Why the people you barely remember are your greatest career asset.
You’ve likely heard the advice to tap into your network. So, you contact your closest connections: former bosses, good friends, and people who know you well and would recommend you in a heartbeat.
And then… nothing happens.
It’s not that they don’t care. They do. But the truth is, your closest connections are often the least likely to help you get your next job.
The person most likely to help you? Most likely, it’s someone you barely remember.
The Research That Changes Everything
In 2022, researchers from MIT, Stanford, Harvard, and LinkedIn published one of the largest peer-reviewed studies ever conducted on professional networking in Science magazine. They analyzed 20 million LinkedIn users over five years, tracking 2 billion new connections and 600,000 job changes.
The finding was counterintuitive: moderately weak ties create the most job mobility. Not your closest colleagues. Not strangers. The sweet spot is in between.
MIT professor Sinan Aral put it simply: “When we look at the experimental data, weak ties are better, on average, for job mobility than strong ties.”
This confirms what sociologist Mark Granovetter proposed back in 1973 with his “strength of weak ties” theory. But until this study, no one had proven it at scale with causal data. Now there’s proof, and it should completely change how you think about networking.
Why Your Close Network Isn’t Your Best Bet
Think about your five closest professional contacts. You probably have a lot in common: similar industries, shared connections, and similar career stages.
That’s the problem.
Your close network can become an echo chamber. They know what you know, have heard what you’ve heard, and are connected to the same people as you.
When a new opportunity surfaces in their world, chances are you’ve already seen it too.
Your weak ties, however, are part of different circles. They hear about opportunities you might never discover on your own.
Think about that former colleague you haven’t spoken to in three years, the person you met briefly at a conference, or the connection who liked your post, but you’ve never actually talked to.
These are your most valuable connections.
The Inverted U: Why “Weaker Isn’t Always Better”
This is where things get more nuanced.
The LinkedIn study found that the relationship between tie strength and job transmission isn’t linear. It’s an inverted U.
Too strong = same information you already have.
Too weak = no trust, no action.
The ideal connections are moderately weak ties—people you know just enough.
Harvard Business School professor Iavor Bojinov explained it this way: “It’s not a matter of ‘the weaker the better’ or ‘the stronger the worse.’ The greatest job mobility comes from moderately weak ties, social connections between the very weakest ties and ties of average relationship strength.”
This means that a random stranger you message on LinkedIn probably won’t help. But someone two degrees away, who a mutual connection could introduce you to, is much more likely to make a difference.
The Magic of Second and Third-Degree Networks
LinkedIn shows you three types of connections:
- 1st degree: People you’re directly connected to
- 2nd degree: People connected to your connections
- 3rd degree: People connected to your 2nd-degree connections
Most job seekers put all their energy into 1st-degree connections, but that’s a mistake.
Your 2nd and 3rd-degree networks are much larger, and research shows they’re more likely to reveal new opportunities.
Here’s why:
When LinkedIn’s “People You May Know” feature suggests connections, it’s highlighting your most promising weak ties. These people are close enough to share mutual connections, which builds trust, but distant enough to offer new information and opportunities.
A 2026 analysis of LinkedIn data found that professionals who strategically cultivate moderately weak ties gain a significant competitive advantage in career advancement. Those who focus only on strengthening existing close ties miss out on key opportunities.
The takeaway is to stop trying to deepen every relationship and instead focus on strategically expanding your network.
The 500+ Threshold (And Why It Matters)
There’s another data point worth knowing.
Industry research suggests that having more than 500 connections can improve recruiter visibility. Profiles with fewer connections show up less often in searches and may seem isolated.
Though it’s not only about the number, it’s also about the opportunities those connections can unlock.
Each new connection you add greatly expands your 2nd and 3rd-degree network. For example, a profile with 500 connections might reach over 50,000 2nd-degree connections, 50,000 people who could be introduced to you through a warm referral.
According to recruiter surveys, warm introductions can increase interview invitation rates by 3–5x compared to cold applications.
The numbers are clear; a broader network of weak ties is more effective than a small group of strong connections.
Industry Matters: One Size Doesn’t Fit All
The LinkedIn study also found that the impact of weak ties varies by industry.
In the digital and tech industries, weak ties had the strongest effect on job mobility. Information flows quickly, roles change frequently, and opportunities surface through loose networks.
In less digital industries, strong ties played a larger role. Trust and reputation matter more. Referrals carry more weight when they come from someone who knows you well.
Understand your industry. If you work in tech, consulting, or other fast-moving fields, focus on building a wide network. In traditional sectors where relationships develop over time, balance having a broad network with building deeper connections.
What This Means for Your Job Search
If you’ve been focusing on your closest contacts and not seeing results, this explains why.
Your strong ties want to help, but they’re limited to the same information and networks you already know.
Your weak ties, the ones you may have overlooked, often have access to opportunities you can’t see.
This isn’t about using people. It’s about recognizing that help often comes from unexpected places, and making it easy for people to help you.
Here’s how to shift:
1. Reconnect with dormant ties.
Look through your LinkedIn connections and find people you haven’t spoken to in a year or more. A simple message like, “I was thinking about you and wanted to reconnect,” can open new doors. I’ve seen clients land interviews from connections they hadn’t spoken to in five years. One message. One conversation. One referral.
2. Make yourself easy to describe.
When a weak tie thinks of you, can they describe what you do in one sentence? If they can’t, you’re likely to be overlooked. (This is the One-Sentence Test I wrote about earlier this week on LinkedIn)
3. Ask for introductions, not jobs.
Instead of asking weak ties for a job, ask them to introduce you to someone in their network. This is a smaller, easier request and helps you tap into the power of 2nd-degree connections.
4. Expand strategically.
Accept connection requests from people in related industries and engage with content from those outside your immediate circle. Each new connection expands your 2nd-degree network.
The Uncomfortable Truth
We often learn that relationships should be deep, and that those who know us best will advocate for us the most.
In life, that’s often true.
In job searching, the data says otherwise.
The opportunities you’re missing aren’t hidden; they’re just one degree further out than you’ve been searching.
Your best friend may not get you hired, but the colleague of your former colleague’s former colleague just might.
Ready to Build a Network Strategy That Actually Works?
This is exactly what we do in the Job Search Accelerator. We don’t just polish your CV or optimize your LinkedIn; we help you build a network strategy, position yourself, and make the right requests so you become a candidate who gets referred.
If this message resonated with you, let’s connect.
I'm Kirsten, and I help international professionals take control of their story and find the right roles.