Custom builds · Managed infra · Security · Applied AI

BUILT TO SPEC. RUNNING 24/7. SECURED END TO END.

Signature PC designs, assembles and maintains high-performance computing for individuals, creators and enterprises — custom workstations, virtualized infrastructure, hardened security and production-grade AI systems, delivered as one accountable service.

Request a quote Explore services
72h bench validation 3-year onsite warranty 24/7 managed NOC

01 — What we do

Five disciplines.
One accountable partner.

Most firms sell a product. We engineer an outcome — hardware chosen for the workload, infrastructure documented to the cable, security that holds under audit, and AI that does actual work. One contract, one number to call.

Every engagement is scoped by an engineer — not a salesperson. If you don't need us, we'll tell you on the first call.

01

Custom PC Builds

Consumer & Business

Hand-assembled, cable-managed and burn-in validated on our bench for 72 hours before it ships. Every build arrives with full benchmarks, a complete parts manifest and a written warranty — from enthusiast gaming rigs to AI inference stations.

  • Gaming, creator & streaming rigs
  • Business & engineering workstations
  • AI inference & training stations
  • Overclocking, tuning & thermals
  • Component sourcing & price arbitrage
  • White-glove delivery & setup
Typical engagementScoped in 48h · built in 5–10 days
Scope this service
02

Server & Network Management

On-prem & Hybrid

From a single office rack to multi-site infrastructure: virtualization, storage, 10 GbE fabrics and 24/7 monitoring — designed, deployed and managed by the same engineers who built it. No hand-offs, no black boxes.

  • Proxmox, ESXi & Hyper-V virtualization
  • Rack & cage design and installation
  • 10/40 GbE structured cabling
  • Ubiquiti, Cisco & Fortinet networking
  • Proactive monitoring & alerting
  • Patching, backup & DR runbooks
Typical engagement2–4 weeks design → zero-downtime cutover
Scope this service
03

Information Security

Zero-Trust, End to End

We install and configure defensible security: perimeters that hold, endpoints that self-report, and backups that have actually been restored. Security treated as an engineering discipline — not a pile of products with login screens.

  • Firewall & SD-WAN design (Fortinet, pfSense)
  • EDR deployment on every endpoint
  • Zero-trust VPN & identity (SAML/SSO)
  • 3-2-1 encrypted backup strategy
  • Pen-test coordination & remediation
  • NIST / SOC 2 / ISO 27001 alignment
Typical engagementRisk assessment week one · hardened baseline week two
Scope this service
04

Home Automation

Residential & Estates

Whole-home systems built on Home Assistant and professional-grade hardware: lighting, climate, AV, access and security that operate as one calm, reliable whole — running locally, on your network, without a single third-party cloud dependency.

  • Whole-home design & documentation
  • Lighting, shade & climate control
  • AV integration & multi-room audio
  • Cameras, access control & alarms
  • Local-first control (works offline)
  • Family training & handover
Typical engagement1–2 day survey · phased install over 2–3 weeks
Scope this service
05

Agentic AI

Local & Applied

We deploy AI that actually does work: local LLM clusters, retrieval pipelines and autonomous agents wired into your real tools — sized correctly, governed, and running on hardware we maintain. Your data never leaves the building if you don't want it to.

  • Local LLM clusters (Ollama, vLLM)
  • RAG pipelines over internal data
  • Agents for ops, support & back office
  • GPU sizing & cluster builds
  • Data governance & guardrails
  • CRM, ERP & comms integrations
Typical engagementFeasibility in 10 days · first agent live in 30
Scope this service

02 — How we work

From first call to standing support.

01

Discovery

A working session, not a sales pitch. We map your workloads, constraints and failure modes — and tell you when you don't need us.

02

Architecture

A written design: bill of materials, network diagrams, security posture, cost model and timeline. You approve every line.

03

Build & Validation

Assembled and burn-in tested on our bench. 72-hour stress test, benchmarked, documented, photographed.

04

Deployment

On-site cutover by senior engineers. Zero-downtime where physics allows; a rollback plan where it doesn't.

05

Managed Support

24/7 monitoring, monthly reports, quarterly reviews. One contract, one number to call, one team accountable.

