Loading job details…
Chakrie never asks for money to apply. Report any employer who does.
• Strong hands-on expertise of 3-5+ years with gRPC-Web, Proto3, HTTP/2, and JSON-RPC/REST protocols
• Proficiency with proxy/traffic inspection tools including Mitmproxy, Charles Proxy, and browser DevTools
• Solid scripting/programming skills in Python, with practical use of Postman and cURL for API automation
• Experience designing and maintaining automated test suites for middleware or API-layer services
• Working understanding of API request structure, including headers, auth tokens, and internal/system parameters, and how to test for their correct handling
• Understanding of software engineering practices as applied to test automation (version control, CI integration, code review)
• Strong debugging skills at the network/protocol level
• Experience analysing browser-generated network traffic and reconstructing API behaviour is strongly preferred
• Experience with HAR analysis, API schema reconstruction, or controlled API replay is strongly preferred
• Ability to work within approved staging/test environments and follow defined data-handling and test-authorization requirements is required
#L1-CC1
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 (with the possibility of full time employment based on performance and project needs in all opportunity)
How to Apply?
Apply now by answering a few quick questions to join our database and become part of our growing community.
We can’t wait to meet you!
About Welo Data
Welo Data, part of Welocalize, is a global AI data company with 500,000+ contributors delivering high-quality, ethical data to train the world’s most advanced AI systems. We’re building smarter, more human AI with a diverse community in 100+ countries.
At Welo Data, Limitless AI. Limitless You. isn’t just a slogan—it’s our promise. We build smarter AI through the power of human contribution, offering limitless opportunities for our global community to grow, contribute, and work on their terms.
• 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 and maintain API automation scripts using Python, Postman, and cURL for functional and regression testing
• Analyze protocol-level request/response behavior to identify defects related to serialization, encoding, and transport
• Inspect and validate request payload structure, including system-level headers (e.g., auth tokens, routing identifiers) and internal/hidden parameters, ensuring correct handling under both valid and malformed conditions
• Collaborate with backend and middleware engineers to define testable contracts and edge-case scenarios
• Continuously improve test automation frameworks for reliability, speed, and maintainability
• Document technical findings, automation coverage, and known protocol-level limitations
Other benefits are as per company policy.
Work from home
Freelance
India
Applications for this job are handled on the company's own website.
এই চাকরির জন্য বিজ্ঞাপনদাতা ব্যক্তি/প্রতিষ্ঠান আপনার কাছ থেকে কোন অর্থ চাইলে কিংবা নিয়োগ প্রক্রিয়া চলাকালীন কোন প্রকার হয়রানিমূলক (শারীরিক/মানসিক) আচরণ করলে অতিসত্বর আমাদেরকে জানান অথবা জবটি রিপোর্ট করুন। চাকরি পাওয়ার জন্য কোন ব্যক্তি/প্রতিষ্ঠানকে অর্থ প্রদান করবেন না। চাকরিকালীন কোন প্রকার হয়রানির (শারীরিক/মানসিক) সম্ভাবনা থাকলে সেখানে জয়েন করবেন না। কোন প্রকার অর্থ লেনদেন বা নিয়োগদাতা কর্তৃক হয়রানির দায়িত্ব Chakrie বহন করবে না।
Tell us at once if the advertiser asks you for money, or behaves in any harassing (physical or mental) way during hiring — or report the job. Never pay anyone to get a job. Do not join anywhere you see a risk of harassment. Chakrie takes no responsibility for money changing hands, or for harassment by an employer.
