Senior Energy Modeller

Senior Energy Modeller 

About the Company

SJ Group is a globally recognised, multidisciplinary consultancy shaping the future of the built environment through integrated design, engineering, and digital solutions. With over 75 years of proven project delivery, the company operates across 110 offices in 44 countries, supported by a team of approximately 15,000 specialists delivering impactful infrastructure, energy, and urban development projects worldwide. Beyond its strong technical expertise, SJ Group fosters a collaborative and forward-thinking culture, bringing together diverse talent in a “one global collective” that values innovation, inclusivity, and shared success. The organisation emphasises partnership, continuous learning, and purpose-driven work, empowering its people to push boundaries, harness technology, and create sustainable, meaningful impact for communities locally and globally.

About the role 

We are seeking a Senior Energy Modeller to join the SJ’s Sustainability & Resilience Office in Singapore. This is a specialist technical role focused on advanced building performance simulation, energy modelling, decarbonisation strategy support, and quality assurance for high-performance building and infrastructure projects. The role is intended to strengthen local modelling capability, provide responsive support to project teams and clients, and bridge delivery between Singapore and the broader regional/GDC team.  

Position purpose 

Lead the development and execution of robust building energy models and related building performance simulations to support sustainable design, Green Mark / LEED / other certification pathways, decarbonization studies, and high-performance building outcomes.  

Key responsibilities 

• Lead whole-building energy modelling for design-stage and compliance-stage studies across complex building types and major projects. 

• Develop, review, and optimize energy models to support sustainability targets, decarbonization pathways, high-performance design, and authority/certification submissions. 

• Carry out parametric, sensitivity, and scenario analysis to inform passive and active design decisions at concept, schematic, and detailed design stages. 

• Support or lead complementary simulations where needed, including thermal comfort, daylight, glare, passive design, and related building performance studies. 

• Interpret architectural, façade, MEP/ACMV, and controls documentation to ensure modelling assumptions are technically sound and project-specific. 

• Work closely with project directors, sustainability consultants, and MEP/design teams to translate modelling outputs into actionable design recommendations. 

• Establish and uphold modelling QA/QC standards, improve consistency and speed of delivery, and reduce project delivery risk. 

• Act as a client-facing technical specialist for energy modelling matters in Singapore and the region. 

• Mentor junior analysts/modellers and help build technical capability across the SRO & Atelier Ten and interfacing teams. 

• Coordinate with offshore/GDC resources where relevant and serve as the technical interface between local and remote delivery teams. 

Candidate profile / essential requirements 

• Bachelor’s or Master’s degree in Building Science, Mechanical Engineering, Architectural Engineering, Sustainable Design, Integrated Building Design, or a related discipline. 

• Strong experience in building energy modelling and sustainable building design, ideally in consulting environments handling complex non-residential or mixed-use projects. 

• Demonstrated experience with recognised modelling platforms such as IES VE, EnergyPlus, DesignBuilder, OpenStudio, or equivalent. 

• Strong capability in geometry/model preparation using tools such as Rhino, SketchUp, Revit, or similar platforms. 

• Experience in interpreting architectural, ACMV/MEP, and construction documentation for simulation inputs and calibration of design assumptions. 

• Familiarity with Green Mark, LEED, PRM/code compliance workflows, energy audits, high-performance buildings, zero-energy / zero-carbon studies, or equivalent frameworks. 

• Ability to perform or guide supporting studies such as daylighting, glare, thermal comfort, passive design optimisation, and envelope-related sensitivity analysis. 

• Strong interpersonal, communication, and stakeholder management skills, with the ability to explain technical findings clearly to internal teams and clients. 

• Self-driven, quality-focused, and comfortable working under project deadlines across multiple concurrent assignments. 

Preferred qualifications 

• Singapore or regional project experience, especially with local submission workflows and authority expectations. 

• Experience supporting high-performance building and decarbonization projects in tropical climates. 

• Experience in client presentations, technical reviews, and senior-level design advisory. 

• Exposure to scripting, automation, or data analytics (for example, Python or workflow automation) would be advantageous. 

• Experience mentoring junior team members or leading technical reviews would be highly valued.