That startup offer looks exciting. Fast growth, interesting tech, generous equity. But will the company succeed? And is it the right fit for you?
Don't just trust the pitch. Do your homework. Here's how to evaluate a startup before joining.
Why Due Diligence Matters
**The Stakes:**
You're betting 1-4 years of your careerYour equity might be worth $0 or millionsFailed startups look bad on your resumeCulture fit affects your daily happinessStartups fail 90% of the time. Your job is to find the 10% that succeed—or at least fail fast so you can move on.
The Due Diligence Framework
1. Market and Product
**Is there a real problem worth solving?**
**Questions to ask:**
What problem does the product solve?Who experiences this problem?How do they solve it today?Why is now the right time for this solution?**Red flags:**
Solution looking for a problemTiny addressable market"Everyone is our customer"Ignoring strong incumbents**Green flags:**
Clear, painful problemLarge and growing marketUnique insight or timingEarly traction validates demand2. Traction and Growth
**Is the product working?**
**Metrics to investigate:**
Revenue (and revenue growth)Active users (and user growth)Customer retentionSales pipelineUnit economics**For Pre-Revenue:**
User engagement metricsWaitlist sizeLetters of intentPilot customers**Questions to ask:**
What are your key metrics?How have they trended over the past 6-12 months?What's your customer acquisition cost?What's your churn rate?**Red flags:**
Declining or flat metricsHigh churnVague answers about traction"We're pivoting" (again)**Green flags:**
Strong month-over-month growthLow churnOrganic growth and word-of-mouthClear path to next milestones3. Funding and Runway
**How long can they survive?**
**Questions to ask:**
How much have you raised total?How much runway do you have?When do you plan to raise next?What are the terms of your funding (any unusual liquidation preferences)?**Burn Rate Analysis:**
Monthly burn = Revenue - ExpensesRunway = Cash on hand / Monthly burnSafe runway: 18+ monthsConcerning: <12 months**Red flags:**
Less than 6 months runwayMultiple down roundsDesperate to close next roundUnusual investor terms (heavy preferences)Can't articulate path to profitability**Green flags:**
18+ months runwayPath to profitability or next roundStrong investor supportDisciplined spending4. The Team
**Can this team execute?**
**Leadership Assessment:**
Have the founders done this before?Do they have relevant domain expertise?Do they work well together?Can they recruit and retain talent?**Questions to ask:**
Tell me about the founding team's backgroundHow did the founders meet?What's your experience in this space?What's your employee turnover rate?**Red flags:**
First-time founders with no advisorsCo-founder conflicts or recent departuresHigh employee turnoverToxic glassdoor reviewsLeaders who are defensive or arrogant**Green flags:**
Complementary skill setsRelevant experienceStrong team cultureLow turnoverImpressive early hires5. Investors
**Who's backing them and why?**
**Questions to ask:**
Who are your investors?Why did they invest?How involved are they?Do they have relevant portfolio companies?**Research their investors:**
Check their portfolio and track recordRead their investment thesesLook for relevant domain expertiseUnderstand their reputation**Red flags:**
Unknown or inexperienced investorsInvestors known for poor founder supportNo name-brand investors after Series ADifficult investor terms**Green flags:**
Reputable VCs with track recordInvestors who add value beyond capitalStrong syndicate of investorsInvestors with relevant expertise6. Competition
**Can they win?**
**Questions to ask:**
Who are your main competitors?What's your differentiation?What's your sustainable competitive advantage?How do you win deals against competitors?**Do your own research:**
Google the spaceCheck similar productsRead analyst reportsTalk to potential customers**Red flags:**
Unaware of competitionNo clear differentiationCompeting on price aloneDismissive of competitors**Green flags:**
Clear competitive advantagesUnique insight or technologyDefensible moatWinning deals consistently7. Engineering
**What will you actually work on?**
**Questions to ask:**
What's the tech stack?What's the engineering culture like?What's your approach to technical debt?How do you make technical decisions?What does the team need most?**Assess the codebase (if possible):**
Ask to see code samplesReview their open source contributionsCheck engineering blog postsLook at product quality**Red flags:**
Unmaintainable legacy codeNo automated testingFrequent outagesEngineers unhappy (check Blind)No clear technical vision**Green flags:**
Modern, maintainable tech stackGood engineering practicesTechnical co-founder or strong CTOEngineers excited about the workClear technical roadmap8. Culture and Values
**Will you enjoy working here?**
**Questions to ask:**
What are your company values?How do you live those values?What's your approach to work-life balance?How do you handle disagreements?What does success look like for this role?**Observe during interviews:**
How do people interact?Are interviewers prepared and respectful?Do they ask good questions?Do they listen to your answers?**Red flags:**
Values feel generic or forced"We work hard and play hard"Everyone works crazy hoursHigh-pressure interview tacticsInterviewers seem burnt out**Green flags:**
Authentic, specific valuesSustainable work practicesRespectful interview processPeople seem genuinely happyClear communicationHow to Do the Research
1. Talk to Current Employees
Find people on LinkedIn and reach out:
What do they love about working there?What frustrates them?How has the company changed?Would they join again knowing what they know?Be respectful of their time. Buy them coffee or lunch.
2. Talk to Former Employees
Even more valuable because they can be more honest:
Why did they leave?What did they learn?What would they change?Would they recommend joining?Find them on LinkedIn or Blind.
3. Check Online Resources
**Glassdoor:**
Employee reviewsInterview experiencesSalary data**Blind:**
Anonymous employee discussionsMore honest (sometimes brutally so)Good for compensation data**Levels.fyi:**
Compensation benchmarksCompany-specific data**Crunchbase:**
Funding historyInvestor informationLeadership team**LinkedIn:**
Employee count and growthHiring trendsWho's joining and leaving4. Talk to Customers
If possible, talk to people who use the product:
What do they love?What frustrates them?Would they recommend it?What alternatives did they consider?5. Try the Product
Use the product yourself:
Is it well-built?Does it solve the problem?Would you pay for it?What's the competition like?Red Flags That Should Make You Run
**Immediate disqualifiers:**
Founders won't answer basic questionsLess than 6 months of runwayToxic culture evident in interviewsHigh turnover of senior leadersUnethical business practicesDefensive or dishonest responsesGreen Flags That Are Great Signs
**Strong signals:**
Impressive, mission-driven teamStrong product-market fit signalsClear competitive advantagesWell-capitalized with good investorsSustainable, healthy cultureTransparent and honest communicationMaking the Final Decision
Consider the whole package:
**Risk Assessment:**
What's the probability of success?What happens if it fails?How does this fit your career goals?**Opportunity Assessment:**
What will you learn?Who will you work with?What's the upside if it works?**Personal Fit:**
Do you believe in the mission?Do you like the team?Is the culture aligned with your values?Questions to Ask Yourself
Before accepting:
1. Do I believe in this product and team?
2. Can I afford the risk?
3. What's my backup plan if this fails?
4. Will I learn and grow here?
5. Are the people impressive and kind?
6. Am I excited about the work?
7. Does the compensation make sense?
If you can't answer these confidently, keep investigating or keep looking.
Final Thoughts
Joining a startup is a big bet. Do your homework. Ask hard questions. Trust your instincts.
The best startups are transparent and welcome your diligence. If a company gets defensive about basic questions, that's your answer.
Remember: You're interviewing them as much as they're interviewing you.
Looking for pre-vetted startups with strong fundamentals? Forecareer only partners with startups that pass our due diligence. Let's find you a winner.
