Senior C++ Developer

Role Overview

Senior C++ Developers are key contributors to the design, development, and maintenance of our high-performance trading software solutions. They build reliable, low-latency, and scalable systems that power mission-critical trading operations for banks, brokers, and funds. They combine autonomy, accountability, and efficiency to deliver superior product quality and client satisfaction. Senior C++ Developers are instrumental in promoting a culture of excellence, continuous improvement, and client success.

Summary of Key Responsibilities

• Design, develop, implement, test, and maintain efficient and reliable C++ components for trading systems.
• Ensure product quality, scalability, and performance through clean code, testing, and optimization.
• Collaborate closely with Product Owners, Business Analysts, Quality Assurance Specialists, and DevOps Engineers to deliver solutions aligned with client and market needs.
• Mentor junior Developers and foster accountability, autonomy, and team spirit.
• Uphold deadlines, compliance standards, confidentiality, and client success as core professional values.
• Provide regular updates and report activities to management.

Detailed Responsibilities

• Software Design and Development

• Design and implement C++ software modules with a focus on reliability, scalability, and low latency and real-time requirements for some software products.
• Write effective, scalable high quality code. Maintain the existing code.
• Develop robust trading functionalities across multiple asset classes and market workflows.
• Optimize system performance, memory usage, and throughput for mission-critical applications.
• Ensure full adherence to internal coding standards, documentation practices, and version control.
• Contribute to maintaining product quality and consistency across releases.

• Quality, Accountability, Efficiency, and Compliance

• Design, implement and execute automated unit tests to conduct unit, integration, and performance testing to guarantee product quality and stability.
• Proactively identify and resolve bottlenecks and defects.
• Ensure compliance with coding standards, security protocols, and confidentiality obligations.
• Write, edit, and maintain technical documentation for trading software, and ensure that all documents are accurate, consistent, and aligned with the latest product versions and releases.
• Review and update existing documentation to maintain quality, relevance, and compliance with standards.
• Deliver tasks within agreed deadlines, maintaining high standards of efficiency and professionalism.
• Provide regular updates and report activities to management.

• Collaboration and Client Success

• Work closely with Business Analysts to translate functional requirements into effective technical solutions while prototyping solutions when required.
• Support the Quality Assurance and DevOps teams to ensure smooth deployment and reliable product performance in production.
• Contribute to customer satisfaction by providing robust, maintainable, and scalable systems that meet client expectations.
• Act as a proactive partner in achieving client success and long-term relationships.

• Leadership, Mentorship, and Continuous Improvement

• Mentor and guide junior Developers, promoting autonomy, accountability, and technical excellence.
• Encourage knowledge sharing, code reviews, and team collaboration.
• Stay current with technological advancements in C++ and trading technology.
• Stay updated on financial markets, trading workflows, and new technologies relevant to trading systems.
• Contribute to process improvement initiatives and the evolution of best practices across the development lifecycle.

Profile & Qualifications

• 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 document in a simple and meaningful way.
• Deep knowledge of development best practices (Agile methodology and Atlassian suite, i.e. Bitbucket, Jira, and 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 (e.g. Git, Jenkins). Full autonomy in using debugging and profiling tools.
• Familiarity with containerization and orchestration tools (e.g. Docker, Kubernetes).
• Experience with financial systems, trading workflows, or market data preferred.
• 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.
• Fluency in English and Italian (both written and spoken).

Commitment to confidentiality, continuous learning, and professional ethics.

Euronext Values

Unity

•        We respect and value the people we work with

•        We are unified through a common purpose

•        We embrace diversity and strive for inclusion

Integrity

•        We value transparency, communicate honestly and share information openly

•        We act with integrity in everything we do

•        We don’t hide our mistakes, and we learn from them

Agility

•        We act with a sense of urgency and decisiveness

•        We are adaptable, responsive and embrace change

•        We take smart risks

Energy

•        We are positively driven to make a difference and challenge the status quo

•        We focus on and encourage personal leadership

•        We motivate each other with our ambition

Accountability

•           We deliver maximum value to our customers and stakeholders

•           We take ownership and are accountable for the outcome

•           We reward and celebrate performance

We are proud to be an equal opportunity employer. We do not discriminate against individuals on the basis of race, gender, age, citizenship, religion, sexual orientation, gender identity or expression, disability, or any other legally protected factor. We value the unique talents of all our people, who come from diverse backgrounds with different personal experiences and points of view and we are committed to providing an environment of mutual respect.

This job description is only describing the main activities within a certain role and is not exhaustive. It does not prevent to add more tasks, projects.