305 Flask jobs in New Delhi

Job Title: Software Development Engineer (SDE3)

Location: Noida (Work from Office)

Job Type: Full-time

Job Summary
As an SDE3, you will be a technical leader within your team, responsible for driving the design

and implementation of complex software systems. You will play a crucial role in shaping our

technical roadmap, mentoring junior engineers, and ensuring the delivery of high-quality,

scalable, and maintainable code. This role requires deep technical expertise in both PHP and

Python, a strong understanding of architectural patterns like MVC, and proficiency with modern

web frameworks and database technologies.

Key Responsibilities

• System Design & Architecture: Lead the design and architecture of highly scalable, reliable,

and performant backend systems and microservices. Make informed technical decisions,

considering trade-offs and long-term system health.

• Full-Stack Development (Backend Focus): Develop robust and efficient backend solutions

using PHP and Python.

○ PHP: Design and implement complex features leveraging PHP, with a strong emphasis on MVC

(Model-View-Controller) architectural patterns to ensure modular, maintainable, and scalable

code.

○ Python: Develop high-performance APIs and services using Python, with demonstrated

proficiency in either Flask or FastAPI.

• Database Management: Design, optimize, and manage database schemas for both SQL (e.g.,

MySQL, PostgreSQL) and NoSQL (e.g., MongoDB, Redis, Cassandra) databases. Optimize

complex queries and ensure data integrity and performance.

• Technical Leadership & Mentorship: Provide technical guidance, conduct thorough code

reviews, and mentor SDE1 and SDE2 engineers, fostering their growth and ensuring adherence

to best practices.

• Code Quality & Best Practices: Champion clean code principles, test-driven development

(TDD), and continuous integration/continuous deployment (CI/CD) practices. Identify and

address technical debt proactively.

• Problem Solving & Debugging: Independently analyze, troubleshoot, and resolve complex

technical issues across various layers of the application.

• Cross-Functional Collaboration: Collaborate closely with product managers, QA engineers, and

clients to translate business requirements into technical solutions and deliver features

effectively.

• Performance & Optimization: Identify performance bottlenecks and implement solutions to

optimize system response times, resource utilization, and overall scalability.

Qualifications

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
• 5-7 years of progressive experience in software development, with a significant portion in

backend development.

• Proficiency in PHP, with extensive experience in designing and implementing applications

adhering to the MVC architectural pattern.

• Expert proficiency in Python, with hands-on experience and a strong understanding of either

Flask or FastAPI for building robust web services and APIs.

• Demonstrable strong knowledge of SQL databases (e.g., schema design, query optimization,

indexing, stored procedures) and experience with at least one relational database system (e.g.,

MySQL, PostgreSQL).

• Strong knowledge of NoSQL databases (e.g., document stores like MongoDB, keyvalue stores

like Redis, or column-family stores like Cassandra), including data modeling, querying, and

performance considerations.

• Experience with version control systems, particularly Git.
• Solid understanding of data structures, algorithms, and object-oriented programming

(OOP) principles.

• Excellent problem-solving, analytical, and debugging skills.
• Strong communication and interpersonal skills, with the ability to articulate complex technical

concepts to both technical and non-technical audiences.

Preferred Skills

• Experience with cloud platforms (e.g., AWS, Azure, GCP, MediaLive).
• Familiarity with containerization technologies (Docker, Kubernetes).
• Experience with message queues (e.g., RabbitMQ, SqS).
• Knowledge of front-end technologies (JavaScript,HTML, CSS) is a plus.
• Experience working in an Agile/Scrum development environment.

Skills: backend development,php development,mvc architecture,flask,python,fast api,software development

• Experience with various version control tools like GIT & SVN.

• Working experience of CI/CD pipeline integration, GIT & Jenkins

• Expert & build& deployment tools like gulp, grunt, docker etc., and having experience with architecting solutions to complex problems.

• Experience with writing custom reusable components, pipes, directives, services & modules using Angular CLI.

