Python Developer at HaystackAnalytics · Navi Mumbai · 0 - 5 years · ₹3L - ₹8L / yr · Profitable · Posted 24 Jun 2025

Position – Python Developer
Location – Navi Mumbai
Who are we
Based out of IIT Bombay, HaystackAnalytics is a HealthTech company creating clinical genomics products, which enable diagnostic labs and hospitals to offer accurate and personalized diagnostics. Supported by India's most respected science agencies (DST, BIRAC, DBT), we created and launched a portfolio of products to offer genomics in infectious diseases. Our genomics-based diagnostic solution for Tuberculosis was recognized as one of the top innovations supported by BIRAC in the past 10 years, and was launched by the Prime Minister of India in the BIRAC Showcase event in Delhi, 2022.
Objectives of this Role:
- Design and implement efficient, scalable backend services using Python.
- Work closely with healthcare domain experts to create innovative and accurate diagnostics solutions.
- Build APIs, services, and scripts to support data processing pipelines and front-end applications.
- Automate recurring tasks and ensure robust integration with cloud services.
- Maintain high standards of software quality and performance using clean coding principles and testing practices.
- Collaborate within the team to upskill and unblock each other for faster and better outcomes.
Primary Skills – Python Development
- Proficient in Python 3 and its ecosystem
- Frameworks: Flask / Django / FastAPI
- RESTful API development
- Understanding of OOPs and SOLID design principles
- Asynchronous programming (asyncio, aiohttp)
- Experience with task queues (Celery, RQ)
Database & Storage
- Relational Databases: PostgreSQL / MySQL
- NoSQL: MongoDB / Redis / Cassandra
- ORM Tools: SQLAlchemy / Django ORM
Testing & Automation
- Unit Testing: PyTest / unittest
- Automation tools: Ansible / Terraform (good to have)
- CI/CD pipelines
DevOps & Cloud
- Docker, Kubernetes (basic knowledge expected)
- Cloud platforms: AWS / Azure / GCP
- GIT and GitOps workflows
- Familiarity with containerized deployment & serverless architecture
Bonus Skills
- Data handling libraries: Pandas / NumPy
- Experience with scripting: Bash / PowerShell
- Functional programming concepts
- Familiarity with front-end integration (REST API usage, JSON handling)
Other Skills
- Innovation and thought leadership
- Interest in learning new tools, languages, workflows
- Strong communication and collaboration skills
- Basic understanding of UI/UX principles
To know more about us – https://haystackanalytics.in

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NonStop io Technologies is a value-driven company with a strong focus on process-oriented software engineering. We specialize in Product Development and have a decade's worth of experience in building web and mobile applications across various domains. NonStop io Technologies follows core principles that guide its operations and believes in staying invested in a product's vision for the long term. We are a small but proud group of individuals who believe in the 'givers gain' philosophy and strive to provide value in order to seek value. We are committed to and specialize in building cutting-edge technology products and serving as trusted technology partners for startups and enterprises. We pride ourselves on fostering innovation, learning, and community engagement. Join us to work on impactful projects in a collaborative and vibrant environment.
Brief Description
We are looking for a passionate and experienced Backend Engineer (Python) to join our engineering team. The ideal candidate will have strong expertise in backend development, API design, scalable application architecture, and SaaS applications, along with exposure to data processing, ETL workflows, and data integration. Familiarity with React and frontend technologies is an added advantage.
You will collaborate with cross-functional teams to build, enhance, and maintain robust, secure, and high-performance applications while contributing to backend services, data workflows, and cloud-based systems.
Roles and Responsibilities
- Design, develop, and maintain scalable and high-performance web applications and backend services.
- Develop secure, efficient, and reliable backend services and RESTful APIs using Python.(Django/Flask)
- Design and implement scalable microservices and distributed application components.
- Collaborate with frontend engineers and contribute to React-based features or integrations when required.
