Pre-Seed, Seed, Series A: When to Build Links In-House, When to Hire an Agency, When to Ignore It

You’re building a startup. You’ve heard link building matters for SEO. But you’re not sure when to start, how much to invest, or whether to handle it yourself or hire someone else.

Here’s the truth: link building isn’t a one-size-fits-all strategy. What works at Series A can be wasteful at pre-seed. What makes sense to outsource at seed stage might be better handled in-house later.

This guide walks through exactly when to build links in-house, when to hire an agency, and when to skip link building entirely—broken down by your startup’s funding stage.

Understanding Link Building at Different Startup Stages

Before we dive into specifics, let’s get clear on what link building actually means at each stage.

At pre-seed, you’re validating product-market fit. Your website might be a landing page. You’re focused on getting your first customers, not ranking for competitive keywords.

At seed stage, you have some traction. You’re building content, establishing a brand, and starting to think about organic growth channels. Link building might help, but resources are still tight.

At Series A, you have proven growth channels and are scaling what works. SEO might be a key pillar of your growth strategy, and link building becomes a more serious investment.

Pre-Seed Stage: When to Ignore Link Building Completely

Let’s start with the most controversial advice: at pre-seed, you should probably ignore link building entirely.

Your priority is finding product-market fit. You need to validate that people want what you’re building. Every hour and every dollar should go toward talking to customers, iterating on your product, and testing your core assumptions.

Link building takes time and money. Even if you do it yourself, you’re spending hours reaching out, creating content, and building relationships. That time is better spent on your product and your first ten customers.

The Rare Exceptions at Pre-Seed

There are a few situations where link building makes sense this early:

You’re in a content-first business model. If your entire business is built on organic traffic—think media sites, content platforms, or SEO tools—then yes, start building links from day one.

You have a technical SEO background. If link building is second nature to you, and you can get high-quality links with minimal time investment, go for it. But don’t learn link building from scratch at this stage.

PR opportunities fall in your lap. If you get featured in TechCrunch or a major industry publication without trying, great. Take the link. But don’t actively chase these opportunities yet.

For everyone else? Skip it. Focus on survival first.

Seed Stage: When to Start Building Links (Carefully)

At seed stage, you have some breathing room. You’ve raised money, you have a team, and you’re starting to think about growth channels beyond word-of-mouth and paid ads.

This is when link building starts to make sense—but only if you approach it strategically.

Should You Build Links In-House at Seed Stage?

Building links in-house at seed stage works if you have someone on your team who already knows how to do it. This could be a content marketer, a growth person, or even a founder with SEO experience.

The advantage of going in-house is control. You’re building relationships directly, creating content that fits your brand voice, and learning what works for your specific industry.

The downside is time. Link building is slow. It takes consistent effort over months to see results. If your team is already stretched thin, this might not be the best use of internal resources.

When to Hire an Agency at Seed Stage

Hiring an agency at seed stage makes sense if link building isn’t your core competency and you want results faster.

A good agency brings expertise, relationships, and processes you don’t have to build from scratch. They know which tactics work, which publications to target, and how to avoid penalties.

The challenge is finding the right agency. Many agencies over-promise and under-deliver. You need someone who understands startups, works within your budget, and focuses on quality over quantity.

If you’re looking for reliable high-authority link building services that align with your growth stage, working with a specialized team can save you months of trial and error.

The Hybrid Approach: Best of Both Worlds

Many seed-stage companies take a hybrid approach. They handle some link building internally—like guest posting on industry blogs they already know—while outsourcing more technical or time-intensive tactics to an agency.

This gives you flexibility. You maintain control over your brand and relationships while leveraging external expertise where it makes sense.

Series A: When Link Building Becomes a Real Channel

At Series A, the game changes. You have a proven business model, a larger team, and the resources to invest in channels that take time to pay off.

Link building should now be a deliberate part of your SEO strategy. The question isn’t whether to do it, but how to do it most effectively.

Building an In-House Link Building Team

At Series A, building an in-house link building function starts to make sense if SEO is a core growth channel for your business.

