# Software Development Engineer in Test (SDET) **Company:** [Expereo](http://jobs.workable.com/companies/5XiroBPj4tdAM8qeZRWEJw.md) **Location:** Barcelona, Spain **Workplace:** hybrid **Employment type:** Full-time **Department:** Information Technology [Apply for this job](http://jobs.workable.com/view/b2d7960a-7164-483f-b06c-e323b6e212c6) ## Description We are the **Intelligent Internet Platform.** We connect **People, Places** and **Things** anywhere, **managing Internet Performance** better than anyone else, while providing **One Global Experience,** giving **Visibility, Control** and **Security** through **expereoOne.** Expereo believes in the power of Internet connectivity. As the world's largest provider of managed internet, SD-WAN/SASE, and Cloud connectivity solutions, we power enterprises and government sites worldwide, helping to enhance every business' productivity with flexible and optimal Internet performance. As a trusted partner of Fortune 500 enterprises and carriers, our continued aim and success in helping both our customers and partners depends solely on the talented individuals that make Expereo a dynamic, effective, multicultural, and equitable environment.   **About the role** We are looking for a **Software Development Engineer in Test (SDET)** to join our **Observability & Monitoring** software development team. The team builds and operates **internal, custom monitoring and observability platforms** that provide deep visibility into our services, enabling proactive detection, faster incident resolution, and improved reliability across the company. As an SDET, you will take an **engineering-first approach to quality**, designing and building automated testing solutions, frameworks, and tooling to ensure the reliability of systems handling **large volumes of metrics, logs, alerts, dashboards, and data pipelines**. A key challenge in this role is working with **high‑volume telemetry data**, where quality is not only about correctness but also about **signal accuracy** — reducing false positives, detecting missing data, and ensuring that the system reflects reality as closely as possible. **What you’ll do**  - Design and implement **automated test frameworks and tooling** for backend systems and APIs - Develop **end-to-end and integration test suites** for observability platforms - Validate the correctness, consistency, and completeness of **metrics, logs, and alerting systems** - Analyze system behavior to detect **false positives, false negatives, and data inconsistencies** - Test dashboards and visualizations built with **Grafana and Kibana** - Test data flows across **time-series and relational databases** - Integrate test suites into **CI/CD pipelines** and enforce automated quality gates - Work closely with developers to **improve system testability and reliability** - Identify coverage gaps and build **scalable automation solutions** - Participate in incident analysis and design tests to **prevent regressions** - Ensure changes are covered by **appropriate regression tests** to maintain system stability **Our tech stack (what you’ll work with)** - **Python** (services and test automation) - **Elastic stack** (logs, events, search) - **Kibana** dashboards and visualizations - **Grafana** dashboards and alerting - **InfluxDB** (time-series data) - **PostgreSQL** (relational data) - **Kubernetes** (container orchestration) - **AWS services** (cloud infrastructure) - APIs and backend services supporting a **custom, in‑house monitoring platform** - CI/CD pipelines with automated testing and quality gates ## Requirements **Required** - Strong experience in **software testing and test automation** - Solid programming skills in **Python** - Experience building and maintaining **test frameworks and automation tooling** - Experience testing **APIs, backend systems, and distributed services** - Strong ability to work with **data-intensive systems** (metrics, logs, events) - Ability to analyze system behavior and detect **anomalies, inconsistencies, and signal quality issues** - Understanding of **CI/CD pipelines and automated quality gates** - Strong analytical and problem-solving skills **Nice to have** - Experience with **observability or monitoring platforms** - Familiarity with **Elastic, Kibana, Grafana, InfluxDB, PostgreSQL** - Exposure to **Kubernetes and cloud environments (AWS)** - Experience testing **distributed systems** - Knowledge of performance, reliability, or resilience testing - Experience in Agile / Scrum teams **How we work** - Quality is an **engineering responsibility**, not a final checkpoint - Testing is **code-driven, automated, and scalable** - Strong focus on **data correctness, signal quality, and system reliability** - We continuously balance **precision vs noise** in monitoring systems - We value pragmatism, ownership, and continuous improvement - We work in a **hybrid remote model**, balancing flexibility with collaboration ## Benefits - Work on **core internal platforms** with high impact on reliability and operations - Challenges involving **large-scale telemetry, signal accuracy, and system behavior** - Strong engineering culture with collaboration across testing, development, and DevOps - Modern, **cloud-native and automation-first** environment - Hybrid remote working model - Competitive compensation and local benefits - International, collaborative engineering environment **Beyond the Job** We’re proud of our focus on [Environment, Social and Governance](https://www.expereo.com/esg) as well as the passion we display for the communities where we live and work. EEO (Equal Employments Opportunities) Statement: Expereo is an Equal Opportunities employer who aims to support and celebrate every employee that comes through our doors. We respect and support all of our people regardless of background, religion, nationality, sexual orientation, age, or physical condition.