C++ DPDK Backend Developer

Persistent; Pune District; On-site; INR 1,500,000 - 2,100,000; Full time

Benefits offered by this job

Hybrid work

Growth opportunities

Health benefits

Education support

Job summary

Persistent is hiring a C/C++ Senior Software Engineer for Packet Capture & DPDK to design and optimize high-performance capture solutions. You will work on DPDK-based apps, Kubernetes infrastructure, and node provisioning automation for low-latency data processing platforms.

You will collaborate across teams to enhance capture pipelines, troubleshoot bottlenecks, and ensure reliable deployment of packet processing workloads. The role offers architecture input and next-gen analytics opportunities.

Qualifications

• We are seeking a senior engineer with hands-on experience in high-performance packet processing using DPDK.
• Strong C/C++ and Python skills for system-level development and tooling.
• Experience with Kubernetes-based infrastructure and Helm charts is preferred.

Responsibilities

• Design, implement, and optimize DPDK-based packet capture applications and RX/TX pipelines.
• Maintain hardware abstraction layer across DPDK NICs, PCIe capture cards, and ZMQ interfaces.
• Develop node provisioning tooling (Python, Ansible) for DPDK workloads and hugepages setup.
• Own Kubernetes Helm charts for DPDK support infrastructure and CPU pinning extensions.
• Diagnose performance bottlenecks at CPU, NUMA, and kernel levels; tune accordingly.
• Create automated tests and collaborate with downstream teams on metadata contracts.

Skills

DPDK packet processing

C/C++

Python tooling

Kubernetes

Ansible

ZMQ

PCIe/NICs

Performance tuning

Linux internals

Docker/containers

Education

Bachelor's degree in CS/EE or related

Tools

GIT

Jenkins

Job description

About Position:

We are looking for a C/C++Senior Software Engineer - Packet Capture & DPDK to design, develop, and optimize high-performance network packet capture solutions. In this role, you will work on DPDK-based applications, Kubernetes infrastructure, and node provisioning automation to support low-latency, high-throughput data processing platforms. You will collaborate across engineering teams to enhance capture pipelines, troubleshoot system-level performance bottlenecks, and ensure reliable deployment of packet processing workloads. The position offers an opportunity to contribute to platform architecture, automation, and next-generation network analytics solutions.

• Role: C++ DPDK Backend Developer


• Location: All Persistent Location


• Experience: 6 to 14 Years


• Job Type: Full-Time Employment

What You'll Do:

• Design, implement, and optimize the DPDK-based packet capture application: RX thread architecture, memory pool management, RSS configuration, and timestamping.


• Maintain and extend the hardware abstraction layer that supports multiple capture backends: DPDK (Intel/Mellanox NICs), PCIe capture cards, pcap/live, and ZMQ injection.


• Develop and maintain the node provisioning tooling Python-based interactive configuration utilities and Ansible playbooks that prepare worker nodes for DPDK workloads (hugepages, CPU isolation, IOMMU, NIC driver binding, node labelling).


• Own the Kubernetes Helm charts for DPDK support infrastructure: ensure correct node-label-driven PCI address injection, hugepage resource requests, and exclusive CPU allocation via Kubernetes CPU pinning extensions.


• Diagnose and resolve low-level performance issues: CPU cache effects, NUMA topology, TLB pressure, IRQ affinity, kernel jitter on isolated cores.


• Write and maintain automated and manual test procedures for the capture pipeline and node provisioning tooling.


• Collaborate with downstream processing teams on the ZMQ publish interface and packet metadata contract.


• Participate in code reviews, contribute to architecture discussions, and maintain technical documentation.

Expertise You'll Bring:

• Strong experience in developing high-performance packet processing applications using DPDK, with expertise in RX/TX pipelines, memory pool management, RSS configuration, and packet timestamping.


• Deep understanding of networking protocols, packet capture technologies, and low-latency data processing systems.


• Hands-on experience with Intel and Mellanox NICs, PCIe capture cards, packet capture frameworks, and network traffic analysis.


• Proficiency in C/C++ and Python, with the ability to develop and maintain system-level applications, automation tools, and provisioning utilities.


• Experience building and managing Kubernetes-based infrastructure, including Helm charts, resource allocation, CPU pinning, and hugepage configuration.


• Strong knowledge of Linux internals, including NUMA architectures, CPU isolation, IRQ affinity, kernel tuning, memory management, and performance optimization.


• Expertise in infrastructure automation using Ansible and deployment tooling for large-scale distributed environments.


• Familiarity with messaging and streaming technologies such as ZeroMQ (ZMQ) and integration of packet metadata and downstream processing interfaces.


• Proven ability to troubleshoot complex system performance issues involving CPU cache utilization, TLB pressure, network throughput, and application latency.


• Strong collaboration, problem-solving, and communication skills, with experience participating in architecture discussions, code reviews, testing activities, and technical documentation.

Benefits:

• Competitive salary and benefits package


• Culture focused on talent development with quarterly growth opportunities and company-sponsored higher education and certifications


• Opportunity to work with cutting-edge technologies


• Employee engagement initiatives such as project parties, flexible work hours, and Long Service awards


• Annual health check-ups


• Insurance coverage: group term life, personal accident, and Mediclaim hospitalization for self, spouse, two children, and parents

Values-Driven, People-Centric & Inclusive Work Environment:

Persistent is dedicated to fostering diversity and inclusion in the workplace. We invite applications from all qualified individuals, including those with disabilities, and regardless of gender or gender preference. We welcome diverse candidates from all backgrounds.

• We support hybrid work and flexible hours to fit diverse lifestyles.


• Our office is accessibility-friendly, with ergonomic setups and assistive technologies to support employees with physical disabilities.


• If you are a person with disabilities and have specific requirements, please inform us during the application process or at any time during your employment

\"Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.\"