Modern Garden Design with Seating and Fire Pit

I'm looking for a landscape architect or a skilled garden designer to create a modern-style garden for me. 550sqm block with a small backyard and a large front yard needs reimagining.

Key requirements include:
- Design should incorporate an outdoor seating area and a fire pit
- Selection of low-maintenance plants
- Retaining wall
- Vegi patch or small greenhouse

Ideal skills and experience:
- Expertise in modern garden aesthetics
- Experience with hardscaping and plant selection for low-maintenance gardens
- Creative and practical design solutions

Please provide samples of previous work and estimated timelines.