Nokia - Senior Technical Specialist - OLT Software Systems

Nokia Networks · Chennai

  • Experience5–15 yrs
  • SalaryNot disclosed
  • Work modeonsite
  • Levelsenior
  • Posted2 Jun 2026
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About Nokia Networks

Nokia Networks is hiring in Chennai in telecom. This role looks for around 5+ years of experience.

Skills

  • C/C++
  • GPON/XGPON
  • OLT
  • Layer 2 networking
  • IGMP
  • PPPoE
  • VLAN
  • 802.1x
  • QoS
  • Java
  • Go
  • Software Development Lifecycle
  • Agile

The role

A software engineer in a telecommunications company develops and optimizes OLT software for fiber access networks, implementing GPON/XGPON and Layer 2 networking features such as VLANs, multicast, and QoS. They troubleshoot telecom software and access-network issues, tune system performance, review code, and integrate device-level networking features. Defining skills include C/C++, GPON/XGPON, and Layer 2 networking, alongside Java, Go, IGMP, PPPoE, 802.1x, SDLC, Agile, CI/CD, and network software testing.

Full job description

Job Description :

As a Senior Technical Specialist, you will play a key role in the development of OLT software systems for fiber-based access networks. You will work closely with cross-functional teams to design, develop, and optimize networking features that support high-performance broadband deployments.

Key Responsibilities :

- Contribute to the design and development of OLT software platforms with focus on scalability, performance, and reliability.

- Work on fiber access technologies, particularly GPON/XGPON systems.

- Develop Layer 2 networking features such as forwarding, multicast, VLANs, and QoS.

- Collaborate with product management and system teams to implement features based on customer requirements.

- Troubleshoot and resolve complex issues in telecom software and access networks.

- Participate in code reviews, design discussions, and system-level integration activities.

- Continuously improve system performance and reliability through debugging and optimization.

- Contribute to agile development practices and continuous innovation.

Required Skills & Experience :

You Have :

- Bachelors or Masters degree in Engineering (Computer Science, Electronics, Telecommunications, or related field).

- 5 to 15 years of experience in telecom broadband access (Fiber/OLT development).

- Strong programming skills in C/C++, Java, or Go.

- Hands on experience with OLT platforms, GPON/XGPON technologies, or device-level networking software.

- Solid understanding of Layer 2 protocols (IGMP, PPPoE, VLAN, 802.1x, QoS).

- Experience in debugging, performance tuning, and system-level problem solving.

- Good understanding of software development lifecycle (SDLC) and agile methodologies.

- Strong analytical and troubleshooting skills.

Good to Have :

- Experience in multicast handling and QoS optimization.

- Exposure to network software testing, automation, or CI/CD pipelines.

- Knowledge of access network performance tuning and large-scale deployments.

- Prior experience in feature ownership or technical mentoring.