Node.JS Developer

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.

Viha Technosoft - building tech products that matter to people

At Viha Technosoft, we’re a happy family of 50+ young and experienced talents. We work in Media and Entertainment (M&E)t, Healthcare, and Payments domains.

We’re looking for a competent individual to help develop a scalable backend system for our project Cast India.With Cast India, We’re out to revolutionize the way people onboard, train, and get opportunity in M&E domain.

• Must-Have Skills

  • Strong knowledge of any PHP web framework Codeigniter, Laravel, CakePHP, Yii, Symfony, etc along with strength in OOPS
  • Understanding of MVC design patterns
  • Working experience with any Payment Gateways is desirable. Experience with REST-based API Development is a must
  • Experience with front-end technologies, such as JavaScript, HTML5, and CSS frameworks along with Angular 6+ and ReactJS
  • Confident with Mysql database, framing complex queries for optimum performance
  • Good knowledge of Javascript, Json, Jquery, Ajax

  Additional Skills

  • Hands-on experience working on Microservices development
  • Integration of multiple data sources and databases into one system

  Build and hosting experience

  • Must have a strong DevOps experience
  • Exhibited CI/CD experience with Jenkins tools and plugins.
  • Strong experience in auto-deployment, deployment testing, and overall automated pipeline management.
  • Good to have knowledge of Cpanel, FileZilla, Docker, and Kubernetes
  • Must have a strong experience with source control tools like GitHub

  Testing

  • Must have strong advanced Unit testing experience and Agile experience
  • Must have strong working experience in agile
  • Must have participated in SCRUM and must be well aware of the scrum ceremonies
  • Must be able to self-manage the pipeline and should be well prepared to meet challenging timelines

  MySQL competency

  • Must be able to write complex queries
  • Understanding and implementation level knowledge of key joins, constraints, and triggers
  • Able to analyze the query and perform query optimization
  • Independently handle the Table DDL and DML statements as part of the development
  • Ability to create ER diagrams and data mapping diagrams and document data entity chang

 2+ years experience as a developer with a proven track record in on-time and successful deliveries.

- Must be highly proficient in NodeJS, Javascript and MySQL with Microservices (REST web services )

- Work end to end on micro-services and SPAs built on cutting-edge technologies like Nodejs (Strong practical experience preferred)

- Strong knowledge of database & web applications.

- Preferred : grunt, wagner, npm, passport, redix, chai

- Excellent problem solving and communication skills, so that you are able to articulate technical concepts to the team, also excellent development, and debugging skills

- Ability to learn, act, and thrive in a fast-paced environment with a distributed team

Duties & Responsibilities :

- Should be taking requirements to design and building reusable modules.

- Building, scaling and performance tuning.

- Advance understanding of front-end technologies, such as HTML5 and CSS3.

- Advance understanding in AWS, NPM (Node JS Package Manager), GIT and Unit testing.

- Strong work experience in Design Patterns and Algorithms.

- Experience with debugging, troubleshooting and problem-solving issues.

- Must have strong communication skills.

You will be responsible for developing features on the application and integrations end to end. You will be working closely with the Technical Team to come up with high-quality, resilient, and highly performant applications.

• Design and develop SaaS-based applications based on microservices architecture.
• Work on the core backend and ensure it meets the performance benchmarks.
• API and Integrations.
• Designing and developing APIs for the front end to consume.
• Constantly improve the architecture of the application by clearing the technical backlog.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.
• Work on the front end with ReactJS is a plus point.

• An enthusiastic individual with the following skills. We are open to promising candidates who are passionate about their work and are team players.
• A subset of the below skills should be fine as long as you are good.
• OAuth, API Integrations.
• Overall 6+ yrs of experience.
• Agnostic/Polyglot with multiple tech stacks.
• Worked on open source technologies – NodeJS, ReactJS, MySQL, NoSQL, MongoDB, CouchDB, DynamoDB, Clickhouse, Kafka.
• Backend exposure – good knowledge of building and integrating APIs.
• Efficient in building microservices in combining server & front-end.
• Knowledge of cloud architecture.
• Excellent knowledge and understanding skills on OAuth.
• Should have sound working experience with relational and columnar DB.
• Should be innovative and communicative in approach.
• Will be responsible for functional/technical track of a project.

You will closely work with the engineering team and support the Product Team of Plum.

A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls and Compass. Xoxoday works with over 1000 global clients. We help our clients in engaging and motivating their employees, sales teams, channel partners or consumers for better business results.

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. We however assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.

• 2+ years of experience in Python, Django, Mongo, Express, MySQL, etc
• Have built applications capable of serving high volume with low latency in production
• Following practices of agile development with continuous integration/deployment
• Experience in deploying applications in AWS cloud
• Knowledge in building applications for Fintech/payments domain is a bonus
• Bachelor’s or Master’s degree in CS or equivalent from a reputed institution
• Self-starter, hustler, and a desire to achieve greatness is a MUST
• Immediate joining preferred
• You will have the flexibility to design the application and systems from the ground up.
• Your primary responsibility is to implement business logic in the backend and create awesome restful APIs for seamless integration with our mobile front end.