Location : Bengaluru, India
Type : Full-time
Experience :4-7 Years
Mode :Hybrid
The Role
We're looking for a Full Stack Engineer who thrives on building high-performance applications at scale. You'll work across our entire stack—from optimizing PostgreSQL queries on 140M+ records to crafting intuitive React interfaces. This is a high-impact role where your code directly influences how sales teams discover and engage with prospects worldwide.
What You'll Do
- Build and optimize REST APIs using Django REST Framework handling millions of records
- Design and implement complex database queries, indexes, and caching strategies for PostgreSQL
- Develop responsive, high-performance front-end interfaces with Next.js and React
- Implement Redis caching layers and optimize query performance for sub-second response times
- Design and implement smart search/filter systems with complex logic
- Collaborate on data pipeline architecture for processing large datasets
- Write clean, testable code with comprehensive unit and integration tests
- Participate in code reviews, architecture discussions, and technical planning
Required Skills
- 4-7 years of professional experience in full stack development
- Strong proficiency in Python and Django/Django REST Framework
- Expert-level PostgreSQL knowledge: query optimization, indexing, EXPLAIN ANALYZE, partitioning
- Solid experience with Next.js, React, and modern JavaScript/TypeScript
- Experience with state management (Zustand, Redux, or similar)
- Working knowledge of Redis for caching and session management
- Familiarity with AWS services (RDS, EC2, S3, CloudFront)
- Understanding of RESTful API design principles and best practices
- Experience with Git, CI/CD pipelines, and agile development workflows
Nice to Have
- Experience with Elasticsearch for full-text search at scale
- Knowledge of data scraping, ETL pipelines, or data enrichment
- Experience with Celery for async task processing
- Familiarity with Tailwind CSS and modern UI/UX practices
- Previous work on B2B SaaS or data-intensive applications
- Understanding of security best practices and anti-scraping measures
Our Tech Stack
Backend
Python, Django REST Framework
Frontend
Next.js, React, Zustand, Tailwind CSS
Database
PostgreSQL 17, Redis
Infrastructure
AWS (RDS, EC2, S3, CloudFront), Docker
Tools
GitHub, pgBouncer
Why Join Us
- Work on a product processing 140M+ records—real scale, real challenges
- Direct impact on product direction and technical decisions
- Modern tech stack with room to experiment and innovate
- Collaborative team environment with a focus on growth
- Competitive compensation and flexible hybrid work model

About Appiness Interactive Pvt. Ltd.
About
Connect with the team
Similar jobs
Key Responsibilities & Skills
Strong hands-on experience in React.js, Node.js, Express.js, MongoDB
Ability to lead and mentor a development team
Project ownership – sprint planning, code reviews, task allocation
Excellent communication skills for client interactions
Strong decision-making & problem-solving abilities
Nice-to-Have (Bonus Skills)
Experience in system architecture design
Deployment knowledge – AWS / DigitalOcean / Cloud
Understanding of CI/CD pipelines & best coding practices
Why Join InfoSparkles?
Lead from Day One
Work on modern & challenging tech projects
Excellent career growth in a leadership position
Fullstack Developer:
We are looking for an onsite Fullstack Developer experienced with Fullstack technologies, Cloud and IoT solutions. For the agile development of our web, mobile, and cloud applications and IoT products, building efficient, reliable and scalable solutions. A hands-on coding role, where you will build and manage your own team.
Tasks:
· Development of modern based applications in the back-end
· Development, implementation and optimisation of innovative IoT products, web apps and new features
· Technical product design, solution architecture, specifications and implementation of Livello solutions
· Work with a cross-functional team to define, build, test, and deploy universal applications
· Version control with Git is part of your daily work and continuous integration
· Ensure the implementation of technical standards, quality assurance and best practices.
Requirements:
· Bachelor's degree in Computer Science or comparable field of study
· 2-4 years’ experience in agile software development
· Proficiency in Node.js, React js, Mongo DB, Docker along with any cloud Exp (AWS, GCP, Azure)
· Experience with test and deployment automation (Gitlab, Fastlane, Jest).
· Good to have Experience with GraphQL and Kubernetes as well as state management solutions (Redux, Saga)
· Ability to work cooperatively and independently, analytical thinking, willingness to lead and take on responsibility
· Fluent in English.
