The Founder’s Guide to Hiring a Developer
Hire for the decisions your product needs, not for the longest list of technologies.
Hiring a developer is difficult when you cannot confidently judge the work. A polished CV, quick answers and a long list of technologies can create reassurance without reducing the real risk.
The goal is not to become technical enough to conduct a perfect interview. It is to create a process where good judgment becomes visible and weak judgment becomes difficult to hide.
Define the job around the next year
Do not begin with a generic “full-stack developer” description copied from another startup. Describe the product stage, the decisions this person must make and the environment they will inherit.
An early product may need someone comfortable turning ambiguity into a small, maintainable system. A growing product may need someone who can improve reliability without stopping delivery. A team with a strong technical lead may be able to support a promising junior. A solo founder with no technical support usually cannot.
List the first three outcomes the hire should own. For example: stabilize an existing application, ship one validated workflow and establish a dependable deployment process. These outcomes make experience easier to evaluate than a checklist of frameworks.
Separate essential knowledge from technology that can be learned. Strong fundamentals, communication and ownership transfer across stacks. Exact library experience often does not.
Seniority is about independence
Years of experience are an imperfect measure. Seniority shows in the size and ambiguity of decisions someone can handle responsibly.
A senior developer should be able to identify missing requirements, explain tradeoffs, reduce scope, anticipate operating problems and ask for help before a risk becomes expensive. They do not merely write code faster. They reduce the amount of unnecessary code and improve the quality of surrounding decisions.
A junior developer can be excellent when the work is well defined and experienced review is available. Without that support, the founder becomes the product manager, technical lead and quality system without realizing it.
Be honest about the supervision your company can provide. Hiring someone cheap and independent only on paper is often the expensive option.
Use a real conversation, not trivia
Technical trivia rewards memory and interview practice. It tells you little about how someone will handle your product.
Give the candidate a realistic scenario with incomplete information. Ask how they would approach a new workflow, review an unreliable feature or choose between a fast implementation and a more flexible one. Let them ask questions.
Listen for structure. Do they clarify the user and risk? Do they expose assumptions? Can they explain tradeoffs without hiding behind terminology? Do they know what they would postpone? Do they distinguish a reversible choice from a dangerous one?
Good candidates often make the problem smaller before making the solution larger.
Review work with context
Code samples can help, but context matters. Ask what the candidate personally owned, what constraints existed, what went wrong and what they would change now.
For a practical exercise, keep it short and relevant. Pay for anything substantial. The exercise should reveal thinking, code clarity, testing habits and communication, not extract free product work.
Have a trusted senior developer review the result if you cannot. Ask for an assessment in business language: Is the approach understandable? Are important risks handled? Would another developer be able to continue? What level of supervision would this person need?
One review cannot predict every outcome, but it is better than judging by visual polish.
Test communication directly
Your developer will repeatedly explain uncertainty, delays and tradeoffs. Treat communication as part of the technical role.
Ask for a short written update after the exercise: what was completed, what remains, what assumptions were made and what should happen next. Notice whether the candidate surfaces problems or buries them.
Strong communication is not constant confidence. It is accurate status, useful questions and early warning. Beware candidates who promise every timeline, dismiss complexity or blame previous teams for everything.
Also notice whether they can disagree respectfully. You need someone who will challenge an unsafe shortcut or unnecessary feature, not someone who implements every founder impulse.
Make ownership concrete
Before hiring, agree on practical expectations:
- Where code and documentation live.
- How changes are reviewed and deployed.
- Who controls cloud and third-party accounts.
- What quality checks are required.
- How production issues are handled.
- What availability is expected.
- How priorities are set.
- What knowledge must not live with one person.
These are especially important with freelancers and software agencies, but employees need them too. Clear ownership prevents the founder from discovering too late that access, deployment or critical knowledge is missing.
Check references for behaviour
Do not ask references whether the person is “good.” Ask about observable behaviour.
What type of work did they handle independently? How did they respond when a plan changed? Did they communicate bad news early? What level of review did they need? Would the reference trust them with a critical system? What environment would help them succeed?
The answer may reveal a strong candidate who is wrong for your current stage. Fit is not a moral judgment. A developer who thrives in a structured team may struggle as the first technical hire, while an excellent startup generalist may dislike a specialized role in a larger organization.
Do not rush because development has stopped
Urgency makes founders lower standards precisely when the role carries the most leverage. A weak hire can add fragile code, delay the roadmap and make the next hire harder.
Use a short paid trial or tightly defined first project when appropriate. Keep access proportionate until trust is established. Review early work quickly. Set a clear checkpoint rather than hoping concerns disappear.
The right developer does more than turn tickets into code. They help the company make better technical decisions with the time, evidence and budget available. Hire for that judgment, then give it a process in which it can be seen.