• Excellent communications skills with ability to communicate effectively in visual, verbal, and written form to teams, clients and leadership.

• Good understanding of framework code and methods of component architecture

• Familiarity with the whole web stack, including protocols and web server optimization techniques

• Working experience with unit testing and end-to-end testing tools - preferably Jasmine, Karma, Protractor or similar alternatives.

• Review functional requirements and implement test plans and test cases for automated/manual testing

• Experience in data test cases development, test report documentation, regression testing

• Utilize, expand and create new automated testing frameworks, preferably using BDD, Selenium.

• Identify quality issues and create test reports

Qualifications we seek in you :

Minimum Qualifications :

• BE/B Tech/MCA

• Excellent written and verbal communication skills

Preferred Qualifications/ Skills :

• 5+ years of professional experience in front end development using HTML, CSS, JS & JS frameworks especially in Angular.

• 5+ years of experience and expertise with HTML5, CSS3, Sass/Less, Mixins, Polyfills, JS Libraries & Frameworks like (jQuery, NodeJS, AngularJS, Angular 7.0 & above), REST API's, GraphQL - Experience in functional automation tools

• Experience in API testing using Postman/SoapUI or other tools

• Experience in using Application Lifecycle Test Management tools Rally

Keywords : Angular, Microservices, CI/CD pipeline

Mandatory Key Skills (atleast 1) : Angular, Microservices, CI/CD pipeline

Responsibilities

• Develop and maintain responsive web applications using and .
• Build Progressive Web Applications (PWA) with offline capabilities and mobile-first design.
• Implement state management using Redux/Redux Toolkit with persistence.
• Create reusable UI components using Material-UI (MUI).
• Optimize application performance and ensure cross-browser compatibility.
• Collaborate with backend teams for API integration.

Requirements

• Bachelor's degree in Computer Science, Software Engineering, or related fields.
• 2-5 years of experience in frontend development with / .
• Strong knowledge of Redux Toolkit, MUI, PWA, and API integration.

Frontend Technologies

• 3+ years' experience with and modern JavaScript (ES6+).
• Proficiency in and server-side rendering concepts.
• Experience with TypeScript for type-safe development.
• Strong knowledge of Redux/Redux Toolkit for state management.
• Expertise in Material-UI (MUI) component libraries.

Development Tools

• Knowledge of PWA development, Workbox, and Service Workers.
• Proficiency in Git version control and collaborative workflow.
• Experience with Webpack, Craco, and modern build tools.
• Experience with Docker containerization.

Additional Skills

• Experience with Firebase Integration (Auth, Firestore, Cloud Messaging), CleverTap Integrations, etc.
• Experience with data visualization libraries (Recharts, , etc. ).
• Understanding of responsive design and mobile-first development.
• Knowledge of webhooks.
• Knowledge of performance optimization techniques.

This job was posted by Soniya Yadav from Twenty Point Nine Five Ventures.

As an SDE3, Responsible for driving the design and implementation of complex software systems. You will play a crucial role in shaping our technical roadmap, mentoring junior engineers. Requires deep technical expertise in both PHP and Python.

Required Candidate profile

SDE3: Lead complex PHP/Python backend systems. Expertise in MVC, Flask/FastAPI, SQL/NoSQL. Drive architecture, mentor engineers, ensure high-quality scalable code. Modern Web framework and Data Base

Exploring the role

We are seeking a highly skilled and experienced
Full Stack Developer
with expertise in
and .NET
to join our engineering team. The ideal candidate will have a strong background in designing, developing, and deploying scalable applications, while also mentoring junior engineers and driving technical excellence across the team.

You will be responsible for building high-quality, maintainable, and performant web applications, while making strategic technical decisions and collaborating with cross-functional teams to deliver business value.

How your day will look like/Job responsibility

Design, develop, and deploy software solutions across the stack (frontend and backend).

Provide accurate story/coding estimates for planned work.

