01
TRCI-26-04314
Senior Performance Test Engineer (JavaScript/k6)
Senior Performance Test Engineer needed to design and build JavaScript (ES6+) automated performance testing frameworks using k6, covering REST, GraphQL, and web applications. The role requires strong performance engineering fundamentals (methodologies, analysis, tuning), solid CI/CD experience (GitHub Actions/GitLab CI/Azure DevOps/Jenkins), and comfort working in cloud-native environments with Docker, Kubernetes, and observability tooling (Grafana/Prometheus/Application Insights). Strong analytical skills and the ability to collaborate and influence across distributed teams are expected.
Position summary
- Location
- Poland
- Workplace
- On-site
- Employment
- Contract
- Experience
- Minimum 10 years and Maximum 12 years
Role overview
Why This Role Matters.
Senior Performance Test Engineer needed to design and build JavaScript (ES6+) automated performance testing frameworks using k6, covering REST, GraphQL, and web applications. The role requires strong performance engineering fundamentals (methodologies, analysis, tuning), solid CI/CD experience (GitHub Actions/GitLab CI/Azure DevOps/Jenkins), and comfort working in cloud-native environments with Docker, Kubernetes, and observability tooling (Grafana/Prometheus/Application Insights). Strong analytical skills and the ability to collaborate and influence across distributed teams are expected.
Your Impact
Deliver Enterprise Value
Help organisations solve complex business problems through modern technology, consulting expertise and measurable outcomes.
Collaboration
Work Across Teams
Collaborate with consultants, architects, engineers and client stakeholders throughout the project lifecycle.
Growth
Learn Continuously
Gain exposure to enterprise technologies, certifications, mentoring and real-world project experience.
Career Path
Grow With Ubique
Build a long-term consulting career with opportunities to take on greater responsibility and leadership over time.
Responsibilities
What You'll Be Doing.
Every role at Ubique contributes directly to solving meaningful business challenges for our clients.
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Proven experience developing automated tests and frameworks in JavaScript.
03
Experience testing REST APIs, GraphQL APIs, and web applications.
04
Knowledge of performance engineering methodologies and performance tuning.
05
Experience with CI/CD pipelines (GitHub Actions, GitLab CI, Azure DevOps, Jenkins).
06
Experience using Git and collaborative development workflows.Cloud & Infrastructure
07
Strong communication and stakeholder management.
08
Ability to influence technical direction without direct authority.
09
Passion for quality engineering and developer enablement.
10
Ability to work across global, distributed teams.
Technology stack
Tools & Technologies.
The platforms and technologies you'll use to build modern, enterprise-grade solutions.
01
JavaScript
Required
02
ES6
Required
03
k6
Required
04
REST
Required
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GraphQL
Required
06
Web applications
Required
07
Performance testing
Required
08
Performance engineering
Required
09
Performance tuning
Required
10
CI/CD
Required
11
GitHub Actions
Required
12
GitLab CI
Required
13
Azure DevOps
Required
14
Jenkins
Required
15
Git
Required
16
Docker
Required
17
Kubernetes
Required
18
AWS
Required
19
Azure
Required
20
GCP
Required
Requirements
Skills & Experience.
We value curiosity, collaboration and continuous learning. If you don't meet every requirement but believe you can make an impact, we'd still love to hear from you.
Essential
Required Qualifications
JavaScript (ES6+)
Automated test development in JavaScript
Test framework development (JavaScript)
k6 performance testing
Performance testing of REST APIs
Performance testing of GraphQL APIs
Performance testing of web applications
Performance engineering methodologies
Performance tuning fundamentals
CI/CD pipelines (GitHub Actions or GitLab CI or Azure DevOps or Jenkins)
Git and collaborative workflows
Preferred
Nice to Have
Docker
Kubernetes
Cloud platforms (AWS or Azure or GCP)
Observability/monitoring tools (Grafana or Prometheus or Application Insights or similar)
Stakeholder management
Ability to influence without authority
What you'll gain
More Than Just A Job.
We're committed to helping every team member grow professionally, personally and technically while working on meaningful projects.
Global Exposure
Collaborate with international clients and multicultural teams on enterprise programmes.
Continuous Learning
Expand your expertise through mentoring, certifications and hands-on project experience.
Career Growth
Take ownership, develop leadership skills and grow your consulting career over time.
Flexible Working
Hybrid and remote collaboration designed around trust and delivering exceptional outcomes.
People First
Join a supportive culture where collaboration, respect and long-term relationships come first.
Enterprise Projects
Work on meaningful technology initiatives for leading organisations across industries.
Apply
Apply for Senior Performance Test Engineer (JavaScript/k6)
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