She previously has held the posts of District Collector of Pathanamthitta[1] and Mission Director of Mahatma Gandhi NREGA.

[8] Iyer was a doctor before she began her civil service career and continues to practice medicine.

[12][13] In 2018, Iyer was transferred from her role as Sub-Collector to Deputy Secretary in the Local Self-Government Department.

[14][15][16] Iyer then served as the Mission Director of the Mahatma Gandhi National Rural Employment Guarantee Scheme (MNREGS).

[25] In 2021 and 2022, Iyer and district police chief R Nishanthini helped coordinate the annual Sabarimala pilgrimage, and did not attempt to enter the temple.

[31] On 30 June 2017, Iyer married Congress MLA representing Aruvikkara constituency, K. S. Sabarinadhan in Kumarakovil, a temple at Thuckalay in Kanyakumari district, becoming the first MLA-IAS couple in Kerala.