We're solving big problems. Join a team where your contribution is critical

Manage installation, commissioning, troubleshooting, and preventive maintenance activities.  Handle critical customer escalations, warranty claims, and service complaints.  Train and supervise service engineers, service centers, and channel partners.  Monitor SLAs, KPIs, response time, and system uptime.  Coordinate with R&D and product teams for root cause analysis and product improvement.  Manage spare parts planning and inventory control.  Ensure compliance with safety standards and electrical regulations.

  Role Purpose  To lead and strengthen field service operations for EV chargers by ensuring high uptime, efficient issue resolution, and scalable service processes. The role is critical for delivering reliable after-sales support as Servotech expands its EV charger network.  Key Responsibilities  1. Service Operations Management  • Manage end-to-end service operations for EV chargers (AC/DC chargers across locations)  • Ensure timely resolution of breakdowns, complaints, and preventive maintenance  • Monitor uptime SLAs and drive improvements  2. Field Service Execution  • Coordinate with field engineers, service partners, and regional teams  • Plan and optimize deployment of service resources across locations  • Ensure adherence to TAT (Turnaround Time) for service requests  3. Issue Diagnosis & Resolution  • Support troubleshooting of technical issues (hardware, software, connectivity)  • Work closely with R&D and product teams for root cause analysis (RCA)  • Maintain structured logs of recurring issues and corrective actions  4. AMC & Service Contracts  • Manage AMC (Annual Maintenance Contracts) lifecycle  • Ensure contract compliance and timely service delivery  • Support commercial alignment for service billing and renewals  5. Process & System Development  • Establish SOPs for service workflows, escalation matrix, and reporting  • Drive adoption of ticketing systems / CRM tools for service tracking  • Build dashboards for service performance (uptime, response time, closure rate)  6. Stakeholder Management  • Coordinate with clients, EPC partners, and internal teams  • Provide regular updates to leadership on service performance  • Handle escalations professionally and proactively   7. Team Management  • Lead and mentor service engineers / technicians  • Define KRAs and monitor performance of service teams  • Identify training needs and drive capability building  Key Metrics / KPIs  • Charger uptime (%)  • Service request TAT  • First-time resolution rate (FTR)  • AMC renewal rate  • Customer satisfaction (CSAT)  • Repeat issue frequency  Desired Candidate Profile Experience  • 6-10 years of relevant experience • Experience in EV chargers, power electronics, Lithium Batteries, or similar field service environments  Technical Skills  • Strong understanding of EV charging systems (AC/DC chargers preferred)  • Knowledge of electrical systems, power electronics, and fault diagnostics  • Familiarity with OCPP, IoT-based monitoring systems is a plus  Functional Skills  • Strong problem-solving and analytical ability  • Data-driven approach to service improvement  • Experience with CRM/ticketing tools  Behavioural Competencies  • High ownership and execution speed  • Structured thinking and process orientation  • Strong communication and stakeholder handling skills  • Ability to work in high-growth, dynamic environments  Educational Qualification  • B.Tech in Electrical / Electronics / Instrumentation or related field  Reporting Structure  • Reports to: Service Head  

