C++ Engineer (Senior) ID41762
AgileEngine.com
Office
Barcelona, Spain
Full Time
AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.
WHY JOIN US
If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!
ABOUT THE ROLE
As a Senior C++ Engineer, you’ll help shape and extend a high-performance telecommunications platform, directly impacting its core features and APIs. Working in a small, skilled team within an Agile environment, you’ll tackle challenging technical problems, optimize performance, and collaborate across functions. This role offers ownership, professional growth, and the chance to make meaningful contributions to a product with real-world impact.
WHAT YOU WILL DO
- Maintain, improve, and extend an existing multi-platform codebase written in C++/Qt/QML with customized external C libraries;
- Read and interpret specifications, APIs, and technical documentation to design and implement integrations effectively;
- Troubleshoot issues and propose efficient solutions with minimal oversight;
- Contribute to API design and discussions (e.g., device management, CRM management) in collaboration with architects and stakeholders;
- Ensure code is developed and delivered within a CI/CD pipeline environment;
- Work in an Agile environment, actively participating in planning, reviews, and retrospectives;
- Navigate and work effectively with UI/UX components (basic UI adjustments and integrations with design).
MUST HAVES
- 5+ years of experience with C++ (incl. STL, memory management, multithreading);
- Experience with Qt 5/6 and QML;
- Comfortable working on Windows;
- Networking: strong with TCP/UDP, IPv6, and common protocols;
- Experience with CMake, Git, and CI/CD workflows;
- Hands-on experience with unit testing (GTest, GMock);
- Ability to read and implement against API specs with minimal supervision;
- Clear communicator who can speak up in product/API design discussions;
- Availability to overlap 3–4 hours daily with the EST time zone;
- Upper-Intermediate English level.
NICE TO HAVES
- MacOS/Linux familiarity is a plus;
- Experience with SIP protocol, audio processing, or TLS;
- Python scripting for internal tools;
- Comfortable building/debugging on macOS;
- Prior experience working in product companies or startup environments.
PERKS AND BENEFITS
- Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps.
- Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities.
- A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands.
- Flextime: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive.
WHY JOIN US
If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!
ABOUT THE ROLE
As a Senior C++ Engineer, you’ll help shape and extend a high-performance telecommunications platform, directly impacting its core features and APIs. Working in a small, skilled team within an Agile environment, you’ll tackle challenging technical problems, optimize performance, and collaborate across functions. This role offers ownership, professional growth, and the chance to make meaningful contributions to a product with real-world impact.
WHAT YOU WILL DO
- Maintain, improve, and extend an existing multi-platform codebase written in C++/Qt/QML with customized external C libraries;
- Read and interpret specifications, APIs, and technical documentation to design and implement integrations effectively;
- Troubleshoot issues and propose efficient solutions with minimal oversight;
- Contribute to API design and discussions (e.g., device management, CRM management) in collaboration with architects and stakeholders;
- Ensure code is developed and delivered within a CI/CD pipeline environment;
- Work in an Agile environment, actively participating in planning, reviews, and retrospectives;
- Navigate and work effectively with UI/UX components (basic UI adjustments and integrations with design).
MUST HAVES
- 5+ years of experience with C++ (incl. STL, memory management, multithreading);
- Experience with Qt 5/6 and QML;
- Comfortable working on Windows;
- Networking: strong with TCP/UDP, IPv6, and common protocols;
- Experience with CMake, Git, and CI/CD workflows;
- Hands-on experience with unit testing (GTest, GMock);
- Ability to read and implement against API specs with minimal supervision;
- Clear communicator who can speak up in product/API design discussions;
- Availability to overlap 3–4 hours daily with the EST time zone;
- Upper-Intermediate English level.
NICE TO HAVES
- MacOS/Linux familiarity is a plus;
- Experience with SIP protocol, audio processing, or TLS;
- Python scripting for internal tools;
- Comfortable building/debugging on macOS;
- Prior experience working in product companies or startup environments.
PERKS AND BENEFITS
- Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps.
- Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities.
- A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands.
- Flextime: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive.
C++ Engineer (Senior) ID41762
Office
Barcelona, Spain
Full Time
September 25, 2025