RSJ Calculation for Load-Bearing Wall Removal

I need structural calculations and RSJ (Rolled Steel Joist) specifications for removing a load-bearing brick wall spanning 3 to 5 meters.
For building regulations submission, 2 x walls to be removed.
Requirements:
- Structural engineer with experience in residential projects
- Expertise in load-bearing wall assessments
- Knowledge of RSJ sizing and installation

Please provide:
- Detailed structural calculations
- RSJ size and type recommendations
- Any necessary drawings or documentation

Ideal Skills & Experience:
- Degree in Structural Engineering
- Relevant certifications
- Previous experience with similar projects
- Strong attention to detail and accuracy