Hiring Is Broken. Interview as a Service Is the Fix.
Every TA leader has faced it — great candidates stuck in limbo because your internal panel is maxed out. Delays in feedback. Interviews rescheduled. Team leads burning out. And worse? Losing top candidates to faster-moving competitors.
Interview as a Service (IaaS) is the answer.
In this guide, we’ll break down:
- What Interview as a Service really means
- Who it’s for (hint: probably you)
- How it works
- Why it’s the go-to model for smart hiring teams in 2025
So… What Is Interview as a Service?
Interview as a Service is a hiring model where expert interviewers assess your candidates on your behalf. These interviewers are external, trained, and domain-specific — and they follow structured evaluation rubrics to ensure fairness, accuracy, and consistency.
Instead of relying on your internal team to manage 5–10 interviews per role, you plug into a remote interview panel that’s scalable, reliable, and built for speed.
At InterviewDesk, for example:
- We’ve conducted 50,000+ interviews
- Across 450+ skills
- With 2,000+ trained interviewers
- Delivering 90%+ candidate satisfaction
Why Is Interview as a Service Becoming So Popular?
The shift is driven by real pain points HR leaders face every day.
1. Internal Teams Are Stretched
Engineers, managers, and product leaders are swamped. They can’t run 10 interviews a week and still ship on time.
2. Interviews Get Inconsistent
Different interviewers = different questions = different judgments. Structured panels remove that guesswork.
3. Delays Hurt Hiring Velocity
Every delay increases the risk of candidate drop-offs. Top talent won’t wait for your panel to be available.
4. Hiring Needs to Scale — Fast
When you’re hiring 20, 50, or 200+ roles, the internal model collapses. Interview as a Service gives you bandwidth on demand.
How Does It Work? (Step-by-Step)
The beauty of Interview as a Service is in its simplicity.
Here’s how it works with InterviewDesk:
- Share Your Role Details
- Job description, skill requirements, experience level
- We Assign a Domain Expert Interviewer
- Matched based on skill + seniority + industry
- Interviews Are Scheduled
- Candidates get flexible slots with calendar sync
- Structured Interviews Are Conducted
- Using rubrics, live coding, proctoring, and Q&A
- You Get a Detailed Feedback Report
- With ratings, notes, video summaries (if needed), and hire/no-hire decision
And all of this? Typically completed within 24–48 hours.
Who Should Use Interview as a Service?
It’s a misconception that this model is only for big tech companies.
In reality, Interview as a Service works best when:
- You’re hiring at scale (10+ roles/month)
- Your internal panel is overloaded
- You want to reduce bias and improve candidate experience
- You want to shorten your time-to-hire
- You’re hiring remotely across time zones
Ideal for:
- Startups scaling fast without large TA teams
- Enterprises standardizing hiring across business units
- Recruitment firms that need credible pre-screening
- Campus hiring drives with high volume and tight deadlines
What Makes It Different from Internal Panels?
| Criteria | Interview as a Service | Internal Interview Panel |
| Interviewer availability | On-demand, 24/7 | Limited to work hours |
| Bias and consistency | Structured & standardized | Varies by interviewer |
| Candidate experience | Fast, clear, consistent | Often delayed or inconsistent |
| Scale | Instantly scalable | Hard to scale fast |
| Hiring team effort | Minimal load | Heavy time investment |
Case Snapshot: Scaling 60 Hires in 6 Weeks
A Series C startup needed to close 60 backend engineering roles in 45 days. Their internal team could only cover ~10 interviews/week.
InterviewDesk deployed:
- 30+ expert interviewers
- Custom rubrics for backend, system design, and DevOps
- Full support for scheduling and reporting
Result?
- 92% feedback shared within 24 hours
- 87% of selected candidates cleared final managerial rounds
- Engineering team saved over 1,000 hours
Why It Works: Our Experience
At InterviewDesk, we’ve built the IaaS model from the ground up. Here’s what powers it:
- A network of vetted interviewers from top firms (FAANG, SaaS, mid-market)
- An AI-driven scheduler + interviewer matching system
- Built-in plagiarism detection, code playback, and proctoring
- 450+ role-based rubrics across tech, product, QA, support, and more
We’re not just filling slots. We’re helping you hire right.
Final Thoughts: Hiring Has Changed. So Should Your Interviews.
If you’re still doing interviews the same way you did in 2015, you’re behind.
Interview as a Service is built for speed, scale, and smarter decisions. It’s the model forward-thinking hiring teams are moving to — not because it’s trendy, but because it works.
If your internal panel is slowing you down, maybe it’s time to stop squeezing more from them — and start working smarter.
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