Senior Non-Functional Testing Engineer (NFR)

INSUS - AI Solutions for Sustainable Transformation; Zürich; Sur place; CHF 120 000 - 170 000; Plein temps

Résumé du poste

INSUS AG in Switzerland is seeking a Senior Non-Functional Testing Engineer to ensure performance, resilience, security and reliability of banking systems. You will work with software engineers, security specialists and infrastructure teams to define measurable quality requirements and validate system readiness.

The role emphasizes hands-on testing, analysis of latency and capacity, and integration of automated NFR checks into CI/CD pipelines.

Qualifications

• Experience in testing non-functional requirements for complex banking systems.
• Hands-on testing across performance, security, resilience and scalability.
• Proficient in test automation using Java or TypeScript; Python a plus.
• Experience integrating NFR checks into CI/CD pipelines.

Responsabilités

• Design, execute and evaluate non-functional tests for banking platforms and channels.
• Conduct performance, load, soak and scalability tests; analyze bottlenecks.
• Validate resilience, failure handling and security controls (OWASP Top 10).
• Develop and maintain automated validation scripts and utilities.
• Collaborate with architects, security, DevOps and engineering teams; document results in Jira/Xray.

Connaissances

Non-Functional Testing

Performance Engineering

Resilience Testing

Security Testing

Test Automation (Java/TypeScript)

CI/CD Integration

Observability & Metrics

Jira/Xray

Outils

Jira

Xray

Description du poste

Senior Non-Functional Testing Engineer (NFR) – Banking

Industry: Banking & Financial Services

Location: Switzerland

Engagement: IT Consulting / Project Assignment

Seniority: Senior Specialist

Specialisation: Non-Functional Testing, Performance Engineering, Resilience, Security & Test Automation

About INSUS AG

INSUS AG is a Swiss IT consulting and technology services company supporting organisations in delivering complex IT transformation, digitalisation and technology initiatives.

We connect experienced IT professionals with challenging projects, focusing on technical excellence, reliable delivery and long-term client partnerships.

For a demanding assignment in the Swiss banking sector, we are looking for an experienced Senior Non-Functional Testing Engineer with strong technical expertise, hands-on testing capabilities and a solid understanding of banking systems.

Your Mission

As a Senior Non-Functional Testing Engineer, you will play a key role in ensuring that business-critical banking applications meet the highest standards of performance, scalability, resilience, security and operational readiness.

You will work closely with software engineers, solution architects, security specialists, infrastructure teams and business stakeholders to define measurable quality requirements, identify technical risks and validate system readiness.

The position requires a strong hands‑on approach, analytical thinking and the ability to work across complex enterprise technology environments.

Your Responsibilities

Non-Functional Testing & Engineering

• Design, execute and evaluate non-functional tests for business-critical banking platforms and digital channels.
• Conduct performance, load, stress, soak and scalability testing.
• Analyse latency, throughput, capacity limitations and system bottlenecks.
• Validate resilience and availability through failure scenarios, timeouts, retries and fault‑injection testing.
• Perform security‑focused quality checks covering OWASP Top 10, authentication, authorization, configurations and security headers.
• Support usability and accessibility validation based on WCAG principles.
• Assess observability, logging, monitoring, tracing, alerting and SLI/SLO requirements.

NFR Requirements & Quality Governance

• Translate business and technical requirements into measurable non-functional acceptance criteria.
• Define NFR test strategies, scenarios, thresholds, measurement points and validation methods.
• Establish traceability between requirements, test execution, results and evidence.
• Identify and communicate performance, security and operational risks.
• Support release readiness and quality decisions through evidence-based reporting.

Automation & Continuous Testing

• Develop and maintain automated testing utilities and validation scripts using Java or TypeScript.
• Apply Test-as-Code principles to ensure version‑controlled, reproducible test assets.
• Integrate NFR testing into CI/CD pipelines.
• Implement automated thresholds, quality gates and trend analysis.
• Collaborate with DevOps and development teams to continuously improve testing efficiency.

Technical Analysis & Collaboration

• Investigate NFR failures using application logs, metrics, distributed traces and code‑level reasoning.
• Identify root causes and recommend technical improvements.
• Collaborate with architecture, development, infrastructure and security teams.
• Document test cases, execution results, defects and supporting evidence in Jira/Xray.
• Communicate technical findings clearly to project stakeholders.
  

Your Profile

You are an experienced IT quality engineering professional with a strong understanding of complex banking applications and enterprise technology environments.

You bring:

• Solid knowledge of core banking processes, banking platforms and digital banking channels.
• Proven hands‑on experience in non-functional testing across multiple quality dimensions.
• Broad technical understanding of browsers, APIs, application services, databases, networks, IAM, proxies and WAF.
• Strong expertise in performance, scalability, resilience and availability testing.
• Practical understanding of OWASP Top 10, security testing and DAST/SAST findings.
• Familiarity with usability, accessibility and WCAG principles.
• Experience with observability concepts, logging, metrics, tracing and SLI/SLOs.
• Programming and test automation skills in Java or TypeScript (mandatory); Python is an advantage.
• Experience integrating automated NFR checks into CI/CD pipelines.
• Strong root‑cause analysis and technical troubleshooting capabilities.
• Experience using Jira and Xray for test management and evidence documentation.
• A structured, independent and quality‑driven working style.
• Strong communication and collaboration skills across technical and business teams.
  

What Makes You Successful

You combine deep hands‑on non-functional testing experience with the ability to understand complex banking technology landscapes.

You are capable of challenging requirements, identifying risks, analysing technical issues and providing practical recommendations supported by reliable test evidence.

You take ownership of quality outcomes and help ensure that business‑critical systems are ready for secure, stable and reliable production operation.

Why INSUS AG?

At INSUS AG, we value expertise, professionalism and strong client relationships.

We offer the opportunity to contribute to challenging technology initiatives in the Swiss financial services industry, collaborate with experienced professionals and apply your skills in demanding enterprise environments.

Our focus is on connecting the right expertise with the right projects while maintaining a transparent, professional and supportive consulting relationship.

Interested in Joining INSUS AG?

If you are a passionate Non-Functional Testing Engineer with banking experience and strong technical capabilities, we would be pleased to hear from you.

INSUS AG – Connecting Expertise. Delivering Technology Excellence.