SDET (API/Middleware)

Job Overview

Welo Global is hiring an SDET (Software Development Engineer in Test) to bring deep technical rigor to middleware-layer testing. This role requires strong technical expertise across gRPC-Web, Proto3, HTTP/2, JSON-RPC/REST, proxy-based traffic inspection, and API scripting. The primary responsibility is to observe and reconstruct the network interactions generated by the onboarding UI, including request/response structures, schemas, headers, identifiers, Enums, and client-injected parameters. This is primarily an API/network analysis and evidence-generation role rather than a conventional UI automation or regression-testing role. The resource will produce sanitized network evidence and controlled, benign tracer replay scripts for downstream backend validation.

Project Details

Title: SDET - API/Middleware Rate: $9.50/hr Start Date: 19th October Duration: 5 Weeks Commitment: 35 Hours per Week Location: India (Remote) Job Type: Freelance

Responsibilities

• Design, build, and maintain automated API test suites covering gRPC-Web, Proto3, HTTP/2, and JSON-RPC/REST based services • Export clean, sanitized HAR/network evidence while maintaining traceability between UI actions and corresponding network requests. • Map relevant schemas, headers, identifiers, routing information, and client-injected parameters. • Use proxy tools such as Mitmproxy, Charles Proxy, and browser DevTools to inspect, intercept, and validate network traffic between client and server • Develop…