Location: New Delhi / NCR (Corporate Office: Rohini | Manufacturing: Sonipat) Experience: 8–12 Years Industry: Renewable Energy / Energy Storage Systems (ESS) The Role As the Senior Manager Sales – OEM (Lithium Battery), you will be the strategic architect for our B2B and OEM revenue streams. You will be responsible for identifying, onboarding, and managing high-value relationships with Solar EPC, Hybrid Inverter Manufacturers, Automotive OEMs (2W, 3W, and Commercial EVs) and Industrial partners. Your goal is to integrate Servotech’s Lithium-ion solutions as the preferred energy source for leading equipment manufacturers. Key Responsibilities ● OEM Acquisition & Strategy: Identify and onboard Tier-1 and Tier-2 Automotive OEMs. Develop a robust pipeline for Lithium battery packs (LFP) specifically for E-mobility and stationary storage. ● Key Account Management: Act as the primary interface between the client’s technical/procurement teams and Servotech’s R&D/Production units. ● Technical Consultative Selling: Lead discussions on battery chemistry (LFP), BMS (Battery Management System) integration, thermal management, and mechanical housing to provide tailored solutions. ● Revenue Leadership: Define and achieve monthly/quarterly sales targets. Manage the full sales cycle from initial RFP/RFQ to contract negotiation and commercial closure. ● Market Intelligence: Track competitor pricing, technological shifts (e.g., Solid-state, Sodium-ion), and government subsidies/policies (PLI schemes, FAME-III) to position Servotech competitively. ● Cross-functional Collaboration: Coordinate with the Sonipat manufacturing facility and Quality Control teams to ensure OEM-specific compliance and timely delivery of batches. ● CRM & Reporting: Maintain high data hygiene in CRM (Zoho/SAP S/4HANA) and provide the leadership team with accurate revenue forecasts. Required Qualifications & Skills ● Education: B.Tech/B.E. in Electrical, Electronics, or Mechanical Engineering. An MBA in Marketing/Sales is highly preferred. ● Experience: Minimum 8 years in B2B/OEM sales, with at least 4-5 years specifically in the Lithium-ion Battery or EV industry. ● Technical Acumen: Strong understanding of Battery Management Systems (BMS), Cell-to-Pack technology, and charging protocols. ● Network: An active rolodex of contacts within the Indian EV OEM ecosystem (Hero Electric, Mahindra Electric, Euler Motors, Greaves, etc.). ● Negotiation: Proven track record of handling multi-million dollar contracts and complex technical negotiations. ● Soft Skills: Exceptional presentation skills and the ability to represent the brand at national industry forums. Why Join Servotech? ● Impact: Play a pivotal role in India’s Net-Zero transition. ● Innovation: Work with a company that holds multiple patents in EV and Power technology. ● Growth: Leadership role in a fast-expanding NSE-listed entity with global advisory (Errol Musk).

Position: Administration Manager – Plant Location: Sonipat Department: Plant Operations / Administration Experience: 10–18 Years Role Overview We are looking for a highly disciplined, execution-driven Administration Manager to take complete ownership of plant administration, security, and ground-level operations at our Sonipat facility. This role requires a strong, authoritative individual capable of handling labour, vendors, security, and plant operations with zero tolerance for indiscipline, leakages, or inefficiencies. Key Responsibilities 1. Plant Administration & Facility Management •  Ensure smooth day-to-day administrative functioning of the plant •  Oversee plant infrastructure, housekeeping, utilities, and maintenance •  Maintain high standards of discipline, cleanliness, and operational readiness 2. Security & Surveillance •  Lead end-to-end plant security operations (guards, access control, surveillance) •  Prevent theft, pilferage, and unauthorized movement of materials •  Implement strict entry/exit protocols for manpower, vehicles, and materials 3. Labour & Contractor Management •  Handle labour contractors, workforce deployment, and discipline on the ground •  Manage labour attendance, productivity tracking, and dispute handling •  Actively manage union interactions and prevent disruptions 4. Transport & Logistics Coordination •  Coordinate with transporters for inbound and outbound logistics •  Ensure smooth vehicle movement and dispatch processes •  Control delays, leakages, and logistics inefficiencies 5. Store & Material Control •  Supervise material inward/outward movement with proper documentation •  Ensure strict control over inventory handling at the plant level •  Coordinate with store and operations teams for accuracy and control 6. Liaisoning & Compliance •  Manage local authority liaisoning (police, municipal, regulatory bodies) •  Ensure compliance with safety, labour, and statutory requirements •  Handle inspections and local issues proactively 7. Safety & Discipline •  Enforce safety protocols across plant operations •  Ensure zero tolerance for safety violations •  Drive a culture of discipline, accountability, and ownership Candidate Profile Must Have •  10+ years of experience in plant administration/factory operations •  Strong exposure to: 1.  Labour handling & contractor management 2.  Security & surveillance systems 3.  Transport & logistics coordination 4.  Store/material movement control •  Experience in handling industrial relations/unions •  Strong personality with an authority and control mindset Preferred •  Ex-Army / Defence background (Junior Commissioned Officer / Officer level preferred) •  Experience in manufacturing / industrial setup •  Local network in the Haryana region is a plus Key Competencies •  Strong command & control ability •  High discipline and execution rigor •  Conflict resolution (labour & union) •  Operational vigilance & risk control •  Assertive communication

