This is related to the prolong sitting job. The back pain
is from the bad discs. Regular exercise and if possible swimming is helpful in relieving the back pain. You need to work on your back muscles and need to make them real strong so that they support your spine. Avoid long travels in sitting position. If possible need to make changes in job profile. If the pain persist then it comes to surgery such as either spinal fusion
or disc replacement surgery. Thanks.