Junior Performance Tester

How do you help make a difference?  
As a Young Graduate Junior Performance Tester, you contribute to the validation and qualification of application performance across SNCB/NMBS systems and services. You support performance testing activities by preparing, executing and analysing performance test campaigns, helping ensure that applications meet Service Level Objectives (SLOs) and Non-Functional Requirements (NFRs). You work with performance testing environments, test datasets, APIs, databases and monitoring tools while collaborating with delivery teams during testing and production validation activities. 

What is your role at Ypto? 

As a Junior Performance Tester, you will take on the following responsibilities: 

• You contribute to the preparation, execution and validation of performance testing activities, including Load Testing, Stress Testing, Endurance Testing and Scalability Testing campaigns. 

• You prepare and execute performance test scenarios based on functional and non-functional requirements, realistic user profiles, workload distributions and workload models. 

• You build, maintain and execute performance test scripts and testing assets using Gatling and contribute to CI/CD integration activities. 

• You participate in the preparation and validation of performance test environments, including verification of test accounts, configuration data, connectivity and deployment readiness. 

• You monitor application behaviour during test execution, collect performance metrics and produce preliminary analysis reports to support bottleneck identification. 

• You support production validation and performance qualification activities and collaborate through source control platforms such as Git or Bitbucket. 

Why is this job a good fit for you? 

• You hold a Bachelor’s or Master’s degree in Information Technology. 

• You have less than 2 years of professional experience. 

You also possess these technical skills: 

• You have a basic understanding of APIs and web services (REST, SOAP).

• You have basic knowledge of relational databases and SQL.

• You are interested in software testing and application performance.

• You are familiar with performance testing concepts such as Load Testing and Stress Testing.

• You can analyse test results and identify potential performance issues.

• You are willing to learn performance testing tools such as Gatling.

• You are familiar with version control tools such as Git.

• You have a basic understanding of CI/CD and modern software development practices.

And these soft skills: 

• You demonstrate strong analytical thinking and a problem-solving mindset. 

• You show curiosity, willingness to learn and a continuous improvement mindset. 

• You communicate clearly and work effectively as a team player. 

• You pay close attention to detail. 

Asset: 

• You have clear, structured communication skills in English (reading, writing and understanding). 
• You have professional proficiency in French or Dutch. 
• You are available to work in a hybrid model with at least 2 days onsite per week. 

Diversity Statement 

Everyone is unique. That's why we believe it’s important that you can be yourself — it makes SNCB stronger. We therefore place great value on diversity and inclusion. 

What can you expect from us? 

Choosing SNCB means choosing to contribute to the digital transformation of the Belgian railways. You will have a job with social impact and ample opportunity to make your own contribution. Alongside a healthy work-life balance and a competitive salary, we offer: 
 
Hybrid working, with a balanced weekly mix of office and remote work, combined with flexible hours. 
35 days of annual leave. 
A mobility package with a company car (also available via our mobility plan) or alternative mobility choices, complemented by a public transport season ticket. 
A target bonus. 
A comprehensive insurance package, with hospitalisation and dental care for the whole family. 
Coverage of outpatient medical costs. 
Group insurance, including a supplementary pension (cafeteria plan). 
Meal vouchers & eco vouchers. 
Net allowances for hybrid working and an internet allowance. 

Where will you be working? 

You will work near Brussels-South station and join the Testing Chapter RTO-team. 

What’s next? 

You apply online. 
We take a close look at your CV and check whether it matches the profile you are looking for. We may call you briefly to ask about your motivation and experience. 
We invite you for a first (online) HR interview where you can demonstrate your motivation, experience and expectations. In preparation, we will ask you to complete an online personality questionnaire. 
If the first interview is positive, we invite you for a second technical interview in Brussels. This interview will be with the team, where we’ll discuss the role and how your skills align with the team’s needs. 
If everything goes well, we will make you a contract offer. 
You start your new job! 
 
We reserve the right to adjust or pause this procedure if necessary. Our recruitment team will select the profiles that best match the job requirements to ensure an optimal fit. 

Do you have any further questions? 

Ypto recruitment 
Mail: ypto-recruitment@belgiantrain.be