---
title: 'Senior SDET – (India) at Welo Global'
canonical: 'https://feeny.ai/job/senior-sdet-india-welo-global-india-bqm0dy20kgwv'
type: 'job'
last_seen: '2026-10-12'
---

# Senior SDET – (India) at Welo Global

- **Company:** Welo Global
- **Location:** India
- **Employment:** freelance
- **Work type:** remote
- **Posted:** 2026-09-28
- **Last confirmed live:** 2026-10-12
- **Apply:** https://jobs.lever.co/weloglobal/64a77c00-bb9e-4542-b3cf-8c9d80bea31d

## Job description

## Overview

We are looking for a Senior SDET to test the resilience and correctness of distributed backend systems supporting a high-stakes account provisioning and onboarding workflow. This role is focused on the execution of pre-approved, benign tracer/replay scenarios against staging endpoints, analysis of request/response behavior, and documentation of observable account/CID lifecycle and downstream state behavior. The ideal candidate has strong distributed-systems and API-testing experience and maintains disciplined technical evidence capture and traceability. This role is not intended to perform unrestricted adversarial testing. Testing activities will be limited to approved staging environments and pre-approved benign scenarios.

Project Details

- Title: Senior SDET
- Rate: $13.5/hr
- Start Date: 19 October
- Duration: 5 Weeks
- Commitment: 33 Hours per Week
- Location: India (Remote)
- Job Type: Freelance (with the possibility of full-time employment based on performance and project needs)

## Responsibilities

- Analyze distributed system APIs to validate correctness, consistency, and failure handling across services involved in account creation, data persistence, and related record-linking
- Execute pre-approved request variations and boundary-validation scenarios using sanitized tracer payloads against designated staging endpoints
- Investigate system behavior under malformed, malicious, or unexpected inputs and document findings clearly
- Capture complete request/response evidence, including HTTP status codes, latency, headers, and payload bodies, subject to approved data-handling requirements
- Validate behavior of near-real-time inline checks (evaluated within milliseconds at the gateway) as distinct from longer-running background verification/risk pipelines (evaluated over minutes to hours), confirming each layer of defense behaves as expected
- Verify data persistence, referential integrity, and correct linkage of related records/relationships written by backend services during processing
- Execute controlled replay suites and compare expected versus observed API behavior
- Correlate replay results with the API schemas and network evidence produced by the Middleware SDET
- Document observable account/CID lifecycle behavior and downstream state changes for handoff
- Capture and archive test logs and evidence in a structured, retrievable format to support audits and post-incident reviews
- Collaborate with backend engineering teams to reproduce, isolate, and validate fixes for distributed-system defects
- Contribute to test strategy for backend/middleware reliability, including failure-mode and chaos-style testing
- Maintain traceability between test evidence, defects, and system requirements
- Reconcile backend observations with the frontend FSM and middleware/API evidence produced by earlier workstreams

Required Qualifications

- Strong experience of 5-8+ years in testing distributed systems and analyzing inter-service API behavior
- Hands-on experience with request payload tampering, fuzzing, or adversarial API testing techniques
- Understanding of layered defense architectures, including the distinction between synchronous/inline validation and asynchronous/background verification processes
- Familiarity with testing data persistence and relational/hierarchical integrity in backend data stores
- Demonstrated discipline in test log archival, evidence capture, and structured documentation practices
- Solid understanding of backend/middleware architecture, failure modes, and system boundaries
- Familiarity with API testing tools and scripting for building custom fuzzing/tampering test cases
- Strong analytical and investigative skills for root-causing complex, systemic defects
- Experience executing controlled API replay or staging validation is strongly preferred
- Experience correlating API responses with observable application/account lifecycle states is preferred
- Experience supporting audit, compliance, or evidence-based reporting requirements is a plus

#L1-CC1

Why join Welo Data? ✨ Limitless Flexibility: Work on projects that fit your schedule while collaborating with a global leader in AI data services and localization. 🌱 Limitless Growth: Apply your skills, access diverse content types, develop through structured learning, and explore career paths that can lead to permanent roles. 🌍 Limitless Support: Be part of a global community with real-time assistance from our Community Experience team.

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.

## About Welo Global

## Company Overview
- **One-liner**: Welo Global delivers enterprise localization, AI training data, multilingual content, and intellectual property solutions through a portfolio of specialized global brands.
- **Entity Type**: Private (Privately Held)
- **Headquarters**: Not publicly available (global operations across multiple countries)
- **Founded**: Not publicly available (earliest known employee joined in 2002)
- **Founders**: Not publicly available

## Core Business
- **Primary industries**: Language Services, Localization, AI Training Data, Intellectual Property, Digital Marketing, Life Sciences
- **Target customers**: B2B – enterprise localization teams, AI/ML labs, law firms and corporate legal departments, pharmaceutical and medical device companies, global marketing teams
- **Mission or purpose**: To help organizations operate and scale globally by combining human expertise with advanced AI and technology, while fostering sustainability and inclusion.

