Hiring Founding Engineers

When to hire, where to find them, and how to assess them

A founding engineer is not simply the first developer employed by a startup. They are usually one of the first one to three technical hires, joining while the product, architecture, engineering practices and sometimes even the business model are still being defined.

Their decisions can influence how quickly the company reaches product-market fit, how easily it hires future engineers and how much technical debt it carries into its next stage of growth.

Early-stage teams are also becoming leaner. According to Carta, the median seed-stage startup now has only four employees, while engineering accounted for almost 30% of startup hiring during the first half of 2025.

That makes every early engineering hire disproportionately important.

Section	What it covers
When should you hire?	The signals that engineering has become a genuine business constraint
How many engineers do you need?	Building a small and complementary founding team
Salary benchmarks	What founding engineers may expect in the US and Europe
Equity	How risk, timing and salary influence equity packages
Location strategy	Office, hybrid, remote and international hiring
Where to find candidates	Reaching engineers who may not be actively looking
How to assess them	Evaluating delivery, ownership and technical judgement
HR and legal due diligence	Employment, equity, compliance and intellectual property
How Dataworks can help	Building the right founding engineering team

When should you hire a founding engineer?

Hiring should solve a genuine constraint, not simply demonstrate that the company is growing.

At the idea or early prototype stage, technical founders should normally remain closely involved in building the product. A non-technical founder may need a technical co-founder rather than trying to recruit an employee into what is effectively a co-founder position.

The right moment to hire often arrives when:

Product development is moving too slowly to test the company’s main assumptions.
Founders are spending more time maintaining the product than speaking with customers.
Customer commitments require greater reliability, security or technical depth.
The roadmap contains several important workstreams that cannot be delivered sequentially.
The technical founder has become the bottleneck for every decision, deployment and incident.
The company has enough funding and customer evidence to support a permanent technical hire.

A useful stage-based framework is:

Company stage	Typical engineering requirement
Idea or early prototype	Founders, potentially supported by specialist contractors
Pre-seed	First founding engineer, particularly if development is blocking validation
Seed	Two to four founding engineers with complementary capabilities
Early product-market fit	Three to six engineers, with the first specialist hires introduced
Series A	Clearer engineering levels, team structure and potentially the first engineering manager

These are not fixed headcount targets. A startup should hire when the volume or complexity of the work justifies it, not because another company raised a similar round and hired five engineers.

How many founding engineers should you hire?

For many seed-stage software companies, two or three founding engineers is the most effective starting group.

One excellent engineer can make significant progress, but also creates considerable dependency. They may become the only person who understands the architecture, deployment process and history behind important technical decisions.

The second and third hires should therefore bring complementary capability rather than duplicate the same background.

A typical early combination might include:

A product-oriented full-stack engineer who can turn customer problems into usable features.
An engineer with deeper backend, infrastructure, data or security expertise.
A second product engineer or AI specialist, depending on the company’s core product.

Avoid specialising too early : a seed-stage startup rarely needs separate engineers for frontend, backend, infrastructure, quality assurance and data. It usually needs people who can operate across those boundaries while maintaining strong standards in their main area of expertise.

The founding engineer title should also remain selective. Once the company has established its architecture, delivery model and engineering culture, new hires may still be early employees, but they are no longer founding the engineering organisation.

What should you pay a founding engineer?

Founding engineers should be benchmarked against experienced startup engineers, not against the average software developer.

The US Bureau of Labor Statistics places median software developer pay at approximately $133,000, with the highest 10% earning more than $211,000.

Carta’s startup compensation data recorded an average salary of approximately $189,000 for new engineering hires in June 2025.

Based on these benchmarks, a reasonable planning range for an experienced US founding engineer will often be approximately:

$160,000 to $220,000 in base salary

The final offer will depend on:

Funding stage and available runway.
Company location and working model.
The maturity of the existing product.
The engineer’s technical specialism.
The amount of leadership and product ownership involved.
The level of salary being exchanged for equity.

AI and machine learning engineers may command higher compensation. Carta found that median AI and ML engineering salaries increased by 9.1% between January 2024 and February 2026, while initial equity grants increased by 31%.

