11+ Model-based testing Jobs in India

Position: QA Engineer – Machine Learning Systems (5 - 7 years)

Location: Remote (Company in Mumbai)

Company: Big Rattle Technologies Private Limited

Immediate Joiners only.

Summary:

The QA Engineer will own quality assurance across the ML lifecycle—from raw data validation through feature engineering checks, model training/evaluation verification, batch prediction/optimization validation, and end-to-end (E2E) workflow testing. The role is hands-on with Python automation, data profiling, and pipeline test harnesses in Azure ML and Azure DevOps. Success means probably correct data, models, and outputs at production scale and cadence.

Key Responsibilities:

Test Strategy & Governance

• ○ Define an ML-specific Test Strategy covering data quality KPIs, feature consistency
• checks, model acceptance gates (metrics + guardrails), and E2E run acceptance
• (timeliness, completeness, integrity).
• ○ Establish versioned test datasets & golden baselines for repeatable regression of
• features, models, and optimizers.

Data Quality & Transformation

• Validate raw data extracts and landed data lake data: schema/contract checks, null/outlier thresholds, time-window completeness, duplicate detection, site/material coverage.
• Validate transformed/feature datasets: deterministic feature generation, leakage detection, drift vs. historical distributions, feature parity across runs (hash or statistical similarity tests).
• Implement automated data quality checks (e.g., Great Expectations/pytest + Pandas/SQL) executed in CI and AML pipelines.

Model Training & Evaluation

• Verify training inputs (splits, windowing, target leakage prevention) and hyperparameter configs per site/cluster.
• Automate metric verification (e.g., MAPE/MAE/RMSE, uplift vs. last model, stability tests) with acceptance thresholds and champion/challenger logic.
• Validate feature importance stability and sensitivity/elasticity sanity checks (price/volume monotonicity where applicable).
• Gate model registration/promotion in AML based on signed test artifacts and reproducible metrics.

Predictions, Optimization & Guardrails

• Validate batch predictions: result shapes, coverage, latency, and failure handling.
• Test model optimization outputs and enforced guardrails: detect violations and prove idempotent writes to DB.
• Verify API push to third party system (idempotency keys, retry/backoff, delivery receipts).

Pipelines & E2E

• Build pipeline test harnesses for AML pipelines (data-gen nightly, training weekly,
• prediction/optimization) including orchestrated synthetic runs and fault injection
• (missing slice, late competitor data, SB backlog).
• Run E2E tests from raw data store -> ADLS -> AML -> RDBMS -> APIM/Frontend, assert
• freshness SLOs and audit event completeness (Event Hubs -> ADLS immutable).

Automation & Tooling

• Develop Python-based automated tests (pytest) for data checks, model metrics, and API contracts; integrate with Azure DevOps (pipelines, badges, gates).
• Implement data-driven test runners (parameterized by site/material/model-version) and store signed test artifacts alongside models in AML Registry.
• Create synthetic test data generators and golden fixtures to cover edge cases (price gaps, competitor shocks, cold starts).

Reporting & Quality Ops

• Publish weekly test reports and go/no-go recommendations for promotions; maintain a defect taxonomy (data vs. model vs. serving vs. optimization).
• Contribute to SLI/SLO dashboards (prediction timeliness, queue/DLQ, push success, data drift) used for release gates.

Required Skills (hands-on experience in the following):

• Python automation (pytest, pandas, NumPy), SQL (PostgreSQL/Snowflake), and CI/CD (Azure
• DevOps) for fully automated ML QA.
• Strong grasp of ML validation: leakage checks, proper splits, metric selection
• (MAE/MAPE/RMSE), drift detection, sensitivity/elasticity sanity checks.
• Experience testing AML pipelines (pipelines/jobs/components), and message-driven integrations
• (Service Bus/Event Hubs).
• API test skills (FastAPI/OpenAPI, contract tests, Postman/pytest-httpx) + idempotency and retry
• patterns.
• Familiar with feature stores/feature engineering concepts and reproducibility.
• Solid understanding of observability (App Insights/Log Analytics) and auditability requirements.