Nice to have:
· Experienced in IoT-to-Cloud managed services, Microservices.
· Knowledge of IoT device management and message brokers like AMQP or MQTT
Benefits
Ø A responsible position in a fast-growing and highly innovative start-up
Ø An agile and diverse team with colleagues from all over the world, working with our main office in Germany
Ø English speaking open work environment, with flat hierarchies and short decision-making paths
Ø Creative freedom for own ideas, projects and personal development.
We are a software development company. We have primarily worked with enterprises and startups who often wants to build a product from scratch. Our mission is to build software with solid foundations, addressing the primary concerns of startup founders when working with agencies. We believe in prioritizing maintainability, simplicity, and the Open-Closed Principle for long-term value.
We are seeking a passionate and experienced Senior Software Engineer to join our team and play a key role in building software with solid engineering foundations. You will be involved in all stages of the development process, from identifying business entities and defining their behaviors, to implementing clean and maintainable code using object-oriented programming principles.
Responsibilities:
1. Harness your React/Python/TypeScript mastery to craft high-performing applications that delight our global audience.
2. Champion automated tests like a knight in shining armor. If your code was a ship, your tests would be the lighthouse guiding it to safety.
3. Employ your object-oriented programming prowess to sculpt code that's as efficient as it is elegant.
4. Debug with the precision of a Swiss watchmaker. We believe the devil is in the details, and your keen eye will keep those pesky bugs at bay.
5. Push your changes to production and proactively monitor product to ensure value is delivered.
6. Help your peers by reviewing their PRs and design documents.
7. Help the company by recruiting amazing team members, like yourself.
About You:
1. You write Javascript using Typescript and use Object Oriented Programming paradigms to build software.
2. You have shipped products to production using Python, React and other relevant technologies.
3. You don't ship code without writing automated test coverage.
4. You practice "broken window theory" during software development on day to day basis.
5. You are good at communication and bring clarity to communication.
6. B.Tech in CS/EE/ECE is a plus.
Perks and Benefits:
1. Work remotely, anywhere in the world! Ditch the commute, embrace flexibility.
2. Comprehensive health insurance - spouse, kids, parents (pre-conditions!), 24/7 remote doctors.
3. Generous PTO (12 paid, 6 sick) + national/regional holidays + paid parental leave.
4. Annual off-sites - fully funded team trips, work and fun combined!
5. Drive initiatives from scratch, solve real challenges, maximize your career value.
6. Supportive, results-oriented team. Learn, grow, be your best.
The company has been widely recognized as an industry innovator in the Data Privacy, Security space and is being built by proven Cybersecurity executives who have successfully built and scaled high growth Security companies and built Privacy programs as executives.
We are seeking an experienced Senior React Developer with Node Engineer to join our team. The ideal candidate should have at least 7+ years of experience in building scalable web applications using NodeJS and a solid understanding of AWS services. The candidate should also have experience in designing and building large-scale distributed systems.
Responsibilities:
- Design and develop high-quality, scalable, and performant software solutions using NodeJS and AWS services.
- Collaborate with cross-functional teams, including product managers, designers, and other engineers, to identify and solve complex business problems.
- Design and develop large-scale distributed systems that are reliable, resilient, and fault-tolerant.
- Write clean, well-designed, and maintainable code that is easy to understand and debug.
- Participate in code reviews and ensure that all code is of high quality and adheres to best practices.
- Troubleshoot and debug production issues and work with the team to develop and implement solutions.
- Stay up-to-date with new technologies and best practices in software engineering and cloud computing.
Requirements:
- Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
- At least 5 years of professional experience in building web-based applications using ReactJS and NodeJS.
- Strong experience with React frameworks, including Ant Design.
- Strong understanding of JavaScript, and experience with libraries such as Redux.
- Experience with HTML and CSS, and the ability to create responsive web applications.
- Experience with server-side frameworks such as Express and NestJS.
- Strong understanding of software engineering best practices, including agile development, TDD, and continuous integration and deployment.
- Excellent problem-solving and analytical skills, with the ability to identify and solve complex technical problems.
- Strong communication and collaboration skills, with the ability to work effectively in a team environment.
