Core-Java senior 4 geofencing implementation

We look for Java Spring-Boog or Core-Java senior expert with in depth knowledge on how to implement a geofencing for polygones. You implement a simple geo position detection based on detecting if the position is inside or outside of polygones. 1. rectangle 2. radius you will get a excel with a list of GPS coordinates. you will require to define mutiple GPS polygones against you can test your given data. Preferably this polygones are also provided as a Excel list Your job will be to implement the logic for the geofencing and to propose java libraries, which will help to solve this problems. Milestones Assuming following existing classes, which you have to recommend from your suggested libs and apis - Distance (calculate/gives a distance in meters from a desired point) - GpsPolygone (defines a arbitrary geo fence in GPS coordinates) - GpsPosition (any position in GPS coordinate) MS1: Implement a service class, which calculates if a given List or Point of GPS coordinates is in a given Polygone The service is wrapped into interfaces (classes) - Distance getShortestDistanceToPolygone(GpsPosition, GpsPolygone) - boolean isGpsPositionInsidePolygone(GpsPosition, GpsPolygone) - implemen.t unit tests, which run & test this code (you provide as a very first step empty JUnit methods as runners which call the interface and use the autowired services) - the unit tests read the gps coordinates and polygones from xlsx files and run the unit tests as parametrized tests against the service class(es) MS2: - List<GpsPosition> getGpsPositionsOutsidePolygone(List<GpsPosition>, GpsPolygone) - List<GpsPosition> getGpsPositionsInsidePolygone(List<GpsPosition>, GpsPolygone) more milestones to be awarded based on your expertise Implementations: - the gps positions and polygones are predefined under src/test/resources as xlsx, so it can be easily modified by non tech guys for more corner cases NO UI for now required! NO database required! No REST endpoint exposing for the above named methods required! (only consuming the apis in the given links) Your background is: - multiple years of experience with GIS / geo spacial data in Java - multiple years of experience with Java If you are a good fit, you are open to get more tasks about implementing solutions fully on your own (e.g. with your team) Budget? will not be disclosed, place your best bid to get considered What is next? We will share you a NDA and afterwards a paid test task. Payment? - you estimate in a WBS (optimistic, expected, pessimistic, where optimistic < expected < pessimistic) after getting the task - we discuss about clearances and effort - we mutually agree to effort - we assign you the task after mutually agreed - you implement & delivery - we pay (basically the rules of freelancer) Closed book vs open book? We work only on open book. Closed book means you are unwilling to define a WBS for the work and you add only a price tag to the task. We are sorry we will not hire you in such a case! Deliveries? - in our on premise git (access will be granted to you) - full sources - maven - clean code - best practices in the given topics - libs, need prior confirm and we prefer to use mostly latest stable versions - JDK 17 (mostly LTS) - your api access code working on our end - used libs and apis are on latest stable version - docker compose setup to run locally on your machine and (we will use it on CI/CD, if you are able to handle we place you an addition milestone for it)