Role Purpose The Lead Qualification Executive will act as the first point of contact for all marketing-generated leads. This role is responsible for structured outreach, initial lead qualification, and ensuring a seamless handover of qualified prospects to the secondary sales team. The position plays a critical role in: • Improving lead conversion efficiency • Reducing lead leakage • Ensuring disciplined and timely follow-ups on marketing-generated data Key Responsibilities 1. Lead Engagement & Outreach • Connect with all assigned leads generated through marketing channels (digital campaigns, events, inbound inquiries, etc.) • Ensure 100% lead coverage within defined turnaround time (TAT) • Perform a minimum of 3 touchpoints per lead (calls and follow-ups) before marking as disqualified 2. Lead Qualification • Understand customer requirements including need, budget, timeline, and intent • Apply standardized qualification criteria as per SOP • Categorize leads into:• Qualified • Nurture / Follow-up • Disqualified (with reason) 3. Data Discipline & CRM Hygiene • Update call outcomes in CRM or tracking systems in real-time • Maintain accurate records of:• Call attempts • Customer responses • Qualification status • Ensure zero data loss and proper tagging of all leads 4. Handover to Second Calling Team • Transfer only validated and well-structured leads to the next stage • Share key customer insights, including:• Requirement summary • Urgency level • Objections and expectations 5. Follow-up Management • Plan and execute structured follow-ups for warm or undecided leads • Ensure no lead is dropped without completing the defined attempt cycle 6. Performance Metrics (KPIs) • Daily number of leads contacted • Touchpoint compliance (≥ 3 attempts per lead) • Qualified lead conversion rate • CRM data accuracy • Response turnaround time Candidate Profile Must Have • 0–3 years of experience in telecalling, inside sales, or lead qualification • Strong communication skills in Hindi and basic English • Comfortable with high-volume outbound calling Good to Have • Experience in EV, Solar, B2B, or technical product sales • Familiarity with CRM tools or Google Sheets tracking • Structured and process-driven follow-up approach Behavioral Competencies • High ownership and accountability • Strong persistence and follow-up ability • Attention to detail, especially in data accuracy • Effective listening and probing skills • Process-oriented mindset with disciplined execution Contact No: 9205554760

  Job Description: AVP – Channel Sales (Solar) Experience: 18–22 Years  Location: Delhi  Industry: Solar / Renewable Energy  Reporting To: Business Head / Director – Sales   Role Overview         We are seeking an experienced and dynamic AVP – Channel Sales to lead and expand our channel sales network in the solar industry. The candidate will be responsible for driving revenue growth through distributors, dealers, and partners while managing large teams and ensuring market penetration across regions.  Key Responsibilities  Channel Development & Expansion - Develop and implement channel sales strategies to achieve business targets  - Identify, onboard, and manage distributors, dealers, and channel partners  - Strengthen partner network to enhance market reach and penetration Sales & Revenue Management - Drive revenue growth through effective channel management  - Ensure achievement of sales targets (monthly, quarterly, annual)  - Monitor sales performance and implement corrective actions Team Leadership - Lead, mentor, and manage regional/channel sales teams  - Set KPIs, monitor performance, and drive team productivity  - Build a high-performance sales culture Market & Business Development - Analyze market trends, competitor activities, and customer needs  - Identify new business opportunities in solar EPC, rooftop, and EV charging segments  - Collaborate with marketing for lead generation and brand visibility Relationship Management - Maintain strong relationships with key channel partners and stakeholders  - Resolve escalations and ensure partner satisfaction  - Negotiate commercial terms and agreements Operational Excellence - Ensure smooth order execution, collections, and inventory management  - Coordinate with internal teams (operations, service, finance)  - Maintain compliance with company policies and processes Travel Extensive travel required for partner meetings, market visits, and team reviews  Key Requirements  - Experience: 18–22 years in channel sales, preferably in solar / renewable energy industry  - Strong experience in managing large distributor/dealer networks  - Proven track record of achieving high revenue targets  - Prior experience in team handling (multi-location teams)  - Strong understanding of solar products (modules, inverters, EPC, EV chargers)  - Excellent leadership, negotiation, and communication skills  - Willingness to travel extensively  Preferred Qualifications  - Bachelor’s degree in Engineering / Business  - MBA in Sales/Marketing preferred  Key Competencies  - Strategic Thinking  - Leadership & Team Management  - Channel Development  - Business Acumen  - Relationship Management  - Result Orientation 

