Senior Python Developer
Experience: 4–8 Years
About the Role
We are looking for a Senior Python Developer Engineer to join our team. This role focuses on building and maintaining data-intensive backend systems, handling large-scale datasets, and exposing insights through robust, scalable APIs.
You will work closely with operational and transactional data, design efficient data pipelines, and build backend services that power analytics, reports, and ERP workflows. The ideal candidate is strong in Python, excellent with data and databases, and capable of owning features end-to-end.
Key Responsibilities
- Analyze large datasets to identify trends, inconsistencies, and operational insights.
- Design, build, and maintain backend services and REST APIs using Python and FastAPI.
- Perform advanced data manipulation and aggregation using Pandas, NumPy, and SQL.
- Design and optimize data pipelines for analytics, reporting, and downstream systems.
- Implement automated data quality checks, validations, and monitoring scripts.
- Work closely with product, application, and business teams to translate raw data into clear, actionable outputs.
- Optimize query performance across relational and analytical databases.
- Expose processed data and insights via APIs or dashboards for consumption by web or ERP applications.
- Ensure high standards of code quality, performance, scalability, and maintainability.
- Write clear documentation for APIs, data flows, and processing logic.
Required Skills & Qualifications
- 4–8 years of strong, hands-on experience with Python in production systems.
- Excellent experience with data handling, processing, and large datasets.
- Strong experience building APIs using FastAPI (or similar frameworks).
- Deep expertise in Pandas, NumPy, and SQL.
- Solid experience with MySQL and PostgreSQL.
- Experience working with analytical or reporting workloads.
- Strong understanding of data modeling, joins, aggregations, and performance tuning.
- Proficiency with Git and collaborative development workflows.
- Strong analytical and problem-solving skills with the ability to work independently.
Good to Have
- Experience with ClickHouse, Databricks, or Elasticsearch.
- Exposure to data engineering concepts such as ETL/ELT, batch processing, and data pipelines.
- Experience with workflow orchestration tools (Airflow, Prefect, Dagster).
- Familiarity with data visualization libraries (Plotly, Matplotlib, Seaborn).
- Experience with AWS services (S3, EC2, RDS, Lambda).
- Prior experience integrating data services into ERP or business applications.
Soft Skills
- Strong analytical mindset and attention to detail.
- High ownership and accountability.
- Ability to work independently with minimal supervision.
- Clear communication and documentation skills.
- Proactive, solution-oriented approach.

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Location: Marol, Andheri East, Mumbai
Company: Big Rattle Technologies Private Limited
Open for candidates from Mumbai only. Immediate Joiners only.
Summary:
We are looking for a passionate and skilled PHP Laravel Developer to join our growing team. You will be responsible for developing and maintaining high-quality web applications while adhering to best coding and security practices.
Key Responsibilities:
- Write clean, scalable, and well-documented code.
- Debug, test, and fix issues in existing applications.
- Ensure code quality, performance, and security by following industry standards.
- Manage code repositories and handle deployments.
- Contribute to all phases of the software development lifecycle.
- Collaborate with team members and participate in client meetings/calls.
- Stay updated with new technologies and continuously improve your technical skills.
Required Skills (hand-on experience in the following):
- Languages & Frameworks: PHP, Laravel
- Frontend: HTML5, CSS3, JavaScript, AJAX/Fetch, jQuery
- Database: MySQL
- MVC architecture, Design Patterns, Authentication, Eloquent ORM, Providers, Middleware, Supervisor, Cron Jobs
- API integration and Web Services (REST, JSON, etc.)
- Postman for API testing
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Required Qualifications:
- Bachelor’s degree in computer science, Engineering, or related field OR equivalent practical experience.
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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:
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- 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.
What you’ll do here:
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What you will need to thrive:
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•Strong proficiency in Python (preferred), C# .NET, or C/C++.
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Around 4 years of experience in creating and implementing Web-based products using PHP,
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Expert in HTML, CSS, JavaScript, JQuery, JSON.
Experience in any PHP framework Laravel, CodeIgniter or Zend.
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Understanding of UI, cross-browser compatibility and web standards.
Good English communication skills, written and spoken.
Able to work with minimum supervision as well as perform under pressure and meet
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Developing and Designing in Node.js, HTML5, CSS3, MySQL.
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Applying SDLC principles when working with or leading a team of developers.
Needs to create mobile and web applications
Responsible for the creation and implementation of a wide variety of mobile and Web-based
Products using Node.js, JavaScript, MySQL, and AJAX.
Troubleshoot, test, and maintain the core product software and databases to ensure strong
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Should have knowledge of angularJS
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- Understanding on how to use a database like Postgres (prefered choice), SQLite, MongoDB, MySQL.
- Sound knowledge of object-oriented design and analysis.
- A strong passion for writing simple, clean and efficient code.
- Proficient understanding of code versioning tools Git.
Experience:
- Min 5 year experience
- Startup experience is a must.
Location:
- Remote developer
Timings:
- 40 hours a week but with 4 hours a day overlapping with client timezone. Typically clients are in California PST Timezone.
Position:
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- We dont believe in locking in people with large notice periods. You will stay here because you love the company. We have only a 15 days notice period.
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- Strong understanding of application server infrastructure
- Good working knowledge of Maven-based build systems
- Good understanding of build and deployment pipelines that involve ANT and Jenkins
- Proficient understanding of code versioning tools, such as Git or SVN
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