MERN Stack Developer

Job Title: Python Developer (5–8+ Years Experience)

Location: Mumbai (Onsite)

Experience: 5–8+ Years

Salary: ₹9,00,000 – ₹12,00,000 per Annum (depending on experience & skill set)

Employment Type: Full-time

Job Description

We are looking for an experienced Python Developer to join our growing team in Mumbai. The ideal candidate will have strong hands-on experience in Python development, building scalable backend systems, and working with databases and APIs.

Key Responsibilities

• Design, develop, test, and maintain Python-based applications
• Build and integrate RESTful APIs
• Work with frameworks such as Django / Flask / FastAPI
• Write clean, reusable, and efficient code
• Collaborate with frontend developers, QA, and project managers
• Optimize application performance and scalability
• Debug, troubleshoot, and resolve technical issues
• Participate in code reviews and follow best coding practices
• Work with databases and ensure data security and integrity
• Deploy and maintain applications in staging/production environments

Required Skills & Qualifications

• 5–8+ years of hands-on experience in Python development
• Strong experience with Django / Flask / FastAPI
• Good understanding of REST APIs
• Experience with MySQL / PostgreSQL / MongoDB
• Familiarity with Git and version control workflows
• Knowledge of OOP concepts and design principles
• Experience with Linux-based environments
• Understanding of basic security and performance optimization
• AI tool integration: GitHub Copilot, Windsurf, Cursor, AIDE, etc
• Ability to work independently as well as in a team

Good to Have (Preferred Skills)

• Experience with AWS / cloud services
• Knowledge of Docker / CI-CD pipelines
• Good level understanding of prompt engineering
• Exposure to Microservices Architecture
• Basic frontend knowledge (HTML, CSS, JavaScript)
• Experience working in an Agile/Scrum environment
• Experience working with AI APIs such as ChatGPT, OpenAI, Gemini, Claude APIs
• Integrating AI APIs into web applications
• Experience using AI for automation, content generation, data processing, or workflow optimization

Experience:

• Total: 5+ years (Required)
• Python: 5 years (Required)

Position -  Full stack Developer

Location - Navi Mumbai

Freshers  0-3 yrs

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 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:

• Work across the full stack, building highly scalable distributed solutions that enable positive user experiences and measurable business growth
• Ideate and develop new product features in collaboration with domain experts in healthcare and genomics 
• Develop state of the art enterprise standard front-end and backend services
• Develop cloud platform services based on container orchestration platform 
• Continuously embrace automation for repetitive tasks
• Ensure application performance, uptime, and scale, maintaining high standards of code quality by using clean coding principles and solid design patterns 
• Build robust tech modules that are Unit Testable, Automating recurring tasks and processes  
• Engage effectively with team members and collaborate to upskill and unblock each other

Frontend Skills 

• HTML 5  
• CSS framework ( LESS/ SASS / Tailwind ) 
• Es6 / Typescript 
• Electron app /Tauri)
• Component library ( Bootstrap , material UI, Lit ) 
• Responsive web layout ( Flex layout , Grid layout ) 
• Package manager --> yarn / npm / turbo
• Build tools - > (Vite/Webpack/Parcel)
• Frameworks -- > React with Redux of Mobx / Next JS
• Design patterns 
• Testing - JEST / MOCHA / JASMINE / Cypress
• Functional Programming concepts (Good to have)
• Scripting ( powershell , bash , python )

Backend Skills 

• Nodejs - Express / NEST JS 
• Python / Rust
• REST API 
• SOLID Design Principles
• Database (postgresql / mysql / redis / cassandra / mongodb ) 
• Caching ( Redis ) 
• Container Technology ( Docker / Kubernetes )  
• Cloud ( azure , aws , openshift, google cloud ) 
• Version Control - GIT 
• GITOPS 
• Automation ( terraform , ansible ) 

Cloud Skills 

• Object storage
• VPC concepts 
• Containerize Deployment
• Serverless architecture 

 Other Skills 

• Innovation and thought leadership
• UI - UX design skills  
• Interest in in learning new tools, languages, workflows, and philosophies to grow
• Communication 

To know more about us- https://haystackanalytics.in/

Job Summary

We are seeking a highly skilled Full Stack Engineer with 2+ years of hands-on experience to join our high-impact engineering team. You will work across the full stack—building scalable, high-performance frontends using Typescript & Next.js and developing robust backend services using Python (FastAPI/Django).

