Senior Software Development Engineer in Test (Backend Automation)

About the role

An in-house trading platform covering order management, execution and data analysis, running on a distributed event-driven backend, is hiring a hands-on SDET to own backend test automation. The role covers service, integration, contract, data, resilience and performance testing, and involves co-architecting a unified testing framework with the UI SDET.

Key responsibilities

• Co-architect a unified testing framework with shared foundations, cross-layer scenarios and a single quality view
• Build automated service, integration and contract tests for REST APIs, WebSocket services and Kafka producers and consumers
• Test event-driven flows end to end, including message ordering, idempotency, replay and schema evolution
• Build test harnesses with controlled test data and service virtualization
• Design isolated, on-demand test environments on Linux and AWS, defined as code
• Write data-validation tests and cover resilience and failure modes
• Own backend performance testing, baselines, regression detection and bottleneck profiling
• Own backend test execution in CI/CD and make failures diagnosable with logs, traces and correlation IDs
• Work with backend engineers, infrastructure, business analysts and traders to automate critical workflows

Required profile

• 5+ years of backend or service test automation, including framework design
• Strong Python and Java; working TypeScript and Node.js
• Hands-on Kafka experience
• Strong SQL and database experience, and hands-on performance and load testing
• Experience building isolated test environments on Linux, containers and AWS, and infrastructure as code
• CI/CD with Azure DevOps or Jenkins and Git
• Clear communication and good documentation

Required skills

• Python: pytest, requests, asyncio, confluent-kafka
• Java: JUnit 5, REST Assured, AssertJ
• TypeScript, Node.js, k6, Playwright
• Kafka, SQL (PostgreSQL, SQL Server), k6, Gatling, JMeter, Locust
• Docker, Docker Compose, Testcontainers, Terraform, CloudFormation or CDK
• Azure DevOps or Jenkins, OpenTelemetry, WireMock, MockServer, Hoverfly