PCB Designer for Handheld Device

I'm an independent inventor building a compact handheld consumer electronics device. I'm looking for an experienced PCB designer to complete the PCB layout. The ideal candidate will have a strong background in consumer electronics and be able to work independently to deliver high-quality results. The project involves ensuring the PCB design is efficient, reliable, and meets all necessary specifications. What's already done: Full KiCad 8 schematic (.kicad_sch) with all components placed and nets labeled Complete BOM with component specifications (Excel) Full scope of work document PCB component placement and layer stackup reference (PDF) What I need from you: Verify and complete the schematic (primary task: replace RV1103 placeholder symbol with correct BGA footprint from Rockchip datasheet) Complete PCB layout — 4-layer, 100×60mm Route all signals including MIPI CSI-2 differential pairs (length matched) and RV1103 BGA fanout Add PMIC (RK816 or equivalent) for RV1103 core/DDR/IO voltage rails — not in current schematic, designer to spec and integrate Run DRC — zero errors required before delivery Export full Gerber package + pick-and-place + STEP file Board specs: 100×60mm, 4-layer FR4, 1.6mm Layer stackup: Signal / GND plane / Power plane / Signal Min trace/clearance: 6 mil ENIG finish Main SoC: Rockchip RV1103 (BGA) — integrated 256MB RAM Supporting ICs: TP4056 charger, MT3608 boost converter, AMS1117-3.3 LDO, PMIC TBD Interfaces: MIPI CSI-2 camera, UART thermal printer, I2C OLED, MicroSD, USB-C OTG, 3 tactile buttons Deliverables: Completed schematic (PDF + .kicad_sch) PCB layout (.kicad_pcb) Gerber files (zipped, DRC clean) Updated BOM with exact part numbers (LCSC / Digi-Key / Mouser) Pick-and-place CSV STEP file / 3D render Ideal candidate: Proven experience with BGA fanout routing (Rockchip, Allwinner, or similar ARM Linux SoCs) MIPI CSI-2 differential pair length matching experience 4-layer stackup design Familiar with Rockchip power tree and PMIC integration KiCad 8 preferred (Altium acceptable) Clean DFM-optimized layouts — board goes to PCBWay for fabrication