This role is crucial in shaping product experiences and driving innovation at scale.

Mandatory Candidate Background

• Experience working in product-based companies only
• Strong academic background
• Stable work history
• Excellent coding skills and hands-on development experience
• Strong foundation in Data Structures & Algorithms (DSA)
• Strong problem-solving mindset
• Understanding of clean architecture and code quality best practices

Key Responsibilities

• Design, develop, and maintain scalable full-stack applications
• Build responsive, performant, user-friendly UIs using Typescript & Next.js
• Develop APIs and backend services using Python (FastAPI/Django)
• Collaborate with product, design, and business teams to translate requirements into technical solutions
• Ensure code quality, security, and performance across the stack
• Own features end-to-end: architecture, development, deployment, and monitoring
• Contribute to system design, best practices, and the overall technical roadmap

Requirements

Must-Have:

• 2+ years of professional full-stack engineering experience
• Strong expertise in Typescript / Next.js OR Python (FastAPI, Django) — must be familiar with both areas
• Experience building RESTful APIs and microservices
• Hands-on experience with Git, CI/CD pipelines, and cloud platforms (AWS/GCP/Azure)
• Strong debugging, optimization, and problem-solving abilities
• Comfortable working in fast-paced startup environments

Good-to-Have:

• Experience with containerization (Docker/Kubernetes)
• Exposure to message queues or event-driven architectures
• Familiarity with modern DevOps and observability tooling

Our Client is focused on democratizing Insurance through technology. It is a cloud-based platform connecting distributors to the Insurance Ecosystem to sell and manage Insurance programs. They are creating a middleware connecting consumers, traditional insurance institutions, intermediaries, and service partners on a single platform. Basically, give distributors the ability access to the entire Insurance ecosystem via 1 API / 1 platform.

Their goal is simple - Provide a new way to do Insurance, which is secure, easy, and focuses on the consumer while staying compliant with the frameworks laid down by the regulator.

Description

This is a mission-critical role. They are a small, diverse, agile and high-performance, engineering team. They are looking for versatile developers who will:

• Innovate their existing product and work on creating tools that crunch integration times and time to market
• Improve through peer-learning and transmit them to the firm's dev ecosystem.
• Take ownership and get the job done.

They are clear. They need role shapers, not role takers.

Key Responsibilities

• You will be responsible for design, development and delivery our web-based application in an agile manner built on Java Spring Boot, React, My SQL and Mongo DB.
• You will be expected to write code on day-to-day basis while testing it on real world use cases
• You will be an independent owner of your feature on the platform.
• You will be a part of the core software development team and are expected to participate in all development cycles.
• You will be responsible for closure of business requirements end-to-end by working cross-functionally and will be expected to mentor and drive other members of the team.

Requirements

• Bachelor's degree or higher in Computer / Technology domain.
• 4-7 years of relevant work experience, preferably in a start-up environment/ building SaaS products.
• Excellent coding skills with ability to deliver in a hyper growth phase.
• Hands on experience in JAVA and practical experience in developing and designing scalable software solutions.
• Excellent Problem-solving skills & understanding of data structures in a complex environment.
• Extensive experience in Spring, Hibernate and SpringBoot
• Experience in building REST Services
• Experience in integrating third party APIs (Payment gateways, SMS gateways, Accounting software APIs, APIs of CRM tools etc.) into web applications
• Experience in working with SQL and no SQL DBs (Preferably Mongo DB)
• Working knowledge of Kubernetes and Docker is a plus
• Knowledge of how insurance processes and past experience in working on insurance applications is a plus.

We are looking for passionate, talented, and motivated Developers to join our team and help deliver high-quality technical solutions. If you’re excited about working on the newest technologies and delivering value with a sense of ownership, then you should join us.

