N #2690
Applications open
Full-Time Job
Java Developer
Cogentix Systems
About the role
Job Description
Java Developer Job Title
Java Developer Experience
8+
Years Location
Chennai, Bengaluru, Hyderabad Mandatory Skills Java Spring Boot Microservices Architecture
Job Overview
We are looking for an experienced Java Developer with strong expertise in Java, Spring Boot, and Microservices architecture. The ideal candidate should have hands-on experience in developing scalable, robust, and high-performance applications while working in an agile development environment.
Required
Technical Skills
- Strong proficiency in Core Java and OOP concepts.
- Hands-on experience with Spring Boot and Spring Framework.
- Strong understanding of Microservices architecture.
- Experience in developing RESTful APIs and web services.
- Knowledge of SQL and relational databases.
- Understanding of Git and version control.
- Familiarity with Agile/Scrum methodologies.
Preferred Skills
- Knowledge of Hibernate/JPA.
- Experience with Kafka or messaging systems.
- Exposure to cloud platforms such as AWS or Azure.
- Knowledge of Docker and Kubernetes.
- Experience with CI/CD pipelines.
Eligibility & process
Who can apply
Experience: 8-10 Yrs. Open to matching qualifications.
Skills & stack
Selection process
- Online Assessment / Technical Interview Rounds / HR Review
Prep kit
20 resourcesStudy material 4
Aptitude Practice Questions & Mock Tests
Curated logical, quantitative, and verbal reasoning problems for the initial online screening round.
Company-Specific Interview Preparation Corner
Detailed interview experiences, exam formats, and previous test questions for Cogentix Systems and tech roles.
Technical Placement Question Bank
High-yield coding cheat sheets, core CS fundamentals (OOP, DBMS, OS, Networks), and rapid revision guides.
Algorithm, DSA & Live Code Debugger Practice
Hands-on problem sets to improve coding speed and step-by-step memory debugging.
Company-specific guides 4
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.
COMPANY GUIDE
Cogentix Systems Interview Preparation Corner
Comprehensive guide covering typical interview formats, common questions, and preparation tips for Cogentix Systems and off-campus tech roles.
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.
CODING PRACTICE
Algorithm and Data Structure Problem Set
Practice problems to improve coding proficiency and algorithm problem-solving speed for technical rounds.
Likely coding questions 4
Round-wise strategy 4
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 (Boot, Java Development, Springboot Java, Spring Boot, Microservices, Java, SQL, REST APIs) & 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
Cogentix Systems Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
Technical questions 5
What is the difference between WHERE and HAVING clauses in SQL? Answer
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
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
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
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
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.
Behavioural & HR questions 3
Why do you want to join Cogentix Systems as a Java Developer?
Highlight Cogentix Systems's market reputation, recent tech innovations, and how your skills in Boot directly solve their team's objectives.
Highlight Cogentix Systems's market reputation, recent tech innovations, and how your skills in Boot directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
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?
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
7.5-11 Lacs PA
Bengaluru, India
Experience: 8-10 Yrs. Open to matching qu…
