Digital Marketer

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.

.NET Core Backend Developer (API Developer)

📍 Location: Gr. Noida | 💼 Type: Full-time | 💰 Experience: 2–5 years

We’re hiring a .NET Core Backend Developer skilled in API development and WebSocket-based real-time communication. You’ll work on building scalable, secure, and high-performance backend systems with cloud integration.

🔧 Responsibilities

• Develop and maintain RESTful APIs using ASP.NET Core (C#)
• Build WebSocket / SignalR modules for real-time updates
• Work with EF Core / Dapper / SQL Server for backend data operations
• Implement JWT / OAuth2 authentication
• Create background worker services for sync and notifications
• Manage Azure App Services, Queues, and CI/CD pipelines

💡 Skills Required

• .NET Core / ASP.NET Core Web API
• WebSocket / SignalR
• C#, EF Core, LINQ, Dapper
• SQL Server / MySQL
• JWT, OAuth2, Swagger, Postman
• Azure Cloud, CI/CD, Git, Microservices

🚀 Nice to Have

• Experience with Docker / Kubernetes / RabbitMQ
• Familiarity with frontend integration (React/Angular)
• 
  

#DotNetCore #BackendDeveloper #APIDeveloper #Hiring #CSharp #EntityFramework #TechJobs

7+ years of experience in Python Development

Good experience in Microservices and APIs development.

Must have exposure to large scale data

Good to have Gen AI experience

Code versioning and collaboration. (Git)

Knowledge for Libraries for extracting data from websites.

Knowledge of SQL and NoSQL databases

Familiarity with RESTful APIs

Familiarity with Cloud (Azure /AWS) technologies

About Wissen Technology:

• The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015.

• Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains. We help clients build world class products.

• Our workforce consists of 550+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world.

• Wissen Technology has grown its revenues by 400% in these five years without any external funding or investments.

• Globally present with offices US, India, UK, Australia, Mexico, and Canada.

• We offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.

• Wissen Technology has been certified as a Great Place to Work®.

• Wissen Technology has been voted as the Top 20 AI/ML vendor by CIO Insider in 2020.

• Over the years, Wissen Group has successfully delivered $650 million worth of projects for more than 20 of the Fortune 500 companies.

We have served client across sectors like Banking, Telecom, Healthcare, Manufacturing, and Energy. They include likes of Morgan Stanley, MSCI, StateStreet, Flipkart, Swiggy, Trafigura, GE to name a few.

Website : www.wissen.com

We are seeking enthusiastic individuals to join our team as Customer Care Executives for both Voice and Sales processes. As a Customer Care Executive, you will be responsible for addressing customer inquiries, resolving issues, and promoting our products/services to potential customers.

*Qualifications:*

- Minimum educational qualification: 12th pass.

- Age between 18 to 30 years.

- Excellent communication skills in English and Hindi

- Ability to handle customer queries and provide appropriate solutions.

- Prior experience in customer service or sales is preferred but not mandatory.

*Responsibilities:*

- Handle inbound/outbound calls professionally and provide information about products/services.

- Identify customer needs, clarify information, and close sales.

- Maintain a high level of customer satisfaction through effective problem-solving.

- Achieve sales targets and goals as set by the company.

*Salary and Benefits:*

- Starting salary of INR 18,000 per month.

- Performance-based incentives and bonuses.

- Comprehensive training and career development opportunities.

1.Pre-Flight Inspection:

● Conduct thorough pre-flight checks on the drone, including battery levels, sensors, propellers, and GPS calibration.

● Ensure all firmware and software are up to date for both the drone and remote controller.

● Verify that the drone is in optimal operating condition, including payload attachments, if applicable.

2.Flight Planning:

● Plan the flight route based on mission objectives, considering factors like altitude, weather conditions, and airspace regulations.

3.Safe and Efficient Flight Operations:

● Monitor drone telemetry data during flight (e.g., battery level, GPS signal, altitude, and speed).

● Ensure real-time communication with ground personnel and provide situational updates as necessary.

4.Emergency Procedures:

● Be prepared to handle emergencies such as low battery, lost GPS signal, or malfunctioning sensors.

● Execute safe and controlled emergency landings if required.

5.Post-Flight Data Handling:

● Safely retrieve the drone and perform a post-flight inspection, checking for any damage or malfunctions.

● Offload data collected during the flight, ensuring secure storage and proper labeling.

● Provide a detailed flight report, documenting any issues, flight conditions, and mission outcomes.

Minimum Requirement’s :

● must be 18+

● Must have at least 50hrs Flying experience.

● Should have knowledge of basic photography to handle camera settings for manual mode.

● Should have good smooth hand manipulation control with camera moments.

● Can keep his control calm in panic situations.

● A drone pilot should be familiar with drone hardware and software, including drone flight controls, GPS systems, and camera setups.

● Can take rapid decisions (depending on situations)

Flutter Developer

Instrive is a Chennai-based start-up that provides high-quality Dev-ops solutions for clients worldwide. In this increasingly digital world, we strive to solve problems and create value. Instrive was founded with one goal in mind, creating high-quality products and delivering great user experiences worldwide.

A number of products are being developed for both in-house purposes and for our overseas clients, and we are actively expanding our team of talented professionals.

As part of our ambitious product roadmap, we need flutter developers for our team.

Your primary responsibility will be to develop flutter applications both (mobile and web) with a heavy focus on real-time communication such as WebRTC, web sockets etc. 

You'll make a meaningful impact and create lasting connections with our outstanding team, no matter where your career takes you.

Responsibilities:

• Develop, test, and deploy fast and scalable Mobile, Web and Desktop apps.
• Lead the development of flutter applications.
• Identify production and non-production application issues as a part of deployment.
• Establish, refine and integrate development environment tools and software as needed.
• Building future-proof front-end libraries and reusable widgets.
• Knowledge in coding architecture.
• Collaboration with the IT team, researchers, and designers to design robust apps and encourage business goals.
• Create Unit and Integration tests to ensure the quality of code.
• Testing applications and fixing bugs, along with security and data protection features.
• Participate with developers in the integration of REST APIs.
• Conducting code reviews of peer developers.

Flutter Developer Requirements:

Technical Skills:

• Bachelor’s degree in computer science, computer engineering, or similar.
• Previous work experience as a Flutter developer for a minimum of 3 years.
• Strong hands-on experience with MBaaS systems such as Firebase.
• Must have strong knowledge in MVC and/or MVVM framework.
• An understanding of DART and its core principles.
• Knowledge of GIT, JSON, design framework and web services.
• Good understanding in State management, such as BLOC / GetX
• A robust understanding of MUI and how best to use the inbuilt functionality provided.
• A hands-on understanding of how to create responsive designs.
• An excellent understanding of emerging trends in visual design and user experience.
• Experience in application architecture and publishing apps.
• Understanding Agile methodologies, client-side and server-side procedures. 

Good to have:

• Experience in native Android/IOS app development.
• Knowledge of HTML5 and its best practices.
• Cloud technology knowledge is a plus.
• Figma experience is a plus.

Soft Skills:

• Good communication skills.
• Critical thinking and time management.
• Good team player.
• Strong problem-solving and analytical skills.
• Collaboration to support business goals.
• Competence for individual contribution.

• Helping in building of Business Development decks & sales pitches
• Supporting in organizing PR initiatives
• Scoping of prospective investor network

Desired Candidate Profile

• MBA (General or Marketing or related) preferred
• 1+ years of experience in Strategy, Marketing, PR or CEO/Founders’ office teams
• Non-MBAs with 3+ years of experience in related fields can also apply