Maria S.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Greetings! I am a Senior Electrical & Solar PV Design Engineer with 10+ years of experience delivering practical and approval-ready engineering solutions for commercial, industrial, and utility-scale projects. My expertise covers Solar PV system design, PVsyst and Helioscope simulations, electrical Single Line Diagrams (SLDs), LV/MV power distribution, cable sizing, voltage-drop calculations, protection, earthing, AC/DC distribution, BOQs, and technical documentation. I also specialize in Hybrid Solar and Battery Energy Storage Systems (BESS), including PV + battery system architecture, battery and inverter sizing, AC/DC protection, backup systems, and electrical integration. I use PVsyst, Helioscope, AutoCAD, ETAP, OpenSolar, and SolarEdge Designer to develop accurate and constructible designs aligned with applicable IEC, IEEE, and NEC standards. I support EPC contractors, solar developers, consultants, and engineering companies with complete or individual engineering deliverables—from system sizing and energy simulations to SLDs, calculations, BOQs, and detailed electrical design. 100% Job Success | 10+ Years Engineering Experience | Solar PV + Electrical + BESS I look forward to work with you ..