Presales Engineer

RelyEZ Energy Storage; España; On-site; EUR 60,000 - 90,000; Full time

Job summary

RelyEZ Energy Storage is expanding in Europe, seeking a presales engineer to design turnkey BESS solutions for European utility-scale and C&I projects. You will configure system topology (PCS/EMS, thermal, fire protection) aligned with local grid codes, and deliver comprehensive presales documents.

Travel across Europe to engage with sales teams and customers is expected. The role requires 1–5 years in BESS presales, English and Spanish fluency, strong proposal writing, and the ability to work

Qualifications

• Bachelor's degree in Electrical Engineering or related field, plus additional certifications preferred.
• 1–5 years of BESS presales/solution experience for utility or C&I energy storage.
• Familiarity with BESS system structure: PCS, EMS, battery container, fire & thermal systems.
• Knowledge of European grid codes (G99/G100, VDE, CE, etc.) preferred.
• Fluent in English and Spanish for client communication, presentations and negotiations.
• Strong logic, proposal writing, and customer-oriented mindset.
• Willingness to travel within Europe and collaborate with sales teams.
• Overseas presales experience in energy storage is highly preferred.

Responsibilities

• Provide turnkey BESS solutions for European utility-scale and C&I projects.
• Design system topology and configurations (PCS/EMS, thermal, fire protection, grid connection) per local grid codes.
• Deliver presales documents: proposals, technical presentations, diagrams, BOMs, benefit analyses, and competitor comparisons.
• Attend customer meetings, answer technical inquiries, and conduct negotiations and clarifications.
• Prepare tender technical documents, response sheets, deviation sheets, and bid compliance checks.
• Research European grid standards, energy policies, grid codes, and certification requirements.
• Build and maintain a library of standardized European BESS solutions, FAQs, and training materials.
• Provide technical training for local sales, distributors, and partners.
• Identify presales risks (grid connection, compliance, technical matching) early in the process.

Skills

Proposal writing

Customer focus

English/Spanish

Education

Electrical Engineering

Job description

We are a professional energy storage system integrator focusing on Utility-scale BESS & Commercial & Industrial BESS. We are rapidly expanding our European market. This presales role fully supports local sales teams, responsible for technical solution design, customer technical communication, tender support, grid code compliance analysis, and sales empowerment. The core objective is to help sales win BESS projects and build long-term customer technical trust in Europe.

Key Responsibilitie

• Provide professional turnkey BESS solutions for European utility-scale and C&I energy storage projects
• Design system topology, PCS/EMS configuration, thermal management & fire protection solution, grid connection solution according to local grid codes
• Deliver full presales documents: proposal, technical presentation, single-line diagram, BOM, benefit analysis, competitor comparison
• Attend customer technical meetings, answer technical inquiries, conduct technical negotiation & clarification
• Be fully responsible for tender technical documents, technical response sheets, deviation sheets, bid compliance checking
• Research European local grid standards, energy policies, grid codes, certification requirements, and local market rules
• Build standardized European BESS solution library, FAQ library, and sales training materials
• Provide technical training for local sales, distributors and partners
• Identify presales risks including grid connection risks, compliance risks, technical matching risks in early stage

.Requirement

• Bachelor's degree or above in Electrical Engineering, Power System, Renewable Energy, Automation
• .1-5 years BESS presales / solution experience in utility & C&I energy storage
• .Familiar with BESS system structure, PCS, EMS, battery container, fire & thermal system
• .Knowledge of European grid codes (G99/G100, VDE, CE etc.) is preferred
• .Fluent English and Spanish for client communication, technical presentation and business negotiation
• .Strong logic, proposal writing skills and customer-oriented mindset
• .Able to travel locally in Europe and cooperate closely with sales team
• .Previous overseas energy storage presales experience is highly preferred

.Core Valu

• Act as the technical front door of the company's European market
• Improve project win rate and support fast European market expansion
• .Build localized European BESS presales system and technical barrier