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Billing Engineer

Rays Experts • Head Office, Rajasthan

About the Company Rays Power Experts Limited is seeking a Billing Engineer to join their Commercial / Project Billing department. The role reports to the Commercial Head / Finance Head and is based at the Head Office or Project Site in Rajasthan. About the Role The Billing Engineer will be responsible for service billing, contractor billing, GST, PF, ESIC and statutory compliance. Key duties include preparing and verifying service invoices, contractor RA bills and supporting documents, and ensuring timely submission and processing of bills as per company policy and contract terms. Key Responsibilities Prepare and verify service invoices and contractor bills as per Work Orders, POs and payment terms Prepare RA bills based on actual work done, approved BOQ, measurements and agreed rates Verify completion certificates, measurement sheets and supporting documents before submission Check GST invoices, HSN/SAC codes, GST rates, taxable values and TDS deductions Coordinate with site engineers, project managers, vendors and finance for verification and approvals Track submitted bills, pending approvals, deductions and payment status; ensure timely invoice submission to clients Verify bills against BOQ, work orders, site measurements and actual completion Check quantities, rates, advances, recoveries, retention, penalties and other deductions Verify material reconciliation and consumption statements where applicable Ensure bills carry site engineer approval, quality clearance and completion certification Identify discrepancies and coordinate rectification with concerned departments Verify contractor compliance documents before processing bills Check monthly PF/ESIC challans, ECRs and contribution details Verify attendance, wage registers, salary payment proof and deployment records Verify labour licences, registrations, insurance and other statutory documents Maintain compliance records; coordinate with HR/Admin and contractors for missing or expired documents Ensure compliance documentation is complete before recommending bills for payment Verify GST registration and vendor GSTIN validity Coordinate with accounts on ITC eligibility and GSTR-2B reconciliation Ensure delivery challans, completion certificates and other supporting documents are submitted Verify TDS deductions with the finance team Maintain contractor-wise and project-wise billing records Prepare monthly billing trackers (submitted, approved, pending, rejected, paid) Maintain compliance registers and contractor document checklists Report on outstanding bills, pending documents, recoveries, retention and payment status Maintain digital and physical filing for audits; support internal and statutory audits Requirements Strong knowledge of service billing and contractor RA billing Practical knowledge of GST, PF, ESIC, TDS and labour compliance documentation Understanding of WOs, POs, BOQs, payment terms, retention and deductions Proficiency in MS Excel, billing trackers and documentation Ability to coordinate with site teams, vendors, HR and finance Strong attention to detail and ability to spot billing discrepancies ERP/accounting software knowledge is an added advantage Preferred Qualifications Experience in solar EPC, infrastructure, construction or electrical projects Practical experience verifying PF, ESIC, GST and labour compliance documents What We Offer Competitive salary and benefits Opportunities for professional growth and development A dynamic and collaborative work environment Location & Work Mode Onsite role based at the Head Office or Project Site in Rajasthan.

Ms ExcelGstPfEsicStatutory Compliance
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132 kV Substation Maintenance Engineer

