Performance Testing Specialist (m/f/d)

Sofico; Oost-Vlaanderen; Sur place; EUR 60 000 - 90 000; Plein temps

Avantages offerts par ce poste

Bike leasing

Flexible working hours

Group hospitalisation insurance

Résumé du poste

Sofico is seeking a Performance Testing Specialist to ensure the performance, stability, scalability, and reliability of our automotive software solutions. You will perform proactive and reactive testing across DB, API, and UI layers, identify bottlenecks, and guide development teams on improvements.

You will work in a collaborative, learning-focused environment with a six-month onboarding, ongoing training, and opportunities for career growth, while using tools like JMeter, K6, and Dynatrace to

Qualifications

• 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.
• ISTQB CTFL 4.0 certification is mandatory; CT-PT recommended.

Responsabilités

• Perform proactive performance testing across DB, API, and UI layers to identify bottlenecks.
• Execute reactive performance investigations across the full stack to isolate root causes.
• Conduct performance and load testing to validate scalability and resilience.
• Provide technical guidance to development and product teams for performance improvements.
• Execute load and stress tests at DB, API, and UI levels to ensure end-to-end resiliency.
• Assist customers in identifying and resolving performance issues with guidance.
• Manage dedicated performance/load environments for accurate simulations.
• Analyze and optimize batch jobs for stability and throughput under varying loads.

Connaissances

Performance testing

Analytical skills

Problem-solving

Cross-functional collaboration

Communication

Learning mindset

Formation

ISTQB CTFL 4.0 certification

Outils

JMeter

K6

Dynatrace

Description du poste

What the job is about

As a Performance Testing Specialist , you ensure the performance, stability, scalability, and reliability of our automotive software solutions through both proactive and reactive performance engineering. This includes identifying issues before they surface as well as diagnosing and resolving problems reported by internal teams or customers. You work across the full technical stack, conducting performance analysis on database (DB), API, and user interface (UI) layers.

Your responsibilities:

• Perform proactive performance testing across DB, API, and UI layers to identify potential bottlenecks before they impact users.
• Execute reactive performance investigations when issues arise, analyzing behavior across the full stack to quickly isolate and resolve root causes.
• Conduct performance and load testing to validate system scalability and resilience under stress.
• Provide technical guidance to development and product teams for improving performance at structural and code levels.
• Execute load and stress tests at DB, API, and UI levels to ensure end‑to‑end system resiliency.
• Assist customers in identifying, diagnosing, and resolving performance‑related issues using both proactive guidance and reactive troubleshooting.
• Manage and maintain dedicated performance/load environments to ensure accurate simulations at different stack layers.
• Analyze and optimize batch jobs for stability and throughput across varying load conditions.

Your interests and skills

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

Requirements:

• 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 we offer you

• Competitive salary package
• Group and hospitalization insurance
• Additional benefits: bike leasing and flexible working hours

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.