- Develop, maintain, and support ETL/data processing workflows for extracting, transforming, and loading data across systems.
- Build Python-based data processing scripts, services, and integrations to support application and business requirements.
- Work with relational databases to support data extraction, transformation, validation, and loading processes.
- Collaborate with data and engineering teams to improve data quality, reliability, and processing efficiency.
- Work closely with product managers, designers, QA engineers, DevOps, data engineers, and other stakeholders to deliver high-quality features.
- Write clean, maintainable, reusable, and testable code following software engineering best practices.
- Participate in code reviews and contribute to coding standards, engineering practices, and technical improvements.
- Optimize applications, APIs, databases, ETL processes, and backend services for performance, reliability, and scalability.
- Troubleshoot, diagnose, and resolve application, data processing, and production issues.
- Contribute to system architecture, technical design decisions, and continuous improvement initiatives.
- Develop and maintain automated tests to ensure application quality and reliability.
- Collaborate with DevOps teams to support CI/CD pipelines, containerized deployments, cloud-based applications, and deployment automation.
- Monitor and support backend services and data workflows in development, staging, and production environments
Requirements
- 3 to 6 years of professional experience in Backend Development using Python.
- Strong hands-on experience with Python backend frameworks such as Django and Flask.
- Experience building and supporting SaaS applications, with exposure to microservices, caching, pub-sub, messaging technologies, RESTful APIs, and distributed systems.
- Exposure to ETL processes, data pipelines, data integration, or data processing using Python. (Preferred)
- Understanding of ETL concepts such as data extraction, transformation, validation, loading, and data quality.(Preferred)
- Experience working with relational databases, preferably PostgreSQL, for application development and/or data processing workflows.
- Strong understanding of databases such as PostgreSQL, MySQL, MongoDB, or SQL Server.
- Familiarity with frontend technologies, particularly React, is an advantage.
- Experience with version control systems such as Git.
- Exposure to technologies such as Kafka, Redis, Elasticsearch, Redshift, Nginx, and GraphQL is a plus.
- Exposure to data technologies or tools such as Airflow, Pandas, SQLAlchemy, Spark, or similar data processing frameworks is a plus.
- Strong foundation in computer science, including data structures, algorithms, object-oriented programming, and software design principles.
- Familiarity with CI/CD pipelines and tools such as Jenkins.
- Good understanding of cloud platforms such as AWS, Azure, or GCP.
- Strong understanding of software design principles, scalable application architecture, and data structures.
- Experience with containerization technologies such as Docker.
- Knowledge of automated testing frameworks and best practices.
- Experience working in Agile/Scrum environments.
- Strong problem-solving, analytical, communication, and collaboration skills.
Why Join Us?
- Opportunity to work on a cutting-edge healthcare product
- A collaborative and learning-driven environment
- Exposure to AI and software engineering innovations
- Excellent work ethic and culture
If you're passionate about technology and want to work on impactful projects, we'd love to hear from you!
Position: Python Developer – Flask
Experience: 3+ Years
Location: Bangalore
Joining: Immediate Joiner Preferred
Employment Type: Full-Time
About the Role
We are looking for a skilled and passionate Python Developer with strong experience in Flask framework to join our growing development team. The ideal candidate should have hands-on experience in developing scalable backend applications, REST APIs, and integrating databases/services in a fast-paced environment.
Key Responsibilities
Develop, test, and maintain backend applications using Python and Flask.
Design and build RESTful APIs for web and mobile applications.
Collaborate with frontend developers, QA teams, and product stakeholders.
Write reusable, scalable, and efficient code.
Integrate third-party APIs and services.
Optimize application performance and troubleshoot issues.
Work with databases and ensure data security and integrity.
Participate in code reviews and technical discussions.
Maintain proper documentation for development activities.
Required Skills
3+ years of experience in Python development.
Strong hands-on experience with Flask framework.
Good understanding of REST API development.
Experience with MySQL/PostgreSQL/MongoDB databases.
