Performance & Reliability Engineer

Performance & Reliability Engineer 📍 Hybrid – Gdańsk (2 days office / 3 days remote) About Consid Consid is an award-winning IT and consulting company founded in Sweden, with a strong presence across Scandinavia and Europe, including Poland. We partner with leading enterprises to build modern, scalable digital solutions, combining strong engineering culture with long-term, trust-based collaboration. At Consid, we value ownership, quality, and continuous development. About the Role You will own performance across our entire cloud-native platform, from defining baselines and SLOs to running load tests, building observability dashboards, and driving capacity planning. This is not a support role. You will shape the testing strategy from the ground up. Responsibilities – Design and execute performance, load, stress, and scalability tests across APIs, end-to-end flows, and infrastructure – Define performance baselines, SLAs, and SLOs and own the process of maintaining them over time – Integrate non-functional tests (performance, accessibility, visual regression, DAST) into CI/CD pipelines – Analyse system behaviour under real and synthetic load: latency, throughput, error rates, resource saturation – Identify and document bottlenecks; collaborate directly with backend engineers on resolution – Build dashboards to track performance trends, capacity headroom, and SLO compliance – Conduct capacity planning and scalability analysis ahead of growth milestones – Deliver clear post-mortems, performance reports, and actionable briefs for engineering and product leadership Requirements – Several years (6+) of hands-on performance and non-functional testing experience in cloud-native environments – Strong practical AWS experience, EKS, ECS, EC2, S3, CloudWatch, and related tooling – Proven use of performance tools: k6, JMeter, Taurus, Gatling, or equivalent – Ability to automate non-functional checks and integrate them into CI/CD (GitHub Actions, Jenkins, or similar) – Comfortable reading and writing code in Java, Python, or JavaScript, enough to build test frameworks and scripts – Solid understanding of distributed systems, microservices, REST APIs, and async messaging patterns – Experience with observability tooling: Kibana, CloudWatch, Grafana, or similar – Strong documentation instincts, post-mortems, and performance briefs that teams can act on – Experience working in distributed, international teams and fluent English Nice to Have – Real User Monitoring (RUM) and synthetic testing experience – Kubernetes (EKS) autoscaling validation – Security considerations in performance testing contexts – Terraform for infrastructure-as-code Tech Stack • Backend: Java (Spring Boot) • Frontend: Vue 3 • Databases: PostgreSQL (Amazon Aurora), Redis • Cloud: AWS (EKS, ECS, EC2, S3) • Infrastructure: Kubernetes, Terraform • CI/CD: Jenkins, GitHub Actions Recruitment Process • Screening interview • Client Interview (Cultural & Behavioral) • Technical Interview with the team