L #3104
Applications open
Full-Time Job
Senior Python Developer
ThreatXIntel
About the role
Experience: 18–21 Years
Location: Chennai, Tamil Nadu
Work Mode: 100% Work From Office (Onsite)
Job Type: Full-Time
Joining: Immediate Joiners Only
We are looking for an experienced Senior Python Developer with 18–21 years of overall IT experience and strong hands-on expertise in Python development, backend engineering, application architecture, and scalable enterprise solutions.
The ideal candidate should have extensive experience building high-performance backend applications, developing RESTful APIs, designing microservices, and implementing robust software architectures.
Key Responsibilities
- Design, develop, and maintain scalable backend applications using Python.
- Build and optimize RESTful APIs, microservices, and backend integrations.
- Develop clean, reusable, maintainable, and high-performance code.
- Design database schemas and optimize database queries.
- Work on distributed systems and enterprise application integrations.
- Identify, troubleshoot, and resolve complex production issues.
- Participate in architecture discussions, technical design, and code reviews.
- Implement unit testing, integration testing, and debugging practices.
- Ensure application security, scalability, reliability, and performance.
- Collaborate with cross-functional teams and stakeholders.
Required Technical Skills
- Strong hands-on expertise in Python programming and advanced Python concepts.
- Experience with Django, Flask, and FastAPI.
- Strong knowledge of OOP, SOLID principles, and design patterns.
- Expertise in REST APIs and microservices architecture.
- Strong understanding of data structures and algorithms.
- Experience with asynchronous programming, multithreading, and multiprocessing.
- Hands-on experience with PostgreSQL, MySQL, MongoDB, or similar databases.
- Expertise in database design, query optimization, and ORM frameworks.
- Knowledge of Kafka, RabbitMQ, Redis, or similar messaging technologies.
- Experience with Docker, Kubernetes, and CI/CD pipelines.
- Exposure to AWS, Azure, or GCP.
- Strong experience with PyTest, unit testing, integration testing, and debugging.
- Proficiency in Git, version control, and production issue resolution.
Mandatory Requirements
- 18–21 years of overall IT experience.
- Strong and recent hands-on Python development experience.
- Extensive backend development and application architecture expertise.
- Excellent problem-solving and analytical skills.
- Excellent verbal and written communication skills.
- Immediate joiners only.
- Must be willing to work 100% onsite in Chennai.
Interested candidates can apply directly through LinkedIn.
#Hiring #PythonDeveloper #SeniorPythonDeveloper #PythonJobs #BackendDeveloper #ChennaiJobs #ImmediateJoiners #FullTimeJobs #OnsiteOpportunity
Eligibility & process
Who can apply
Seniority: Associate. Employment type: Full-time
Skills & stack
Selection process
Details are shared by the recruiter after shortlisting.
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 ThreatXIntel 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
ThreatXIntel Interview Preparation Corner
Comprehensive guide covering typical interview formats, common questions, and preparation tips for ThreatXIntel 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 (Python, Django, FastAPI, Flask, REST APIs, Microservices, PostgreSQL, MySQL) & 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
ThreatXIntel 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 ThreatXIntel as a Senior Python Developer?
Highlight ThreatXIntel's market reputation, recent tech innovations, and how your skills in Python directly solve their team's objectives.
Highlight ThreatXIntel's market reputation, recent tech innovations, and how your skills in Python 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.
Competitive Package
Chennai, India
Seniority: Associate. Employment type: Fu…
