The 15 best places to work in 2021, according to Glassdoor

Bain & Company was the top-rated company on Glassdoor's 2021 Best Places to Work list.Rick Friedman/Getty Images

• Glassdoor just released its annual ranking of the Best Places to Work.
• This ranking is based on employee feedback on Glassdoor over the past 12 months.
• Among the companies that typically make the list, like Bain & Company and Google, there were 19 first-time appearances, including Pfizer at No. 39.

If you're wondering which companies are good places to apply to, why not ask the employees who already work there?you may want to check at the companies that are highly rated by a company's own employees.

On Tuesday, Glassdoor released its 13th annual Best Places to Work list, a ranking of 100 companies based on employee feedback over a 12-month period. Companies on the list are defined as those that have at least 1,000 employees, and there is also a separate list for smaller ones. (The full methodology, like the metrics used, can be found on Glassdoor.)

Andrew Chamberlain, chief economist at Glassdoor, told Insider that some of the companies that made the list this year "were on the frontlines of the fight against COVID" including two of the 19 companies that joined the ranking for the first time: Pfizer, which developed a coronavirus vaccine with BioNTech, and Northwell Health, which was the first to give a vaccine to a frontline worker in the US.

Additionally, Chamberlain notes that companies that were highly ranked this year not only did well on the three main factors Glassdoor usually sees in these companies - being a mission-driven company with great senior leadership and career development opportunities - but also made employee health and safety a main priority.

Read more: THE JOB HUNTER'S TOOL KIT: The ultimate tips, tricks, and resources for finding your dream job during the pandemic and beyond

Companies at the top of the list fall under different industries, such as In-N-Out burger, Lululemon, HubSpot, and Stryker.

Chamberlain said some companies in the hardest-hit industries amid the pandemic made the list like Delta Air Lines and Marriott International because of their company response to the pandemic. There were 10 retail companies and nine travel and tourism companies on the large company list this year.

Additionally, some companies moved up this year. Apple moved up from No. 84 last year to No. 31 this year. Nvidia also moved up from No. 20 to No. 2.

Keep reading to check out the top 15 companies and read the full list of all 100 companies on Glassdoor. Employee quotes are courtesy of Glassdoor and industries are from Glassdoor company pages.