SONiC Expert

CodiLime is a software and network engineering industry expert and the first-choice service partner for top global networking hardware providers software providers and telecoms. We create proofs-of-concept help our clients build new products nurture existing ones and provide services in production environments. Our clients include both tech startups and big players in various industries and geographic locations (US Japan Israel Europe).

While no longer a startup - we have 250 people on board and have been operating since 2011 weve kept our people-oriented culture. Our values are simple:

• Act to deliver.

• Disrupt to grow.

• Team up to win.

This project focuses on designing qualifying hardening and shipping production-grade SONiC platform releases across diverse white-box hardware platforms and ASIC architectures. The technical mandate extends from low-level Linux kernel and platform driver bring-up to deep SWSS feature development Redis state database tuning and SAI/SDK bug isolation.

You will lead a team of systems developers network engineers and test automation specialists operating across extensive multi-vendor testbeds. The team takes end-to-end technical ownership of platform stability driving complex NOS SAI and SDK defect resolutions directly with tier-1 silicon vendors.

What else you should know:

• The team acts as a key technical authority collaborating directly with client architects and silicon vendor engineering groups.

• Delivery follows Agile engineering methodologies taking direct ownership of software architecture system performance and code quality.

• Because our partners and clients operate globally across US Silicon Valley and European time zones flexibility for occasional afternoon coordination calls is expected.

As a SONiC Technical Lead you will be responsible for:

• Leading the end-to-end qualification bring-up and shipping of robust SONiC releases across physical switch targets in complex data center topologies

• Designing extending and debugging core SONiC subsystems including SWSS syncd Redis in-memory state databases and Linux system services.

• Systematically isolating failures across all layers and driving resolution with silicon vendors.

• Debugging transaction processing and pub/sub notification mechanisms between APPLDB ASICDB and syncd to prevent state desynchronization and ensure wire-speed route programming.

• Architecting automated regression workflows (Pytest PTF sonic-mgmt Ansible) integrated into CI/CD pipelines to validate forwarding congestion and L2/L3 resiliency.

• Utilizing packet captures kernel debug tools (gdb perf BPF) diagnostic logs Redis telemetry and line-rate traffic generators (TRex PTF Keysight) to perform root-cause analysis on system-level anomalies.

• Leveraging advanced AI engineering utilities (AI-assisted log analysis LLM coding assistants automated RCA scripts) to accelerate defect isolation and test automation cycles.

• Conducting rigorous code reviews across C/C Python and Go codebases mentoring team members and maintaining high standards for code quality and maintainability.

As a SONiC Technical Lead you must meet the following core criteria:

• Proven track record of shipping qualifying and hardening production-grade SONiC platforms on physical switch hardware.

• Expert-level hands-on experience with SWSS syncd Redis state databases and SAI.

• Demonstrated ability to isolate complex bugs across NOS application software SAI wrapper logic and vendor-proprietary silicon SDKs driving fixes through vendor engineering channels.

• Strong hands-on engineering skills in C/C and Python within Linux environments including multi-threading IPC mechanisms socket programming and system calls.

• Understanding of Layer 2 and Layer 3 networking standards (BGP EVPN VXLAN VLAN QoS RoCEv2 PFC ECN).

• Strong experience with Linux networking internals kernel drivers sysfs dmesg gdb perf tcpdump and systemd service management.

• Hands-on experience with Python-based test frameworks including PTF and pytest.

• Deep familiarity and working knowledge of the sonic-mgmt repository structure and test suite implementation.

• Proficiency with containerization tools and workflows specifically Docker.

• Practical experience with Ansible for configuration management and orchestration.

• Hands-on experience building and integrating automated CI/CD pipelines.

• Good knowledge of English (B2 level minimum) for clear technical communication documentation and vendor technical discussions.

Beyond the criteria above we would appreciate the following nice-to-haves:

• Hands-on software development experience with Golang.

• Direct experience working with hardware acceleration DPDK eBPF or SmartNIC/DPU offloading architectures.

• Hands-on familiarity with proprietary silicon SDKs (e.g. Broadcom SDK/SAI NVIDIA Spectrum SDK Intel Barefoot SDE).

• Experience with commercial network operating systems (Cisco IOS-XE/XR JunOS Arista EOS).

• Practical experience integrating GenAI or LLM-assisted workflows for automated log parsing and system diagnostics.

• Formal professional certifications in networking (CCNA/CCNP/CCIE JNCIP/JNCIE) or software engineering is a plus.

• Flexible working hours and approach to work: fully remotely in the office (Warsaw) or hybrid.

• Professional growth supported by internal training sessions (Tech Talks) and a training budget.

• Solid onboarding with a hands-on approach to give you an easy start.

• A great atmosphere among professionals who specialize in low-level engineering networking and cloud automation.

• The ability to change the project you are working on within CodiLimes multi-client portfolio.