Required Skills & Tech Stack
Mean
Scalability
Palantir
HTML
ELT
Machine Learning
Data Science
Analytical
📚 Free Study Materials (4)
📖
Aptitude Practice Questions & Mock Tests
Open Resource ↗
Curated logical, quantitative, and verbal reasoning problems for the initial online screening round.
🎯
Company-Specific Interview Preparation Corner
Open Resource ↗
Detailed interview experiences, exam formats, and previous test questions for Epam Systems and tech roles.
📝
Technical Placement Cheat Sheets & Question Bank
Open Resource ↗
High-yield coding cheat sheets, core CS fundamentals (OOP, DBMS, OS, Networks), and rapid revision guides.
💻
Algorithm, DSA & Live Code Debugger Practice
Open Resource ↗
Hands-on problem sets to improve coding speed and step-by-step memory debugging.
Eligibility Criteria
Experience: 8-12 Yrs. Open to matching qualifications.
Selection & Interview Process
1
Online Assessment / Technical Interview Rounds / HR Review
Job Description & Key Responsibilities
We are seeking a skilled Senior Palantir Data Software Engineer to join our team and contribute to a complex Data Transformation project within the Insurance domain. In this role, you will have the opportunity to design and implement advanced data pipelines and analytics solutions, leveraging cutting-edge Big Data and Machine Learning technologies to solve emerging challenges and support critical business decision-making. Responsibilities Design and implement robust data pipelines using Palantir Foundry to enable data-driven decision-making Optimize and maintain ETL processes utilizing Python, PySpark, and SQL to transform large-scale datasets efficiently Apply data warehousing concepts and ELT techniques to develop scalable data solutions Collaborate with cross-functional teams in a Scrum/Agile environment to deliver high-quality solutions Perform data analysis and debugging to identify and resolve issues in complex data pipelines Bridge technical and business knowledge to ensure alignment of data solutions with Insurance domain objectives Document processes, workflows, and functionality to ensure transparency and ease of future updates Stay updated on industry trends and emerging technologies for potential adoption Participate in global, culturally diverse team interactions with effective communication Requirements Bachelor's degree or equivalent in Computer Science, Data Science, or a related field At least 5 years of experience with a focus on large-scale distributed computing systems Hands-on development experience with Palantir Foundry Proficiency in Python, PySpark, and SQL (Spark SQL preferred) for developing and optimizing complex data pipelines Extensive knowledge of data warehousing concepts and ELT techniques, and understanding of Insurance domain is highly desirable Experience with Scrum and Agile methodologies for project delivery Showcase of strong analytical thinking and the ability to address intricate challenges Self-motivated with good time management skills, capable of owning tasks from inception to delivery Strong interpersonal and verbal/written communication skills, including clarity in complex contexts Upper-Intermediate (B2) or higher proficiency in English Nice to have Background in the Insurance domain, Financial Industry, or finance-related functions in other industries Familiarity with front-end technologies like HTML, CSS, JavaScript, and build tools like Gradle
Preparation Hub
Epam Systems — AI & Machine Learning Interview Guide
Previously asked questions, exam syllabus, coding benchmarks & round strategy.
📖 Previously Asked Questions & Preparation Links
APTITUDE & LOGIC
📖
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 ↗
COMPANY GUIDE
🎯
Epam Systems Interview Preparation Corner
Comprehensive guide covering typical interview formats, common questions, and preparation tips for Epam Systems and off-campus tech roles.
Open Resource ↗
MOCK TESTS & PAPERS
📝
Comprehensive Interview Prep Resources & Syllabus
Collection of previous year questions, company-specific test patterns, and interview experiences for technical and HR rounds.
Open Resource ↗
CODING PRACTICE
💻
Algorithm and Data Structure Problem Set
Practice problems to improve coding proficiency and algorithm problem-solving speed for technical rounds.
Open Resource ↗
💻 Previously Asked Coding Challenges
Easy / Medium
⚡ Live Debugger
Two Sum & Two Pointers Array Optimization
Asked in 85% tech rounds
Medium
⚡ Live Debugger
Reverse Linked List & Detect Cycle (Floyd's Algorithm)
Frequently asked in core rounds
Medium
⚡ Live Debugger
SQL Nth Highest Salary with DENSE_RANK() & Subqueries
Top standard database question
Easy / Medium
⚡ Live Debugger
Valid Parentheses & Stack Implementation
Standard online assessment problem
🗺️ Round-Wise Strategy
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 (Mean, Scalability, Palantir, HTML, ELT, Machine Learning, Data Science, Analytical) & 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
Epam Systems Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
❓ Core Technical Questions & Answers
What is the bias-variance tradeoff and how do you prevent overfitting? Answer ▼
Model Answer: High bias leads to underfitting (oversimplified model), high variance leads to overfitting (captures noise). Mitigate using L1/L2 Regularization, Dropout, Cross-Validation, and data augmentation.
Explain the difference between Precision, Recall, and F1-Score. Answer ▼
Model Answer: Precision = TP / (TP + FP) (correctness of positive predictions). Recall = TP / (TP + FN) (coverage of actual positives). F1-Score is the harmonic mean of Precision and Recall.
How does Gradient Descent work and what is the role of Learning Rate? Answer ▼
Model Answer: It optimizes loss functions by iteratively moving weights in the direction of negative gradient. A large learning rate may overshoot the minimum; a small rate causes slow convergence.
What is the difference between Supervised, Unsupervised, and Self-Supervised learning? Answer ▼
Model Answer: Supervised uses labeled data (X -> y). Unsupervised finds hidden patterns in unlabeled data (clustering/PCA). Self-supervised generates labels from input data (e.g. masked language modeling in BERT/Transformers).
🤝 Behavioral & HR Questions (STAR Method)
Why do you want to join Epam Systems as a Lead Palantir Data Software Engineer?
Preparation Tip: Highlight Epam Systems's market reputation, recent tech innovations, and how your skills in Mean 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.
