Back to all roles

Engineering

/

Senior leadership

Principal Security Engineer

Application & Platform Security

Lead Full-Time On-site — Kolkata, West Bengal, India Permanent

Compensation

INR 45 - 75 LPA

Engagement

Full-Time

Permanent role. Full-time commitment. This is an on-site role at Kolkata. It is not remote and not hybrid.

Scope of role

Set direction within your domain. Build and mentor a team. Own outcomes at the function level.

01 — The role

Why this role exists at EduRankAI

Own EduRankAI's security posture: application security, infra security, data privacy (DPDPA 2023 + GDPR). You will lead a small security team and you will be the engineer accountable when something goes wrong. This role exists because AI companies face a more interesting threat surface than most: prompt injection, training-data exfil, model jailbreaks, plus the usual application security. You will own the whole picture, and you will write enough code to defend the design choices you make.

02 — The work

What you will own

  • 01 Own the threat model and the security architecture document.
  • 02 Lead incident response — commander, on the page, in the postmortem.
  • 03 Run the secure-SDLC programme (code review, scanning, audits, training).
  • 04 Own GDPR + DPDPA 2023 technical compliance — the actual controls, not the policy PDFs.
  • 05 Run the bug bounty and responsible disclosure programme.
  • 06 Commission quarterly third-party penetration tests; own the remediation.

03 — The expertise

What we look for

10+ years application + platform securityCloud security (AWS / GCP / Vercel)Cryptography fundamentalsSecure-SDLC programme experienceFamiliarity with LLM-specific threats (prompt injection, jailbreaks, data exfil)Strong written communicator

04 — The bar

Who thrives here

  • You have led security for an org of at least 50 engineers for 2+ years.
  • You have personally led the response to a Sev-1 security incident and written the postmortem.
  • You can describe two security controls you killed because they were theatre, and what you replaced them with.
  • You can read application code and find a real bug in it.
  • You have written or significantly contributed to a security policy that engineers actually read.

Terms of Engagement

How working time works at this level

No counted hours. A five-day week with a four-hour overlap window, plus responsibility for the coverage of your area — including who is on call and when.

Type

Lead

Working days

5 per week

Rest days

2 per week

Hours counted

No

Daily overlap

4h

Measured by

The outcomes of the area you lead, the reliability of its coverage, and the growth of the people in it.

Where this stands legally

Hours are not counted at this level. The statutory ceiling of 9 hours a day and 48 a week remains the limit the role is designed to fit inside: if the work cannot be done within a normal week, the scope is wrong, not the person.

The full per-level model is published at Working Hours by Level.

05 — Hiring process

What to expect after you apply

  1. 01

    Application review

    Every application is read personally within five business days. We respond either way.

  2. 02

    Take-home or live exercise

    Role-specific. Time-boxed. Real problems we are actually working on, not invented puzzles.

  3. 03

    Conversations

    Deep technical and values conversations with the team you would join. No trick questions. No panel ambushes.

  4. 04

    Offer or honest no

    If yes: digital offer letter, signed in-portal, transparent terms. If no: written feedback if you want it.

Before you start

What we will collect. What it costs. What we will not do with it.

We will collect

  • Name, email, phone — Account + application updates. No marketing.
  • Resume / portfolio link — Human review of your work.
  • Date + place of birth — Identity verification only.
  • Your written responses — Selection rubric. Read by humans.
  • Government ID (later) — Anti-fraud at offer / interview stage. Not at signup.

We will never

  • Sell your data
  • Share with third-party recruiters
  • Use for advertising
  • Train models on it
  • Send marketing email

Our situation

EduRankAI is a small, independent organization building long-term capabilities in educational intelligence, advanced AI systems, and research infrastructure. We take no advertiser money, no donations with strings attached, and no investor pressure on hiring decisions. Applying is free, and every application is read by a human — recruitment, technical, academic and leadership teams. It buys us the right to be honest.

Full transparency policy Questions? Email us

Ready to apply?

We read every application personally. If you are the right person for this role — regardless of pedigree, background, or where you are based — you will hear back from us within five business days.

Lead Full-Time

Principal Security Engineer

Apply →