before the final scope.
Advanced backend work
Production Systems
For larger systems, complex migrations, or business-critical integration layers.
Typical timeline
6+ weeks
Phased engagement
- Service architecture
- Advanced data workflows
- Payment or event processing
- Performance review
- Operational documentation
Scope note: Delivered in phases; cloud costs and external service fees are separate.
06 / This service is best for
A strong fit when the outcome is clear.
- Products that need a new or expanded API layer
- Teams integrating payments or third-party platforms
- Applications with complex roles and data rules
- Frontend teams needing reliable backend implementation
- Businesses connecting previously separate systems
07 / Relevant experience
Backend experience connected to real product needs
Relevant experience includes REST APIs, protected application workflows, PostgreSQL-backed products, subscription systems, AI service integrations, webhook automation, and server-side validation for dashboard applications.
REST APIsPostgreSQLStripeWebhooks
Explore project work08 / Common questions
Clear answers before the first call.
If your question is specific to an existing product or technical constraint, bring it to the discovery call.
API Integration & Backend Systems
Ready to discuss this project?
The best next step is a short call. We'll review your idea, technical requirements, timeline, and the right way to build it before committing to development.