Review code contributions, provide constructive feedback, and ensure adherence to best practices.

Assess software quality, maintainability, and scalability of product features.

Troubleshoot and resolve complex software problems with maintainable and efficient solutions.

Evaluate and balance trade-offs between technical and design approaches.

Mentor and guide
SDE 1 engineers
, fostering a culture of continuous learning and improvement.

Collaborate closely with product managers, designers, and QA to deliver features in Agile environments.

Education & Work Experience

Bachelor's degree
in Computer Science or related technical discipline.

8+ years of professional software development experience
.

Proven track record of designing, developing, and deploying full-stack solutions.

Experience mentoring junior developers (SDE 1 or equivalent).

Knowledge:

Solid grasp of
Data Structures, Algorithms, and CS fundamentals
.

Understanding of
secure coding practices
.

Knowledge of
software quality, maintainability, and scalability best practices
.

Familiarity with
trade-offs in technical/design decisions
.

Experience with
cloud platforms (Azure/AWS/GCP)
.

Understanding of
CI/CD pipelines, DevOps practices
, and containerization (
Docker, Kubernetes
).

Skills:

Strong coding and problem-solving skills.

Proficiency in
JavaScript/TypeScript
,
React (18+)
, and

(App Router, SSR/SSG/ISR).

Backend expertise in
C#, .NET/.NET Core, ASP.NET Core (Web API, MVC)
.

Strong experience with
Entity Framework Core
and
LINQ
.

Frontend development with
modern CSS (Tailwind CSS/SCSS)
and component-based UI patterns.

State management and data fetching with
Redux Toolkit, Zustand, React Query (TanStack Query)
.

Building
responsive, accessible (a11y) web UIs
.

Authentication/authorization with
OAuth2, OpenID Connect, JWT, Azure AD,
.

Code reviews, mentorship, and Agile collaboration (Scrum/Kanban).

Familiarity with AI coding tools like
CursorAI and GitHub Copilot
.

Equal Opportunity Employer

We are proud to be an equal opportunity employer and are committed to creating a diverse and inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Calling all innovators – find your future at Fiserv.

We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day – quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.

Job Title

Manager, Software Development

What does a great Software Development Engineer/Manager do?

As Software Development Engineer your focus will be on applying the principles of engineering to software development. The role focuses on the complex and large software systems that make up the core systems for the organization. You will be responsible for developing, unit testing, and integration tasks working within this highly visible-client focused web services application. Development efforts will also include feature enhancements, Cyber security vulnerability fixes, and bug fixes as well as support of the production environment.

What will you do:

• Collaborate within a team environment in the development, testing, and support of software development project lifecycles.
• Develop new features and fix defects, cyber vulnerability fixes.
• Prepare any necessary technical documentation.
• Track and report daily and weekly activities.
• Participate in code reviews and code remediation.
• Perform and develop proper unit tests and automation.
• Research problems discovered by QA or product support and develop solutions to the problems.
• Perform additional duties as determined by business needs and as directed by management.
• Should be hands-on Java developers who need to spend ~70% time in development work and ~30% in managing team.

What you will need to have:

• Must have 12+ years of experience in Java development using, J2EE;Spring;Messaging; Caching; Cloud; Kafka, Linux, Unit testing, Code review, Coding standard, Secure coding practices, Scrum (Agile), Jira
• Experienced in XML, XML Schemas, and Web Service technology.
• Knowledge of Integration and unit test and test driven development practices. Strong integration design and development experience.
• Should have good understanding of Framework and Design Patterns and be able to understand complex Architectural aspects.
• Familiarity with front-end technologies such as ReactJS and AngularJS.
• Ability to track progress against assigned tasks, report status, and proactively identify issues.
• Demonstrate the ability to present information effectively in communications with peers and project management team.
• Highly Organized and Works well in a fast paced, fluid, and dynamic environment.
• Should have Agile development experience.
• Work successfully in a team environment and demonstrate a willingness to help team members in achieving their project goals if required.
• ownership and accountability for delivering assigned tasks and deliverable within the established schedule.

