Write a custom layer in Keras model

Job ID: 31781775

Budget: $10 – $30 CAD

What I need a template to add ANY custom layer to a Keras sequential model.
IT should contain a block to calculate forward pass and backward gradient.
It should not contain available layer in Tensorflow (tf.nn.*).
For example a template to re-construct Resnet with custom convolutional layer (assuming I want to alter behavior of convolution).
The code should work in a complex sequential model and should not work only on some models only.

Budget is negotiable max in $30 or so.
Deadline is negotiable around 3 days.
Related categories: Python Tensorflow Keras Deep Learning