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# Senior Software Engineer (C/C++)

- **Company:** Calnex Solutions
- **Location:** Stevenage, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Amazon Web Services, C++ (Programming Language), Linux, Github, Python (Programming Language), Network Programming, Object-Oriented Software Development, Software Engineering, Software Requirements Analysis, System Software, Multithreading, Real Time Systems, Kubernetes, Information Technology, Terraform, Docker, Jenkins
- **Published:** July 17, 2026
- **Apply:** https://uk.indeed.com/viewjob?jk=6edef9f97fe36d17

## About the Role

* Educated to Degree level in Computer Science, Software Engineering, or equivalent
 * At least 5 years experience in software development
 * At least 2 years experience developing in a Linux environment, using the GNU suite (gcc, gdb)
 * At least 2 years experience mentoring and supporting other software development engineers
 * Strong C++ programming experience and Object-oriented techniques
 * Strong logical and analytical skills
 * Network programming experience
 * Multithreaded programming experience
 * Python programming experience
 * Ability to innovate and think outside the box
 * Able to decompose complex problems into smaller, more manageable units and estimate the timescales involved
 * Demonstrated ability to plan and meet tight deadlines in a dynamic environment
 * Excellent written and verbal communication skills

Desirable Skills:

 * Practical experience designing automated CI/CD pipelines utilizing Jenkins and GitHub Actions
 * DPDK programming experience
 * High-performance / real-time systems programming experience
 * JavaScript experience
 * Proficiency in Docker and container orchestration workflows
 * Familiar with Terraform and AWS cloud services

## Description

Our developers work in multi-discipline and dynamic product development teams that work closely with marketing and sales, turning market and customer requirements into innovative, impactful products., Our R&D team is growing to support our expanding product portfolio. As part of this growth, we have an exciting opportunity for a C/C++ Senior Software Engineer to work on our NE-ONE network emulation product family. This is an ideal opportunity for someone wishing to utilize their experience in highly performant software development. The successful candidate will enjoy working with a small team on the leading edge and be able to innovate and deliver in a fast paced and busy environment., * Designing, implementing, and maintaining complex back end solutions to deliver new products and features with full end to end ownership.

 * Working closely with product owners to understand and refine high level system requirements into deliverables.
 * Contributing to the architecture, implementation and evolution of system software to keep it performant, scalable, flexible and maintainable as requirements evolve
 * Estimating timescales based on an outline of the implementation and then developing and delivering quality software to those timescales
 * Supporting quality-oriented activities necessary to deliver a product that will delight our customers


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