using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var prioritizedJobs = new string[] { "Weapons", "Shields", "Life Support", "Engines" };

        var jobPriorities = prioritizedJobs.Select((job, index) => new {job, index}).ToDictionary(elem => elem.job, elem => elem.index);

        // jobPriorities now looks like: { Weapons: 0, Shields: 1, Life Support: 2, Engines: 3 }

        var availableTasks = new [] { 

            new { Name = "Calibrate Crystals", Job = "Engines" },

            new { Name = "Pointed Stick", Job = "Weapons" },

            new { Name = "Make Coffee", Job = "Life Support" },

            new { Name = "Cetacean Ops", Job = "Science" },

            new { Name = "Landing Party", Job = "Weapons" },

            new { Name = "Shovel Coal", Job = "Engines" }, 

        };

        var orderedAvailableTasks = availableTasks.OrderBy(task => jobPriorities.ContainsKey(task.Job) ? jobPriorities[task.Job] : int.MaxValue);

        Console.WriteLine(string.Join("\r\n", orderedAvailableTasks));

    }

}