Certified California Small Business (Microbusiness)

DGS Certification ID 2055760 — approved October 14, 2026 by the California Department of General Services, Office of Small Business and DVBE Services. Verify at caleprocure.ca.gov by firm name or Certification ID.

Njoya Engineering Company
2001 Clayton Rd Suite 200 #61, Concord, CA 94520
(209) 576-5714 · info@njoyaengineering.com
Delaware corporation, incorporated September 3, 2021. California entity B20260437487.
Giles Domkam, EIT — Founder & CEO.

Capability statement (PDF): email info@njoyaengineering.com for a copy.

NAICS codes

• 541330 Engineering Services
• 541340 Drafting Services
• 611430 Professional and Management Development Training

What we do

• Structural design and analysis — steel, concrete, wood, masonry, cold-formed framing; foundations and load-bearing analysis. Revit, RISA-3D, AutoCAD. ACI 318, AISC 360/341, AISI S100, NDS, TMS 402, ASCE 7, IBC.
• Seal-ready calculation packages — complete calc sets prepared for review and stamp by a California-licensed PE, coordinated by Njoya.
• BIM coordination — 3D models, MEP clash detection, constructability review before issue for construction.
• Infrastructure planning — roads, bridges (AASHTO LRFD), drainage, retaining walls, with seismic design and cost in view.
• Value engineering — span and member optimisation that cuts material without cutting capacity.
• Tender and bid support — scope definition, technical specifications, cost-estimating method, proposal quality review against bid instructions.
• Software and AI engineering — a named line of business on the firm’s California Statement of Information.

How we engage

• Subcontract / teaming — a defined structural and BIM workshare inside a prime contractor’s or design firm’s effort.
• Support to licensed firms — calc preparation, BIM and drafting for architects, contractors and engineering firms working under their own engineer of record.
• Workforce and education — CAD/BIM training, engineering career coaching, STEM programmes with UNITE partners.

How the work is checked

• Pinned code editions. No clause is cited unless it resolves to a pinned edition; an edition change flags every affected calculation.
• Reconstructable runs. Each calculation is logged with its input hash, engine version, code editions, reviewer and date.
• Independent check. Governing results are checked by a second method before they move past review.
• Named human sign-off. Nothing is approved or issued without a named reviewer. AI is never on the load path.

Licensure boundary

Giles Domkam is an Engineer-in-Training. Njoya Engineering does not stamp or certify drawings or calculations and does not practise as the engineer of record. Stamp work is routed to a California-licensed PE, or performed by your own engineer of record. Stating that boundary is what makes Njoya straightforward to hire as a subcontractor.

Rates and terms

Hourly or fixed-fee, quoted per scope. 50% at signing on private work. Credit cards accepted, including CAL-Card. Net 30; California state agencies under the Prompt Payment Act, Gov. Code §927 et seq.

Small business purchasing

Under the state’s SB/DVBE Option, a California agency may contract directly with a certified small business for goods and services from $5,000.01 to $249,999.99 after obtaining quotes from at least two certified SBs or DVBEs. Njoya’s certification also carries a 5% bid preference on applicable solicitations.

For a quote, email info@njoyaengineering.com or call (209) 576-5714.