> Markdown version of [/jobs/ext/1898758-c-c-software-engineer-mid-senior](https://www.wearedevelopers.com/jobs/ext/1898758-c-c-software-engineer-mid-senior). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# C / C++ Software Engineer (Mid & Senior)

- **Company:** IS WIRELESS LLC
- **Location:** United States (Remote available)
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** C++ (Programming Language), CMake, Profiling, Computer Programming, Computer Networks, Data Structures, Software Debugging, Linux, Memory Management, Linux on Embedded Systems, Field-Programmable Gate Array (FPGA), Performance Tuning, Signal Processing, System Programming, System Software, O-RAN, Data Processing, Multithreading, High Performance Computing, 5G NR, Parallel Computation, Git, Perf (Linux)
- **Published:** August 1, 2026
- **Apply:** https://arc.dev/remote-jobs/j/redirect/p8u8eeeqaw

## About the Role

We're hiring Mid and Senior engineers for two complementary roles - both building ultra-resilient 5G/6G network software for military, critical infrastructure, and enterprise clients. IS-Wireless is a Polish deep-tech company and NATO DIANA partner.

If you work in C or C++, one of these is for you.

ROLE 1 - C++ Software Engineer (L1 · PHY Layer)

Develop low-level physical layer (Layer 1) software: signal processing, PHY/MAC, O-RU integration, and performance optimization (3GPP, O-RAN, ETSI).

Must-have:

3+ years C++ (C++14/17/20) in performance-critical systems

DSP fundamentals + 5G NR PHY concepts (OFDM, MIMO, LDPC/Polar)

SIMD vectorization (SSE/AVX/NEON), multithreading, lock-free design

Embedded Linux (x86/ARM), CMake, Git, profiling (gdb/perf/VTune)

Very good English

Nice to have: O-RAN fronthaul (eCPRI), FPGA/GPU/DSP accelerators, DPDK

ROLE 2 - C Developer (L2/L3 · System Software)

Join the L2/L3 team building high-performance data processing engines and system-level components in C99 - computational challenges, not protocol specs.

Must-have:

3+ years professional C (C99) - system programming focus

Algorithms, data structures, computational complexity optimization

Multi-threading, memory management, high-performance computing

Linux systems programming, debugging tools, performance analysis

Very good English

Nice to have: HPC/parallel processing, packet processing, lock-free data structures



## Related Videos

- [Code to Road in < 12 hours](https://www.wearedevelopers.com/videos/1082-code-to-road-in-12-hours)
- [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94)
- [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone)
- [More efficient software for more efficient microchips](https://www.wearedevelopers.com/videos/1164-more-efficient-software-for-more-efficient-microchips)
- [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews)
- [Stop Committing Your Secrets - GIt Hooks To The Rescue!](https://www.wearedevelopers.com/videos/573-stop-committing-your-secrets-git-hooks-to-the-rescue)

## Related Articles

- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)
- [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)
- [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)
- [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs)
- [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers)