In September 2013, Angelson was added to the cast of the
Showtime series
House of Lies as Caitlin Hobart. In 2014, Angelson replaced
Mamie Gummer as Det. Nicole Gravely in
Backstrom for which
Deadline Hollywood named Angelson one of the best casting discoveries of the year. In 2016, she starred in the
Amazon Video original series
Good Girls Revolt. The series was cancelled by Amazon after one season. She co-starred in
The Upside, the American remake of the French film
The Intouchables. In 2019, Angelson was cast in
Flack, starring alongside
Anna Paquin, as well as the second season of the
DC Comics show
Titans.
Variety named Angelson one of the
Top Ten TV Stars to Watch. In December 2021, Angelson appeared back to back on primetime NBC in
This Is Us and
New Amsterdam, recurring on both shows. She is a main cast member of
The Afterparty on
Apple TV+ created by
Phil Lord and Christopher Miller. She plays the leading role of Mae on
The Chicken Sisters, adapted from the book by
KJ Dell'Antonia. She originated the role of Nina in
Vanya and Sonia and Masha and Spike, winner of the
Tony Award for Best Play at the
67th Tony Awards, in which Ben Brantley called her "exquisite." She has appeared in multiple other plays
off-Broadway, including
The Cake by
Bekah Brunstetter at
Manhattan Theatre Club and the world premiere of
Joe DiPietro's
Babbitt at the
La Jolla Playhouse. She is a published writer. Her work has been featured in
Town & Country,
Refinery29 and
Elle. ==Filmography==