Sr. Principal Software Engineer

Fujitsu Careers; Bengaluru; On-site; INR 4,500,000 - 6,500,000; Full time

Job summary

Fujitsu is seeking an individual contributor to develop and deliver layer-3/2 routing protocols for Fujitsu Flashwave /1FINITY products. The role requires hands-on experience with OSPFv2/v3, IS-IS, BGP, LLDP, DHCP, and RSTP, and strong C/C++ skills.

You will collaborate across QA, Documentation, and Customer Support, work on real-time embedded Linux OS, and interact with multiple product groups in various locations.

Qualifications

• 15+ years of hands-on experience in one or more L2/L3 protocols (OSPF, IS-IS, BGP, etc).
• Strong C/C++ programming and data structures; Yang modeling and confd tail-f knowledge.
• Real-time embedded Linux OS experience.
• Experience on networking products and chassis systems with multiple line cards.
• Excellent cross-functional communication across teams and locations.
• Experience with SDKs (Broadcom) and Broadcom drivers.
• Troubleshooting L2/L3 protocols.

Responsibilities

• Analyze requirements, design, develop and deliver high quality software in protocols such as OSPFv2/v3, IS-IS, BGP, LLDP, DHCP, RSTP.
• Interact cross functionally and coordinate across organization lines.
• Write functional and design specification documents and drive sign-off.
• Interface with developers, QA, Documentation & Customer Support teams.
• Participate in full product life cycle development.

Skills

L2/L3 protocols

C/C++ programming

Embedded Linux

Yang modeling

Confd Tail-f

Networking basics

Broadcom SDKs

Troubleshooting L2/L3

Real-time OS

Strong communication

Education

BS/BE/BTECH/ME/MTECH in CS/EE/ECE

Tools

Broadcom drivers

Tail-f confd

Job description

Location Flexibility: Primary Location Only

Posting Start Date: 9/7/26

Fujitsu’s R&D vision is to create cutting-edge technologies that support society and prioritize the flow of data. Our five key technologies are essential elements for collecting data from all parts of society, transporting it over ultra-high-speed and secure networks, analyzing it with trusted AI, converting it into value, and returning it to society. Central to realizing our strategy and vision are the people behind our R&D initiatives. We strive to foster top-notch talent in the innovation process by nurturing skilled individuals equipped to advance this cause with originality and dedication.

The position is for an individual contributor where the candidate needs to develop and deliver layer-3/2 routing protocols/features for Fujitsu Flashwave /1FINITY Products.

Roles and responsibility:

Analyze requirements, design, develop and deliver high quality software inprotocols such as OSPFv2/v3, IS-IS, BGP, LLDP, DHCP, RSTP. Interact cross functionally on matters that require coordination across organization lines. Write functional and design specification documents and drive sign-off. Interface with other developers, QA, Documentation & Customer Support teams as needed. Participate in full product life cycle development.

Qualifications/Job Responsibilities

• Should have 15+ years of Hands-on experience in one or more L2/3 protocols - OSPF, IS-IS, BGP, BFD, VRRP, LLDP, DHCP, RSTP etc.
• Should have understanding and experience in working with general routing architecture, good understanding of networking and L2/3 concepts.
• Strong in C/C++ Programming and Data Structure. Yang modeling and good understanding confd from tail-f is a must. Engineer should have good knowledge real time embedded Linux OS.
• Extensive experience working on networking products required. Candidates with experience on Chassis system with multiple line-cards will be preferred.
• Result oriented with strong sense of drive and closure.
• Ability to work effectively with multiple product groups (QA, platform, hardware, product planningetc.) and a diverse set of people (customer support team etc.)in multiple geographic locations. Should possess strong communication skills.
• Experience in Management / Control plane able to handle all packet forwarding issues on platform
• Experience in SDKs (Broadcom)
• Troubleshoot issues in L2/L3 protocols
• Working knowledge on Broadcom drivers (C programming), chipsets
• Education: BS/BE/BTECH/ME/MTECH in CS/EE/ECE is required.

Ability to anchor the development teams technically and drive the requirement integrity.