Required Skills & Tech Stack
Embedded C
C++
Embedded Systems
Microcontrollers
Microprocessors
UART
SPI
I2C
CAN
RTOS
Debugging
Software Testing
Automotive Systems
Problem Solving
📚 Free Study Materials (4)
📖
General Aptitude Practice
Open Resource ↗
Helps sharpen logical reasoning and quantitative skills essential for technical interviews.
📖
Interview Preparation Guide
Open Resource ↗
Provides insights into common interview questions and best practices for technical interviews.
📖
Coding Practice Platform
Open Resource ↗
Offers a wide range of coding challenges to improve problem‑solving skills.
📖
Algorithmic Problem Solving
Open Resource ↗
Focuses on data structures and algorithms to prepare for coding rounds.
Eligibility Criteria
Bachelor of Engineering (B.E.) or Bachelor of Technology (B.Tech) in Electronics & Communication, Electrical & Electronics, Electronics & Instrumentation or related discipline. Minimum 6 months to 2 years of relevant experience in embedded systems. Strong analytical and problem‑solving skills. Practical knowledge of embedded software development and automotive domain experience. No backlog policy specified.
Selection & Interview Process
1
Round 1: Technical (Embedded C/C++ & RTOS)
2
Round 2: Technical (System Design & Debugging)
3
Round 3: HR
Job Description & Key Responsibilities
HCLTech, a global leader in digital transformation, is recruiting Embedded C/C++ Engineers for its Chennai and Bangalore offices as part of the 2026 Off Campus Drive. With a focus on automotive embedded systems, the role demands a blend of software craftsmanship and hardware acumen. Candidates will work on firmware development, debugging, testing, and enhancement of embedded applications that power modern vehicles.
**Company Overview**
HCLTech has a rich heritage of delivering end‑to‑end technology solutions across industries. The company’s automotive practice leverages cutting‑edge microcontrollers, communication protocols, and real‑time operating systems to build safety‑critical and high‑performance systems. Employees enjoy a culture of innovation, continuous learning, and global collaboration.
**Role Summary**
The Embedded C/C++ Engineer will design, implement, and maintain firmware for automotive ECUs. Responsibilities include writing clean, efficient code, performing unit and integration tests, and troubleshooting hardware‑software interactions. The engineer will collaborate with cross‑functional teams, participate in technical reviews, and contribute to the product roadmap.
**Key Responsibilities**
1. Design and develop embedded software modules in C/C++.
2. Implement communication interfaces (UART, SPI, I2C, CAN) and ensure protocol compliance.
3. Configure and program microcontrollers/microprocessors, including peripheral initialization.
4. Debug firmware using breakpoints, logs, and hardware analyzers.
5. Write unit tests and perform regression testing for firmware releases.
6. Optimize code for memory footprint and execution speed.
7. Collaborate with hardware engineers to resolve interface issues.
8. Participate in design reviews and provide constructive feedback.
9. Maintain documentation for code, test cases, and design decisions.
10. Stay updated on automotive standards (ISO 26262, AUTOSAR) and industry trends.
**Tech Stack**
- Embedded C/C++
- Microcontrollers (ARM Cortex‑M, PIC, etc.)
- RTOS (FreeRTOS, ThreadX)
- Communication Protocols (UART, SPI, I2C, CAN)
- Debugging Tools (JTAG, SWD, Logic Analyzers)
- Version Control (Git)
- Build Systems (Make, CMake)
**Growth Path**
Starting as a Junior Embedded Engineer, one can progress to Senior Engineer, Lead Engineer, and eventually to Architecture or Project Management roles. HCLTech offers mentorship, certifications, and opportunities to work on high‑impact automotive projects.
**Why Join**
- Competitive compensation and benefits.
- Exposure to cutting‑edge automotive technology.
- Collaborative environment with global teams.
- Continuous learning through training and certifications.
- Clear career progression and impact on real‑world products.
Preparation Hub
HCLTech — QA & Automation Testing 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
🎯
HCLTech Interview Preparation Corner
Comprehensive guide covering typical interview formats, common questions, and preparation tips for HCLTech 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 (Embedded C, C++, Embedded Systems, Microcontrollers, Microprocessors, UART, SPI, I2C, CAN, RTOS, Debugging, Software Testing, Automotive Systems, 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
HCLTech Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
❓ Core Technical Questions & Answers
What is the difference between Implicit Wait, Explicit Wait, and Fluent Wait in Selenium? Answer ▼
Model Answer: Implicit Wait sets a global timeout for all element lookups. Explicit Wait pauses execution until a specific ExpectedCondition (e.g. elementToBeClickable) is met. Fluent Wait allows defining polling frequency and ignoring specific exceptions like NoSuchElementException.
Explain the Page Object Model (POM) and its advantages in Test Automation. Answer ▼
Model Answer: POM is a design pattern that creates an object repository for web UI elements. It separates test scripts from page locators, reducing code duplication and making maintenance easy when UI elements change.
How do you handle dynamic WebElements whose ID changes on page reload? Answer ▼
Model Answer: Use dynamic XPath methods like contains(), starts-with(), text(), or XPath axes (ancestor, following-sibling, parent) instead of brittle absolute paths.
What is the difference between @BeforeMethod and @BeforeClass in TestNG? Answer ▼
Model Answer: @BeforeClass runs once before the first test method in the current class, while @BeforeMethod executes before each individual test method.
How do you validate REST API response codes and JSON payload using Postman / RestAssured? Answer ▼
Model Answer: In RestAssured: given().when().get('/endpoint').then().assertThat().statusCode(200).body('status', equalTo('ACTIVE')).
🤝 Behavioral & HR Questions (STAR Method)
Why do you want to join HCLTech as a Embedded C/C++ Engineer?
Preparation Tip: Highlight HCLTech's market reputation, recent tech innovations, and how your skills in Embedded C 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.