Rays Experts • Project Site, Bikaner, Rajasthan

About the Company We are seeking an experienced engineer to join our Electrical – O&M department. The role involves managing operation, preventive and breakdown maintenance, and troubleshooting of 132 kV substations and associated equipment. About the Role The 132 kV Substation Maintenance Engineer will be responsible for hands-on substation experience, fault analysis skills, safety compliance, and coordination with DISCOM/TRANSCO and other authorities. Key Responsibilities Carry out preventive and corrective maintenance of 132 kV substations Maintain circuit breakers, isolators, earth switches, CTs, PTs/CVTs, lightning arresters and busbars Maintain power transformers, including cooling systems, oil levels and protection systems Maintain 33/11 kV switchgear, control panels and auxiliaries, where applicable Monitor battery banks, chargers, DC supply and AC auxiliary supplies Ensure earthing and protection systems function properly Coordinate and perform testing of breakers, transformers, CTs, PTs/CVTs and protection relays Troubleshoot faults and identify root causes of failures Monitor transformer oil parameters and coordinate oil testing and filtration Check relay settings, trip circuits, annunciation and breaker operation Maintain records of insulation resistance, contact resistance and other test results Follow approved switching procedures, PTW, LOTO and isolation practices Coordinate shutdowns and restoration with concerned authorities Ensure compliance with electrical safety regulations and site procedures Conduct toolbox talks and ensure technicians and contract workers follow safety rules Maintain preventive maintenance schedules and equipment history Prepare daily, weekly and monthly reports, breakdown reports, checklists and logs Monitor spares, consumables and critical tools Coordinate with OEMs, testing agencies, contractors and utility representatives Supervise electrical technicians and maintenance staff Coordinate with DISCOM/TRANSCO, SLDC and project/engineering teams Ensure timely completion of maintenance and minimize downtime Requirements Hands-on 132 kV substation maintenance experience Knowledge of transformers, breakers, isolators, CTs, PTs/CVTs and lightning arresters Understanding of differential, REF, overcurrent and earth-fault protection schemes Knowledge of protection relays, control circuits and DC battery systems Familiarity with testing instruments and maintenance procedures Ability to read substation drawings, SLDs and safety standards Experience in preventive maintenance planning and breakdown analysis Preferred Qualifications Technically sound, proactive and safety-conscious Able to independently manage a 132 kV substation Willingness to work at project sites and attend emergency breakdowns What We Offer Opportunity to work on challenging projects Career growth and development Competitive compensation and benefits Location & Work Mode Onsite at project sites in Bikaner, Rajasthan (Gajner, Dechu, Lunkarsar)

TransformersCTStesting instrumentsSafety StandardsSLDS
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Network Engineer – SCADA & Solar Park Operations

Rays Experts • Jaipur

About the Company We are seeking a Network Engineer with hands-on SCADA and industrial comms expertise to design, deploy and maintain the full OT/IT network at our solar park. The role ensures uninterrupted, low-latency data flow between field devices (inverters, trackers, weather stations, meters, transformers, RMUs) and SCADA, EMS and plant performance systems, in line with IEC 61850, IEC 62443 and grid code/SLDC requirements. About the Role The Network Engineer will be responsible for the design, deployment, and maintenance of the OT/IT network at our solar park. This role requires expertise in SCADA and industrial communications to ensure seamless data flow between field devices and SCADA, EMS, and plant performance systems. Key Responsibilities Design, document and maintain the OT network: Process Bus, Station Bus, plant LAN and remote SCADA WAN links Segment OT, IT and corporate zones with VLANs, DMZs and firewalls per IEC 62443 and the Purdue model Standardize IP addressing, naming and asset registers across blocks, inverter stations and the substation Plan redundancy (HSR, PRP, RSTP, MRP) for ring/star fiber topologies to meet availability targets Commission field-to-SCADA/EMS communication over Modbus TCP/RTU (inverters, meters, weather stations, trackers), IEC 60870-5-104 (SLDC/RLDC telemetry), IEC 61850 MMS/GOOSE/SV (substation, relays), DNP3 (utility interface) and OPC UA/MQTT (historians, cloud analytics) Maintain the protocol mapping matrix (signal list, register map, IEC 61850 data model) for every device class Validate ICDs and test cases with inverter, SCADA, RTU, relay and tracker OEMs during FAT/SAT Troubleshoot stale tags, time-sync drift, register mismatches and packet loss (Wireshark, IEDScout, Modbus Poll) Commission and maintain managed industrial switches, media converters, fiber patch panels and RS-485 daisy chains up to SCB/SMB level Implement time sync (NTP, SNTP, PTP/IEEE 1588, IRIG-B) for protection and metering Ensure grounding, shielding and surge protection of outdoor comms cabling Maintain as-built network diagrams, cable schedules and port-mapping records Monitor network health via SNMP tools (PRTG, Zabbix, SolarWinds) and SCADA diagnostics; respond to alarms within SLA Lead root-cause analysis for outages affecting generation, dispatch or load despatch telemetry Maintain critical network spares to protect plant availability (PLF/CUF) Support O&M, electrical and SCADA teams in shutdowns, upgrades and grid-code audits Requirements Industrial/OT networking, preferably in renewable energy or utility plants Preferred Qualifications Commissioning utility-scale solar PV (≥ 50 MW) incl. SCADA, PPC and SLDC/RLDC integration PPC logic: active/reactive power setpoints, ramp rate, frequency response, voltage/Q control Certifications: CCNA/CCNP, GICSP, ISA/IEC 62443, or OEM (Hirschmann HAC, Moxa MTSE, Ruggedcom) Weather station, soiling sensor, pyranometer and tracker SCADA integration Basic scripting (Python, PowerShell or Bash) for automation and log parsing What We Offer Network availability ≥ 99.5% across all blocks and the SCADA-to-SLDC link MTTR for communication faults within SLA Zero data loss affecting grid telemetry, scheduling or commercial metering On-time device integration, firmware upgrades and protocol changes Grid and cybersecurity audit compliance Location & Work Mode Location: Solar Park Site (on-site; occasional travel to other portfolio sites) Work Mode: Full-time