Familiarity with ORM libraries such as SQLAlchemy.
Knowledge of Git/version control systems.
Understanding of software development lifecycle and agile methodologies.
Basic understanding of Docker and deployment processes is an added advantage.
Good debugging and problem-solving skills.
Preferred Skills
Experience with AWS/Azure or cloud platforms.
Exposure to microservices architecture.
Familiarity with CI/CD pipelines.
Knowledge of frontend technologies like React or Angular is a plus.
Educational Qualification
Bachelor’s degree in Computer Science, Information Technology, or related field.
What We’re Looking For
Immediate joiner or candidates with short notice period.
Strong communication and teamwork skills.
Self-driven and proactive mindset
We are looking for a skilled Python Developer to design, develop, and maintain robust backend systems. You will be responsible for building scalable web applications using the Flask micro-framework and managing high-performance NoSQL data storage with MongoDB. Your role involves creating RESTful APIs, optimizing database queries, and ensuring seamless integration between the backend logic and frontend components.
Key Responsibilities
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- Database Management: Architect and maintain MongoDB schemas; develop complex aggregation pipelines and optimize query performance.
- Backend Logic: Write clean, efficient, and testable Python code to handle server-side logic and data processing.
- Integration: Integrate third-party services and internal data sources using libraries like Requests or Flask-PyMongo.
- Performance Optimization: Identify and resolve bottlenecks in the application and database layers to ensure low latency.
- Testing & Security: Implement unit tests (using pytest or unittest) and follow security best practices (OAuth2, JWT, data encryption).
- Collaboration: Work closely with frontend developers to integrate user-facing elements and with DevOps to support deployment.
Required Technical Skills
CategoryRequirementsLanguageExpert-level Python (OOP, decorators, generators, and async programming).Frameworks Strong experience with Flask (routing, blueprints, middleware).DatabaseProficiency in MongoDB (BSON, indexing, sharding, and aggregation framework).ODMs/DriversExperience with PyMongo or MongoEngine.ArchitectureSolid understanding of RESTful API design and Microservices.Tools/DevOpsVersion control with Git; familiarity with Docker and CI/CD pipelines
Job Summary
We are seeking a skilled Python Developer with experience in building scalable applications using Python frameworks such as Flask and Django. The ideal candidate should have hands-on experience with PySpark for big data processing and strong SQL skills for data analysis and database management.
Key Responsibilities
- Design, develop, test, and maintain Python-based applications.
- Develop RESTful APIs using Flask and/or Django.
- Build scalable data processing pipelines using PySpark.
- Write efficient SQL queries, stored procedures, and optimize database performance.
- Integrate applications with databases and third-party services.
- Collaborate with cross-functional teams to gather and implement business requirements.
- Troubleshoot, debug, and enhance application performance.
- Follow coding standards, perform code reviews, and maintain technical documentation.
Required Skills
- Strong proficiency in Python.
- Hands-on experience with Flask and/or Django.
- Experience with PySpark for large-scale data processing.
- Strong knowledge of SQL (writing complex queries, joins, indexing, optimization).
- Understanding of REST APIs and microservices architecture.
- Experience with Git/version control.
- Knowledge of relational databases such as PostgreSQL, MySQL, SQL Server, or Oracle.
- Good problem-solving and analytical skills.
Preferred Skills
- Experience with cloud platforms (AWS, Azure, or GCP).
- Familiarity with Docker and Kubernetes.
- Knowledge of CI/CD pipelines.
- Experience with Airflow or other workflow orchestration tools.
- Understanding of Agile/Scrum methodologies.
We are looking for a Python Backend Developer to design, build, and maintain scalable backend services and APIs. The role involves working with modern Python frameworks, databases (SQL and NoSQL), and building well-tested, production-grade systems.
You will collaborate closely with frontend developers, AI/ML engineers, and system architects to deliver reliable and high-performance backend solutions.
