ServiceNow interview process (2026)

Round-by-round breakdown of the ServiceNow software engineering interview across 4 levels and 19 rounds: interview mode, sample questions, and worked solutions.

ServiceNow salary & ratings · All interview processes

Intern - Associate Software Engineer (ASE) / Software Engineer Intern (India)

Difficulty: Medium · Timeline: ~2-5 days · Recommended prep: 4-8 weeks

  1. Round 0: Online Assessment (Coding OA)

    Assessment · ~90-120 minutes · difficulty 2/5 · elimination round

    Mode of interview: Online assessment

    Sample question: Linked List Cycle II (Detect Loop and Return Start) — Given the head of a linked list, determine whether it contains a cycle. If it does, return the value of the node where the cycle begins; otherwise return -1. Use Floyd's tortoise-and-hare (O(1) extra space). Input gives node count, node values, and the 0-indexed position the tail links back to (-1 for no cycle).

  2. Round 1: Technical Interview 1

    Onsite · ~30-45 minutes · difficulty 2/5 · elimination round

    Mode of interview: Onsite or virtual onsite interview

    Sample question: Reverse Linked List II (Reverse a Sublist) — Given the head of a singly linked list and two 1-indexed positions left and right (left <= right), reverse the nodes from position left to position right and return the resulting list. Input gives node count, node values, then left and right.

  3. Round 2: Technical Interview 2

    Onsite · ~30-90 minutes · difficulty 2/5 · elimination round

    Mode of interview: Onsite or virtual onsite interview

    Sample question: Lowest Common Ancestor of a Binary Tree — Given a binary tree and the values of two nodes p and q, return the value of their lowest common ancestor (the deepest node that has both p and q as descendants, where a node can be a descendant of itself). Input: an integer k, then k level-order tokens (each an integer value or the word 'null'), then the two integers p and q.

  4. Round 3: Hiring Manager / HR Round

    Behavioral · ~35-40 minutes · difficulty 1/5

    Mode of interview: Live behavioral interview

Software Engineer / Associate SWE (SDE-1 to SDE-2, IC1-IC2) — Hyderabad/Bangalore

Difficulty: Medium · Timeline: ~2 weeks · Recommended prep: 3-6 weeks · Cooldown: ~6-12 month

  1. Round 0: Recruiter / HR screening call

    Phone · 20-30 min · difficulty 1/5 · elimination round

    Mode of interview: Remote phone or video interview

  2. Round 1: Online Assessment (HackerRank)

    Assessment · ~90-105 min · difficulty 2/5 · elimination round

    Mode of interview: Online assessment

    Sample question: Group Anagrams — Given an array of strings, group the anagrams together. Two strings are anagrams if one is a rearrangement of the other. Return the groups in any order.

  3. Round 2: Technical Interview 1 (DSA + core CS)

    Onsite · 45 min · difficulty 2/5

    Mode of interview: Onsite or virtual onsite interview

    Sample question: Minimum Add to Make Parentheses Valid — Given a string of '(' and ')', return the minimum number of parentheses (of either kind) you must insert so the resulting string is balanced/valid.

  4. Round 3: Technical Interview 2 (DSA + projects + LLD/schema)

    Onsite · 45 min · difficulty 2/5

    Mode of interview: Onsite or virtual onsite interview

    Sample question: Design a Parking Lot (LLD / OOD) — Design the classes for a parking lot: multiple levels, spot sizes (motorcycle/car/bus), ticketing on entry, fee calculation on exit, and finding/assigning the nearest free spot. Discuss the object model, interfaces, and how to keep it extensible for new vehicle/spot types.

  5. Round 4: Hiring Manager round (behavioral + design)

    Behavioral · 30-45 min · difficulty 2/5

    Mode of interview: Live behavioral interview

  6. Round 5: Decision & Offer

    Offer · ~2 weeks

    Mode of interview: Offer discussion

Senior Software Engineer (IC3) — Hyderabad/Bangalore

Difficulty: Hard · Timeline: ~3 weeks · Recommended prep: 4-8 weeks · Cooldown: Not officially published (LOW confidence).

  1. Round 0: Profile / recruiter screening

    Phone · 20-30 min · difficulty 1/5 · elimination round

    Mode of interview: Remote phone or video interview

  2. Round 1: Technical Interview 1 (DSA)

    Onsite · 45 min · difficulty 3/5

    Mode of interview: Onsite or virtual onsite interview

    Sample question: Trapping Rain Water — Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining.

  3. Round 2: Technical Interview 2 (DSA + system design)

    System_design · 45 min · difficulty 3/5

    Mode of interview: Live system design interview

    Sample question: Design a multi-tenant Incident Management platform (HLD) — Design an incident/ticketing management system serving many enterprise clients on shared infrastructure: data model for tickets/SLAs/assignment, multi-tenant isolation, scaling reads/writes, notifications, and audit logging. Discuss tenant identifiers, row-level isolation vs per-tenant DB, sharding, and reliability.

  4. Round 3: Technical Interview 3 (DSA + project deep dive)

    Onsite · 45 min · difficulty 3/5

    Mode of interview: Onsite or virtual onsite interview

    Sample question: Merge Intervals — Given a collection of intervals [start, end], merge all overlapping intervals and return the non-overlapping intervals that cover all the input.

  5. Round 4: Hiring Manager (behavioral + system design)

    System_design · 45 min · difficulty 3/5

    Mode of interview: Live system design interview

    Sample question: Design the data model / table schema for a ticketing system (DB / LLD) — Design the relational schema for a ServiceNow-style ticketing app: tickets, users, groups, SLAs, comments/work-notes, states and transitions, plus the indexes and queries for 'my open tickets', SLA breach reports, and department top-N resolution times. Justify normalization and multi-tenant columns.

  6. Round 5: Decision & Offer

    Offer · Often same-day to a few days after HM round

    Mode of interview: Offer discussion

Staff Software Engineer (IC4) — Hyderabad/Bangalore

Difficulty: Hard · Timeline: 1-2 months · Recommended prep: Deep system design / HLD and LLD, archit · Cooldown: Not published (LOW confidence).

  1. Round 0: Recruiter / hiring-manager screening

    Phone · ~30 min · difficulty 1/5 · elimination round

    Mode of interview: Remote phone or video interview

  2. Round 1: Technical loop (DSA + system design + LLD)

    Onsite · ~45 min · difficulty 4/5

    Mode of interview: Onsite or virtual onsite interview

    Sample question: Design a scalable workflow automation platform (like ServiceNow) — Design a configurable, multi-tenant workflow-automation platform: users define workflows (triggers, conditions, actions/approvals) via configuration; the engine must execute them reliably at enterprise scale with isolation between tenants, versioning, retries/idempotency, event ingestion, and observability. Discuss the workflow engine, state persistence, queueing, and how non-developers customize behavior safely.

  3. Round 2: Hiring Manager / leadership + offer

    Behavioral · ~45 min · difficulty 3/5

    Mode of interview: Live behavioral interview

Other companies' interview processes

Worked sample solutions (code, design diagrams, and STAR answers) for every round are available in the FAANGPlus app: open interview processes.