Assistant Business Development Manager (Energy Solutions / Solar)

We are looking for an Assistant Business Development Manager to drive business growth and develop energy-saving solutions for customers in the Manufacturing Technology (Manu Tech) and Property Technology (Prop Tech) sectors.

The successful candidate will be responsible for identifying business opportunities, building a strong sales pipeline, understanding customer requirements, developing customized solutions and proposals, and managing the sales process through project closing.

Our solutions include solar energy, energy-saving systems, operation management solutions, building management services, digital platforms, analytics, and monitoring systems.

Key Responsibilities

• Develop new business opportunities within the Manufacturing, Industrial, Property, and Building Management sectors

• Manage and expand relationships with existing customers while continuously building a new sales pipeline

• Identify customer requirements, operational challenges, and energy-saving opportunities

• Work with internal technical and engineering teams to design appropriate solutions based on customer needs

• Prepare business proposals, solution presentations, project scopes, and commercial quotations

• Present solutions related to:

  • Solar energy systems
  • Energy-saving and energy-efficiency solutions
  • Building operation and management services
  • Digital platforms and monitoring systems
  • Data analytics and performance monitoring
  • Customized solutions based on customer requirements

• Manage the end-to-end sales process, from lead generation and customer engagement to proposal development, negotiation, and project closing

• Conduct market analysis and identify new target customers or business opportunities

• Coordinate with internal teams, partners, vendors, and customers to ensure successful project development

• Visit customer sites, including locations outside Bangkok and in other provinces

• Maintain accurate sales forecasts, pipeline reports, and customer activity records

Qualifications

• Bachelor’s degree or higher in Engineering, Energy Management, Business Administration, Marketing, or a related field

• At least 3–5 years of experience in Business Development, B2B Sales, Solution Sales, Project Sales, or a related role

• Experience working with customers in the Manufacturing, Industrial, Property, Real Estate, Energy, or Building Management sectors is preferred

• Experience in a System Integrator (SI), energy solution, solar, smart building, automation, IoT, or technology solution business will be an advantage

• Able to understand customer requirements and translate them into business or technical solutions

• Experience preparing proposals, presentations, quotations, or project business cases

• Strong communication, presentation, negotiation, and relationship management skills

• Proactive, target-oriented, and comfortable working in a project-based sales environment

• Able to work independently, coordinate with cross-functional teams, and manage multiple opportunities simultaneously

• Must be able and willing to travel to customer sites in other provinces as required

• Having a valid driving license and access to a personal vehicle will be an advantage

• Good command of English is an advantage