Senior Software Developer in Test (Senior SDET)

Are you passionate about driving quality through code? Lumen Dynamics is on the lookout for a highly skilled API-focused Developer in Test with deep expertise in contract testing, mobile automation, and unit testing best practices. This role is ideal for someone who thrives in coaching environments, champions shift-left testing, and can influence development teams to adopt robust testing strategies across the stack. Requirements Key Responsibilities Lead the creation, review, and optimisation of unit , component , and contract tests for APIs and mobile applications. Coach and mentor developers on test design , risk-based testing , and test strategy , with clear articulation of the distinctions between test types. Evaluate test coverage and placement based on risk , code complexity , stability , and historical defects . Drive shift-left testing practices and embed quality early in the development lifecycle. Champion mobile testing using tools like Espresso (Android) and XCUITest (iOS), both at UI and service levels. Build and maintain scalable test automation frameworks for mobile and API layers. Influence and track improvements in test coverage and automation maturity across teams. Tech Stack Languages & Frameworks : Java, React, Vert.x (primary), Spring Boot (secondary) Mobile Testing : Espresso, XCUITest Contract Testing : Pact, PactFlow, OpenAPI Spec CI/CD & DevOps : GitLab, Jenkins, YAML, Docker, Kubernetes (k9s), AWS EKS Monitoring & Reporting : Grafana, SonarCloud Test Management : Qmetry, Xray, JIRA Nice to have: Kubernetes (k8s), AWS EKS Must-Have Experience Mobile API testing expertise with a mobile-first testing approach Test architecture design Proven experience implementing the test pyramid and shift-left strategies . Strong background in unit and component testing using JUnit/NUnit . Hands-on experience with contract testing for mobile APIs using Pact/PactFlow or OpenAPI Spec . Skilled in configuring SonarCloud for optimal test scanning. Solid understanding of QA principles , with the ability to explain and apply them across test levels. Experience with GitLab , YAML scripting , and Jenkins pipeline creation. UI automation framework development for Android and iOS . Familiarity with accessibility testing and relevant plugins. RESTful service testing using Rest Assured , Postman , and similar tools. Comfortable working in complex data environments . Nice to Have Experience in the airline domain . Exposure to React testing using React Testing Library (re3/re4). Experience with Playwright for end-to-end testing. AWS cloud services knowledge. Highlights You’ll be part of a supportive team that encourages growth and offers opportunities to work on exciting projects with leading clients. Originally posted on Himalayas