What would be great to have:

• Experience working in a Scrum Development Team
• Banking and Financial Services experience. Good to have Payment domain experience.
• Java, Cloud, AI Certifications.

Thank you for considering employment with Fiserv. Please:

• Apply using your legal name
• Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Diversity and Inclusion:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

Responsibilities
Development and Architecture:

• Architect, develop, and maintain scalable React Native applications for both iOS and Android platforms.
• Write clean, modular, reusable, and well-documented code adhering to industry standards and best practices.
• Optimize app performance using techniques like lazy loading, memoization, and selective rendering.
• Ensure smooth offline capabilities using tools like Redux Persist, SQLite, MMKV, or similar.
• Integrate Firebase, Google Analytics, Crashlytics, Clevertap, and Appsflyer for analytics, crash reporting, and user engagement.
• Implement push notifications, in-app messaging, and background data sync effectively.
• Optimize apps for low battery consumption, smooth animations, low latency, and security.
• Knowledge of UI/UX design principles and experience working with designers to implement high-quality interfaces.
• Follow best practices for animation performance, such as minimizing overdraw and avoiding layout thrashing.
• Implement smooth and performant animations using React Native's Animated API, Reanimated, and Gesture Handler.

State Management And Data Handling

• Implement Redux Toolkit with middleware like Redux Thunk or Redux Saga for efficient and scalable state management.
• Handle asynchronous data flows and offline-first strategies in mobile apps.
• Consume and manage data via GraphQL, REST APIs, and WebSockets.

Native Module Integration

• Develop or integrate native modules using Swift for iOS or Kotlin/Java for Android as needed.
• Understand and troubleshoot bridging concepts between native code and JavaScript.

Tooling And Debugging

• Debug efficiently using React Native Debugger, Flipper, and Chrome DevTools.
• Monitor app health and performance using Firebase Performance Monitoring, Sentry, or other tools.

CI/CD And DevOps

• Implement and maintain CI/CD pipelines using tools such as Fastlane, Bitrise, or Jenkins.
• Automate build, test, and deployment workflows for seamless delivery.

Testing And Quality

• Write and maintain unit tests using Jest, React Native Testing Library, or similar tools.
• Conduct code reviews and ensure code quality and compliance with standards.

Team Collaboration

• Collaborate closely with UI/UX designers, backend developers, and product managers.
• Lead and mentor junior developers through pair programming, code reviews, and knowledge-sharing sessions.
• Participate in sprint planning, estimations, and retrospectives in Agile/Scrum environments.
• Manage version control and collaboration using Git, including branching strategies and pull request workflows.

Requirements

• Bachelor's Degree in Computer Science, Software Engineering, or related field.
• 3+ years of experience in mobile development, specifically with React Native.
• Strong foundational knowledge of JavaScript (ES6+) and TypeScript.
• Experience in iOS and Android native development is a plus.

Core Development Skills

• Strong proficiency in TypeScript and JavaScript ES6+.
• Experience building and shipping apps on both the Google Play Store and the Apple App Store.
• Strong understanding of mobile design principles, responsive UI/UX, and standard design libraries (Material Design, Human Interface Guidelines).
• Solid experience with native mobile development in either Swift (iOS) or Kotlin/Java (Android).
• In-depth knowledge of Redux Toolkit, async middlewares, and offline state handling.
• Experience with GraphQL, RESTful APIs, and WebSockets.
• Knowledge of CI/CD practices using Fastlane, Bitrise, or Jenkins.
• Competent with tools like React Native Debugger, Flipper, and performance monitoring tools.
• Familiarity with unit testing frameworks like Jest.
• Strong focus on performance optimization, error/crash handling, and secure mobile app development.
• Excellent problem-solving skills, communication, and the ability to work independently and in a team.

This job was posted by Soniya Yadav from Twenty Point Nine Five Ventures.

