Hiring 3 Engineers Impact on Burn

The True Cost of Each Engineer

When founders say an engineer costs $150k, they often mean base salary. But the actual cash impact is higher. A fully loaded cost includes base salary, benefits (health insurance at $500-1,500/month), payroll taxes (7.65% employer FICA), equipment ($3-5k upfront), software licenses ($200-500/month), and possible recruiting fees (20-25% of first-year salary). A $150k base often becomes $175k-200k in total annual cash cost. For San Francisco or NYC senior talent, $200k-250k fully loaded is more realistic.

Monthly Impact Calculation: Three engineers at $150k fully loaded = $450k/year = $37.5k/month added to burn. This is a fixed, recurring cost from day one. Unlike variable costs that scale with activity, headcount burns steadily regardless of output. Even during the 1-3 month ramp period when productivity is lower, you pay the full rate. Time your hiring against project needs, not just budget capacity.

Runway Impact Calculation

Starting Position: Cash: $1,000,000. Current Burn: $50,000/month. Current Runway: 20 months.

After Hiring 3 Engineers: New Monthly Burn: $50,000 + $37,500 = $87,500. New Runway: $1M / $87.5k = 11.4 months. Runway Reduction: 8.6 months (43% shorter). Notice that adding 75% to burn reduces runway by 43%. This non-linear relationship means small burn increases have outsized runway impacts. Runway = Cash / Burn is inversely proportional. This math argues for aggressive cost control when runway is limited.

Ramp Period Cost: Engineers are not productive on day one. Onboarding takes 1-3 months for full productivity. You start paying immediately but do not see output for a quarter. Your effective cost per output is even higher during ramp. Factor this into timing decisions. Hiring 3 months before a critical project starts means paying $112k before seeing full value.

When Hiring Makes Sense Despite Runway Impact

Revenue-Generating Roles: If an engineer directly enables revenue (features that unlock customers, infrastructure for growth, conversion improvements), the hire may pay for itself. Model explicitly: This engineer enables $X new ARR. Their cost is $Y. Net contribution to burn is $X - $Y. Positive contribution hires are worth the runway impact. The key is being honest about whether the role truly generates incremental revenue or just supports existing operations.

Fundraising Velocity: If you are raising and investors want to see a full team before committing, strategic hires can accelerate the round. The cost is offset by closing faster at better terms. This is a calculated gamble. If the raise fails, you have shorter runway. If it succeeds, the runway concern disappears. Only make this bet if fundraising is highly probable and you have strong investor signals.

Competitive Windows: Sometimes the market moment requires moving fast. If a competitor is launching in 6 months and you need the team to compete, the hire is strategic even if runway-constrained. Be honest about whether this is truly competitive necessity or just desire to move faster. Most competitive threats are not as urgent as founders believe. Evaluate whether being three months slower actually matters for market position.

Technical Debt Crisis: If your codebase has accumulated significant technical debt that slows every new feature and causes outages, hiring engineers to address this may be necessary even at runway cost. Calculate the productivity tax: if current engineers spend 30% of time fighting fires, adding three engineers who reduce that to 10% could increase effective output by more than the cost. This is a complex ROI calculation worth doing before hiring.

Alternatives to Full-Time Hires

Contractors: An hourly contractor costs more per hour but has no benefits overhead and no severance obligation. For a 3-month project, a $150/hour contractor working half-time costs $13k/month versus $12.5k/month for salaried. But you can end the contract without severance or unemployment costs. For short-term needs, contractors preserve runway flexibility. Evaluate total project cost, not just rate comparison.

Offshore/Remote: Engineers in lower-cost markets can cost 40-60% less than US equivalents. Three engineers at $75k fully loaded = $18.75k/month instead of $37.5k. Runway impact is halved. Trade-offs include timezone challenges and communication overhead. But for runway-conscious startups, this is a viable path to extend runway while building product.

Delayed Start Dates: Negotiate start dates 30-60 days out. This gives you productive time on current team while the hire is committed. You extend current-burn runway by the delay period. Candidates often accept delayed starts for the right opportunity, especially with a signing bonus for the wait. Every week of delay is another week at lower burn rate.

Actionable Steps

1. Calculate Fully Loaded Cost: Take base salary. Add 30-40% for benefits, taxes, equipment, and overhead. Use this number for burn calculations. Being surprised by true cost is a common founder mistake. A $140k offer is really $180k+ in cash impact.

2. Model Runway Before Extending Offers: Before making an offer, recalculate runway with the hire included. If runway drops below 12 months, carefully consider whether you should hire now or wait for fundraising clarity. Never be surprised by runway impact after the hire starts. Know the number before you commit.

3. Batch Hiring to Fundraising: If raising in 3-6 months, consider delaying hires until the round closes. You can start recruiting now, move slowly through the process, and extend offers contingent on funding. This maximizes runway during the raise when you need maximum leverage.

4. Set Headcount Triggers: Define specific conditions that must be met before hiring. Example: We will not hire the 3rd engineer until we have 12+ months runway AND product milestone X is complete. These triggers prevent emotional or reactive hiring that damages runway.

5. Pre-Calculate Layoff Scenarios: If you must later cut, know the cost. Three engineers with 2 weeks severance = $18k in wind-down costs. Know this number so you can make clear-eyed decisions about hiring velocity versus future flexibility.

Frequently Asked Questions

Disclaimer: This content is for educational purposes only. Consult with HR and financial advisors for specific decisions.