## Products & Services
For each major offering:
- **Welocalize**: AI-enabled multilingual content and localization solutions for enterprises, powered by the Opal Platform (an agentic system orchestrating AI, automation, and human expertise). Serves localization teams in 300+ languages.
- **Welo Data**: Multilingual data generation, evaluation, and human data infrastructure for AI systems. Provides a network of 500,000+ vetted experts and a proprietary quality framework (NIMO™). Supports foundation labs and enterprises deploying GenAI.
- **Park IP**: Global IP solutions for law firms and corporate legal departments, including patent translation, foreign filing, and litigation support. Uses the Legal Studio platform for portfolio management.
- **Welo Life Sciences**: Specialized language solutions for highly regulated industries (clinical trials, pharmaceuticals, medical devices). Includes translation, linguistic validation, and regulatory content services.
- **Adapt**: Multilingual digital performance marketing agency. Offers paid search, SEO, programmatic, paid social, and content marketing. Uses Adapt Studio, a translation platform built for marketers.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Serves over 2,000 clients in 300+ languages; employs a network of 500,000+ linguists and domain experts
- **Notable Investors/Partners**: Not publicly available (private company)
- **Growth Signals**: 
  - Holds 7 ISO certifications (including ISO 14001 for environmental management)
  - Voluntarily discloses carbon emissions (Scope 1, 2, 3)
  - Actively expanding AI training data and GenAI evaluation services
  - LinkedIn reports 35 employees (likely corporate HQ), while the careers page lists over 1,500 corporate jobs globally – indicating a much larger workforce

## Competitive Advantages
- **Portfolio of specialized brands** – each brand targets a distinct, regulated vertical with deep expertise and fit-for-purpose technology.
- **Massive global network** – 500,000+ vetted linguists and domain experts across 300+ languages.
- **AI-first technology** – Proprietary platforms (Opal, NIMO, Adapt Studio, Legal Studio) that integrate generative AI, automation, and human judgment.
- **Compliance and security** – 7 ISO certifications (including ISO 14001) and a strong focus on data security, ethical AI, and sustainability.
- **Longevity and scale** – Established over 20 years with a track record of serving Fortune 500 and Am Law 100 clients.

## Strategic Focus
- **AI training data and evaluation** – Growing its Welo Data brand to support foundation labs and enterprises deploying GenAI, with a focus on safety, bias mitigation, and cross-lingual reliability.
- **Product-led innovation** – Enhancing the Opal Platform and other agentic systems to automate multilingual content workflows.
- **Sustainability** – Maintaining ISO 14001 certification, voluntarily reporting carbon emissions, and expanding the Give Grant program for employee-selected charities.
- **Global scalability** – Continuing to build a diverse, remote-friendly workforce across 8+ countries.

## Why Work Here
- **Remote-first culture** – Many positions are work-from-home; the company emphasizes global teamwork and flexibility.
- **Diversity and inclusion** – “Come as you are” motto; active Give Grant program for employee-funded donations; commitment to hiring a diverse workforce.
- **Sustainability focus** – ISO 14001 certified, with voluntary carbon disclosure and environmental initiatives.
- **Career growth** – Opportunities across 1,500+ corporate roles worldwide in localization, AI, technology, marketing, and legal services.
- **Learning environment** – Continuous learning encouraged; access to cutting-edge AI and multilingual technologies.

## Sources
1. [weloglobal.com](https://www.weloglobal.com/company/)
2. [weloglobal.com](https://www.weloglobal.com/company/careers/)
3. [weloglobal.com](https://www.weloglobal.com/portfolio/)
4. [linkedin.com](https://www.linkedin.com/company/welo-global)
5. [jobs.lever.co](https://jobs.lever.co/weloglobal)

## Other roles at Welo Global

- [Bilingual Metadata Specialist (India)](https://feeny.ai/job/bilingual-metadata-specialist-india-welo-global-india-3ejjkhhhgn98) — India
- [MSR Project - Chinese Culture Expert](https://feeny.ai/job/msr-project-chinese-culture-expert-welo-global-australia-vv818ry2d2zx) — Australia
- [MSR Project - English (United Kingdom) Culture Expert](https://feeny.ai/job/msr-project-english-united-kingdom-culture-expert-welo-global-united-kingdom-x6093d7n8058) — United Kingdom
- [Hindi Content Specialist](https://feeny.ai/job/hindi-content-specialist-welo-global-united-states-sgqj8ccdgpws) — United States
- [English to Estonian Review Lead for UI, Marketing & Product Content](https://feeny.ai/job/english-to-estonian-review-lead-for-ui-marketing-product-content-welo-global-57da7n9zxjpa) — Global
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