PythonScadaBashRenewable EnergyPowershell
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Civil Design Engineer

Rays Experts • Jaipur

About the Company Rays Power Experts Ltd is a Utility-Scale Solar EPC company. About the Role Rays Power Experts Ltd is seeking a skilled Civil Design Engineer to lead the preparation and review of civil and structural designs for utility-scale solar power projects. The role covers design calculations, drawings, BOQ preparation, and technical specifications, working closely with multidisciplinary project teams to deliver designs that are safe, cost-effective, and fully compliant with applicable codes, project specifications, and client requirements. Key Responsibilities Prepare civil and structural designs for utility-scale solar power plants, including module mounting structure foundations and plant infrastructure. Develop foundation drawings, site grading plans, drainage layouts, and internal road layouts. Design transformer foundations and civil works for Power Pooling Stations (PPS) and associated structures. Review geotechnical and soil investigation reports and recommend appropriate foundation systems. Drive design optimisation to improve cost efficiency, constructability, and quality. Prepare Bills of Quantities (BOQ), material estimates, and technical specifications. Prepare and maintain design calculations, design basis reports, and project documentation. Ensure all designs comply with relevant IS codes, project standards, and client requirements. Review contractor and vendor drawings and provide technical comments and approvals. Coordinate with electrical, mechanical, and project execution teams to ensure integrated design delivery. Provide timely technical support to site teams in resolving design-related issues during construction. Requirements Sound knowledge of RCC and steel structure analysis and design. Strong understanding of soil investigation, geotechnical parameters, and foundation design. Working knowledge of relevant IS codes and standards for civil and structural works. Software proficiency: AutoCAD, STAAD.Pro, Google Earth Pro, and MS Office (Excel, Word, PowerPoint). Bachelor’s degree (B.E. / B.Tech) in Civil Engineering from a recognised institution. Preferred Qualifications Hands-on experience in civil works for solar power projects, preferably with a solar EPC organisation. Experience in transformer foundation design. Experience in civil design for Power Pooling Stations (PPS). Exposure to the complete range of civil works associated with solar plant infrastructure. Key Competencies Strong analytical and problem-solving abilities. Effective coordination and stakeholder management across teams. Clear written and verbal communication, with strong technical reporting skills. Attention to detail and commitment to quality, safety, and timelines. Location & Work Mode The position is based in Jaipur, with potential travel to project sites as required.

AutocadSTAAD.PROGOOGLE EARTH PROMS Office (Excel, Word, PowerPoint)RCC and steel structure analysis and design
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