Senior Design Engineer Solar Energy & BESS

axian group; Philippines; On-site; PHP 5,653,000 - 7,538,000; Full time

Job summary

axian group is seeking a Senior Design Engineer for Solar Energy and BESS to lead the technical design office, covering sizing, grid connection, and bankable studies for large PV projects. You will drive designs from concept through detailed engineering and deliverables for lenders and clients.

The role requires 5+ years in design or PV development, fluency with PVsyst and related tools, and the ability to coordinate across project teams while traveling internationally as needed.

Qualifications

• 5+ years in a design office or PV development role.
• Proven track record on utility-scale projects >10 MWp.
• Experience with BESS is a strong asset.

Responsibilities

• Carry out feasibility studies and detailed preliminary designs for PV plants (10–200+ MWp) with/without BESS.
• Size PV systems and energy storage components; perform production simulations.
• Produce bankable engineering reports and draft technical specifications.
• Prepare BOMs, CAPEX estimates and tender responses.
• Mentor junior engineers and support technical negotiations.

Skills

PV plant design

Grid connection expertise

BESS integration

Technical leadership

Education

Engineering degree (5-year, Master’s) in electrical engineering

Renewable energy specialization is a plus

Tools

PVsyst

AutoCAD / SketchUp

Advanced Excel

Job description

Job Title : Senior Design Engineer — Solar Energy & BESS

Department : Technical & Engineering Department

Reports To : Head of Engineering

Contract Type : Permanent Contract (CDI)

Location : Head Office Antananarivo Madagascar + occasional project/trade-show travel (International)

CONTEXT & KEY CHALLENGES

Our technical design office develops large-scale photovoltaic solar power plants — from 10 MWp to several hundred MWp — with or without coupling to battery energy storage systems (BESS). Our projects operate in complex environments: high-voltage grid connection, grid integration, and optimization of injected energy and industrial self-consumption (very large scale C&I).

Joining the team as a Senior Engineer, you will be the go-to technical expert relied on by project managers for business developments, sales, and delivery teams. Your expertise directly shapes the quality and bankability of the complete studies we produce.

DUTIES & RESPONSIBILITIES

• Carry out feasibility studies and detailed preliminary designs (APS/APD — concept and detailed design stages) for PV plants ranging from 10 to 200+ MWp, with or without BESS
• Size PV systems (modules, inverters, transformers, MV/HV cabling) and energy storage systems (lithium-ion, DC/AC topology)
• Perform production simulations using PVsyst or equivalent tools and analyse P50/P90 results.
• Design single-line electrical diagrams, site layout plans, and shading studies.
• Produce bankable engineering reports (ready for lender's technical advisor (LTA) review)
• Draft technical specifications for equipment and works tenders
• Prepare bills of materials (BOM), quantity take-offs, and detailed CAPEX cost estimates
• Assess site data (irradiation, topography, geotechnical conditions, grid connection)
• Prepare technical responses to tenders and draft the technical sections of commercial proposals.
• Be a source of proposals for technical and economic optimizations based on proven solutions from the international market.
• Assess project technical risks and propose mitigation solutions.
• Take part in client meetings and support BizDev/sales teams during technical negotiations

Grid Coordination & Expertise

• Liaise with grid operators on high-voltage grid connection studies.
• Oversee grid studies and ensure regulatory compliance (IEC, EN, NFC standards)
• Coordinate input from third-party design offices (geotechnical, environmental, structural)
• Supervise and validate deliverables from junior and mid-level engineers on the team

Technology Watch & Continuous Improvement

• Maintain an active technology watch (new PV & energy conversion technologies, BESS systems, hybrid solutions)
• Contribute to improving the design office's methods and tools.
• To assist with monitoring suppliers and their qualification process in conjunction with the procurement department
• Take part in post-construction lessons-learned reviews to improve future designs (REX postmortem).
• Train and support less experienced engineers in developing their skills

EDUCATION & EXPERIENCE

Education

• Engineering degree (5-year, Master's level) in electrical engineering, energy, or power engineering
• Specialization in renewable energy is a plus

Experience

• Minimum 5 years in a design office or PV development role
• Proven track record on projects >10 MWp (utility scale)
• BESS (Battery Energy Storage System) experience is a strong asset

TECHNICAL SKILLS

Software Proficiency

• PVsyst (advanced proficiency — required)
• AutoCAD / SketchUp (design drawings)
• Advanced Excel (sizing calculations, BOM)

Technical Areas

• MV/HV electrical engineering, grid connection
• IEC 62109, IEC 61724, EN, NFC 15-100 standards
• Bankability and engineering reports (due diligence)