Every engineering leader faces this decision repeatedly: should we hire full-time, or bring in an augmented resource? The answer depends on five factors that most teams don't evaluate systematically.
The True Cost of a Full-Time Hire
Most hiring managers think about salary. The real number is 1.25–1.4x salary when you include payroll taxes, benefits, equipment, onboarding, and ramp-up. For a $120,000/year senior engineer, the true annual cost is $150,000–$168,000. And that's when the hire works out. The cost of a bad hire: 50–200% of annual salary.
When Full-Time Hiring Wins
- Core product work requiring deep institutional knowledge
- Long-term capability building (3+ year horizon)
- Culture-critical roles: team leads, architects, senior engineers
- Stable, predictable year-round workload
When Staff Augmentation Wins
- Skill gaps for specific projects (e.g., React Native for a 6-month mobile build)
- Scaling for product launches — extra engineers for 3 months to hit a deadline
- Evaluating new technologies before making a platform commitment
- Geographic talent gaps or specialized skills not available locally
- Budget constraints — typically 20–40% less than a fully-loaded full-time hire
The Hybrid Model
The most successful engineering organizations use both: a core team of 5–8 full-time engineers who own product and culture, augmented with specialists who rotate in for specific projects or growth phases. This gives you stability without rigidity.
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