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REQUIREMENT_ID_295 β€’ 3-DAY_ACTIVE_POLICY

Customer Experience Engineer L1

Company
Company Hackerrank
Type
Opportunity Type Internship
Salary
Stipend / Salary 6 LPA
Location
Location Bangalore, India
Posted Date
Posted Date Today
REST APIs HTTP status codes SQL Log analysis Debugging Customer communication Python Linux basics Problem‑solving Team collaboration
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Aptitude Practice Questions Open Resource β†—
Helps you sharpen quantitative and logical reasoning needed for the online assessment.
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Technical Interview Preparation Guide Open Resource β†—
Covers common coding, data structures, and system design topics relevant for the technical round.
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Comprehensive Interview Checklist Open Resource β†—
Provides tips on resume building, mock interviews, and HR round expectations.
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Coding Practice Problems Open Resource β†—
Offers a large set of algorithmic problems to improve coding speed and accuracy for the assessment.

B.E./B.Tech/M.Tech/MCA in Computer Science, Information Technology, Electronics, or related engineering discipline; minimum 60% aggregate (or CGPA 6.5/10); graduating batch 2025‑2027; no active backlogs; strong written English communication skills.

1
Round 1: Online Aptitude/Programming Test
2
Round 2: Technical Interview (API, SQL, debugging scenarios)
3
Round 3: Managerial HR Interview (fit, communication, shift flexibility)
HackerRank is a globally recognized platform that empowers developers, enterprises, and educational institutions to assess and improve coding skills. With a mission to make technical hiring more efficient and merit‑based, HackerRank serves Fortune 500 companies, startups, and universities across 150+ countries. The company is known for its data‑driven culture, a strong focus on learning, and a collaborative environment that encourages employees to experiment, iterate, and deliver high‑impact solutions. The Technical Support Engineer (Rotational) role is a key part of the Customer Success organization. As a fresher, you will be part of a 24x7 support team that handles inbound tickets, escalations, and live troubleshooting for clients using HackerRank's suite of products. The role rotates weekly across morning, evening, and weekend shifts, giving you exposure to a variety of customer scenarios and a deep understanding of the platform's internals. You will be the first point of contact for technical queries, helping customers resolve issues related to REST APIs, log analysis, SQL queries, and overall platform performance. Key Responsibilities: 1. Respond to customer tickets within SLA, providing clear, professional, and accurate written communication in English. 2. Diagnose and troubleshoot issues related to REST APIs, HTTP status codes, database queries, and log files. 3. Perform root‑cause analysis for high‑severity (P0) incidents and coordinate with product engineering to drive resolutions. 4. Document common issues and create knowledge‑base articles for internal and external use. 5. Participate in weekly shift rotations covering mornings, evenings, and weekends to ensure 24x7 coverage. 6. Collaborate with cross‑functional teams (Product, Engineering, QA) to reproduce bugs and validate fixes. 7. Use AI‑assisted tools (e.g., code autocomplete, log summarizers) to accelerate debugging and response time. 8. Track ticket metrics and provide insights for process improvement. 9. Attend regular training sessions on new features, APIs, and best‑practice support techniques. 10. Contribute to on‑call rotation and participate in post‑mortem reviews for major incidents. Tech Stack: RESTful APIs, HTTP, JSON, SQL (MySQL/PostgreSQL), Linux command line, basic scripting (Python/Node.js), monitoring tools (Grafana, Kibana), AI assistants (ChatGPT, Copilot). Growth Path: Successful engineers can progress to Senior Support Engineer, then to Technical Account Manager, or move into Product Engineering, QA, or Solutions Architecture roles based on interest and performance. Why Join HackerRank? You will work with cutting‑edge developer tools, gain hands‑on experience with large‑scale SaaS systems, and develop a customer‑centric mindset that is highly valued in the tech industry. The role offers a fast‑track learning environment, mentorship from seasoned engineers, and the chance to make a tangible impact on millions of developers worldwide.

Hackerrank β€” Data Analytics & SQL Interview Guide

Previously asked questions, exam syllabus, coding benchmarks & round strategy.

APTITUDE & LOGIC πŸ“–
Aptitude Practice Questions & Online Mock Tests

Curated logical, quantitative, and verbal reasoning problems to sharpen reasoning skills required for the initial screening test.

Open Resource β†—
COMPANY GUIDE 🎯
Hackerrank Interview Preparation Corner

Comprehensive guide covering typical interview formats, common questions, and preparation tips for Hackerrank and off-campus tech roles.

Open Resource β†—
MOCK TESTS & PAPERS πŸ“
Comprehensive Interview Prep Resources & Syllabus

Collection of previous year questions, company-specific test patterns, and interview experiences for technical and HR rounds.

Open Resource β†—
CODING PRACTICE πŸ’»
Algorithm and Data Structure Problem Set

Practice problems to improve coding proficiency and algorithm problem-solving speed for technical rounds.

Open Resource β†—
Round 1: Online Assessment (OA)
Aptitude, Quantitative Logic & 2 Coding Problems
Focus on accuracy and speed. Practice arrays, strings, and standard arithmetic puzzles.
Round 2: Technical Interview 1
Core Tech Stack (REST APIs, HTTP status codes, SQL, Log analysis, Debugging, Customer communication, Python, Linux basics, Problem‑solving, Team collaboration) & Live Code Tracing
Explain your thought process aloud. Analyze time & space complexities before coding.
Round 3: System Design & Problem Solving
Database Schemas, APIs & Architecture Basics
Clarify edge cases, diagram schemas cleanly, and discuss scalability trade-offs.
Round 4: HR & Cultural Fit Discussion
Hackerrank Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
What is the difference between WHERE and HAVING clauses in SQL? Answer β–Ό
Model Answer: WHERE filters rows before any groupings are applied, while HAVING filters aggregated groups after GROUP BY has executed.
Explain SQL Window functions: ROW_NUMBER(), RANK(), and DENSE_RANK(). Answer β–Ό
Model Answer: ROW_NUMBER() assigns unique sequential integers. RANK() assigns identical ranks to ties and skips ranks. DENSE_RANK() assigns identical ranks to ties without skipping rank numbers.
How do you handle NULL and missing values during data cleaning in Python/Pandas? Answer β–Ό
Model Answer: Use .isna().sum() to identify missing values. Impute with mean/median using .fillna() or remove with .dropna(subset=[...]) depending on variance impact.
What is the difference between Star Schema and Snowflake Schema in Data Warehousing? Answer β–Ό
Model Answer: Star Schema has denormalized dimension tables directly connected to the central Fact table. Snowflake Schema normalizes dimension tables into sub-dimensions to minimize redundancy.
How do you calculate MoM (Month-over-Month) growth in SQL? Answer β–Ό
Model Answer: Use LAG(revenue, 1) OVER (ORDER BY month) to fetch the previous month's revenue and compute (revenue - prev_revenue) / prev_revenue * 100.
Why do you want to join Hackerrank as a Customer Experience Engineer L1?
Preparation Tip: Highlight Hackerrank's market reputation, recent tech innovations, and how your skills in REST APIs directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Preparation Tip: Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
How do you handle strict deadlines or sudden scope changes?
Preparation Tip: Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.

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