You can start fractional or consulting work while employed if three things are true: your contract doesn't forbid it, the work doesn't compete with or use your employer's property, and you can give a client a fixed slot of time every week without touching your job's hours. Most leaders in tech clear all three. What stops them is the fourth thing, which is the fear of being seen. This guide covers the first three properly and the fourth honestly.
- Read your contract for three clauses: non-compete, outside activities (moonlighting) and IP assignment. Most allow non-competing work; some require written notice.
- Pick a time model before you pick a client: one fixed evening plus one weekend block, or one day a week of unpaid leave. Never "whenever I can".
- Sell to companies your employer would never sell to, in a role your employer doesn't have. That removes almost every conflict.
- Tell your manager if the contract requires it or if the work could become visible. Otherwise, keep it private and keep it clean.
- Your first client comes from someone who has already seen your work. No LinkedIn announcement needed.
What does your contract actually say?
Most people never read it, and most people assume it's stricter than it is. Find the signed contract and any employee handbook it references, and search for three things.
| Clause | What it usually says | What it means for you |
|---|---|---|
| Non-compete | You won't work for a competitor during employment (and sometimes for 6–12 months after). | Sell to companies that don't compete with your employer. In the US, the FTC's 2024 rule banning most non-competes was blocked in court, so state law applies; California voids them outright. In the EU, post-employment non-competes generally need to be paid to be enforceable, and during employment a duty of loyalty applies regardless. |
| Outside activities / moonlighting | You'll get written approval for other paid work, or you'll disclose it. | If it says "approval", ask. If it says "disclose", disclose in writing and keep the email. If it says nothing, you don't need permission, but the loyalty duty and the IP clause still apply. |
| IP assignment | Anything you create related to the company's business, or using its equipment or time, belongs to the company. | Never use your work laptop, work email, work Slack or work hours. Never build a product in the same category as your employer's. Keep a clean separation and you keep your IP. |
| Confidentiality | You won't share company information. | You can use what you know how to do. You can't use customer lists, internal data, roadmaps or unreleased numbers. Judgement is yours; information is theirs. |
If a clause is ambiguous, spend an hour with an employment lawyer in your country. It costs less than one client-day and it removes the question for good. I'm not a lawyer; this is what my clients and I have found in practice, not legal advice.
Which time model works with a full-time job?
Pick a model first. The people who fail at this are not the ones with the least time; they're the ones who never decided when the time was.
- The evening plus block. One fixed evening a week (say Tuesday, 19:00 to 22:00) plus one weekend block of four hours. About seven hours a week. Enough for one advisory client or one small consulting project at a time. This is where most people start.
- The compressed day. Negotiate a four-day week or one day a month of unpaid leave. Many tech companies allow it for senior people who ask. One full day is worth more than three evenings, because client work needs uninterrupted thinking.
- The advisory-only model. Two one-hour calls a month per client, async in between. Priced as an access fee, not a day rate. Fits around any job and builds the track record for a fractional role later.
Whichever model, state it to the client as a feature: "You get me Tuesday evenings and one Saturday morning a month, and I answer messages within 24 hours." Clients don't need you always; they need to know when.
What should you sell that doesn't create a conflict?
Sell an outcome you've delivered more than once, to a buyer your employer will never sell to, in a role your employer doesn't have. Three tests: different customer, different category, different role. Pass all three and the non-compete conversation never happens.
A Head of Growth at a B2B sales tool can advise a consumer subscription app on retention. A product lead at a fintech can help a healthtech founder write their first roadmap. What you can't do is offer the same product to the same market, or take your employer's customers with you. The guide on what to sell after a tech career walks through finding the angle.
Should you tell your employer?
Tell them if the contract requires it, if the work could become visible (you'll post about it, speak about it, or a client is in their orbit), or if you'll need schedule changes. Otherwise it's yours to keep private, as long as it stays clean.
When you do tell them, make it boring. One paragraph: what it is, that it doesn't compete, that it happens outside work hours on your own equipment, and that you'll flag anything that might overlap. Send it in writing. In my experience the response is almost always "fine, thanks for letting me know", and the people who react badly were going to be a problem for other reasons.
A senior PM I spoke to this year had fifteen years in tech, a clear niche in PLG conversion, and results with real numbers. What stopped him was "I can't go on LinkedIn, my employer would see it." He was right about the risk and wrong about the conclusion. Visibility is one channel. The waiting itself was the decision.
How do you get the first client without announcing anything?
From someone who has already seen your work. That's the whole method. Make a list of twenty people who've watched you solve the problem you now sell: former colleagues who left for other companies, founders you've helped informally, people who've asked you for advice. Message ten of them, one at a time, with a specific offer: "I'm taking on one client for [outcome], two evenings a week, from November. If you know a founder dealing with [trigger], I'd like an intro." No post, no announcement, no personal brand required.
The trigger matters. Companies buy fractional help after a round closes, after a leader leaves, or after a missed quarter. Ask your ten people who is in one of those moments. One of them will know someone.
Charge from the start. A free pilot with a friend's company teaches you nothing about whether people will pay. Price it 25 to 50% under the band for your role (see fractional executive rates by role) with a case study at the end, and put a three-month minimum on it.
When do you leave?
When the outside income covers your fixed costs for six months, or when a client offers a retainer that needs more days than the job leaves. Not before, and not because you're tired of the job. The people who go fractional well leave from strength: a client list, a price they've tested, and a pipeline of two conversations for every slot they can sell.
Check whether fractional suits how you work
Doing this on the side is the cheapest test there is of whether you want to do it full-time. The free Builder Diagnostic is the other cheap test: 3 minutes, and it shows which business model fits how you work before you commit evenings to it.
Run the Builder DiagnosticQuestions people ask
Is it legal to do consulting while employed full-time?
Usually yes, if your contract allows outside work, the consulting doesn't compete with your employer, and you don't use company time, equipment or information. Check the non-compete, outside-activities and IP clauses, and ask an employment lawyer if any are unclear.
Do I have to tell my employer about side consulting?
Only if your contract requires disclosure or approval, or if the work could become visible or overlap with your job. If neither applies, it's your private business, provided it stays clean.
Can my employer claim ownership of what I build on the side?
Only if it relates to their business or you used their equipment, time or information. Use your own laptop and accounts, work outside hours, and stay out of your employer's product category.
How many hours a week do I need to start fractional work?
About seven: one fixed evening and one weekend block. That supports one advisory client or one small project. One full day a week (negotiated as leave or a four-day week) supports a real fractional role.
Should I use LinkedIn if my employer would see it?
You don't need to. First clients come from people who have already seen your work. Message ten of them with a specific offer. Public content helps later; it is not how the first client arrives.