Solar Designer

Hammerjack Pty Ltd; Philippines; On-site; PHP 5,313,000 - 8,125,000; Full time

Benefits offered by this job

Permanent work from home

Immediate hiring

Health Insurance Coverage for eligible

Job summary

Hammerjack Pty Ltd is seeking a Solar Designer to create complete, permit-ready PV and energy-storage designs for residential projects in California. You will work on new construction, retrofits, and battery/EV upgrade scenarios, ensuring compliance with NEC/CEC and interconnection rules while coordinating with project managers and field staff.

The role emphasizes constructability, accurate data intake, and rigorous documentation, with a path to PTO and ongoing design refinements in a fast-paced

Qualifications

• Residential PV design experience in California for new construction and retrofit projects.
• Strong knowledge of NEC 690/705 and CEC Title 24 solar/storage provisions.
• Experience with AHJ permit sets and IOU interconnection packages.
• Battery/Hybrid system design experience is a plus.
• Ability to explain design decisions to PMs and field crews.

Responsibilities

• Review proposals, utility data, and site surveys for accurate data intake.
• Develop PV system layouts, SLDs, wiring diagrams, and production models.
• Coordinate with engineers, builders, and electricians for permits and PTO.
• Prepare permit packages and respond to AHJ/IOU comments with revisions.
• Ensure constructability and provide field support during installation.
• Maintain version control and thorough design notes for handoffs.

Skills

Bilingual Spanish

PV design experience

NEC 690/705 knowledge

Aurora Solar

HelioScope

AutoCAD

Interconnection coordination

Education

NABCEP PV Design Specialist certification

Tools

Aurora Solar

HelioScope

AutoCAD

Job description

Job Overview:

Our client is seeking a detail-oriented Solar Designer responsible for producing complete, permit-ready, and constructible photovoltaic (PV) and energy-storage designs for residential projects across California. This role covers three primary project types: new-construction homes, existing-home retrofits, and system additions (batteries, generators, EV chargers, and related electrical upgrades). Designs must comply with current California Electrical Code / NEC standards (including Article 690 and 705), CEC / Title 24 Energy Code, AHJ plan-check requirements, and the interconnection rules of serving utilities (PG&E, SCE, SDG&E, SMUD, and municipal utilities). You will work closely with Project Managers, estimators, field superintendents, and subcontractors to ensure that all drawings can be built, inspected, and granted Permission to Operate (PTO) without redesign.

Schedule:

8:00 AM to 5:00 PM Fresno, CA Time; Full-time role

Responsibilities:

• Site & Data Intake: Review sales proposals, contract scopes, utility bill / interval data, and site survey packages. Confirm roof type, pitch, azimuth, usable area, fire setbacks, and structural notes. Flag missing survey data, unsafe roof conditions, or interconnection constraints early before permit submittal.
• System Design & Engineering Coordination: Handle array layouts, stringing / module-level power electronics, inverter selection, and conductor sizing. Select racking consistent with roof type, wind/snow loads, and manufacturer PE letters used in California. Prepare Single-Line Diagrams (SLD) and Three-Line Diagrams when required, showing PV, BESS, existing service, disconnects, rapid shutdown, grounding, and point of interconnection. Calculate voltage drop, ampacity, conduit fill, equipment ratings, and rapid shutdown plans per NEC. Generate production estimates (HelioScope, Aurora Solar, or equivalent) with documented shading and soiling assumptions, and coordinate structural and electrical PE stamps as needed.
• Permit, Utility & PTO Package Assembly: Assemble complete AHJ plan-check packages including cover sheets, site plans, roof plans, SLDs, equipment cut sheets, placard/label sheets, structural attachments, and Title 24 energy forms. Prepare utility interconnection applications and single-line diagrams matching IOU / POU standards. Respond to AHJ and utility comments using revision clouds and change logs. Support PTO packets with as-built redlines, final SLDs, photo coordination, and commissioning checklists.
• Constructability & Field Support: Ensure designs are buildable by in-house crews and electrical subcontractors without hidden attic or service conflicts. Issue RFIs and design clarifications during installation and convert as-built markups into record drawings. Participate in design reviews with PMs and field teams for high-risk projects (MPU + battery, tile roof, HOA, historic district, multi-inverter).
• Quality, Version Control & Handoff: Maintain naming conventions, revision control, and folder structures per company SOP. Handoff complete packages to PMs and permitting teams with design notes (assumptions, open risks, AHJ quirks). Track cycle times from survey completion to first design, permit readiness, and comment turnaround.
• Required Project Deliverables: Produce Site/Roof Plans, Single-Line Diagrams (SLD), Equipment Schedules/BOM, Production Models, Electrical Calculations, Permit Packages, Utility Interconnection Packages, Design Notes/Risk Logs, and As-Builts post-installation.

Requirements:

• Demonstrated residential PV design experience in California across new construction and retrofit projects.
• Working knowledge of NEC 690 / 705, CEC Title 24 solar/storage provisions, and California fire setback/pathway rules.
• Hands-on experience preparing AHJ permit sets and at least one major-IOU interconnection package.
• Battery / hybrid system design experience beyond proposal-level work.
• Ability to explain design decisions clearly to Project Managers and field leads.
• Clean, revision-controlled drawing habits and reliable turnaround.
• Proficiency with design and modeling software (Aurora Solar and/or HelioScope) and CAD drafting tools (AutoCAD or equivalent).
• Experience with structural attachment tools (e.g., IronRidge, Unirac, QuickMount) and utility interconnection portals (PG&E, SCE, SDG&E).

Preferred Qualifications:

• NABCEP PV Design Specialist or PV Installation Professional certification.
• Experience with Central Valley, Bay Area, and/or Southern California AHJs.
• Experience with MPU / service-upgrade design and coordination with licensed electricians.
• Bilingual capabilities in Spanish for field coordination.
• Prior work experience within an installation company, with a strong focus on constructability.

Project Scope:

• New Construction Residential: Roof-mounted and ground-mounted PV on production and custom homes. Coordinate with builder plans, truss layouts, roof planes, setbacks, fire access pathways, and electrical rooms. Perform load calculations and service sizing for high-electrification homes (heat pumps, induction, EVSE) and integrate PV, battery, and backup loads before rough-in within builder permit milestones.
• Retrofit / Existing Homes: Create site-driven designs from aerials, photos, drone imagery, and field measurements. Assess existing roof conditions, vents, skylights, chimneys, and aging materials. Evaluate service, main panel, and interconnection paths (line-side tap, load-side, supply-side, busbar calculations per 705.12). Perform shading analysis matching proposals and minimize roof penetrations.
• Additions (Storage, Generators, EV & Electrical Upgrades): Design battery energy storage systems (Tesla Powerwall, Enphase IQ Battery, FranklinWH, UL 9540 systems). Plan whole-home/partial-home backup, critical-loads panels, automatic transfer, generator pairing, EV charger circuits, load-management strategies, Main-Panel Upgrades (MPU), subpanels, and derate/power-control system designs across AC-coupled and DC-coupled architectures.

Independent Contractor Perks:

• Permanent work from home
• Immediate hiring
• Health Insurance Coverage for eligible locations