Performance Test Architect (m/f/d)

Why SOFICO?

At SOFICO, we're shaping the future of mobility, and we're doing it together. Our software, Miles , helps leasing, fleet, and mobility providers around the world manage their operations through one powerful, integrated platform. As our customers continue to grow and evolve, ensuring exceptional performance, scalability, and reliability becomes increasingly critical.

Behind every successful deployment is a team of passionate experts committed to delivering high-quality software and outstanding customer experiences. We foster a collaborative, international environment where innovation, ownership, and continuous learning are at the heart of everything we do.

From our office in Ghent , we're looking for a Performance Test Architect to help drive our performance engineering vision. In this role, you'll take ownership of the performance strategy across our platform, ensuring our applications remain scalable, resilient, and efficient as they grow. Working across the full technology stack, you'll identify performance risks before they impact customers, lead complex performance investigations, and provide architectural guidance to optimize database, API, and user interface performance.

As a key member of our engineering organization, you'll collaborate closely with development, product, cloud operations, and customer-facing teams to establish performance best practices, shape technical decisions, and build a culture where performance is an integral part of software delivery. If you're passionate about solving complex scalability challenges and enabling high-performing software at scale, we'd love to hear from you.

What you'll do...

As a Performance Test Architect , you are the subject matter expert responsible for defining, driving, and governing the performance engineering strategy for our automotive software platform. You ensure the performance, scalability, stability, and reliability of our solutions through a combination of proactive performance engineering, architectural guidance, and reactive troubleshooting.

Working across the full technology stack, you assess and optimize performance at the database, API, application, and user interface levels . You collaborate closely with development, product, infrastructure, and customer-facing teams to design scalable solutions, identify performance risks early, and resolve complex performance challenges.

Your main responsibilities :

• Define and evolve the organization's performance testing and performance engineering strategy.
• Design and execute proactive performance assessments across database, API, application, and UI layers to identify risks and bottlenecks before they impact users.
• Lead root cause analysis of complex performance issues and provide architectural recommendations to improve system efficiency.
• Design, oversee, and execute load, stress, endurance, and scalability testing to validate platform resilience.
• Establish performance standards, benchmarks, and non-functional requirements for products and releases.
• Guide development teams on performance best practices, code optimization, observability, and scalable architecture design.
• Collaborate with product, development, cloud operations, and customer support teams to ensure performance considerations are embedded throughout the software lifecycle.
• Support customers and internal stakeholders in diagnosing and resolving business-critical performance challenges.
• Manage and continuously improve performance testing environments, tooling, and monitoring capabilities.
• Analyze, optimize, and govern batch processing workloads to maximize stability, throughput, and resource utilization.
• Mentor colleagues and promote a culture of performance engineering excellence across the organization.

What you'll bring...

You have a passion for solving complex performance challenges and improving software efficiency , combined with a critical and analytical mindset.

Must have :

• Hands-on experience with DB, API, and UI performance testing optimization .
• Strong analytical skills for identifying bottlenecks .
• Accuracy and diligence in fine-tuning complex systems.
• Collaboration skills for cross-functional teamwork.
• Proactive problem-solving mindset.
• Strong communication for translating performance insights.
• Eagerness for continuous learning.
• Experience in tools like JMeter, K6, Dynatrace, … is essential.
• ISTQB CTFL 4.0 certification mandatory, ISTQB CT-PT certification recommended

What's in it for you ...

• Join an international, multicultural company with more than 35 years of experience, which doubles in size every 5 years. We encourage a horizontal, open corporate culture where career development and personal growth are central. You benefit from a comprehensive 6-month onboarding, including a dedicated job coach, and receive ongoing learning opportunities. Participate in fun team activities such as after-work drinks, barbecues, family days, and company weekends. Additionally, you work in a modern and easily accessible office, equipped with charging stations for electric cars and bikes, as well as free shared bikes.
• Competitive salary package
• Company car with fuel card/ charging card or mobility budget
• Meal vouchers
• Group and hospitalization insurance
• Additional benefits: bike leasing and flexible working hours