You only get one shot at that interview

Practice it until you nail it. Real rubrics, probing follow-ups, and scored feedback.

5 free credits to start
rcruit.io/interview

System Design Interview

Senior Backend Engineer · 45 min

93%

of people feel interview anxiety*

Only 41%

ever receive interview feedback*

$150+/hr

average cost of a professional mock interview*

*JDP Employment Preparedness Survey; NACE Job Outlook Report; Glassdoor coaching market data

Step 1

An interviewer that goes deep

No generic questions. Rcruit’s interviewer reads your job description, builds a tailored evaluation rubric, and asks probing follow-ups that mirror how real hiring panels assess candidates — on camera, in the same video format most recruiters now use.

Transcript
Step 2

Rubrics built from your actual job description

Rcruit extracts the skills that matter from the role and generates scored criteria with anchor scales — the same framework real interviewers use to calibrate hiring decisions. You’ll see exactly what ‘good’ looks like before you start practicing.

Evaluation Rubric2 of 10 criteria
Distributed Systems Design
Critical
Listen for: service decomposition rationale, consistency model choices, failure handling strategies, experience with message queues/event buses, capacity planning awareness
ScoreLabelDescription
0No EvidenceUnable to discuss distributed systems concepts
1EmergingAware of concepts but limited practical experience
2CompetentCan design basic distributed systems with guidance
3ProficientDesigns systems considering fault tolerance, consistency, and partition handling
4ExpertArchitects complex distributed systems with deep knowledge of tradeoffs (CAP, PACELC)
Technical Communication
Important
Listen for: structured explanations, appropriate depth for audience, use of analogies, clear articulation of tradeoffs
ScoreLabelDescription
0UnclearStruggles to articulate technical decisions
1AdequateExplains concepts but lacks structure
2ClearCommunicates tradeoffs and decisions with logical flow
3ExceptionalAdapts explanation depth to audience; uses diagrams and analogies effectively
Step 3

Feedback that tells you exactly where you stand

Most candidates never learn why they were rejected. Rcruit closes that gap. After each session, get a detailed scorecard with evidence from your actual answers — verbatim quotes mapped to criteria, scored against the rubric, with coaching tips to improve.

Overall Assessment
GoodHigh Confidence
Demonstrated strong systems thinking with practical experience in distributed architectures. Articulated tradeoffs clearly and showed depth in failure handling. Could strengthen responses around capacity planning and cost optimization.
Distributed Systems Design
Critical
Proficient

We mapped the dependency graph — the payment service had the highest fan-out, so we targeted that first.

Shows systematic approach to service decomposition based on coupling analysis

The main tradeoff was eventual consistency versus the latency hit of synchronous calls…

Demonstrates awareness of CAP theorem implications in practice

Simple, credit-based pricing

Structured, evidence-based feedback that used to require an expensive coach. Pay only for what you use.

Starter
Great for trying it out
$10

12 credits

Get Started
Most Popular
Standard
Best value for regular practice
$25

34 credits

10% bonus

Get Started
Pro
For serious interview prep
$50

75 credits

20% bonus

Get Started

Interviews cost 1 credit per 5 minutes. Scenario and rubric generation costs 1 credit each.

Only 2% of applicants land an interview. Make yours count.

You already beat the odds to get in the room. Practice until you're ready to own it.

Get Started Free