Energy Modelling Specialist

Optima Recruitment seeks an Energy Modelling Specialist to deliver energy modelling and compliance strategies for commercial refurbishment projects. The role requires expertise in IES VE, dynamic thermal modelling, and BREEAM assessments. Candidates should have a strong technical background, excellent communication skills, and the ability to work independently. The position is hybrid, requiring 3-5 days in the office in Shepperton, UK, with a competitive salary based on experience.
Role: Energy Modelling Specialist (IES VE)

Location: London (3-5 days in office, hybrid flexibility)

Salary: Competitive (dependent on experience)

About the Role:

We are a multidisciplinary sustainability consultancy delivering energy modelling, compliance, and building performance strategies across commercial refurbishment and fit-out projects.

We are looking for an Energy Modelling Specialist with strong technical capability in IES VE and a proven track record of delivering real project outputs (not just exposure).

The role will support BREEAM/NABERS Assessments, EPC Compliance and wider building performance analysis within commercial refurbishment and fit out projects.

Ability to deliver:

Dynamic thermal modelling (DSM)

TM52 overheating assessments

TM54 operational energy modelling

Non-domestic EPCs and BRUKL reports

Passive design analysis

Part L compliance modelling

Support Low and Zero Carbon (LZC) feasibility studies

Contribute to BREEAM energy credits, including:

ENE 01 (energy performance, whole building and component)

ENE 04 (LZC technologies and passive design)

HEA01 (Daylighting)

Interpret results and produce clear, client-facing technical reports

Coordinate with design teams (architects, MEP, contractors) to inform design decisions

Work independently across multiple projects and deadlines

Essential Requirements

Strong hands-on experience using IES VE (ApacheSim essential)

Demonstrable experience delivering:

TM52 overheating analysis

TM54 energy modelling

EPCs for non-domestic buildings

Solid understanding of:

UK Building Regulations Part L

Dynamic simulation modelling principles (e.g. CIBSE AM11)

BREEAM RFO and New Construction

Proven experience supporting BREEAM energy credits (ENE 01 minimum)

Ability to produce high-quality, technically accurate reports independently

Strong communication skills - able to explain modelling outputs to non-technical stakeholders

Degree (2:1 or above preferred) in a relevant discipline

Critical Requirements that applicants must be able to provide:

Examples of completed IES VE models and reports (e.g. TM52, EPC, BRUKL)

Clear explanation of their specific role in delivering those outputs

Demonstrated involvement in BREEAM energy credits (not just awareness)

Desirable

Experience with NABERS UK assessments

Experience working on commercial fit-out / CAT A & CAT B projects

Familiarity with Part O overheating assessments

Candidate Profile

Detail-oriented and technically rigorous

Comfortable working in a consultancy environment with multiple deadlines and integrates well with the rest of the team

Proactive and able to manage workload independently

Strong problem solving skills with a practical approach to modelling

Ability to work with minimal oversight and deliver on programme

Additional Requirements

Willing to commute to the Cobham office 3 days per week

Full UK driving licence and access to a car

Level open to:

Strong mid-level candidates (2-5+ years experience), or

More senior candidates capable of leading modelling workstreams