An in-house team gives you full control over strategy, messaging, and relationship-building. You can align link building with your broader content strategy, product launches, and brand initiatives.

You’ll want at least one dedicated person—a link builder, outreach specialist, or digital PR manager. They’ll need tools, a budget for outreach, and support from your content and SEO teams.

The downside is cost and ramp-up time. Hiring, training, and building processes takes months. You’ll also need to manage performance and keep your team motivated.

Working with an Agency at Series A

Even at Series A, many companies continue working with agencies. The difference is scale and sophistication.

At this stage, you’re not just buying links. You’re partnering with an agency to execute complex campaigns—digital PR, journalist outreach, data-driven content, and strategic partnerships.

Agencies bring scalability. They can ramp up or down based on your needs, and they have relationships and tools that would take years to build internally.

The key is finding an agency that acts as an extension of your team, not just a vendor. You want someone who understands your business, communicates regularly, and aligns their work with your broader marketing goals.

The Hybrid Model at Scale

Many Series A companies run a hybrid model at scale. They have an internal link building lead or strategist who manages agency partners, oversees quality, and handles high-value relationships directly.

This model combines the best of both worlds. You get the scalability and expertise of an agency with the oversight and strategic control of an in-house team.

How to Decide: A Framework for Your Startup

Still not sure which approach is right for you? Here’s a simple framework to help you decide.

Ignore link building entirely if: You’re pre-seed and focused on product-market fit, you have no one on your team with SEO experience, or you’re in a space where SEO isn’t a viable growth channel.

Build links in-house if: You have someone on your team who knows how to do it, you’re at seed or Series A with bandwidth to execute, or you’re in a niche industry where relationships matter more than scale.

Hire an agency if: You’re at seed or Series A and want faster results, you don’t have in-house SEO expertise, or you need to scale link building quickly without hiring a full team.

Use a hybrid approach if: You’re at seed or Series A and want strategic control with external scalability, or you have some internal expertise but need support on execution.

What Good Link Building Actually Looks Like

Regardless of whether you build in-house or hire an agency, you need to know what good link building looks like. Too many startups get burned by bad tactics.

Good link building is about earning links from relevant, authoritative sites that your target audience actually reads. It’s about creating content worth linking to and building genuine relationships with journalists, bloggers, and industry leaders.

Bad link building is buying links from link farms, spamming irrelevant sites with generic pitches, or chasing quantity over quality. These tactics don’t work and can get you penalized by Google.

At every stage, focus on quality. One link from a respected industry publication is worth more than a hundred links from random blogs no one reads.

Common Mistakes Startups Make with Link Building

Let’s talk about what not to do. These are the most common mistakes startups make at each stage.

Pre-seed mistake: Spending time and money on link building before validating product-market fit. This almost always ends badly. Focus on your product first.

Seed stage mistake: Hiring a cheap agency that promises hundreds of links for a few hundred dollars. You’ll get garbage links that hurt more than they help. Quality costs money.

Series A mistake: Building an in-house team without a clear strategy or senior oversight. Link building needs direction. Don’t just hire someone and hope they figure it out.

Another mistake at every stage: not aligning link building with your content strategy. Link building works best when you have great content to link to. Create linkable assets first, then promote them.

Budget Benchmarks by Stage

How much should you actually spend on link building? Here are rough benchmarks based on your stage.

Pre-seed: $0 per month. Seriously. Spend nothing. Your money is better spent elsewhere.

Seed stage: $1,000 to $5,000 per month if working with an agency. This gets you consistent outreach and a handful of quality links per month. In-house will cost less cash but more time.

Series A: $5,000 to $20,000+ per month, depending on how aggressively you’re scaling SEO. At this stage, you might have a full-time hire ($80k+ salary) plus agency support.

These are broad ranges. Your actual budget depends on your industry, competition, and how important SEO is to your growth strategy.

Comparison: Agency vs In-House vs Ignoring It

Key Signals That It’s Time to Invest in Link Building

Not sure if you’re ready? Here are the signals that tell you it’s time to start taking link building seriously.

