Senior C++ Developer

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 (C11 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

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 dont 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.

Additional Information

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.