  Job Description – Manager, New Business Development (NBD)  Role Purpose: To drive expansion of the channel network by identifying, engaging, and converting new distributors across assigned territories.  This role is responsible for new distributor acquisition, territory expansion, and channel growth, directly contributing to revenue pipeline creation.    Reporting Structure: Reports to: Director – Channel Sales  Works closely with: - Sales Operations (Lead flow & scheduling) - Zonal Sales Team - Channel Partner Onboarding Team  Role Scope • Own distributor acquisition targets  • Conduct field meetings with prospects  • Convert qualified leads into active channel partners  • Build strong pipeline across assigned territories  Key Responsibilities 1. Lead Conversion & Distributor Acquisition  • Attend scheduled meetings from CRM pipeline  • Evaluate distributor potential and fit  • Convert prospects into channel partners  2. Territory Expansion  • Identify new markets and gaps  • Build distributor network across districts  • Ensure territory coverage targets are achieved  3. Meeting Execution Discipline  • Conduct daily meetings as per beat plan  • Maintain high meeting-to-conversion efficiency  • Ensure no missed or rescheduled meetings  4. Sales Pitch & Partner Onboarding Handover  • Present Servotech value proposition  • Close distributor agreements  • Handover to onboarding team post conversion  5. CRM & Reporting  • Update meeting outcomes within 30 minutes  • Maintain accurate data in CRM  • Track pipeline and conversion status   Key Result Areas (KRA)  : Distributor acquisition (monthly)  | Meeting productivity  | Territory coverage  | Conversion efficiency  | CRM discipline  Key Performance Indicators (KPI) Conversion KPIs: New distributors appointed per month | Meeting to conversion ratio (%)  Activity KPIs: Meetings per day / month  | Pipeline coverage (active leads)  Territory KPIs : District coverage achieved | Gap area closure  Discipline KPIs:  CRM updates (100% compliance)  | Meeting outcome logging time  Performance Benchmarks • Minimum 12–15 distributor conversions per month  • Minimum 5–6 meetings per day  • Conversion ratio above 10–12% 

  Job Title: Assistant Manager / Deputy Manager – Service (Solar + Lithium Battery) Budget: Up to ₹7 LPA  Exp -7 to 10 yrs Role Purpose  To lead and strengthen field service operations for Solar and Lithium Battery systems by ensuring high uptime, efficient issue resolution, and scalable service processes. This role is critical in delivering reliable after-sales support as the organization expands its Solar, Lithium Battery, and EV Charger network.  Key Responsibilities  1. Service Operations Management  • Manage end-to-end service operations for Solar and Lithium Battery systems across multiple locations • Ensure timely resolution of breakdowns, complaints, and preventive maintenance activities • Monitor uptime SLAs and drive continuous improvements 2. Field Service Execution              • Coordinate with field engineers, service partners, and regional teams • Plan and optimize deployment of service resources • Ensure adherence to TAT (Turnaround Time) for all service requests 3. Issue Diagnosis & Resolution  • Troubleshoot technical issues (hardware, software, connectivity) • Collaborate with R&D and product teams for root cause analysis (RCA) • Maintain structured logs of recurring issues and corrective actions 4. AMC & Service Contracts  • Manage end-to-end AMC (Annual Maintenance Contract) lifecycle • Ensure contract compliance and timely service delivery • Support billing, renewals, and commercial alignment 5. Process & System Development  • Establish SOPs, escalation matrices, and service workflows • Drive adoption of CRM/ticketing tools for service tracking • Develop dashboards for performance tracking (uptime, response time, closure rate) 6. Stakeholder Management  • Coordinate with clients, EPC partners, and internal teams • Provide regular performance updates to leadership • Handle escalations proactively and professionally 7. Team Management  • Lead and mentor service engineers and technicians • Define KRAs and monitor team performance • Identify skill gaps and drive training initiatives Key Metrics / KPIs  • System / Charger Uptime (%) • Service Request TAT • First-Time Resolution Rate (FTR) • AMC Renewal Rate • Customer Satisfaction (CSAT) • Repeat Issue Frequency Desired Candidate Profile Experience  • 6–10 years of relevant experience • Background in Solar, Power Electronics, Lithium Batteries, or similar service environments • Mandatory: Team handling experience (engineers/technicians) Technical Skills  • Strong understanding of Solar systems (preferred) • Knowledge of electrical systems, power electronics, and fault diagnostics • Familiarity with EV chargers, OCPP, and IoT-based monitoring systems (added advantage) Functional Skills  • Strong problem-solving and analytical mindset • Data-driven approach to service improvement • Experience with CRM or ticketing systems Behavioral Competencies  • High ownership and execution focus • Structured thinking and process orientation • Strong communication and stakeholder management skills • Ability to thrive in a fast-paced, high-growth environment Educational Qualification  • B.Tech / B.E. in Electrical, Electronics, Instrumentation, or related field Reporting Structure  • Reports to: Service Head  