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- Write unit tests, integration tests, and API tests to ensure code reliability
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- Follow clean code practices, documentation, and version control workflows
- Participate in code reviews and contribute to technical discussions
- Work closely with cross-functional teams to translate requirements into technical solutions
Required Skills & Qualifications
Technical Skills
- Strong proficiency in Python
- Hands-on experience with FastAPI
- Experience with MongoDB (schema design, indexing, aggregation)
- Solid understanding of SQL databases and relational data modelling
- Experience writing and maintaining automated tests
- Unit testing (e.g., pytest)
- API testing
- Understanding of REST API design principles
- Familiarity with Git and collaborative development workflows
Good to Have
- Experience with async programming in Python (async/await)
- Knowledge of ORMs/ODMs (SQLAlchemy, Tortoise, Motor, etc.)
- Basic understanding of authentication & authorisation (JWT, OAuth)
- Exposure to Docker / containerised environments
- Experience working in Agile/Scrum teams
What We Value
- Strong problem-solving and debugging skills
- Attention to detail and commitment to quality
- Ability to write testable, maintainable, and well-documented code
- Ownership mindset and willingness to learn
- Teamwork
What We Offer
- Opportunity to work on real-world, production systems
- Technically challenging problems and ownership of components
- Collaborative engineering culture
Job Description:
We are looking for a skilled Python Developer with 2+ years of hands-on experience in backend development and data processing. The ideal candidate should be proficient in Python and have working experience with web frameworks like Flask and FastAPI, along with exposure to data engineering and machine learning workflows.
Key Responsibilities:
Design, develop, and maintain scalable Python applications and APIs using Flask and FastAPI
Work with PySpark and Kafka for real-time data processing
Perform data manipulation and analysis using Pandas and NumPy
Develop and maintain modular, reusable, and testable code following OOP principles
Collaborate with data scientists to integrate ML models (TensorFlow, PyTorch, Scikit-learn) into production
Participate in code reviews, design discussions, and contribute to best practices
Write and maintain documentation for developed modules and workflows
Required Skills:
Strong proficiency in Python programming
Hands-on experience with Flask and/or FastAPI
Experience working with PySpark and Kafka
Solid understanding of Pandas, NumPy, and data handling in Python
Familiarity with TensorFlow, PyTorch, and scikit-learn
Good grasp of Object-Oriented Programming (OOP) concepts
Ability to write modular and maintainable code
Nice to Have:
Understanding of Machine Learning concepts and pipelines
Exposure to Generative AI (GenAI) technologies and tools
Experience with CI/CD tools, Docker, or cloud environments (AWS, GCP, etc.)
Qualifications:
Bachelor's degree in Computer Science, Engineering, or a related field
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Responsibilities:
- Design, build, and maintain efficient, reusable, and reliable Python code.
- Develop robust, highly scalable, and low-latency backend architectures and APIs.
- Apply strong OOPS principles to build modular and maintainable software systems.
- Utilise advanced Data Structures and Algorithms (DSA) to solve complex computational problems and optimise application performance.
- Integrate user-facing elements developed by front-end developers with server-side logic.
- Implement security and data protection measures.
- Identify bottlenecks, troubleshoot bugs, and devise elegant solutions to mitigate these issues.
- Collaborate cross-functionally with product managers, front-end developers, and QA engineers to deliver high-quality features.
Requirements:
- Core Python: Strong proficiency in Python programming with a deep understanding of its quirks, ecosystem, and best practices.
- OOPs Expertise: Excellent command over Object-Oriented Programming concepts (Inheritance, Polymorphism, Encapsulation, Abstraction) and design patterns.
- DSA Proficiency: Strong problem-solving skills with a deep understanding of Data Structures (Arrays, Trees, Graphs, Hash Tables, etc. ) and Algorithms (Sorting, Searching, Dynamic Programming, etc. ).
- Frameworks: Hands-on experience with popular Python web frameworks such as Django, FastAPI, or Flask.
