Heat Exchanger Design for Chemical Processing

I'm working on a project that requires a heat exchanger design and estimation capable of both heating and cooling gases and liquids . The engineer needs to develop detailed boq and provide costing

The ideal freelancer for this job should have extensive experience and expertise in:
- Designing shell and tube heat exchangers.
- Selecting and integrating materials suitable for chemical processing.
- Balancing the exchanger's capacity for both heating and cooling.
- Ensuring the design can handle both gases and liquids efficiently.
- developing detailed boq and costing of raw materials
- manhours required for the job and consumables

Please provide examples of your past work in this area. I'm looking for a freelancer who can take this project from concept to completion, delivering a robust and effective solution.