Batmanglij produced their self-titled debut album shortly after graduation while concurrently working multiple full-time jobs.

He also produced the band's follow-up album, Contra, which sold 124,000 copies in its first week and landed atop the Billboard 200 charts.

[14] Batmanglij plays guitar, keyboard and sings in the band but also acts as a lyricist and songwriter, co-writing the song "Diplomat's Son" on Contra.

Time Out Chicago's Brent DiCrescenzo gave the song 4 out of 5 stars and wrote that "his voice pleasantly recalls a drowsy David Byrne".

[19] On November 1, 2011, Zane Lowe debuted another a solo song sung by Batmanglij called "Don't Let it Get to You" as the Hottest Record in the World on BBC Radio 1.

[22] On March 11, 2016, Batmanglij released the song "Gravity Don't Pull Me" along with its music video directed by himself and Josh Goleman.

[31] Batmanglij produced and co-wrote two songs for the Walkmen frontman Hamilton Leithauser's solo album, Black Hours, which was released in June 2014.

[35] In December 2014, Batmanglij along with Diplo and Ed Droste remixed Ty Dolla Sign's "Stand For" into a new song titled "Long Way Home".

[36] Batmanglij also wrote original music for a play by Kenneth Lonergan called This Is Our Youth, starring Kieran Culkin, Michael Cera, and Tavi Gevinson, which premiered on Broadway in 2014.

In 2015, Batmanglij worked alongside Canadian singer Carly Rae Jepsen on her third studio album, Emotion.

In an interview with Stereogum, Jepsen described working with Batmanglij as writing with a musician she admires, and said that together they had made "what’s maybe one of [her] favorite songs" on the record.

[41] Batmanglij produced and co-wrote the song "Listen to Your Friends" from English singer Declan McKenna's debut album, What Do You Think About the Car?, which was released in July 2017.