KASHII UPDATEZ Everyday Student Requirements & Python Coding Tutorials by Python Kashi
REQUIREMENT_ID_1833 • 3-DAY_ACTIVE_POLICY JD

MERN Stack Developer

Company
Company Perfectiongeeks
Type
Opportunity Type Full-Time Job
Salary
Stipend / Salary ₹6–8 LPA
Location
Location India (Remote / Multiple), India
Posted Date
Posted Date Today
Apply on Official Website ↗
MongoDB Express.js React.js Node.js JavaScript JWT REST APIs Git HTML CSS problem solving
📖
Aptitude Practice Questions Open Resource ↗
Helps you sharpen quantitative and logical reasoning skills essential for the initial screening test at PerfectionGeeks.
📖
Company Interview Preparation Guide Open Resource ↗
Provides insights into typical interview patterns and sample questions asked by Indian tech firms, useful for the technical round.
📖
Programming Interview Prep Open Resource ↗
Covers core data‑structures and algorithms topics that are frequently tested in coding assessments for MERN roles.
📖
Data Structures & Algorithms Problems Open Resource ↗
Offers a large set of practice problems to improve problem‑solving speed and accuracy for the online test.

Graduates (B.Tech/B.E., B.Sc., MCA) from any engineering or computer science stream; minimum 60% aggregate (or CGPA 6.5/10); batch years 2025‑2027; no active backlogs at the time of joining; strong foundation in JavaScript and web development concepts.

1
Round 1: Online coding test
2
Round 2: Technical interview (focus on MERN stack, data structures, system design)
3
Round 3: HR interview
PerfectionGeeks Technologies is a fast‑growing Indian software development firm that specializes in delivering end‑to‑end digital solutions for startups and mid‑size enterprises. Founded by a group of technology enthusiasts, the company has built a reputation for creating scalable web applications using modern JavaScript frameworks. With a collaborative culture, PerfectionGeeks encourages continuous learning, mentorship, and hands‑on exposure to real client projects, making it an attractive destination for fresh engineering talent. The MERN Stack Developer role is designed for recent graduates or engineers with up to three years of experience who are eager to work on full‑stack web applications. As a member of the development team, you will be responsible for turning product requirements into functional, high‑performance features that run seamlessly on both the client and server sides. You will work closely with senior developers, product managers, and UI/UX designers to deliver clean, maintainable code that meets business goals. **Key Responsibilities** 1. Design, develop, and deploy end‑to‑end features using MongoDB, Express.js, React.js, and Node.js. 2. Write reusable, modular front‑end components and back‑end APIs. 3. Implement authentication mechanisms such as JWT and manage secure data flows. 4. Optimize application performance, conduct code profiling, and resolve bugs promptly. 5. Participate in code reviews, provide constructive feedback, and adhere to coding standards. 6. Collaborate with cross‑functional teams to gather requirements and translate them into technical specifications. 7. Maintain version control using Git, manage branches, and ensure smooth CI/CD pipelines. 8. Contribute to documentation, unit testing, and automated testing strategies. 9. Stay updated with the latest trends in the MERN ecosystem and suggest improvements. 10. Assist in deploying applications to cloud platforms and monitoring production health. **Technical Stack**: MongoDB, Express.js, React.js, Node.js, JavaScript (ES6+), JWT, RESTful APIs, Git, Docker (optional), CI/CD tools. **Growth Path**: Starting as a junior MERN developer, you can progress to senior developer, lead engineer, and eventually architect or project lead, depending on performance and skill acquisition. The company offers regular training sessions, hackathons, and opportunities to work on diverse client domains, which accelerates professional growth. **Why Join PerfectionGeeks?** The firm provides a vibrant environment where fresh talent is trusted with real responsibilities early on. Competitive salary (₹6–8 LPA), flexible work arrangements, and a clear career roadmap make it an ideal launchpad for aspiring full‑stack engineers. Moreover, the emphasis on mentorship and knowledge sharing ensures that you continuously sharpen your technical abilities while contributing to impactful projects.

Perfectiongeeks — AI & Machine Learning Interview Guide

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

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 🎯
Perfectiongeeks Interview Preparation Corner

Comprehensive guide covering typical interview formats, common questions, and preparation tips for Perfectiongeeks 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 ↗
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 (MongoDB, Express.js, React.js, Node.js, JavaScript, JWT, REST APIs, Git, HTML, CSS, problem solving) & 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
Perfectiongeeks Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
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).
Why do you want to join Perfectiongeeks as a MERN Stack Developer?
Preparation Tip: Highlight Perfectiongeeks's market reputation, recent tech innovations, and how your skills in MongoDB 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.

More Fresh Requirements in Software Engineering

View Category Feed ↗
Perfectiongeeks
MERN Stack Developer
Apply ↗
Chat Chat with Kashii