Senior C++ Developer
at Euronext
Posted 9 hours ago
No clicks
- Compensation
- Not specified EUR
- City
- Porto
- Country
- Portugal
Currency: € (EUR)
Join us as a Senior C++ Developer contributing to design, development, and maintenance of high-performance real-time trading software in Porto. You will build reliable, low-latency, scalable systems powering mission-critical trading for banks, brokers, and funds. The role emphasizes autonomy, code quality, and continuous improvement within a hybrid model (4 days per week in the office). You will collaborate with Product Owners, QA, and DevOps, mentor junior developers, and drive performance and reliability across releases.
Join us as a Senior C++ Developer
Shape the future of real-time trading experiences
We are looking for a Senior C++ Developer to contribute to the design, development, and maintenance of our high-performance trading software solutions in Porto. You will build reliable, low-latency, and scalable systems that power mission-critical trading operations for banks, brokers, and funds.
This role requires strong autonomy, accountability, and a commitment to product quality and client success, while promoting a culture of excellence and continuous improvement.
Hybrid working model: 4 days per week in the office
Key Responsibilities
Software Design & Development:
- Design and implement C++ software modules focused on reliability, scalability, low latency, and real-time requirements
- Write effective, scalable, high-quality code and maintain existing components
- Develop robust trading functionalities across multiple asset classes and market workflows
- Optimize system performance, memory usage, and throughput for mission-critical applications
- Ensure adherence to internal coding standards, documentation practices, and version control
- Maintain product quality and consistency across releases
Quality, Accountability & Compliance:
- Design and execute automated unit, integration, and performance tests to guarantee stability
- Proactively identify and resolve bottlenecks and defects
- Ensure compliance with coding standards, security protocols, and confidentiality obligations
- Write, maintain, and update accurate technical documentation aligned with product releases
- Deliver tasks within agreed deadlines, maintaining high standards of efficiency and professionalism
Collaboration & Client Success:
- Work closely with Product Owners and Business Analysts to translate functional requirements into technical solutions
- Prototype solutions when required
- Support QA and DevOps teams to ensure smooth deployment and reliable production performance
- Contribute to customer satisfaction through robust, maintainable, and scalable systems
- Act as a proactive partner in achieving long-term client success
Leadership, Mentorship & Continuous Improvement:
- Mentor and guide junior Developers, promoting autonomy, accountability, and technical excellence
- Encourage knowledge sharing, code reviews, and team collaboration
- Stay current with advancements in C++ and trading technology
- Stay updated on financial markets, trading workflows, and relevant technologies
- Contribute to process improvement initiatives and best practices across the development lifecycle
Profile & Qualifications
Technical Skills:
- BSc in Computer Science, Engineering, or relevant field
- Minimum 5 years of professional experience in C++ development (C++11 or later) and Python Developer for server-side solutions
- Advanced SQL skills
- Excellent programming skills, with the ability to produce technical documentation in a simple and meaningful way
- Deep knowledge of development best practices (Agile methodology and Atlassian suite: Bitbucket, Jira, Confluence) and industry-standard libraries (stdlib)
- Strong expertise in multi-threaded, high-performance, and network programming
- Solid understanding of Linux environments, Version Control Systems, and CI/CD tools (Git, Jenkins)
- Full autonomy in using debugging and profiling tools
- Familiarity with containerization and orchestration tools (Docker, Kubernetes)
- Experience with financial systems, trading workflows, or market data preferred
Soft Skills & Mindset:
- Proven sense of accountability, autonomy, efficiency, and team working
- Strong analytical and problem-solving skills, with attention to detail and product quality
- Excellent communication and teamwork abilities, with a client-first mindset
- Commitment to confidentiality, continuous learning, and professional ethics
Languages:
- Fluency in English (both written and spoken)
Why Join Us
- Work on mission-critical, low-latency trading technology
- Join a highly collaborative environment where senior engineers have real influence
- Solve complex performance and scalability challenges with modern C++
- Mentor others while continuing to grow technically

