Hi,
The answer is Physiotherapist.
Why? - As per your profile, you are a sitter by professional and young (28yrs) and you have developed postural deformity. In both the short and long run, this posture can lead to imbalances in your neck, shoulder, and shoulder blade muscles leading to neck pain. Treating yourself holistically will help you get better and prevent your from worsening.
Next Steps
Consult a physiotherapist understand posture correction, ergonomic advice as per your workstation or environment, learn right scapula stabilization exercise, stretch and release, neck strengthening exercises and if required pain management.
Health Tips
Right time to treat and prevent further complications.