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Network Software Engineer

CiklumWrocław, Poland

20 dni temu

Opis pracy

Description

Ciklum is looking for a Network Software Engineer to join our team full-time in Poland.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the role :

As a Network Software Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. We are seeking a highly skilled C / Go Engineer with deep expertise in Linux networking, eBPF, and systems-level programming to join our engineering team. You will work on high- performance networking solutions, help shape observability and tracing pipelines, and contribute to the next-generation mobile core systems. This is a mission-critical role, and we’re looking to start the search immediately, with quick calibration based on early candidate feedback.

Responsibilities

Develop and optimize high-performance network components using C, C++, and Go
Design and implement eBPF / AF_XDP / TC programs and integrate with frameworks like VPP / DPDK
Work with Linux kernel internals, network stack, sockets, routing, and Netfilter
Build and maintain microservices for user-plane functions using Go
Conduct in-depth performance analysis, tuning, and tracing using tools like strace, SystemTap, bpftrace, jemalloc, and gdb
Implement and maintain observability and monitoring tools for networking workloads
Collaborate closely with DevOps and platform engineers on system-level design

Requirements

Strong proficiency in C with hands-on experience in Linux kernel networking, especially eBPF, XDP, TC

C++ experience in multi-threaded user-space environments

Go experience in microservice development for high-throughput systems

In-depth understanding of : Linux networking internals (from NIC RX burst to socket APIs) Memory models, barriers, atomics, thread-local storage, mutexes, spinlocks (both kernel and user-space) Data memory layout, CPU cache locality, RCU, CPU isolation

Deep familiarity with performance tuning and lock-free / wait-free algorithms

Solid understanding of network protocols, UDP tunnels, and low-level packet processing

Desirable

Contributions to open-source projects in the networking or observability space

Experience with RTOS, jemalloc, pahole, or core dump analysis scripting

Past work in telecom, mobile core networks, or cloud-native network functions (CNFs)

What's in it for you

Care : your mental and physical health is our priority. We ensure comprehensive company-paid medical insurance, life insurance and Multisport card

Tailored education path : boost your skills and knowledge with our regular internal events (meetups, conferences, workshops), Udemy license, language courses and company-paid certifications

Growth environment : share your experience and level up your expertise with a community of skilled professionals, locally and globally

Flexibility : Own your schedule – you are the one to decide when to start your working day. Just don’t miss your regular team stand-up

Opportunities : we value our specialists and always find the best options for them. Our Internal Mobility Program helps change a project if needed to help you grow, excel professionally and fulfill your potential

Global impact : work on large-scale projects that redefine industries with international and fast-growing clients

Welcoming environment : feel empowered with a friendly team, open-door policy, informal atmosphere within the company and regular team-building events

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Software Engineer • Wrocław, Poland