No job description available.

Job Title: Deputy Manager – New Product Development Experience Required: 5–8 years Industry: EV Chargers / Renewable Energy / Electronics Role Summary:  The Deputy Manager – NPD will lead the development, testing, and validation of next-generation EV chargers and related products. The role combines hands-on technical oversight with process management, cross-functional collaboration, and compliance assurance. The goal is to deliver high-quality, reliable, and innovative products to market while minimizing defects and ensuring seamless integration with client systems.  Key Responsibilities:  •  Lead new product development activities for AC/DC EV chargers and associated components.  •  Plan and execute product validation, testing, and commissioning, ensuring adherence to internal quality standards and client requirements.  •  Define and monitor product risk mitigation plans, including design verification and failure analysis.  •  Collaborate with cross-functional teams and external labs to ensure compliance with regulatory, environmental, and safety standards.  •  Manage integration of chargers with vehicle systems (BMS), firmware updates, and communication protocols.  •  Support fleet and charging station management systems, including monitoring performance and troubleshooting.  •  Drive documentation, reporting, and knowledge transfer for testing, validation, and product lifecycle processes.  •  Mentor junior engineers and ensure adoption of best practices in testing, validation, and product development.  Key Skills & Competencies:  •  Strong technical knowledge of EVSE hardware and firmware, including AC/DC chargers, off-board chargers, and adaptors.  •  Hands-on experience in testing, validation, and product commissioning.  •  Familiarity with OCPP, BMS integration, and electrical/environmental compliance testing.  •  Strong analytical and problem-solving skills, particularly in root cause analysis and defect reduction.  •  Ability to manage cross-functional projects, stakeholder communication, and lab coordination.  •  Proficiency in MS Office and testing/diagnostic tools.  •  Process-oriented, proactive, and capable of driving end-to-end NPD activities.  Education:  •  B.Tech / B.E. in Electronics, Electrical, or related field.  •  Certifications in EV systems, product development, or project management are a plus.  Experience:  •  5–8 years in R&D or product development, ideally in EVSE, electronics, or renewable energy.  •  Exposure to high-power AC/DC charger development, prototype validation, and product launch preferred.  

