Though Sachdev is not a frequent stage performer, he has participated in several world tours and concerts. In 2010, 2011 and 2012, he performed in Zee Night Concerts around the world along with Chotti Bahu co-star, Rubina Dilaik. He participated in Zee Heroes with a Mamta Sharma concert (2012) and Udit Narayan with Zee stars concert (2013) in South Africa. Sachdev worked as an event manager in his last few Show Time Creations concerts held in South Africa.

In 2012, Sachdev ventured into business, opening several fashion stores in Mumbai. Avinash has a passion for directing —— behind the camera work.

His first notable acting role was in a TVS Scooty commercial. Later he did several television commercials for Cadbury Dairy Milk, GRT Jewellers eBay and Sun Feast. Sachdev secured his first television role in the soap opera Karam Apna Apna (2006) and was finalised for the leading roles in Sapna Babul Ka…Bidaai and Mere Ghar Aayi Ek Nanhi Pari. However, Dev in Chotti Bahu (2008) was his first leading role. It earned him an Indian Telly Award for Fresh New Face (2009) and a Zee Rishtey Award for Popular Male Face of the year 2009. In 2013, he played the lead character Shlok Agnihotri in Iss Pyaar Ko Kya Naam Doon?…Ek Baar Phir. In 2015, Sachdev joined the cast of Qubool Hai Season 4 as the lead. Balika Vadhu season 2 (2016) was his third television project with Sphere Origins. In 2019, he played the character of Madhav in Main Bhi Ardhangini.

In 2015, he married his Iss Pyaar Ko Kya Naam Doon?…Ek Baar Phir co-star and television writer Shalmalee Desai. They got divorce in 2017

Sachdev first worked as a volunteer assistant director on Hatim (2004) when he was 18 years old. He also assisted Farhan Akhtar in Rock On!! (2008). In 2016, Sachev made his directorial debut with a short online travel documentary, Mumbai to Ladakh, which was based on his personal road trip to Ladakh. In the same year, he released his second online travel documentary, Trek to Anjanari.

In 2017, primarily because of Sachdev’s contribution to the Indian TV show Iss Pyaar Ko Kya Naam Doon?…Ek Baar Phir (dubbed as Tatli Bela in Turkey), he became the second Indian actor after Bollywood legend Raj Kapoor to visit Azerbaijan. The same year, he was invited to Turkey for a fan meet and greet event organised by Kanal 7 for the fans of Tatli Bela to meet Avinash Sachdev as Shlok Agnihotri from Iss Pyaar Ko Kya Naam Doon?…Ek Baar Phir.