0+

Systems delivered

0%

Monitored uptime · 12-mo rolling

0h

Average incident response

0%

New business from referrals

03 — Security posture

Hardened by default,
verified on schedule.

Every system that leaves our bench — consumer or enterprise — ships with a security baseline: encrypted disk, current firmware, managed accounts and monitored backup. For businesses, it becomes a program: audited quarterly, reported monthly, owned by us.

SOC 2 alignedISO 27001NIST 800-171GDPR ready
NOC // CHESTERFIELD — LIVE UPLINK ............ OK EDR SYNC ........... 02:14 BACKUP VERIFY ...... PASS ALERTS ............. 0 UPTIME ............. 99.98% NOC · Chesterfield VA · Live feed

Zero-trust access

Every session verified — identity, device and location — whether you're in the office or on the road.

EDR on every endpoint

Continuous threat detection with automatic containment. Nothing connects without being seen.

3-2-1 encrypted backups

Three copies, two media, one off-site and immutable. Restored and tested quarterly — not assumed.

Quarterly access reviews

Accounts, privileges and network segments audited on a schedule and reported in plain language.

24/7 monitoring & alerting

Our NOC watches your stack around the clock. If it stirs at 3 a.m., we're already on it.

Compliance-ready documentation

Policies, evidence and diagrams kept audit-ready, so your certifying body finds answers — not excuses.

They rebuilt our entire infrastructure over a single weekend and it has not blinked since. First vendor we've met who documented more than they billed.

Dana OkaforCOO · Northwind Commerce

The AI cluster they sized for us does in one afternoon what our old setup couldn't do in a day. And when it needs care, one call handles it.

Priya RamanCTO · Vektor Robotics

Our home just works. The kids think it's magic. The fact that it runs entirely on our own network is why I sleep fine.

M. & E. AlderHomeowners · Chesterfield

04 — FAQ

Answers, before you ask.

Something more specific? An engineer — a human one — answers sales@sigpc.com within one business day.

Both. Roughly 60% of our infrastructure work is with 5–50 person businesses. The discipline is the same at every scale — the same monitoring, the same documentation, the same 24/7 NOC. A 12-person firm and a 400-person firm both deserve systems that don't wake anyone up at 3 a.m.

Most builds are scoped within 48 hours and leave the bench in 5–10 business days, which includes the full 72-hour stress validation. AI and workstation clusters with enterprise components typically run 2–4 weeks depending on component lead times — we give you a dated schedule before we start, not after.

24/7 monitoring with real alerting, patch management, backup verification, endpoint security, helpdesk support with published SLAs, monthly status reports and a quarterly architecture review. One contract, one invoice, one team that has context on your environment because the same people built it.

Yes — and for many businesses it's the right call because sensitive data never leaves the building. As a rule of thumb: 16 GB of VRAM runs 7–14B parameter models comfortably, and 48 GB+ handles 70B quantized. We size to your actual workload — tokens per day, latency tolerance, concurrency — rather than selling you the biggest GPU we can.

We do risk assessments, network posture audits and endpoint reviews on-site, and we'll coordinate and remediate alongside your external penetration tester. We're engineers, not a compliance checklist — the deliverable is a hardened system with the paperwork to prove it.

Every build carries a 3-year onsite warranty on the whole system, not a patchwork of component warranties — if the machine misbehaves, we come to you. Add Signature Care for priority response, an annual tune-up and next-business-day parts replacement. Enterprise builds can be extended to 5 years.

05 — Contact

Tell us what you're building.

A rough idea is fine. A spec sheet is better. An engineer reads every request personally — no ticket queues, no auto-responses, no mailing list.

Workshop & NOC13307 Prince James Drive · Chesterfield, VA 23832
HoursMon–Fri 8:00–18:00 ET · NOC staffed 24/7/365
Response within one business day — usually faster

Quote request

RESPONSE < 1 BUSINESS DAY
Please enter your name.
Please enter a valid email address.
Please choose a service.
Tell us a little more (at least 10 characters).
Encrypted in transit. Never sold, never shared, never a lead list.

Transmission received.

SP-0000

An engineer will reply to your email within one business day. For urgent outages, call the NOC line — a human answers.