Design, develop, test &maintain software solutions using .NET technologies.

Collaborate on backend development projects.

Exp in Winforms / WPF developer with hands-on experience in multi-threading.

Exp with video and audio streaming over IP

Responsibilities

• Develop and Maintain Backend Applications: Design, build, and maintain high-quality, scalable backend applications using Python, ensuring robust functionality and performance.
• Design and Optimize APIs: Build and secure RESTful APIs using FastAPI, Sanic, or Django, implementing best practices for scalability and security.
• Implement Asynchronous Programming: Leverage asyncio and aio asynchronous operations, enabling efficient handling of concurrent tasks.
• Database Management: Create and optimize SQL queries, manage databases using Django ORM or SQLAlchemy, and ensure smooth migrations and indexing for improved database performance.
• Integrate Cloud Services: Deploy and manage services on AWS, using EC2 S3 RDS, and Lambda, and utilize CloudWatch for application monitoring.
• Collaborate with CI/CD Pipelines: Integrate code with CI/CD pipelines in Jenkins, GitLab CI, or AWS CodePipeline for continuous deployment and automated testing.
• Testing and Debugging: Write unit, integration, and functional tests with PyTest or UnitTest, and use debugging tools like pdb and Sentry to track and resolve issues.
• Ensure Code Quality and Version Control: Utilize Git for version control, participating in code reviews, and maintaining a collaborative environment with the development team.
• Stay Updated on New Technologies: Continuously learn about the latest trends in Python development, cloud computing, and backend best practices to enhance development efficiency.

Requirements

• Bachelor's Degree in Computer Science, Software Engineering, or a related field.
• 2 - 4 years of experience in backend development with Python.
• Strong knowledge of web frameworks, databases, and API development.

Python Proficiency

• Core Python: Strong understanding of Python syntax, data structures, and built-in libraries.
• Object-Oriented Programming (OOP): Proficient in OOP principles, including inheritance, encapsulation, polymorphism, and design patterns.

Web Frameworks

• FastAPI: Skilled in building asynchronous APIs with FastAPI, including using dependency injection, request validation, and async programming.
• Sanic: Experience with Sanic for building high-performance, asynchronous web applications.
• Django: Proficient in full-stack development with Django, including ORM, middleware, and Django REST Framework for API development.

Database And SQL

• SQL Proficiency: Strong command of SQL for managing and optimizing relational databases like PostgreSQL and MySQL.
• ORM: Experience with Django ORM and SQLAlchemy for streamlined database interactions.
• Database Optimization: Skilled in optimizing SQL queries, managing indexes, and handling database migrations.

AWS And Cloud Services

• AWS Services: Hands-on experience with EC2 S3 RDS, Lambda, and CloudWatch for deployment, storage, and monitoring.
• Serverless Architectures: Familiar with building and deploying serverless applications using AWS Lambda.

API Development And Integration

• RESTful APIs: Proficient in designing, building, and securing RESTful APIs using frameworks like FastAPI, Sanic, and Django.
• Authentication/Authorization: Experienced with OAuth, JWT, and session-based authentication mechanisms.

Asynchronous Programming

• Asyncio and Aiohttp: Skilled in Python's asynchronous capabilities, especially within web frameworks.
• Concurrency: Knowledge of concurrent operations using async/await, threading, and multiprocessing for efficient task management.

Version Control And CI/CD

• Git: Proficient in Git for version control and collaborative development.
• CI/CD Pipelines: Experience in setting up CI/CD pipelines with Jenkins, GitLab CI, or AWS CodePipeline for automated testing and deployment.

Testing And Debugging

• Unit Testing: Knowledgeable in testing frameworks like PyTest and UnitTest for unit, integration, and functional testing.
• Debugging Tools: Familiar with debugging tools like pdb, logging, and Sentry for efficient error tracking and monitoring.

This job was posted by Soniya Yadav from Twenty Point Nine Five Ventures.