- Database Management: Solid understanding of relational databases (e. g., PostgreSQL, MySQL) and ORM (Object-Relational Mapper) libraries.
- API Development: Experience in designing and developing RESTful APIs.
- Version Control: Proficient understanding of code versioning tools, such as Git.
- Clean Code: A strong commitment to writing clean, readable, and properly documented code.
Good to Have (Optional):
- Experience with NoSQL databases (e. g., MongoDB, Redis).
- Familiarity with cloud platforms (AWS, GCP, or Azure) and containerization tools (Docker, Kubernetes).
- Knowledge of asynchronous programming in Python (asyncio).
We are hiring a Python Django Developer to build robust backend services and APIs that power our products. You will own features from design through deployment.
Responsibilities
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Requirements
- 1+ years of professional experience with Django
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Euphoric Thought Technologies is a technology-driven firm focused on building scalable software solutions that streamline complex business processes. Operating at the intersection of data engineering and cloud infrastructure, the company serves a diverse portfolio of clients across the fintech and enterprise SaaS sectors. With a culture rooted in technical excellence and agile problem-solving, Euphoric Thought Technologies empowers its engineers to own their modules from conception to deployment, fostering an environment where high-impact code is the primary driver of growth.
Role Overview:
As a Python Developer specializing in Flask, you will be responsible for architecting and maintaining robust backend services that power our core platforms. Must have hands on experience in React.js ,You will work closely with cross-functional teams, including product managers and frontend engineers, to translate business requirements into high-performance API endpoints. Your daily contributions will directly influence the scalability and reliability of our applications, ensuring that our users experience seamless performance even as our data volume and traffic continue to grow.
Key Responsibilities:
- Design and implement scalable RESTful APIs using the Flask framework to support high-traffic web applications.
- Optimize database queries and schema designs in SQL to ensure low-latency data retrieval for complex reporting modules.
- Deploy and manage backend services on AWS infrastructure, ensuring high availability and efficient resource utilization.
- Collaborate with the engineering team to conduct rigorous code reviews, maintaining high standards for code quality and maintainability.
- Troubleshoot and resolve production-level bottlenecks to improve the overall stability of the application ecosystem.
- Integrate third-party services and internal microservices to expand the functionality of our existing product suite.
Required Skillset:
- Demonstrated expertise in building production-grade applications using Python and the Flask framework with 5 years of professional experience.
- Strong proficiency in React.js.
- Hands-on experience with AWS cloud services, including EC2, RDS, and S3, for deploying and scaling backend infrastructure.
- Ability to communicate technical concepts clearly to non-technical stakeholders and work effectively in a collaborative, team-oriented environment.
- Strong analytical mindset with the ability to debug complex issues and provide long-term architectural solutions.
- Comfortable working in a hybrid office environment in Bangalore, demonstrating the ability to manage tasks independently while staying aligned with team goals.
- A degree in Computer Science, Engineering, or a related field is preferred, though equivalent professional experience is highly valued.
Experience:
- Python: 5 years (Preferred)
- AWS: 3 years (Preferred)
- Flask: 3 years (Preferred)
- React.js 4 years (Preferred)

Experience and Expertise
● 7– 10 years of experience in backend development with Python or Golang.
● Solid understanding of RESTful APIs, microservices, and distributed systems.
● Strong knowledge of data structures, algorithms, and OOPS principles.
● Hands-on experience with relational and/or NoSQL databases.
● Familiarity with Linux development, Docker, and basic cloud concepts
(AWS/GCP/Azure).
● Proficiency with Git and version control workflows.
● Familiarity with AI-powered development tools or exposure to projects involving large
language models (LLMs) is a plus.
Skills
● Strong analytical and debugging skills with the ability to solve complex problems.
● Good communication and collaboration skills across teams.
● Ability to work independently with minimal supervision while being a strong team
player.
● Growth mindset – eagerness to learn new technologies