European salaries remain lower, but should be benchmarked by country.

Ravio’s March 2026 benchmarks for established to advanced individual-contributor software engineers were:

UK: £70,000 to £88,900.
Germany: €78,700 to €94,000.
France: €68,000 to €83,500.

A genuine founding engineer may need to be positioned towards the top of, or above, these ranges because the role carries broader responsibility than a conventional engineering position.

Founders should define their compensation philosophy before opening the role:

Will salaries be based on the employee’s location or the company’s headquarters?
What market percentile is the company targeting?
How much cash can realistically be exchanged for equity?
How will compensation be reviewed after the next funding round?
How will the company maintain fairness between early employees?

Without a clear approach, individual negotiations can create pay inequalities that become increasingly difficult to correct.

How much equity should a founding engineer receive?

Equity should reflect risk, contribution, timing and the amount of salary the candidate is sacrificing.

Carta analysed more than 9,000 initial equity grants made to startups’ first ten employees.

The first employee received a median four-year equity grant of approximately 1.4% to 1.5% of the fully diluted company.

By the sixth hire, the median had fallen to approximately 0.3%. Around 65% of the first six employees in the dataset were engineers.

A pre-product engineer joining an unproven company, accepting a significant salary reduction and assuming responsibility for the entire technical function may justify considerably more.

A founding engineer joining a well-funded seed company, receiving close to market salary and inheriting an existing product may receive less.

Founders should clearly explain:

The percentage of the fully diluted company represented by the grant.
The number and type of options or shares.
The vesting schedule and cliff.
The current strike price and latest valuation.
What happens if the employee leaves.
How future fundraising may dilute the percentage.
Whether refresh grants may be available later.

At seed stage, Carta reports that the median employee equity pool represents approximately 12.1% of the company. Equity should therefore be planned across the complete hiring roadmap, rather than negotiated independently for every candidate.

Where should founding engineers be located?

The best location is not automatically the cheapest market or the city with the largest engineering population.

Founders should first determine how the team genuinely needs to work.

Co-location or regular office attendance can be particularly valuable when:

The product is changing every week.
Engineers need frequent access to customers.
Product and technical decisions happen continuously.
The founders have limited experience managing distributed teams.
Less experienced engineers require closer support.

Remote and distributed hiring can work extremely well when the company already has strong written communication, clear ownership and meaningful working-hour overlap.

Ravio reports that 85% of UK technology companies support hybrid working, while 39% support fully remote roles.

A distributed founding team should still define:

Minimum working-hour overlap.
How often the team will meet in person.
Where the company can legally employ people.
Whether compensation will be localised.
Who will pay for travel.
How product and architectural decisions will be documented.

Do not hire engineers in Europe simply because salaries appear lower than in the US. Hire there because the company can properly employ, lead and integrate them. Employment law, payroll costs, benefits and equity taxation differ significantly between countries. There is no single European employment or employee option framework.

Where can you find founding engineers?

The strongest candidates are rarely applying indiscriminately to roles carrying the “Founding Engineer” title.

They are more likely to be reached through:

Former colleagues and trusted referrals.
Founder and investor networks.
Engineering leaders at companies one or two stages ahead.
Specialist technical communities.
Open-source projects and technical events.
Targeted direct outreach.
Specialist recruiters with access to early-stage engineering talent.

The message used to approach them should explain the problem, not simply list the technology stack.

Strong candidates want to understand:

What the company is building.
What has already been validated.
Why the founders are credible.
What technical constraints currently exist.
What they will personally own.
How much influence they will have.
What risk they are being asked to take.
What success could mean for them financially and professionally.

“Join us as a founding engineer and build from zero” is not enough. Candidates should be shown the product, customer evidence, funding position, roadmap and the decisions they will be trusted to make.

How should you assess a founding engineer?

Traditional algorithm questions provide limited evidence of whether someone can succeed in an ambiguous early-stage environment. The assessment should answer six questions.

Can they build?

Have they personally delivered meaningful production systems, rather than only managing teams or contributing around the edges?

Can they make product decisions?

Can they distinguish between what is technically interesting and what customers actually need?