You have consistent organic traffic. If Google is already sending you visitors, link building will amplify that. If you’re starting from zero, focus on content first.

You’re ranking on page two for important keywords. Links can push you from page two to page one, where the real traffic lives. This is one of the highest-ROI scenarios for link building.

Competitors are outranking you despite having similar or worse content. If their backlink profiles are stronger, that’s why they’re winning. Time to level the playing field.

You have a content library worth linking to. Link building works best when you have linkable assets—original research, comprehensive guides, tools, or unique data. Build these first.

You have budget and bandwidth. Link building requires sustained investment over months. If you can’t commit for at least six months, wait until you can.

How to Vet a Link Building Agency

If you decide to hire an agency, here’s how to separate the good from the bad.

Ask for case studies from similar-stage startups. You want proof they’ve worked with companies like yours and delivered results.

Request samples of the sites they can place links on. If they won’t share this, walk away. Transparency is non-negotiable.

Ask about their outreach process. Good agencies personalize every pitch and build real relationships. Bad agencies send mass emails and buy links.

Check their own backlink profile. If they can’t rank their own site, how will they help you rank yours?

Ask about reporting. You should get regular updates on outreach efforts, links earned, and the impact on your rankings and traffic.

Measuring Link Building Success

How do you know if your link building is working? Here are the metrics that matter.

Number of referring domains. This is the most important metric. More unique domains linking to you signals authority to Google.

Domain authority of linking sites. One link from a high-authority site beats ten links from low-authority sites. Use tools like Ahrefs or Moz to track this.

Keyword rankings. Are you moving up for your target keywords? Link building should improve your rankings within 3-6 months.

Organic traffic. The ultimate goal. More links should lead to better rankings, which should lead to more traffic.

Don’t obsess over vanity metrics like domain rating or total backlinks. Focus on referring domains from quality sites and the traffic impact.

Tools You Need for Link Building

Whether you’re building links in-house or managing an agency, you need the right tools.

For research and prospecting, use Ahrefs or SEMrush. These show you where competitors are getting links and help you find opportunities.

For outreach, use tools like Pitchbox, BuzzStream, or even just Gmail with a CRM. You need a system to track who you’ve contacted and follow up consistently.

For monitoring, use Google Search Console and your SEO tool of choice. Track new backlinks, monitor changes in rankings, and watch for any manual penalties.

Don’t overbuy tools. At seed stage, you can get by with Ahrefs and Gmail. Save the fancy outreach platforms for when you’re scaling.

Link Building Tactics That Work at Each Stage

Let’s get tactical. Here are specific link building strategies that work at each funding stage.

Seed stage tactics: Guest posting on industry blogs, creating original research or surveys, getting listed in relevant directories, and doing podcast interviews.

Series A tactics: Digital PR campaigns with data-driven content, journalist outreach for features and quotes, creating linkable tools or calculators, and strategic partnerships with complementary brands.

At every stage, broken link building works. Find broken links on relevant sites, reach out to the site owner, and suggest your content as a replacement. It’s helpful and effective.

Resource page link building is another evergreen tactic. Find pages that list resources in your industry and pitch your content for inclusion. This works especially well for guides and tools.

Conclusion: Match Your Link Building Strategy to Your Stage

Link building isn’t something every startup needs to do right away. The right approach depends entirely on your funding stage, your team, and your growth strategy.

At pre-seed, ignore link building entirely. Focus on product-market fit and getting your first customers. At seed stage, start building links carefully—either in-house if you have the expertise, or with a trusted agency partner. At Series A, make link building a core part of your SEO strategy with a dedicated team, agency support, or both.

The key is matching your approach to your resources and goals. Don’t waste time and money on link building before you’re ready, but don’t wait so long that competitors build an insurmountable advantage.

If you’re at seed or Series A and ready to scale your link building efforts strategically, consider working with a team that understands startup growth dynamics and can deliver quality links that actually move the needle.

Frequently Asked Questions