According to talent officers at Salesforce and American Express, the most successful new hires exhibit these three behaviors.

Starting a new job can be both exciting and intimidating.

Despite some employers having comprehensive onboarding procedures, the level of support when beginning a new job can vary. Nonetheless, it is imperative for new employees to establish a solid foundation and position themselves for success from the outset.

Lori Castillo Martinez, executive vice president of talent, growth and development at Salesforce, shares with CNBC Make It that the initial weeks of a new job can significantly influence the trajectory of one's career.

Castillo Martinez aims to facilitate the integration of new hires into the Salesforce culture swiftly and efficiently, even though no onboarding process will be the same. Many of the strategies she suggests can be applied to any company to set new hires up for success.

Many workers may soon be focused on making the most of their new job as the percentage of people looking for a job in the U.S. reached a decade high of 28% in August, according to the New York Federal Reserve's latest poll of consumers, and over half of U.S. companies surveyed by Robert Half, a recruitment and staffing firm in New York, say they are preparing to hire this fall and winter.

As soon as you begin a new job, professionals advise prioritizing the following three things: building relationships with colleagues, understanding company culture, and setting clear goals for yourself.

Figure out the logistics

On the first day of a new job, employees should consider what success in their new company entails, according to Sonia Cargan, chief talent officer at American Express. Cargan emphasizes that this involves understanding the unique logistics of working within the new team and company.

Cargan states that teams are frequently diverse and constantly changing.

Your manager can be asked questions such as: How does your team prefer to communicate? What is it like to work on this team? What is your leadership style like?

Castillo Martinez advises asking about team meeting schedules and crucial internal systems to be knowledgeable about.

Lean into relationships

Cargan advises starting by observing, asking questions, identifying people to connect with, and setting up coffee chats.

She emphasizes that the most impressive new hires are those who have focused on building relationships in their job. While it's important to do your job, building relationships can help you excel in your role, she adds.

Informal "trail guides" are also provided to new employees at Salesforce, who are not on their team but in an adjacent role, to answer any questions they may not feel comfortable asking.

Building relationships with colleagues in related departments can be achieved through attending social events, using company communication platforms, or reaching out to them directly.

Castillo Martinez advises new hires to inquire about navigating the office, unwritten rules, and what they wish they knew on their first day.

Identify your purpose

Understanding the company you're joining and how you can make a direct impact in your new role is crucial, according to Castillo Martinez.

"Starting a new job is an opportunity to view everything with fresh eyes and determine your purpose, identity, and how you want to present yourself in the company," Castillo Martinez remarks.

Cargan advises successful new hires to balance respect for the organization's past with the uniqueness they bring to the organization.

What works for one person may not work for another, and Castillo Martinez advises new hires to remain inquisitive and open to trying out various methods.

"As a new hire, you have the chance to shape your own experience, Castillo Martinez advises. It's worth exploring and being open-minded to discover your purpose and determine the kind of impact you want to make as a new hire."

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