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Software Development Engineer in Test (SDET) - Serbia at OrderMesh. About us . OrderMesh.  is the operating system for modern print-on-demand fulfillment.. We build intelligent order orchestration software that sits at the center of a complex global supply chain — connecting brands, marketplaces, and producers through a single platform. We replace the fragmented legacy systems that the industry has outgrown, with modern, API-first software built for today's scale and speed.. OrderMesh is part of Taylor Corporation, a multi-billion-dollar global leader in print, manufacturing, and technology-enabled services — operating one of the largest production footprints in the world, serving enterprise customers across retail, ecommerce, and beyond.. The best of both worlds — and we mean it.. Most companies say "startup energy with enterprise backing." Few actually deliver it. At OrderMesh, the combination is real:. Startup ownership:.  Small, high-trust teams. Real autonomy over architecture. A direct line between what you build and how it performs in production.. Enterprise foundation:.  Long-term financial stability, SOC 2 compliance, access to global-scale production environments, and deep domain expertise in manufacturing, logistics, and supply chains.. Why now?. We're at an inflection point. The platform already runs real, live production volume — and we're expanding its capabilities, building out new infrastructure, and actively shaping how an entire industry operates. The decisions you make here — technical, architectural, product-driven — will have lasting impact.. This isn't a role where you maintain someone else's roadmap. You'll be building serious software, solving meaningful real-world problems, and doing it with the backing of a world-class organization.. If that's the kind of work you're looking for, OrderMesh is a rare opportunity.. About the Role. As a Software Development Engineer in Test (SDET) at Ordermesh Inc, you will be a key force in evolving our automation-first quality culture across a complex microservices platform (Kafka, NoSQL, REST APIs, async workflows). The role is less about manual gatekeeping and more about building CI-integrated quality pipelines that let developers ship confidently and independently. It's for someone who wants to own the full automation strategy — from build-time testing to real-time quality metrics.. What You’ll Do. Champion an automation-first mindset; manual testing should be the exception, not the rule.. Design, build, and scale automated test frameworks for APIs, UI, and end-to-end microservice validation using Node.js, Playwright, and related frameworks.. Develop load and resilience testing suites with Grafana k6 to benchmark and harden distributed systems.. Integrate test execution and quality gates deeply into GitHub Actions, ensuring every commit, PR, and deployment is validated by automation.. Collaborate closely with MCPs: Kafka event flows, service mesh routing (Istio), and inter-service contracts to design automated validation of message schemas, ACLs, and service dependencies.. Mock endpoints with services like microcks or postman to simulate responses. . Lead TDD adoption by embedding test scaffolds into developer workflows and enforcing test coverage standards across repositories.. Embed security testing and data validation checks into automation frameworks for proactive vulnerability detection.. Create test observability dashboards (via Grafana or Datadog) that expose quality metrics alongside performance and error budgets.. Perform exploratory testing to supplement automation with contextual discovery and edge-case validation.. Collaborate with developers, SREs, and product managers to drive a shared understanding of quality across environments.. 5+ years of hands-on experience building and maintaining automated test frameworks for microservice and web applications.. Strong proficiency in Node.js, JavaScript/TypeScript, or equivalent modern language.. Demonstrated experience integrating tests into CI/CD systems; ideally GitHub Actions, Jenkins, or Azure DevOps.. Proven track record in load testing (Grafana k6) and performance analysis at scale.. Experience validating MCP integrations including: message brokers (Kafka), service meshes (Istio), and REST/gRPC endpoints.. Working knowledge of Playwright or similar browser automation frameworks.. Understanding of TDD, security testing, and DevSecOps principles.. Excellent debugging, observability, and root-cause analysis skills.. Bachelor's degree in Computer Science or equivalent practical experience.. Passion for driving automation-first culture and mentoring others in modern test engineering practices.. Bonus Qualifications. Experience with Azure, Kubernetes, and containerized CI environments.. Familiarity with contract testing frameworks for validating MCP communication.. Experience with Grafana, Datadog, or similar platforms for system and test observability.. Familiarity with B2B, eCommerce, or fulfillment ecosystems. Company Location: Serbia.