Full-stack
engineering services.
Architecture, development, deployment, and operations — delivered by a single accountable team across every layer of your stack.
Custom Web Applications
Full-stack platforms engineered from scratch. Customer portals, admin dashboards, booking systems, member sites, and multi-tenant SaaS products — architected for reliability.
Website Design & Dev
Professional marketing sites, landing pages, and multi-page corporate websites. Accessible, performant, search-optimized, and engineered to convert.
E-Commerce Stores
Custom storefronts with integrated payment processing, inventory tracking, order management, and analytics. Subscription billing and recurring revenue supported.
Process Automation
Replace manual operations with reliable software. CRM integrations, email sequences, data pipelines, scheduled reporting, and custom workflow engines.
API Development
New APIs or connections to existing systems. Payment gateways, third-party services, data feeds, mobile backends — secure by default and fully documented.
Database Architecture
Schema design, migration planning, query optimization, and ongoing management. Structure your data for reliability, integrity, and speed.
Security & Performance
SSL configuration, vulnerability assessments, OWASP reviews, performance profiling, CDN deployment. We harden what you’ve built and make it measurably faster.
Managed Operations
Monthly retainers covering development, monitoring, backups, patches, and priority support. An embedded engineering team without the cost of hiring in-house.
Mobile-First Redesigns
Rebuild outdated or broken sites with modern responsive architecture. We audit, restructure, and ship a site that works on every screen size.
Deployment & ongoing operations.
Keep your application fast, secure, and online. Three managed-operations tiers — upgrade at any time as your needs change.
- VPS hosting (shared resources)
- SSL certificate included
- Automated daily backups
- 99.9% uptime guarantee
- Standard email support
- Code updates & bug fixes
- Performance optimization
- Priority support
- Dedicated VPS resources
- SSL certificate included
- Daily backups with restore
- 99.9% uptime guarantee
- Security patches & updates
- Monthly bug fixes (up to 2 hrs)
- Performance monitoring
- Priority email & chat support
- Dedicated VPS (premium tier)
- SSL + firewall + DDoS protection
- Real-time backups & restore
- 99.99% uptime SLA
- Ongoing development (up to 5 hrs)
- Performance optimization
- 24/7 monitoring & alerting
- Same-day priority support
All plans include initial domain & DNS configuration. Annual billing available (two months complimentary). Custom enterprise plans available for larger deployments and multi-site portfolios.
Common questions.
The questions we field most often from clients evaluating an engagement.
How do you price projects?
Every engagement begins with a written scope and a fixed-price quote. There are no hourly billing surprises and no scope-creep upcharges. If you need a change after the contract is signed, you receive a written change order with its own fixed price — you decide whether to accept it before any additional work happens.
Do I own the source code when the project is delivered?
Yes. Full source-code ownership transfers to you on delivery and final payment. You receive the complete repository, deployment scripts, infrastructure configuration, and documentation. Nothing is gated behind a proprietary platform you can’t leave.
How long does a typical custom build take?
Most projects fall into one of three brackets: a small marketing site or landing application is roughly 1–3 weeks; a mid-sized web application or e-commerce store is roughly 4–8 weeks; a complex multi-tenant platform or operations system is 8–16+ weeks. The written proposal you receive after our discovery call includes a milestone-by-milestone timeline.
Where is DPM Enterprise based and who will I be working with?
DPM Enterprise LLC is an independent software engineering firm based in Quincy, Illinois, founded in 2026 by Derek Deppermann. You work directly with the engineer building your software — there are no account managers, no project-management middlemen, and no offshore subcontractors. We serve clients across the United States.
Do you subcontract work to other agencies or offshore teams?
No. Every line of code we deliver is written in-house. This is a deliberate constraint — it’s the only way we can guarantee architectural consistency, accountability, and the security posture our clients depend on.
Do you offer ongoing maintenance and support after launch?
Yes. Three managed-operations tiers are available, starting at $49/month for essential hosting and SSL maintenance, up through $299/month for full proactive operations including ongoing development hours, real-time backups, and a 99.99% uptime SLA. See the pricing section above for the full breakdown.
What technologies do you build with?
We architect each project around what fits the requirements rather than forcing a single stack. Common choices include Node.js / Express, React, Next.js, PostgreSQL, Supabase, Stripe, and Nginx, deployed on managed VPS infrastructure. We avoid lock-in to proprietary platforms and choose technologies you or another engineer can maintain long-term.
How do we get started?
Send us a short description of what you need to build through the contact form or call us at (309) 200-5279. We respond within 24 hours with either a written proposal or a request for a brief discovery call — whichever fits the project. There’s no commitment until you countersign the proposal.
Not Sure Which Service You Need?
Describe your situation — we’ll recommend the right scope, architecture, and engagement model. No commitment, no sales pressure.