C++ Software Developer

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🕒 March 24

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IS-Wireless

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2017

🎖️ Defense

🏭 Manufacturing

💼 Consulting

Defense • Manufacturing • Consulting

IS-Wireless is a top European deep-tech innovator developing ultra-resilient, secure, and resource-efficient 5G/6G radio access solutions for industrial and tactical use. The company, founded in 2017 and recognized with the EIC Seal of Excellence and NATO DIANA 2025 innovation status, holds 10+ patents for its Liquid RAN technology — an open, disaggregated approach enabling rapid restoration and redeployment of base stations in volatile or degraded environments. IS-Wireless operates as a dual-use firm bridging defense and commercial applications, and brings together hardware and software expertise from telecom vendors, operators, and R&D institutions.

📋 Description

• Design, implement, and optimize 5G NR Layer 1 (PHY) components in modern C++ for low-latency, high-throughput processing. • Build and tune signal-processing blocks (OFDM modulation/demodulation, channel estimation, equalization, synchronization, MIMO/beamforming, HARQ, LDPC/Polar). • Apply multithreading, lock-free techniques, fixed-point arithmetic, and SIMD (SSE/AVX/NEON) vectorization to meet real-time KPIs. • Integrate close to hardware on embedded Linux (x86/ARM), optimize memory/I/O paths, and ensure cache-efficient data layouts. • Profile and debug performance (gdb, perf, valgrind, VTune), identify bottlenecks, and drive continuous improvements. • Define clean interfaces between L1 and upper layers (L2/L3) and O-RU; collaborate with system architects, protocol engineers, and QA teams to deliver carrier-grade features. • Write unit/integration tests (GoogleTest), support hardware-in-the-loop testing, and contribute to CI/CD and documentation. • Participate in code reviews and uphold high engineering standards.

🎯 Requirements

• 3+ years of hands-on modern C++ (C++14/17/20) in performance-critical systems; strong multithreading and memory-management skills. • Solid understanding of DSP fundamentals and 5G NR PHY concepts (OFDM, MIMO, synchronization, channel coding LDPC/Polar). • Proven experience with SIMD vectorization and cache-aware, low-latency design. • Proficiency in Linux development (toolchain, CMake, Git) and debugging/profiling tools. • Experience with embedded/real-time systems and working close to hardware. • Ability to read and apply 3GPP specifications. • Very good English (spoken/written).

🏖️ Benefits

• Competitive salary package that grows with your experience and impact • Access to world-class telecommunications knowledge base and comprehensive training resources • Time for training, conferences, and self-development with ample opportunities for personal growth • Opportunities for growth and advancement based on merit • Ownership of cutting-edge, patent-worthy technology that shapes global connectivity • Exposure to the latest technology and tools that push the boundaries of innovation • Diverse, friendly, and talented international team of engineers and domain experts • Collaborative, low-ego environment that rewards initiative and values your input • Flexible working hours that promote healthy work-life balance • Regular integration events that foster team bonding and camaraderie