Is the pilot genuinely free for our entire college batch?

Yes, 100%. Selected pilot institutes receive unrestricted access to all 500+ problems, automated code sandbox execution, the AI mock interview suite, and the admin dashboard for the entire semester. No credit card is required.

How does Dev Diary protect student privacy and code submissions?

Student interview recordings and code submissions are stored in isolated encrypted cloud partitions (AES-256). We never train public foundation models on private student recordings or proprietary faculty examination questions.

Can faculty members author their own custom questions and tests?

Yes. The Institute Admin Console provides a complete test authoring studio. Professors can write problem statements in Markdown, provide hidden test cases with specific memory/time thresholds, and schedule timed weekly cohort quizzes.

What programming languages are supported in the compiler runtime?

DevDiary natively supports C++20, Java 21, Python 3.12, JavaScript / TypeScript (Node.js 20), Go 1.22, and Rust. All runtimes execute in sandboxed Linux containers with strict 2-second CPU timeout constraints.

✨ In beta & invite-only — Onboarding select training institutes & colleges for a free pilot

Interview Preparation for Software Engineers: Placement-Ready DSA & Mock Interviews for Students Students

Dev Diary provides structured coding practice, real-time mock interviews with audio/video AI analysis, and batch analytics in an Institute Admin Console — optimized for interview preparation for software engineers. Free during pilot for eligible institutes.

Get Started: Request Free Pilot Access for Interview Preparation Platforms Explore Live Sandbox / Demo

CURRICULUM RIGOR

500+

Curated DSA Problems with pattern maps

TARGETED TRACKS

50+

FAANG & Tier-1 tagged question sets

CAMPUS OUTCOMES

94%

Placement conversion rate in cohort trials

PILOT GRANT

$0 Free

Complete access for verified colleges

lru_cache_implementation.py●

test_runner.cpp

All 18 Test Cases Passed42ms | O(1) ops

PROBLEM 146

LRU Cache (Least Recently Used)

Medium

class Node:

def __init__(self, key, val):

self.key, self.val = key, val

self.prev = self.next = None

class LRUCache:

def __init__(self, capacity: int):

self.cap = capacity

self.cache = {} // map key to node

self.left, self.right = Node(0, 0), Node(0, 0)

self.left.next, self.right.prev = self.right, self.left

def get(self, key: int) -> int:

if key in self.cache:

self.remove(self.cache[key])

self.insert(self.cache[key])

return self.cache[key].val

V8 Sandbox IsolatedMemory: 14.2 MB

AI INTERVIEWER ACTIVE

Time Remaining: 18:24

Interviewer Evaluation (Uber Systems Round)

"Candidate articulated double-linked list with hash map trade-offs clearly. Time complexity is strictly O(1) for both get and put operations."

COHORT READINESS INDEXTop 5% Batch

Data Structures & Complexity96%

Edge Case Handling & Scalability88%

Verbal Technical Communication91%

Telemetry linked to IIT-B Placement Console #CS-2025

END-TO-END PLACEMENT ARCHITECTURE

Comprehensive Interview Preparation for Software EngineersFrom structured DSA practice

AI-powered mock interviews with behavioral and system design focus, to analytics that spotlight candidate readiness, Dev Diary unifies all steps into a single prep powerhouse.

Monaco Engine500+ Challenges

DSA Prep Engine

500+ problems organized rigorously by pattern (Sliding Window, Trees, Graphs, Dynamic Programming). Multi-language IDE with custom test-case authoring and runtime benchmarks.

Explore pattern tracks

Voice + CodeFAANG Rubrics

AI Interview Simulator

Company-tagged behavioral & system design mock interviews with audio recording, real-time transcription, edge-case probing, and instant granular rubric scoring.

Listen to audio mock

Faculty ControlBulk Roster

Institute Admin Console

Bulk student onboarding with single CSV upload, custom test suite authoring, batch cohort isolation, live candidate activity feeds, and one-click grade book exports.

View admin dashboard

Faculty CuratedPDF Export

Knowledge Base & Roadmaps

Shared markdown notes, company-specific cheat sheets, editorial walkthroughs, algorithmic pattern trees, and faculty-approved semester-long study schedules.

Browse syllabi tracks

Predictive AIWeak Spot Alerts

Predictive Progress Analytics

Cohort-wide radar charts pinpointing algorithmic weak spots, problem-solving speed percentiles, streak tracking, and an overall Placement Readiness Index.

Inspect radar metrics

Targeted PrepDeadline Aware

Smart Topic Recommendations

AI-driven personalized next-problem engine calibrated against peer benchmarking, campus visit dates, and specific company hiring rounds (Amazon SDE-1, Microsoft, etc.).

Learn about recommendation ML

INSTITUTIONAL ADVANTAGE

Why Colleges & Academies Choose Dev Diary

Traditional online judges isolate the student. DevDiary bridges the faculty, student, and recruiter in a single high-trust environment.

Free During Pilot Program

Zero budget constraints. We grant your entire placement branch full enterprise access without credit card requirements or surprise licensing lock-ins.

100% SUBSIDIZED PILOT

Faculty Stays in Complete Control

Professors create custom assessments with private test cases, monitor tab-switching and code playback to eliminate plagiarism, and issue digital certificates.

ANTI-PLAGIARISM REPLAY

Rapid Custom Feature Rollouts

Need a specific compiler or specialized university SSO integration? Our dedicated engineering pod prioritizes pilot institute requirements with sub-week rollouts.

DIRECT SLACK & WHATSAPP CHANNELS

INVITATION COHORT — FALL 2025

Get Free Institute Pilot Access

Equip your current placement batch with high-bar DSA problem suites and automated AI behavioral interview simulations before company visits commence.

Unlimited student accounts

Custom branded institute subdomain

Dedicated engineering SLA support

Live faculty onboarding workshop

Request Free Access

Our campus enablement lead will activate your instance within 24 hours.

TRANSPARENCY & PRIVACY