Handler mHandler = new Handler();
int mDelay = INITIAL_DELAY;

// try request
mHandler.postDelayed(mDelay, new Runnable() {
   public void run() {
      // try your request here; if it fails, then repost:
      if (failed) {
          mDelay *= 2;  // or as per your formula
          mHandler.postDelayed(mDelay, this);
      }
      else {
          // success!
      }
   }
});

Retryer<Boolean> retryer = RetryerBuilder.<Boolean>newBuilder()
        .retryIfResult(Predicates.isNull())
        .withWaitStrategy(WaitStrategies.exponentialJitterWait(Duration.ofSeconds(15), 0.5D))
        .build();
retryer.call(callable);