- Architect brand-new software solutions to fulfill project requirements
- Create, design, and implement layouts for new and existing application features
- Create and maintain database designs for data storage and processing
- Maintain legacy code written by other developers, including bug fixes
- Integrate external software libraries and APIs into existing projects
- Bachelor of Engineering/Technology in computer science, software engineering, programming, or equivalent
- Proficiency with languages such as Python, Golang, and Javascript (Node.js, Vue.js)
- Proficiency with MongoDB and MySQL
- Proficiency with Dart/Flutter framework
- Proficiency with AWS suite
- Experience with Terraform preferred
- Understanding of code deployment tools such as Jenkins, Capistrano, and ElectricFlow
- Understanding of object-oriented programming
- Experience with the design and implementation of APIs
- Understanding of code versioning and management with Git
- Track record of successfully managing multiple company or customer websites
- Familiarity with common programming design patterns and best practices
- Experience with common web development tools and services, such as version control software, package managers, and CI/CD pipelines
- Excellent written and verbal communication skills
- Excellent time-management and communication skills
- Strong attention to detail and problem-solving skills
- Develop, test, and deploy fast and scalable web apps
- Assist high-end web applications using , Node JS , Mongo DB , Angular9+
- Responsible for solving complex technical issues and giving quick solutions
- Active in client communication to understand functional requirements
- Assist in design, coding and testing
- Provide quick and simple technical solutions
- Ensure quality projects are delivered within defined timelines
- Maintain database to ensure strong optimization and functionalities
- Designing and maintenance of fully functional large relational and non-relational databases
- Timely deployment of web apps on the cloud
- Server management and cloud-based infrastructure
- Establishment and integration of development tools as required
- Identification of application issues when deploying the apps
- App deployment on the cloud along with solving debugging issues
- Coding architecture for frontend and backend
- Building interactive consumer data
- Creating features in apps that have a mobile responsive design
- Testing applications and fixing bugs, along with security and data protection features
- Establish code architecture decisions for supporting scalability and good performance
- Makes use of popular front-end frameworks like Bootstrap, LESS, etc and design UI components
- Participation with developers for the creation of scalable RESTful APIs
- Conducting code reviews of developers
- A Bachelor’s in a related computer science field.
- Expertise and experience in the four main technologies – MongoDB, ExpressJS, Angular, and NodeJS
- Knowledge of HTML/CSS, jQuery, Python, OOPS, UI/UX design, AWS, Git, and design framework, web services, JSON, AJAX, cryptography, and security,
- Experience implementing applications using Angular or React
- Experience creating front end applications using HTML5, Angular, LESS/SASS frontend CSS frameworks like Bootstrap, etc.
- In depth knowledge of NodeJS, ExpressJS or Restify
- Experience implementing applications using Angular
- Hands-on experience with JavaScript Development on both client and server-side
- Experience with modern frameworks and design patterns,
- Experience with cloud technologies also a plus
Linkby is a global VC funded software company founded by one of Australia’s top digital publishing entrepreneurs. Our software helps D2C e-commerce brands and publishers work together more effectively and profitably than ever before. We’re currently building our engineering team globally to support our rapid growth. We have a remote-first culture while also having office hubs in Toronto, London & Sydney.
We are looking for a seasoned full-stack engineer to join our team to help build out and manage our entire web infrastructure. You will work as part of a team to develop fast, well-tested, and performant code across various web projects in the adtech vertical.
As a Full Stack Developer, you should be comfortable around both front-end and back-end development (predominantly in Javascript), development frameworks and third-party libraries. You will be responsible for the full software development life cycle, from conception to deployment.
