To navigate these complexities, use a structured framework that ties each hiring decision to specific business outcomes. Below are key criteria (echoing industry best practices and the blog by Scientific Search):
Timeline and scope of the role:
Ask: Is this an ongoing need or a finite project? If a role is tied to a short-term project or deadline (e.g., clinical trial ramp-up, site validation, regulatory submission), a contract or a defined Statement of Work is usually best. This provides immediate expertise and flexibility. If the need extends beyond 12–18 months or involves continuous operations (e.g., day-to-day QC, continuous process improvement), permanent hiring makes sense to build capability.
Specialised expertise vs. general capability: Determine if the work demands highly specialised skills. Contractors excel in niche tasks (AI-driven analytics, gene therapy assay development) that are sporadic by nature. For example, many companies contract validation experts during plant scale-up. In contrast, if the role is strategic and requires broad company knowledge or leadership, opt for perm. Permanent hires can be developed through training programs and grow into cross-functional team builders.
Knowledge retention needs: Roles requiring deep internal process knowledge or multi-team coordination benefit from permanent staff. Examples: QA Systems Managers, Regulatory Strategy Leads, or heads of Manufacturing. These people build institutional memory and mentor juniors. If the position is mainly executional with limited long-term footprint, a contract might suffice.
Risk tolerance and flexibility: Gauge your organisation’s risk profile. In uncertain periods (tight budgets, shifting pipeline), favour contract arrangements to limit long-term liability. Contracting lets you scale teams quickly and avoid heavy severance if plans change. However, if the business is in execution mode (stable funding, clear strategy), stability is a higher priority, and permanent hires reduce turnover and ramp-time risks. As one consultant notes, contracting surges when “there’s mass investment” but permanent roles stabilize when budgets are predictable.
Blended (Hybrid) models: In most cases, the optimal approach is a mix. For instance, many companies place a permanent manager at the helm (ensuring continuity) and staff the supporting roles with contractors. A practical example: hire a permanent Head of Quality, but use contract Quality Engineers for the first year of a new facility build. This “best of both worlds” model leverages stability and agility. The key is ongoing reassessment: as projects evolve or budgets settle, convert high-impact contractors into employees or bring in contractors for emerging gaps.
Each hiring decision should be explicitly linked to project outcomes and organisational goals. In practice, we recommend documenting a brief “role charter” before posting any job: define the expected deliverables, timeline, and metrics of success. Then apply the above criteria. This forces leaders to articulate whether speed or knowledge retention is the priority, and aligns the choice with long-term strategy rather than routine practice.