Required Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Information Technology, or related field.
• 5–7+ years in QA with 3+ years focused on ML/Data systems (data pipelines + model validation).
• Certification in Azure Data or ML Engineer Associate is a plus.

Why should you join Big Rattle?

Big Rattle Technologies specializes in AI/ ML Products and Solutions as well as Mobile and Web Application Development. Our clients include Fortune 500 companies. Over the past 13 years, we have delivered multiple projects for international and Indian clients from various industries like FMCG, Banking and Finance, Automobiles, Ecommerce, etc. We also specialise in Product Development for our clients.

Big Rattle Technologies Private Limited is ISO 27001:2022 certified and CyberGRX certified.

What We Offer:

• Opportunity to work on diverse projects for Fortune 500 clients.
• Competitive salary and performance-based growth.
• Dynamic, collaborative, and growth-oriented work environment.
• Direct impact on product quality and client satisfaction.
• 5-day hybrid work week.
• Certification reimbursement.
• Healthcare coverage.

How to Apply:

Interested candidates are invited to submit their resume detailing their experience. Please detail out your work experience and the kind of projects you have worked on. Ensure you highlight your contributions and accomplishments to the projects.

🚀 We're Hiring: Senior Backend Developer | Gurugram (On-site)

Looking to work with a fast-growing, tech-driven team in the SaaS space?

We’re on the lookout for a Senior Backend Developer with 2–3+ years of experience to help us build robust and scalable solutions.

🎯 What We're Looking For: ✅ Strong hands-on experience with Node.js & React

✅ Proficient in AWS (EC2, S3, Lambda, etc.)

✅ Good knowledge of MySQL

✨ Bonus: Exposure to AI/ML technologies

🏢 Preferred Industry Background: SaaS

📍 Location: Candidate should be from Delhi NCR

💰 Budget: Up to 11 LPA

If you're passionate about backend systems and want to make an impact in a high-growth environment, let’s connect!

Job Title: React Native Developer

Experience: 2+ Years

Location: Bangalore, India

Elocity is a cleantech start-up striving to make the world a better place through technology innovations. We

are building a global infrastructure for making the transition to electric vehicles viable, affordable, and

sustainable by working closely with the utilities, governments, and public.

Headquartered out of Canada, we are a team of highly specialized domain experts and problem solvers

enabling utilities, public and private sector entities to successfully manage the demands of electric vehicle

charging and its infrastructure needs to pave the way for electromobility in future.

To know more visit https://elocitytech.com/

Job Summary

We are looking for a React / React Native senior developer interested in building performant mobile apps on

both the iOS and Android platforms. Your primary focus will be on developing user interface components and

implementing them following well-known React Native frameworks. You will ensure that these components

and the overall application are robust and easy to maintain. You will coordinate with the rest of the team

working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving,

sophisticated design, and a quality product are important.

Key Responsibilities include, but are not limited to:

* Build pixel-perfect, buttery smooth UIs across both mobile platforms.

* Ensure the best possible performance, quality, and responsiveness of the mobile applications * Good

understanding of Design and Architecture Patterns

* Maintain code and write automated tests to ensure the product is of the highest quality.

* Familiarity with native build tools, like XCode, Gradle (Android Studio, IntelliJ).

* Experience in native Android / iOS app development is preferable.

* Individuals who would connect best with the job requirements are those who:

    - Are excited to be part of a young, dynamic team that is building a disruptive, sustainable business 

    - Are willing to go the extra 100 miles it takes to win in a super competitive market.

    - Are innovative, resourceful and comfortable with dynamic business requirements

* Fulfil below minimum criteria:

    - 2+ years' experience in React-Native based app development

    - 1-2 years' experience in Mobile app development (React-Native + Android/iOS). 

    - Hands on experience in Redux

Qualifications & Skills:

• Bachelor's degree in Computer Science or related fields with 3+ years of experience

• 2+ years of native Android/iOS development

• Constantly learning and looking for ways to improve yourself and the processes around you.

• Deep knowledge of scalability, security, and maintainability of high-volume mobile applications

• Should have mobile testing experience with strong basics, understand about the mobile OS and

excellent debugging skills.