Responsibilities
Design and deployment of database and backend storage systems (eg. relational database, key-value/blob stores) Design and implementation of low-latency, high-availability, and performant applications Design and construction of REST APIs Integrating front-end UI with the constructed APIs “Pixel-perfect” implementation of approved UI and designs Building reusable components and front-end libraries for future use Design and implementation of continuous integration and deployment Test software to ensure responsiveness and efficiency Implementation of security and data protection Integration with third-party services and software
Required Skills & Experience
At least three years’ experience with: Writing HTML, CSS, and JavaScript. Being up on latest practices is a must, e.g., HTML5, CSS3, and ECMAScript 6 (minimum) Back-end development with Node.js Front-end development with Vue.js Database design and management with PostgreSQL Highly proficient with the JavaScript language and its modern ES6+ syntax and features Understanding the nature of asynchronous programming and its quirks and workarounds Highly proficient with Vue.js framework and its core principles such as components, reactivity, and the virtual DOM Experience with development & deployment using containerisation technology (eg. Docker) Experience with cloud infrastrastructure management & deployment on AWS (eg. ECS, Lambda, SQS, SNS, Kinesis) Familiarity with automated JavaScript testing, specifically testing frameworks (eg. Jest or Mocha) Familiarity with CSS preprocessors, bundlers, and associated languages/syntaxes/libraries (eg. Sass, Less, Webpack) Proficient understanding of code versioning tools (eg. Git) Ability to understand business requirements and translate them into technical requirements Open-mindedness and ability to learn new programming languages & tools to best serve the project at hand Appreciation for clean and well documented code Excellent verbal & written communication skills
Preferred Skills & Experience
Experience with React.js & TypeScript will be highly regarded Knowledge of other backend languages such as Golang, Rust, OpenResty Experience with adtech/martech technology Experience with Machine Learning/AI/Data Science Experience working with large scale/high traffic applications Experience with other cloud infrastructure providers (eg. Google Cloud, Azure) We offer flexibility and a strong team culture with additional leave and health benefits for your location. We can't wait to see your application
Good for you to have
UI_UX Engineer (Cloud platform)
MVC Framework (Desirable): Grails, Struts or Spring MVC
Scripting (Desirable): Groovy, Perl, python, shell or ruby.
You will definitely possess these technical skills
Core skill set (must): JavaScript, AJAX, HTML, CSS, MySQL, Core Java, J2EE technologies
Working Knowledge (must): Web application development.
Good knowledge of data structures and algorithms.
Application Server: JBoss/Wild-fly, Web logic or Web sphere
Tools (Must): JavaScript debuggers.
Having experience in developing both front-end and back-end in .Net Projects.
Strong knowledge of .NET web framework preferably the latest version.
Strong Knowledge on MVC, Web Services, Entity Framework, Store Procedure and LINQ.
Proficient in C#, with a good knowledge of their ecosystems.
Strong understanding of object-oriented programming.
Skill for writing reusable libraries.
Familiar with various design and architectural patterns.
Knowledge of concurrency patterns
Familiarity with Microsoft SQL Server.
Experience/Knowledge in popular web application frameworks such as Angular2.
Understanding of fundamental design principles for building a scalable application.
Basic understanding of Common Language Runtime (CLR), its limitations, weaknesses, and workarounds.
Experience/Knowledge in implementing automated testing platforms and unit tests
Having experience in Angular 2 ( type script), SQL and web services is A MUST
Proficient understanding of code versioning tools preferably Git.
Willingness to learn new technologies.
his position lets you work from the comfort of your home. You would be required to work from 2:00 pm to 10:00 pm. You will receive 12 personal times off during the year. You would have to be available via skype during those times. The ideal candidate would have to know a lot about seo and code to fix issues that are required on google. You would be working on projects from job boards to crm to websites. Your primary job would be to write code. AWS operating systems knowledge is a requirement. But this position would be a lead position to get the job done.
Must have experience with google search engines.
Full Stack Developer Responsibilities:
Proficiency with server side languages such as html, Python, React, Ruby, Java, PHP and .Net. Django
- Developing front end website architecture.
- Designing user interactions on web pages.
- Developing back end website applications.
- Creating servers and databases for functionality.
- Ensuring cross-platform optimization for mobile phones.
- Ensuring responsiveness of applications.
- Working alongside graphic designers for web design features.
- Seeing through a project from conception to finished product.
- Designing and developing APIs.
- Meeting both technical and consumer needs.
- Staying abreast of developments in web applications and programming languages.Full Stack Developer Requirements:
- Degree in Computer Science.
- Strong organizational and project management skills.
- Proficiency in Python CRM application
- Proficiency with fundamental front end languages such as HTML, CSS and JavaScript.
- Familiarity with html, JavaScript frameworks such as Angular JS, React and Amber.
- Familiarity with database technology such as MySQL, AWS, Oracle and MongoDB.
- Excellent verbal communication skills.
- Good problem solving skills.
- Attention to detail.











