Test Engineer (m/f/d)

Test Engineer (m/f/d)

• Location: 100% remote, hybrid or at our office in Traunstein – you decide
• Working hours: Full-time
• Work model: Flexible by arrangement
• Travel: Very limited, approximately twice a year for team events
• Salary: €45,000–90,000 gross per year, depending on expertise

About oneclick

With our oneclick™ Desktop-as-a-Service platform, we provide secure, scalable cloud workspaces for SMEs and large enterprises across sectors including retail, industry, logistics, healthcare and the public sector. In addition to our headquarters in Zurich and our development centre in Traunstein, we are represented in 7 countries across 4 continents. For three consecutive years, we have been the only European vendor featured in the Gartner® Magic Quadrant™ for Desktop as a Service, recognised for our innovation and data sovereignty.

How you support our team

We’re looking for an experienced Test Engineer (m/f/d) to join our growing team, taking responsibility for ensuring our complex, distributed platform runs reliably, securely and at high performance. You will build and maintain the test strategy across multiple services and layers, ranging from unit tests of individual microservices through to end-to-end tests covering the entire RDP/WebSocket streaming infrastructure. You will work closely with our development, DevOps and product teams and play a key role in embedding quality early in the development cycle. With us, you will have a direct impact on the quality of a live SaaS platform and work in a small, technically driven team with short decision-making paths. Our modern tech stack is consistently cloud-native, Kubernetes-first and GitOps-oriented. You will help shape our test strategy from the ground up and build something that lasts.

Your tasks and responsibilities

Test strategy & architecture

• Development and maintenance of a holistic testing strategy (unit, integration, E2E, load and security tests) for our oneclick platform
• Building and further developing the test automation infrastructure in GitLab CI/CD
• Defining coverage thresholds and quality gates in the CI pipeline

Microservice tests (Go / TypeScript)

• Writing and maintaining unit and integration tests for Go-based microservices
• Extending the Jest/Supertest test suite for the REST services (Node.js/TypeScript, Express, Passport)
• Testing GraphQL APIs and their schema consistency
• Mocking and stubbing external dependencies (Redis, MySQL/Percona, Twilio, Salesforce, Kubernetes API)

Backend tests (PHP/Laravel)

• Building and maintaining a PHPUnit/Pest test suite for the PHP-based backend services
• Feature and unit tests for Laravel controllers, service classes and Eloquent repositories
• Testing MQTT communication (VerneMQ) and asynchronous event flows
• Database testing strategies for MySQL/Percona XtraDB Cluster (PXC): migrations, transactions, collations
• Mocking external dependencies within Laravel (HTTP clients, queue jobs, events)

Frontend tests (Vue.js / Playwright)

• Building a Playwright E2E test suite for the Vue.js-based frontends
• Coverage of critical user journeys: login/SSO, app start-up, desktop streaming, admin workflows
• Visual regression tests for white-label configurations
• Component-level tests with Vitest or Vue Test Utils for isolated UI logic
• Integration of Playwright tests into GitLab CI with screenshots and traces as artefacts

Load testing & performance

• Designing and running load tests for critical API endpoints and streaming connections (e.g. with k6 or Artillery)
• Identifying performance bottlenecks and regressions
• Smoke and sanity tests following deployments to dev, staging and live environments

Security & compliance testing

• Coordinating and tracking penetration tests (e.g. A3Sec engagements)
• Testing CORS policies, authentication flows (OAuth, SSO, Salesforce), ingress whitelists
• Validating TLS/mTLS configurations, cipher suites and certificate renewal

Our tech stack at a glance

How you inspire us

• At least 3 years’ experience in software testing, including significant time spent on automated tests
• Strong knowledge of at least one of our core languages: Go or TypeScript/Node.js
• Hands-on experience with Jest, ts-jest, Supertest or comparable test frameworks
• Experience with CI/CD pipelines, ideally GitLab CI
• Knowledge of REST API testing (Postman, Supertest or similar)
• Understanding of containerised workloads (Docker)
• A structured, self-directed way of working in a remote-first team
• A real enthusiasm for proactively identifying and closing quality gaps
• Strong communication skills – you can clearly document findings and share them with colleagues and management
• Business-fluent German (C1) and very good English (B2 minimum)
• European citizenship or a permanent working visa for Germany

How you can surprise us

• Experience with PHP/Laravel testing: PHPUnit, Pest, Laravel Dusk
• Knowledge of Playwright or Cypress for frontend E2E tests
• Experience with Vitest or Vue Test Utils for Vue.js component tests
• Experience with GraphQL testing
• Understanding of the RDP protocol, WebSocket connections or remote desktop technology
• Familiarity with protocols: MQTT, LDAP, OAuth2/OIDC
• Experience with load testing tools (k6, Locust, Artillery)
• Basic knowledge of security testing (OWASP Top 10, DAST)

Why you should join us

Remote working & flexibility

What we enable for our customers with our product also applies to you: work from the office, hybrid or up to 100% remotely from home, and organise your working hours flexibly. Choose your preferred kit from a wide range of available models and use the OS that suits you best (Microsoft, Apple, Linux).

Teamwork on equal footing

At oneclick you’ll work with brilliant colleagues in a supportive environment with maximum flexibility and on equal terms, giving you the space to bring in and develop your talents and personality.

Shape your job

Your career can develop in any direction. Would you like to take on responsibility for projects early on? Are you discovering new talents and abilities in yourself? Great – let’s find the ideal tasks for you! Through our oneclick Learning offerings you also have access to modern skills diagnostics, and through our partner academies a wide range of learning opportunities.

How to apply

Please apply directly here on LinkedIn or send your application by email (jobs@oneclick-cloud.com) to Pascal Poschenrieder:

• An up-to-date CV
• Proof of qualifications (references, certificates)
• A brief note on your salary expectations and availability

A formal cover letter is not required.

We’re looking forward to hearing from you!