Mid/Senior Software Engineer – Network
1 week ago
Do we have a match? As a Software Engineer, you must meet the following criteria: Strong programming skills, with approximately 50% in C/C++ 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) Beyond the criteria above, we would appreciate the nice-to-haves: 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 The project and the team 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. ,[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] Requirements: C, C++, Python, TCP, UDP, Proxy, IPS/IDS, HTTP, Linux, iptables, nftables, SSL, TLS, Virtualization Tools: Agile. Additionally: Sport subscription, Training budget, Private healthcare, Flat structure, Small teams, International projects, Masterclazz training, Free coffee, Bike parking, Playroom, Free beverages, Free lunch, In-house trainings, Modern office, No dress code.
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Remote, Czech Republic CodiLime Full timeDo we have a match As a Senior/Mid AI/ML Engineer, you must meet most of the following criteria: Solid AI/ML expertise: strong understanding of ML concepts and hands-on experience with classic ML and modern LLM architectures Ability to go beyond APIs: experience designing data flows, embeddings, RAG pipelines, fine-tuning, or agent-based systems Strong...
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Software Senior Engineer
1 week ago
Remote, Warszawa, Czech Republic Dell Technologies Full time5+ years of related experience in the following areas: Strong experience with networking protocols (e.g. Ethernet, Infiniband, TCP/IP) Developing new functionalities around networking solutions Hands-on experience in configuring and managing network switches (e.g. VLANs, STP, LACP, port security, QoS) using CLI on platforms such as Dell, SONiC, or similar...
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Senior Software Engineer with Networks
6 days ago
Remote, Warszawa, Czech Republic CodiLime Full timeDo we have a match? As a Network Engineer, you must meet the following criteria: Proven professional and practical experience in software engineering within the networking domain of at least 7 years. Very good knowledge of public clouds: AWS, GCP, Azure, including cloud networking. Proven hands-on experience with network automation (Python/Terraform/Ansible...
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Remote, Warszawa, Czech Republic CodiLime Full timeDo we have a match? As a Software Engineer, you must meet the following criteria: Very good knowledge of Go and C Very good knowledge of Cgo and Bazel Good knowledge of Python In-depth hands-on knowledge of networking Experience in troubleshooting issues across a microservices architecture Experience in designing, analyzing, and troubleshooting large-scale...
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Senior Software Engineer
1 week ago
Remote, Warszawa, Czech Republic Dell Technologies Full timeEssential Requirements Bachelor’s degree in Computer Science or related field 5–8 years of proven experience in complicated system, e.g. critical telecom product, OS (multi-threading, locks, scheduling), storage protocols (NFS, CIFS, iSCSI), storage technologies (SAN, NAS, RAID, OSD, snapshot, replication), networking, device drivers, clustering, etc....
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Senior Software Engineer @ OpenVPN
2 weeks ago
Remote, Czech Republic OpenVPN Full time5+ years of software engineering experience, designing and deploying distributed systems at scale. 3+ years of hands-on experience with Go (Golang), including concurrency, memory management, networking, and performance tuning. Deep understanding of network-level protocols and enforcement (TCP/IP, UDP, DNS, TLS, iptables/nftables, conntrack). Proven...
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Remote, Warszawa, Czech Republic CodiLime Full timeDo we have a match? As a Software Engineer, you must meet most of the following criteria: Proficiency in C/C++ Experience with various build systems, compilers (Make, CMake, Bazel, bitbake) Good understanding and practical experience with static/dynamic code analysis (e.g., Klockwork, CPPcheck, SonarQube) Experience in working with embedded systems and...
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Mid Java Developer @ ConSol* Consulting
4 days ago
Remote, Kraków, Czech Republic ConSol* Consulting & Solutions Software Poland Sp. z o.o. Full timeBachelor's or Master's degree in Computer Science / Information Technology / Engineering About 3+ years of experience in a similar position Knowledge of Java and related technologies at a level which allows the performance of assigned tasks under the supervision of senior developers Fluency in English We are currently looking for 2 Mid Java Developers who...
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Remote, Czech Republic Matrix Global Services Full timeAt least 10 years as network devices SW developer. Experience with developing routers or other network elements. Hands on experience in leading development of complex features and in mentoring junior SW engineers. BSc in Computer Science, Computer Engineering, or equivalent. C, C++ proficiency. Experience with Embedded Linux networking. HW\SW development and...
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Senior Software Engineer Kotlin @ Antal
2 weeks ago
Remote, Warszawa, Czech Republic Antal Full timeAt least a decade of professional experience in back-end development including 3+ years with Kotlin and in a technical leadership role as well Strong proficiency in Kotlin and solid understanding of modern backend architecture (e.g., microservices, REST, event-driven design) Experience with Spring framework (with Kotlin) Deep knowledge of modern...
