| Engagement Model | Confirmed Price Range | Typical Budget & Cadence | Timeline / Turnaround | Suitable Projects |
|---|---|---|---|---|
|
Custom Web Service Build
Fixed milestone contract with documented acceptance gates. |
$5,000 – $50,000 per project | $15,000 – $50,000 typical project investment | 1–2 weeks for initial operational version | Internal staff portals, custom operational dashboards, warehouse sync tools, multi-tenant B2B portals. |
|
Maintenance & Retainer Support
Continuous system monitoring, security patches, and SLA incident response. |
$250 – $1,500 per month | $250, $750, or $1,500 monthly recurring retainer | Under 2 hours critical SLA incident response | Live web applications requiring uptime guarantees, regular dependency updates, and automated backups. |
|
Hourly Technical Refactoring
Senior full-stack engineering billed against verified git commits. |
$75 – $160 per hour | 10-hour blocks minimum engagement sprint | Sprint-based immediate triage available | Database query optimization, API integration fixes, legacy code modernization, third-party webhook debugging. |
We never quote arbitrary figures over lunch. Costs are calculated directly from data complexity, third-party integration count, and team seniority required to execute cleanly.
What your formal quotation depends on
Before issuing a binding milestone schedule, we evaluate six concrete technical factors:
The number of database tables, relational schemas, user permission tiers, and real-time state synchronization requirements.
Whether wireframes, API contracts, and user flows exist, or whether system architecture must be designed from scratch.
Solo lead engineering by Ivan Petrov versus dedicated multi-specialist sprints for accelerated rollout windows.
Senior full-stack engineering with direct architectural ownership, ensuring high performance and zero junior rework.
Stripe/billing pipelines, legacy SQL endpoints, enterprise ERPs, warehouse hardware APIs, and external webhook receivers.
Deployment target: managed cloud (AWS, DigitalOcean), bare-metal VPS, containerized Docker clusters, and automated CI/CD runners.
In fixed-scope builds ($5,000–$50,000), payment installments correspond strictly to working demonstration gates deployed to staging servers. You never pay for unverified promises.
How clients compare Silverpatway
When evaluating engineering partners, prospective clients compare on five concrete criteria:
- Rate Structure: Transparent hourly billing ($75–$160/hr) or capped milestone scopes ($5,000–$50,000) versus vague open-ended agency retainers.
- Engineering Seniority: Direct hands-on execution by Ivan Petrov (active since 2018) rather than junior offshore subcontracting.
- SLA Enforceability: Contractual uptime and response guarantees ($250–$1,500/mo) with under 2-hour critical response.
- Code Ownership: 100% intellectual property transfer, direct commit access to client Git repositories, and complete documentation.
- Registration & Accountability: Licensed North Carolina business entity (Registration No. 1234567) operating out of Charlotte.
Request a commercial scope review
Provide a high-level summary of your system requirements. We respond with an itemized milestone breakdown or hourly estimate within one business day.