Hiring your first software engineer, without guessing.
Your first engineer shapes your codebase, your technical culture and often your next five hires. Today they also need to work well with AI coding tools, which changes what a strong candidate looks like. This guide covers timing, profile, interviews and the first weeks in the job.
Are you ready to hire a software engineer yet?
A full-time engineer makes sense when there is ongoing development work for the foreseeable future, a product direction that is reasonably stable, and enough runway to pay a competitive salary for at least a year. If you are still testing whether anyone wants the product, a short contract or an external team is often a better use of money.
The hardest part for non-technical founders is evaluating skills they cannot judge directly, which is why the first hire goes wrong more often than later ones. Bring in an experienced engineer or advisor to help define the role and run the technical assessment, even if only for a few hours.
Think too about who the engineer will learn from. A first hire works without a senior colleague to check their decisions, so they need enough experience to make sound calls alone, and the humility to ask for help when they should.
What to look for in a first engineering hire
Broad, full-stack range
They will touch the database, interface, deployment and integrations in the same week. Narrow specialists often struggle alone.
Product judgement
The best first hires ask why a feature matters and suggest simpler ways to reach the same outcome.
Disciplined AI fluency
They use AI coding tools to move quickly, and they read, test and question the output rather than accepting it wholesale.
Clear communication
They can explain a technical trade-off to a non-technical founder in plain language, in writing and out loud.
Ownership of production
They care about backups, monitoring and security without being asked, because nobody else is there to catch it.
Comfort with ambiguity
Early priorities change often. Look for evidence they have shipped useful work without a detailed specification.
A hiring process for your first software engineer
Define outcomes, not a wish list
Write what the engineer should achieve in their first six months, then work out the skills that requires. Resist listing every technology you have heard of.
Source through networks first
Referrals, founder communities and contributors to relevant open-source projects tend to produce stronger candidates than cold job-board applications.
Screen with a conversation about past work
Ask candidates to walk through something they built: the decisions, what went wrong and what they would do differently.
Run a realistic exercise with AI allowed
Set a small task that resembles your actual work, allow the tools they would use on the job, then review the result together.
Check references on behaviour
Ask former colleagues how the candidate handled pressure, disagreement and mistakes, not just whether they were talented.
Make a clear offer quickly
Good engineers have options. Be specific about salary, equity, expectations and how success will be measured.
How to evaluate the way candidates use AI
Banning AI in interviews tests a way of working that barely exists any more. Allowing it without scrutiny tests nothing. Watch how candidates work with it.
| Weak signal | Strong signal | |
|---|---|---|
| Framing the problem | Pastes the whole task in and hopes | Breaks it down and gives the tool useful context |
| Reviewing output | Accepts generated code as long as it runs | Reads it, spots mistakes and explains why they matter |
| Testing | Clicks through the happy path | Writes or requests tests for edge cases |
| Explaining the result | Cannot say why the code works | Walks through the logic and the alternatives considered |
| Security and data | Pastes secrets or real data into tools | Knows what should never leave your environment |
| When the AI is stuck | Keeps regenerating the same answer | Switches to docs, debugging and first principles |
Have these ready before your engineer starts
Company-owned accounts
Code repository, cloud provider, domain and email set up under the company, with the engineer invited rather than owning them.
A clear first project
A meaningful but contained piece of work they can ship within their first few weeks.
An agreed policy on AI tools
Which AI coding tools are approved, on which plans, and what code or data may be shared with them.
Access to users and context
Customer conversations, support tickets and the reasoning behind the roadmap.
An outside reviewer
An experienced engineer or advisor to review early architecture decisions, since nobody internal can.
Questions we often hear
When should a startup hire its first software engineer?
Usually once there is continuous development work, a reasonably clear product direction and at least a year of funding for the salary. Before that, founders often get better value from contractors or an external team while they validate the idea.
Should my first engineer be senior or junior?
Senior, or at least solidly mid-level. A first engineer makes architecture, security and tooling decisions with nobody to review them, and mistakes in those areas are expensive to unwind. Junior engineers do best once there is someone experienced to learn from.
How do I interview a software engineer if I am not technical?
Focus your own interviews on communication, product thinking and ownership of past work, and bring in an experienced engineer for the technical assessment. A fractional CTO or technical advisor can design the exercise, run the interview and give you a clear recommendation.
Should candidates be allowed to use AI in coding interviews?
In most cases yes, because they will use AI tools on the job. The interview should test how well they use them: how they break down the problem, whether they review and test generated code, and whether they can explain the result without the tool.
How much does it cost to hire a software engineer?
Beyond salary, budget for benefits, equipment, software tools including AI coding assistants, recruitment fees if you use an agency, and the founder time spent hiring and onboarding. Our developer hiring cost calculator compares the full cost of hiring against freelance, agency and augmentation options.
Related reading and tools
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