Hello.
I am a GIS(Geographical Information System) expert and Web&Mobile(iOS&Android) developer.
Since 10 years before I have been developing GIS applications.
I graduated GIS special education course and I have rich experiences for development Desktop,Web and Mobile GIS applications.
as a GIS developer, I can develop any kind of GIS application based on ArcServer,GeoServer and GoogleMaps,OSM,MapBox,OpenLayers,PostGIS and PostgreSQL and MS SQL.
And I have many Web technologies such as PHP, Java,C# etc.
I checked your requirement and I am very interesting in your project. I have worked on many GIS application development.
I already have one project like similar this.
I guess this is relevant to ISOCHRONE in Graph theory.
If you can get the Intersect between ISOCHRONEs that are generated from each points, the intersecting points will be Meeting points.
I think so.
I know this can be done by GraphHopper or OpenTripPlanning.
But to be honest, I have an experience on the GraphHopper , don't have on the OpenTripPlanning.
I applied my customized algorithm for Let's Meeting.
I would like to heard from you.
thank you.