# Senior C++ Software Engineer > Avacone · London, United Kingdom (Hybrid) · Full-time · Posted 2026-08-15 **Workplace:** hybrid **Department:** UK ## Description ### Position Overview We are looking for an experienced **Senior C++ Software Engineer** to design, develop, and maintain high-performance, reliable, and scalable software solutions. The ideal candidate has strong expertise in modern C++, software architecture, multithreading, performance optimization, and complex software systems. You will work closely with software engineers, architects, product teams, and other technical stakeholders to develop robust solutions and contribute to technical decisions throughout the complete software development lifecycle. This position requires strong hands-on engineering skills, a structured problem-solving mindset, and the ability to work independently in technically demanding environments. ### Key Responsibilities - Design, develop, test, and maintain high-quality software using **modern C++** - Develop robust, scalable, and high-performance software components and applications - Design and implement software architectures, modules, APIs, and interfaces - Write clean, maintainable, efficient, and well-documented code - Analyze existing systems and identify opportunities for optimization and modernization - Troubleshoot complex technical issues and perform root cause analysis - Optimize software for **performance, memory usage, latency, stability, and reliability** - Develop and maintain **multithreaded and concurrent applications** - Participate in architecture and technical design discussions - Conduct code reviews and ensure adherence to software engineering standards and best practices - Develop automated unit, integration, and system tests - Support continuous integration and continuous delivery processes - Collaborate with cross-functional and international development teams - Contribute to technical documentation and software specifications - Support the integration of software components with existing platforms and systems - Mentor less experienced engineers and contribute to knowledge sharing within the team - Evaluate new technologies, libraries, frameworks, and development approaches ## Requirements ### Required Qualifications - Bachelor's or Master's degree in **Computer Science, Software Engineering, Electrical Engineering**, or a comparable technical discipline - **7+ years of professional software development experience** - Strong professional experience with **C++**, ideally **C++17, C++20, and/or C++23** - Excellent understanding of: - Object-oriented programming - Generic programming and templates - STL - Memory management - Smart pointers and RAII - Multithreading and concurrency - Data structures and algorithms - Design patterns - Software architecture principles - Strong experience developing software in **Linux environments** - Experience with debugging, profiling, and performance optimization - Good understanding of network and inter-process communication concepts - Experience with build and dependency management tools such as **CMake, Conan, or vcpkg** - Strong experience with **Git** and modern source-control workflows - Experience with automated testing frameworks such as **Google Test, Google Mock, Catch2**, or comparable technologies - Experience working with **CI/CD pipelines** - Strong analytical and problem-solving capabilities - Ability to analyze and improve complex existing codebases - Strong communication skills and ability to collaborate within international teams - Professional working proficiency in English ### Technical Skills ### Essential - C++17 / C++20 or newer - STL - Multithreading and concurrency - Memory management - Linux - CMake - Git - Unit and integration testing - Debugging and profiling - Software architecture and design patterns - Performance optimization ### Strong Advantage Experience with one or more of the following would be beneficial: - Boost - Python - Bash / Shell scripting - TCP/IP, UDP, REST, gRPC or other communication protocols - Distributed systems - Real-time or low-latency systems - IPC and asynchronous programming - Docker - Kubernetes - Cloud platforms such as AWS, Azure, or GCP - Conan or vcpkg - Jenkins, GitLab CI, GitHub Actions, or similar CI/CD platforms - Static code analysis tools - SonarQube - Valgrind - GDB - Clang tooling and sanitizers ### Software Engineering Expectations The Senior C++ Software Engineer should demonstrate strong knowledge of professional software engineering practices, including: - SOLID principles - Clean Code - Test-driven or test-oriented development - Code review practices - Automated testing - Continuous integration - Secure coding principles - Software lifecycle management - Technical documentation - Performance and reliability engineering ### Seniority Expectations As a Senior Engineer, you are expected to: - Take ownership of technically complex components and solutions - Make sound architectural and implementation decisions - Identify technical risks early and propose appropriate solutions - Work independently while collaborating effectively with the wider engineering team - Challenge technical decisions constructively when required - Improve engineering standards and development practices - Support and mentor other developers - Translate business and technical requirements into reliable software solutions ### Personal Competencies - Strong analytical and structured thinking - High level of ownership and accountability - Quality-oriented engineering mindset - Ability to work independently - Strong troubleshooting capabilities - Excellent attention to detail - Collaborative and solution-oriented approach - Ability to communicate complex technical topics clearly - Comfortable working in international and multidisciplinary environments ### Nice to Have - Experience with embedded or real-time software development - Experience with highly available or mission-critical systems - Experience with high-performance or low-latency applications - Experience modernizing legacy C++ applications - Experience with regulated or highly controlled environments - Experience working in Agile/Scrum development teams - Knowledge of cybersecurity and secure software development practices - Experience mentoring or technically leading engineering teams ## Apply [Apply at Avacone](https://apply.workable.com/avacone/j/C224C105E8/apply) --- Powered by [Workable](https://www.workable.com)