N #2587
Applications open
Full-Time Job
Bluetooth Low Energy (BLE) Software Engineer
Exiger Technologies
About the role
We are looking for an experienced Bluetooth Low Energy (BLE) Software Engineer with strong expertise in embedded firmware development, Bluetooth Host and Controller Stack, and wireless connectivity solutions. The ideal candidate should have hands-on experience in developing, debugging, and enhancing BLE firmware, troubleshooting complex Bluetooth issues, and working with global engineering teams.
Key Responsibilities
- Develop and enhance Bluetooth Low Energy Host and Controller Stack components.
- Work on GAP, GATT, and BLE Audio profiles.
- Design, develop, and debug embedded firmware using C/C++.
- Troubleshoot complex Bluetooth connectivity and interoperability issues.
- Analyze Bluetooth packets using Frontline and Ellisys protocol analyzers.
- Perform Bluetooth qualification and certification activities.
- Optimize Bluetooth performance, throughput, latency, and power consumption.
- Work with RTOS, embedded SDKs, and debugging tools.
- Ensure compliance with Bluetooth SIG specifications.
- Mandatory Skills 10+ years of embedded firmware development experience.
- Strong programming skills in C/C++.
- Hands-on experience with BLE Host and Controller Stack.
- Strong understanding of Bluetooth Core Specification.
- Experience with GAP, GATT, and BLE profiles.
- Experience with embedded systems and RTOS.
- Bluetooth protocol debugging and packet analysis.
- Good to Have Bluetooth LE Audio.
- Frontline / Ellisys protocol analyzers.
- MFi-iAS / ASHA.
- Zephyr / CMSIS.
- BLE Channel Sounding / AoA / AoD.
- Python scripting.
- Bluetooth PTS certification.
Eligibility & process
Who can apply
Experience: 10-15 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 Exiger Technologies 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
Exiger Technologies Interview Preparation Corner
Comprehensive guide covering typical interview formats, common questions, and preparation tips for Exiger Technologies 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 (Ble, Bluetooth, Embedded Systems, Energy, Gap, Embedded C, Python, Data Structures & Algorithms) & 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
Exiger Technologies Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
Technical questions 5
Explain OOP (Object-Oriented Programming) principles with real-world examples in Ble. Answer
Model answer: 1. Encapsulation (data hiding via private fields/getters). 2. Abstraction (hiding implementation complexity). 3. Inheritance (code reusability). 4. Polymorphism (method overriding/overloading).
What is the time and space complexity of QuickSort vs MergeSort? Answer
Model answer: QuickSort: Average O(N log N) time, O(log N) space. Worst O(N^2). MergeSort: Guaranteed O(N log N) time, but requires O(N) auxiliary space.
Explain the difference between SQL Indexing (B-Tree vs Hash) and when not to use an index. Answer
Model answer: Indexes speed up SELECT queries via B-Trees. However, they slow down INSERT, UPDATE, and DELETE operations because indexes must be updated on disk. Avoid on low-cardinality columns (e.g., boolean flags).
What happens under the hood when you enter a URL in a browser? Answer
Model answer: 1. DNS lookup (resolves IP). 2. TCP 3-way handshake (SYN, SYN-ACK, ACK). 3. TLS negotiation for HTTPS. 4. HTTP GET request sent. 5. Server responds with HTML/CSS/JS. 6. Browser renders DOM & CSSOM tree.
What is the difference between REST and GraphQL APIs? Answer
Model answer: REST uses multiple fixed endpoints with possible over/under-fetching. GraphQL uses a single endpoint allowing clients to query exact fields in a single request.
Behavioural & HR questions 3
Why do you want to join Exiger Technologies as a Bluetooth Low Energy (BLE) Software Engineer?
Highlight Exiger Technologies's market reputation, recent tech innovations, and how your skills in Ble directly solve their team's objectives.
Highlight Exiger Technologies's market reputation, recent tech innovations, and how your skills in Ble 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 (Best in Industry)
Chennai, India
Experience: 10-15 Yrs. Open to matching qβ¦