What you will do:

• Write clean code that follows industry standards and best practices.
• Participate in architectural discussions to improve our technology stack.
• Innovate ideas to promote best practices.
• Work closely with cross-functional stakeholders to make collaboration better between teams.
• Deliver high-quality and maintainable code using test-driven methodologies.
• Participate and contribute towards improving the development process and practices within the team and across the organization.

Qualifications:

• You will have a minimum of 3 years of industry experience developing on the FullStack
• Experience with CSS, HTML, Javascript
• Experience with RESTful services
• Knowledge and experience in building scalable Node.js applications
• Continuous integration/continuous deployment experience
• Experience with building tools such as Webpack, grunt, gulp, babel etc.
• Strong desire to learn and share knowledge with others

Desired Skills:

• Strong understanding of data structures and design patterns
• Experience with one or more front-end Javascript frameworks is a BIG plus
• Full understanding of the complete web technology stack including how to architect highly scalable solutions
• Experience with Relational or NoSQL databases
• Working knowledge of AWS services.

We are looking for skilled Senior Full-Stack developers who can architect and develop large-scale enterprise applications using React.js for front-end and Node.js for API's.

Responsibilities :

●      Review application requirements and interface designs.

●      Identifying web-based user interactions.

●      Developing and implementing highly responsive user interface components using React concepts.

●      Writing application interface codes using Javascript following React.js workflows.

●      Understand proposed features and quickly design and build scalable API and SQL schema & queries.

●      Proactively analyze website performance and implement solutions for improvement.

●      Collaborate with architects, developers, business analysts, and QA analysts to design, develop, and test applications.

●      Documenting application changes and developing updates.

●      Collaborate with other team members.

Requirements :

●      Proven work experience as MERN developer (5+yrs)

●      3+ years of experience building complex web applications.

●      Solid work experience using component-based development on the client-side.

●      3+ years of experience coding robust and secure Rest API's in Node.js, JSON, XML.

●      Experience coding in JavaScript, HTML, CSS.

●      Experience in integrating systems using Rest APIs and single sign-on.

●      Experience with continuous integration / continuous deployment using AWS CodePipeline and CloudFormation templates.

●      Experience with AWS infrastructure (API Gateway, S3, Lambda, Aurora, EC2).

●      Experience with Google Analytics integration.

●      Deep knowledge to create standards-compliant, cross-browser, mobile compatible front-end code with responsive design.

●      Deep knowledge of server-side and front-end performance optimization.

●      Strong design skills are a huge plus.

●      Should be a self-starter who is excited to solve many technical challenges relentlessly.

●      Must have excellent written and verbal communication skills.

Roles/Responsibilities:

 Own a team of 15-20 Developers and QAs at various levels

 Provide continuous feedback, training and make sure team is working on their full

    potential at all time

 Review the architecture/design of a product/module/feature and provide feedback

 Architect, design and/or hands-on code the critical portion of a

   product/module/feature

 Mentor the tech-leads on architecting the product to deliver on-time

Jobs Skills required:

 Strong tech background of working in product company

 Understanding of various backend and frontend technologies and its core concepts

 Ability to understand the business problems and solve it with innovative tech

    solutions

 Very strong analytical and problem-solving skills in super changing environment

At BigRadar we automated consumer interactions using Chatbots. You'll be working in the backend to create services to make it happens. Obviously, we're looking for self-driven individuals who're proud of their code and do care about no more spaces.

Requirements:

• At least 3 years experience.
• Writing HTML, CSS, and JavaScript.
• Expertise in front end framework like Angular (preferred) or React.
• Expertise in back-end programming language JavaScript, TypeScript, NodeJs.
• Working with RDBMS such as Postgres or MySQL.
• Experience implementing testing platforms and unit tests.
• Proficiency with Git.
• Appreciation for clean and well-documented code.
• Understanding of microservices and distributed systems.
• Experience working with AWS infrastructure.
• Docker or Kubernetes.
• Message queues such as Kafka.
• CI/ CD tools such as Jenkins.

BigRadar is an early-stage SaaS company which delivers great customer satisfaction. Our monthly Monthly revenue rate is increasing rapidly which create great career opportunities for people working with us.

Since, our primary customer base in London, UK. We will soon launch our office there!