Versatile Developer for Custom Build

I’m planning a tailor-made solution that will evolve as the concept takes shape. At this stage the exact feature set is still fluid, so your ability to switch between front-end and back-end tasks, recommend the best tech stack, and iterate quickly will be key... (Budget: $15 - $25 USD, Jobs: Agile Development, Backend Development, Frontend Development, Full Stack Development, HTML, JavaScript, PHP, Software Architecture)