Can they operate without structure?

Can they create priorities and define solutions without waiting for perfectly written tickets?

Can they make sensible trade-offs?

Do they know when to move quickly and when security, reliability or scalability cannot be compromised?

Can they communicate?

Can they explain technical decisions clearly to non-technical founders, customers and investors?

Can they improve the engineers hired after them?

Will their code, documentation, standards and behaviour create a foundation for a future team?

A practical interview process might include:

A founder conversation focused on motivation, risk and expectations.
A detailed review of something the candidate built from its earliest stage.
A working session around a realistic product and architecture problem.
A code or system review focused on reasoning rather than syntax.
References from a former manager, engineering peer and commercial or product stakeholder.

Useful questions include:

Tell us about a shortcut you deliberately accepted.
Which technical decision have you later reversed?
Describe a production incident for which you were personally accountable.
When have you challenged a founder or product decision?
Which feature did you decide not to build, and why?
How would you approach the first 90 days in this company?

These discussions often reveal more than a generic coding test. A short working exercise can also be useful when evidence is limited, but it should not replace a structured interview process.

HR and legal due diligence

The company’s operational foundations should be ready before the offer is signed.

The final checklist should cover:

Right-to-work verification.
Employee versus contractor classification.
Local payroll, benefits, leave and tax obligations.
Employment agreements.
Confidentiality, intellectual property and invention assignment.
Equity approval and supporting valuation.
Vesting and departure provisions.
Reference and background checks where appropriate.
Security policies and access controls.
The implications of employing someone in another state or country.

In the US, employers must verify identity and employment authorisation through Form I-9. Worker classification must also be considered carefully when deciding whether someone is genuinely a contractor or should be treated as an employee.

Requirements can vary significantly between US states.

European contracts, termination rights, employer costs, benefits and option taxation must also be reviewed locally, rather than managed through one standard European agreement.

The final principle

The best founding engineer is not necessarily the candidate with the most prestigious employer, the most fashionable technology stack or the highest score on a coding exercise. It is the person who can turn ambiguity into a working product, make intelligent compromises, challenge the founders constructively and leave behind an engineering organisation that is stronger than any individual contributor.

-Hire them when engineering has become a constraint on learning or growth.

-Give them genuine ownership. Assess what they have built, how they make decisions and how they operate when there is no established process.

-Then compensate them in a way that reflects the risk and responsibility you are asking them to take.

Related Resources

Best Practices to partner with an AI Recruitment Agency
Hiring in the US
Building Your First GTM Team
US Salary Guide

Building your founding engineering team with Dataworks

Hiring the first engineers in a startup is fundamentally different from recruiting into an established technology organisation.

The candidate pool is smaller. The role is less clearly defined. The best candidates are rarely actively applying, and the cost of hiring the wrong person can affect product delivery, fundraising and the wider company culture.

At Dataworks, we partner with startups and scale-ups across the US and Europe to hire founding engineers, early technical leaders and complete product and engineering teams.

We support founders before, during and after the search.

This includes helping companies:

Decide whether they are ready to hire.
Define the first two or three engineering profiles.
Separate genuine requirements from unnecessary wish lists.
Benchmark salary and equity across different locations.
Select the right hiring market and working model.
Build an interview process that tests ownership, judgement and delivery.
Position the opportunity to engineers who are not actively looking.
Run a structured and transparent process that keeps strong candidates engaged.

Our searches are not based solely on technology keywords.

We assess whether candidates have built products in uncertain environments, influenced commercial and product decisions, taken accountability for outcomes and created foundations that future teams can build upon.

This is particularly important when hiring founding engineers. A technically impressive candidate may still struggle if they need established processes, narrow responsibilities or a large support structure around them.

Dataworks gives founders access to specialist engineering networks across the US, UK and Europe, while providing the market feedback needed to refine the role, compensation package and hiring strategy.

Whether you are hiring your first engineer, replacing an early technical hire or building a complete engineering function, we can manage the search from initial market mapping through to offer acceptance.

Building your founding engineering team? Speak to Dataworks about the talent market, compensation package and search strategy required to secure the right early technical hires.