Job Title: Graduate Trainee
Company: Calix
Location: Bangalore, India (Hybrid – work from office 20 days per quarter)
Employment Type: Full-time
Job Requisition ID: R-10890
Posted On: Yesterday
About Calix
Calix provides cloud solutions, software platforms, systems, and services that enable communication service providers to simplify operations, enhance subscriber experience, and grow business value.
As a Graduate Trainee, you will collaborate with security engineering and threat intelligence teams to develop, validate, and research network intrusion detection capabilities. Your work will directly contribute to strengthening detection signatures, researching emerging threats, and improving internal threat intelligence processes.
Key Responsibilities
- Collaborate with threat researchers and engineers to analyze network-based attacks and design detection logic.
- Perform packet-level analysis using PCAPs and tools such as Wireshark or Zeek.
- Assist in developing and testing detection signatures for IPS/NIDS systems.
- Contribute to building and automating internal research workflows using Python.
- Conduct open-source intelligence (OSINT) gathering for emerging threats, IoCs, and TTPs.
- Support creation of technical documentation, reports, and playbooks.
- Participate in technical discussions across the threat research lifecycle.
- Assist in building simulated attack scenarios to validate detection capabilities.
Qualifications
- Bachelor’s or Master’s degree (Graduated or Final Year – 2024/2025) in:
- Computer Science
- Information Technology
- Networking
- Cybersecurity
- Strong knowledge of Computer Networking, TCP/IP Protocol Stack, OSI Model, and Intrusion Detection Systems (IDS).
- Familiarity with Cyber Threat Intelligence, MITRE ATT&CK, malware delivery methods.
- Programming knowledge (preferably in Python).
- Comfortable working in both Linux and Windows environments.
- Familiarity with tools such as Wireshark, Suricata, Snort, tcpdump is a plus.
- Coursework or prior experience in Network Security, Packet Analysis, Cybersecurity is desirable.
- Strong communication, research aptitude, and attention to detail.
Work Model
- Hybrid work model.
- Mandatory 20 days per quarter from Bangalore office.