• Strong analytical, problem-solving, leadership and decision-making skills

• Sharp analytical abilities, proven design skills, excellent communication skills.

• Mentoring and supporting other team members by doing code reviews and applying your experience

in process and technical leadership.

• Must be able to handle the independent execution.

We are looking for a Laravel developer with the technical skills to implement server-side code written in the Laravel framework. Your main responsibility lies in the development and implementation of applications written in PHP laravel .

Responsibility :

• Design and implement web applications that use the Laravel framework.
• Implement server side logic to process front inputs.
• Identify and fix bugs that are found within code.
• Interact with SQL databases.
• Ensure all inputs going to a database have been parameterized.
• Ensure the appropriate security standards have been implemented.
• Troubleshooting issues in the implementation and debug builds.
• Maintaining web-based applications.
• Presenting work in meetings with clients and management.

Desired Skill Set:

• The ability to problem-solve and critically think.
• High level of knowledge of PHP and the Laravel framework
• Web Development Skill.
• Understanding of OOP & MVC pattern.
• Understanding of SQL databases.
• The desire and ability to learn.
• Good interpersonal skills.

Responsible for managing + executing content for social media platforms like Instagram, LinkedIn, YouTube, etc.

Build and execute social media marketing strategies.

Working with our marketing team to design and create the campaign test to communicate the results to using the data to inform future business decisions.

 Collaborate with other departments (marketing, video team, etc.) to create engaging social media content (Stories, posts, reels, etc).

 Planning, Creation, and Publishing of Instagram Reels.

 Managing ORM of IIDE s Social Media.

 Creating the entire campaign, shooting it out, monitoring it, and analyzing it.

 Measure output and revise social media strategies from time to time.  Takedown any other activities from your reporting manager as and when required.

 Flexibility and willingness to go beyond the call of duty (a go-getter).  Required Experience and Qualifications:  Basic Shooting skills using the phone

 Basics of Adobe design & Video tools - Illustrator, Photoshop & Premiere Pro

About Apexon:

Apexon is a digital-first technology services firm specializing in accelerating business transformation and delivering human-centric digital experiences. For over 17 years, Apexon has been meeting customers wherever they are in the digital lifecycle and helping them outperform their competition through speed and innovation. Our reputation is built on a comprehensive suite of engineering services, a dedication to solving our clients’ toughest technology problems, and a commitment to continuous improvement. We focus on three broad areas of digital services: User Experience (UI/UX, Commerce); Engineering (QE/Automation, Cloud, Product/Platform); and Data (Foundation, Analytics, and AI/ML), and have deep expertise in BFSI, healthcare, and life sciences.

Apexon is backed by Goldman Sachs Asset Management and Everstone Capital.

To know more about us please visit: https://www.apexon.com/

About the role:

• Experience: 7+ years of experience building modern web applications working in the fullstack
• Proficiency in TypeScript and JavaScript with a thorough understanding of React.js or Vue.js and their core principles preferred
• Implementing RESTful APIs using .Net/C# preferred with experience with .Net Core, .Net 5 or 6 a bonus!
• Experience with SQL and relational database design with MS SQL Server experience is added advantage
• Experience with NoSQL/document database technologies
• Experience writing automated unit tests in the full stack environment
• Knowledge of modern authentication and authorization mechanisms
• Familiarity with modern front-end and backend build pipelines and tools
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Experience with modern responsive web application design & development Familiarity with Node.js
• Experience with microservice architecture
• Experience using Git version control
• Experience with VS Code, Visual Studio, or other relevant development tools
• Familiarity with Scrum/Agile principles
• Strong communication skills
• Ability to understand business requirements and translate them into technical requirements.
• 
  

Required skill set:

• Candidate must be good in JavaScript and have experience in at least one modern JavaScript framework such as Vue/Angular/React. But must be willing to work in Vue/React.
• Must have experience in .NET Framework. Good to have experience in .NET Core/.NET 5/6/7. But must be willing and capable enough to learn .NET Core.
• Should be able to work independently with minimum supervision.
• Must be good in programming concepts such as OOPS, Unit Tests, Web API, SQL, etc