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Presales Engineer

Persol ApacApplies on LinkedInSales
Hiring from
Vietnam
Work type
Remote
Posted
Sep 30, 2026
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Position: Pre-Sales Engineer (Inverter & ESS) (Signed contract with PERSOL)

Working mode: Fully remote, with customer/site visits as required

Location: Ha Noi & Da Nang

Working time: 9:00 AM – 6:00 PM (Mon - Fri), 10 AM - 3 PM (Saturday)

Department: Sales / Business Development


Key Objective

The Pre-Sales Engineer will be responsible for supporting PERSOL clients' C&I business development in Vietnam by identifying and developing potential customers, working closely with EPC contractors and solar installers, providing technical solutions, and converting qualified opportunities into C&I partner agreements and sales projects.


Key Responsibilities

1.Technical Pre-Sales

  • Provide technical support and consultation on PV inverters, ESS and C&I solar solutions.
  • Analyze customer requirements and recommend suitable PERSOL clients' products and system configurations.
  • Prepare technical proposals, system designs, layouts, specifications and technical reports.
  • Support customers and EPC partners with system sizing, inverter selection, ESS configuration and solution design.
  • Conduct technical presentations, product demonstrations and customer consultations.
  • Support project bidding, tender submissions and proposal preparation.
  • Ensure proposed solutions comply with applicable Vietnamese electrical codes, regulations and safety standards.

2. Business Development & Sales

  • Identify, qualify and develop potential C&I customers, EPC contractors, solar installers, developers and other industry partners.
  • Develop relationships with EPC companies and key industry stakeholders to generate new business opportunities.
  • Understand customer requirements, decision-making processes and purchasing criteria.
  • Support negotiations and commercial discussions to convert opportunities into sales contracts and C&I partner agreements.
  • Follow up on sales opportunities from initial enquiry through proposal, negotiation and contract closing.
  • Build and maintain long-term relationships with customers and strategic partners.

3.Market & Competitor Analysis

  • Conduct market research on Vietnam's solar PV and energy storage market.
  • Monitor market trends, customer requirements and regulatory developments.
  • Track competitor products, pricing, technical solutions and market activities.
  • Provide regular market and competitor feedback to management.

Job Requirements

Technical Skills

  • Bachelor's degree in Electrical Engineering, Energy Engineering, Renewable Energy or a related field.
  • Strong knowledge of solar PV systems, PV inverters and ESS.
  • Good understanding of inverter design principles, MPPT technology and power conversion efficiency.
  • Knowledge of C&I solar and energy storage applications.
  • Knowledge of relevant electrical codes, standards and safety requirements.
  • Ability to understand and use solar PV system design software.
  • Ability to recommend appropriate inverter and ESS solutions based on customer and project requirements.

Sales & Business Development Skills

  • Proven experience in technical sales, pre-sales engineering or B2B sales.
  • Experience in the solar PV, inverter, ESS or renewable energy industry is preferred.
  • Ability to identify and qualify potential customers and business opportunities.
  • Strong communication, presentation and negotiation skills.
  • Ability to explain technical concepts clearly to both technical and non-technical customers.
  • Strong relationship-building and customer management skills.
  • Self-motivated and able to work independently in a remote working environment.

Preferred / Advantageous

  • Experience working with EPC contractors, solar installers or developers in Vietnam.
  • Experience with C&I solar projects.
  • Knowledge of competing inverter and ESS brands.
  • Experience with solar monitoring and data analysis platforms.
  • Existing network of EPC contractors, installers or C&I customers in Hanoi, Da Nang or surrounding regions.
  • Good command of English is preferred.

Performance Expectations

  • The successful candidate is expected to: Develop a strong pipeline of C&I opportunities.
  • Establish and maintain relationships with EPC and installer partners.
  • Generate qualified project opportunities.
  • Support successful technical proposals and project tenders.
  • Convert qualified opportunities into C&I partner agreements and sales.
  • Contribute to revenue growth for PERSOL clients' Vietnam C&I business.

Package & Benefits

  • Income: Competitive base salary based on capability, plus business travel allowances (transportation, accommodation, per diem), 13th salary.
  • Commission: based on applicable sales/project value
  • Training: Participate in in-depth training courses on the latest Inverter and BESS technologies from Deye's senior technical experts.
  • Welfare: Full social insurance, health insurance, unemployment insurance, and paid leave/holiday bonuses as per regulations.
  • Environment: Work in a professional, dynamic multinational energy technology environment with a clear career progression path to service management positions.

Apply & Contact

  • Phone/Zalo: 0918196610 (Ms. Mai)
  • Email: mai.xuanhuynh@persolapac.com

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