Software Engineer – Network & Security Focus

Nasze wymagania: Strong programming skills, with approximately 50% in C/C++ for low-level modules (embedded) and 50% in Python Solid foundation in computer networks: IP, TCP/UDP, routing, NAT, proxy patterns Deep understanding of firewall/security systems: packet filtering, stateful firewalls, URL filtering, IPS/IDS Experience debugging tricky traffic flows (traffic goes forward but reply doesn’t return) Ability to implement or consume proxy, inspection, HTTP/HTTPS parsing Experience with kernel-level or system-level network hooks/modules (Linux netfilter, packet sockets) Good command of English (B2 level or higher) Mile widziane: Experience with firewall vendor software (iptables, nftables, Palo Alto, Fortinet, Cisco ASA) Familiarity with SSL/TLS termination and proxy SSL inspection Knowledge of IDS/IPS systems (Snort, Suricata) Experience in high-performance networking systems Familiarity with container/virtualization networking Exposure to distributed or scalable systems O projekcie: The goal of the project is to develop core network and security features close to the kernel and network stack. About half of the tasks are in C/C++ for low-level modules, and the other half in Python for automation, tooling, and integration. The project involves close collaboration with a team from our client. It is globally distributed, with members in the USA and India - and now, a new team of software engineers is joining in Poland. We work on multiple interesting projects at the time, so we may invite you to the interview for another project if we see that your competencies and profile are well suited for it. Zakres obowiązków: Designing, implementing, and maintaining network/security features (firewall, NAT, proxy, intrusion prevention, filtering) Integrating with kernel or low-level modules (netfilter, packet capture/forwarding logic) Building advanced traffic inspection and filtering logic (URL filtering, protocol analysis, deep packet inspection) Troubleshooting complex network failures (asymmetrical routing, NAT/firewall interactions, dropped reply traffic) Collaborating with architects, QA, and other engineers on secure network systems Reading and applying protocol & security specs (IP, TCP, HTTP, SSL/TLS) Ensuring performance, security, and robustness in production environments Oferujemy: Flexible working hours and approach to work: fully remotely, in the office or hybrid Professional growth supported by internal training sessions and a training budget Solid onboarding with a hands-on approach to give you an easy start A great atmosphere among professionals who are passionate about their work