  Head – Solar AMC & O&M  Location: Delhi NCR (Pan-India portfolio oversight) Reports To: Managing Director Vertical: Independent AMC & O&M Business Unit  ROLE OBJECTIVE                To build, lead, and scale Servotech’s Solar AMC & operations and Maintenance Services vertical as a disciplined, revenue-generating business unit.  The role will own end-to-end Solar AMC operations including execution, billing, collections, client management, and governance. The mandate is to ensure operational excellence, predictable cash flow, reduced receivable ageing, and scalable systems across the portfolio.  This is a P&L-aligned leadership role, not a site-level O&M function.  BUSINESS CONTEXT  • Active and growing Solar AMC portfolio (State Govt, PSU, Private offtakers) • Target to scale structured AMC revenue over next 3–5 years • Focus on revenue realization, renewal discipline, and lifecycle continuity • EV AMC expansion expected in future phase (exposure is an advantage) KEY RESPONSIBILITIES / KRAs 1️Revenue & Collections Ownership  • Own end-to-end AMC billing, milestone invoicing, and revenue realization. • Personally drive reduction of receivable ageing and enforce collection discipline. • Escalate delayed payments from PSUs, DISCOMs, and private offtakers as per contract. • Ensure renewal conversion of expiring AMC contracts with minimal leakage. • Track and monetize short-term revenue opportunities (energy allocation optimization, warranty claims, recoveries). • Maintain defined receivable ageing thresholds and report deviations. 2️Operations & Field Execution  • Oversee pan-India Solar O&M execution including preventive and corrective maintenance. • Ensure SOP compliance, SCADA monitoring discipline, and performance optimization. • Drive generation performance improvement and minimize downtime. • Manage regional teams and third-party service partners. • Ensure structured issue closure to prevent billing blockage. • Enforce cost control and margin discipline across AMC portfolio. 3️Client & Account Management  • Act as primary escalation authority for AMC clients. • Manage contractual enforcement and service scope adherence. • Drive long-term lifecycle engagement with clients. • Maintain professional relationships with consultants, regulators, and government authorities. • Ensure structured communication and quarterly performance reviews. 4️Vertical Governance & Reporting  • Establish formal governance structure across AMC sites. • Maintain site-wise operational, billing, and collection trackers. • Present monthly dashboards covering: • Revenue vs realization •  • Ageing analysis •  • Operational KPIs •  • Compliance status •   • Eliminate informal processes and build audit-ready systems. • Standardize documentation, escalation matrix, and review cadence. 5️Team Leadership & Development  • Lead and mentor regional O&M teams. • Define performance KPIs for field engineers and vendors. • Build second-line leadership for scalable operations. • Ensure training, compliance, and safety standards across sites. FIRST-YEAR EXPECTATIONS  • Stabilize AMC billing and realization cycle. • Reduce receivable ageing within defined limits. • Improve renewal conversion rate. • Implement standardized MIS & governance framework across portfolio. • Build structured reporting and review cadence with management. REQUIRED QUALIFICATIONS & EXPERIENCE  • Bachelor’s Degree in Electrical / Mechanical Engineering. • 10–18 years of experience in renewable energy, Solar O&M / AMC leadership roles . • Experience managing multi-site solar portfolios. • Exposure to PSU, DISCOM, and private offtaker clients. • Demonstrated experience in: • AMC billing and revenue realization •  • Vendor management •  • Team leadership •  • Operational dashboards and MIS •   • Comfortable with client escalation and contractual enforcement. • EV AMC exposure is an advantage but not mandatory.  

  Management Trainee     WEBSITE: https://www.servotech.in/  Department: Human Resources Location: Rohini, Delhi Reporting To: AGM – HR / TA Lead  Role Objective  To support the Talent Acquisition team in executing recruitment processes, maintaining structured hiring workflows, and building a consistent candidate pipeline for ongoing hiring needs.  Key Responsibilities  1. Recruitment Coordination (Primary Focus)  ·       Assist in:  o   Job postings on portals (Naukri, LinkedIn, etc.)  o   Resume sourcing and database management  ·       Schedule interviews and coordinate with candidates and hiring managers  ·       Ensure smooth interview flow and timely communication  2. Resume Screening (Basic Level)  ·       Screen resumes based on:  o   Role requirements  o   Qualification and experience fit  ·       Share shortlisted profiles with seniors for review  3. Candidate Communication  ·       Conduct initial HR calls (basic qualification, availability, salary expectations)  ·       Maintain consistent follow-up with candidates  ·       Ensure positive candidate experience  4. Tracker & Data Management (CRITICAL)  ·       Maintain recruitment trackers in Google Sheets:  o   Candidate status  o   Interview schedules  o   Feedback updates  ·       Ensure accuracy, real-time updates, and no data gaps  5. Support in Offer & Joining  ·       Assist in offer documentation and coordination  ·       Follow up with selected candidates till joining  Skills & Competencies  Must-Have  ·       Good communication skills (verbal & written)  ·       Basic understanding of recruitment process  ·       Strong follow-up and coordination ability  ·       Attention to detail  Good to Have  ·       Familiarity with job portals (Naukri / LinkedIn)  ·       Basic Excel / Google Sheets knowledge  Qualification  ·       Graduate (MBA HR preferred but not mandatory)  ·       Fresher or up to 6 months internship in HR / Recruitment  Performance Metrics (KPIs)  ·       Number of profiles sourced per role  ·       Interview scheduling turnaround time  ·       Tracker accuracy (zero errors)  ·       Candidate follow-up effectiveness  ·       Support in closure timelines  Success Indicators (First 3 Months)  ·       Able to manage interview coordination independently  ·       Maintain error-free recruitment tracker  ·       Improve candidate response and follow-up speed  ·       Support team in closing positions faster