Senior FullStack Engineer

About the Role

SwitchKart is on a mission to make technology more accessible and more sustainable — we're in the business of recommerce, giving old smartphones a second life, cutting down e-waste, and extending the lifecycle of every device we touch.

We're looking for a Junior Full Stack Developer who's eager to learn, build, and grow with us. You'll work closely with senior engineers on real features across our procurement app, retailer app, pricing engines, and warranty systems, gaining hands-on experience across a diverse product ecosystem.

What You'll Do

• Build Features: Work on both frontend and backend tasks across our suite of products, under guidance from senior engineers.

• Write Clean Code: Contribute well-tested, maintainable code to our React and Node.js codebases.

• Build AI-First: Get hands-on with building features that use AI at the core — not bolted on. You'll learn to think about where AI can automate, assist, or enhance what you're building.

• Learn the Stack: Get hands-on with our databases, APIs, and deployment processes across multiple applications.

• Collaborate: Participate in code reviews, stand-ups, and sprint planning.

• Debug and Fix: Troubleshoot issues across the stack and ship fixes.

• Adapt and Grow: Adapt quickly and positively in a fast-changing environment with tight timelines, and stay open to learning new tools and technologies as our stack evolves

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What We're Looking For

Must Have

• 2+ years of full stack development experience

• Working knowledge of React and Node.js

• Basic understanding of relational databases (PostgreSQL/MySQL)

• Eagerness to learn and grow quickly

• Strong fundamentals in data structures and problem-solving

Good to Have

• Personal projects or open-source contributions

• Exposure to REST APIs

• Familiarity with Git and collaborative workflows

• Exposure to cloud platforms (AWS/GCP)

Why SwitchKart

• Hands-on learning with real ownership from day one.

• Access to the latest AI coding agents and tools — we invest in keeping our engineers on the cutting edge.

• Work closely with senior engineers who'll help you grow.

• Be part of a genuinely differentiated business with real impact.

• Fast-moving team where you'll learn quickly and see your work ship.

About the Role: We’re looking for a Full-Stack Developer who is comfortable working across both web and mobile platforms to join our growing tech team. You will be responsible for developing user-facing applications, building scalable backend services, and deploying high-quality digital experiences that impact real users. This is an exciting opportunity to work in a dynamic startup environment, where you’ll play a critical role in shaping both product and technology. You’ll collaborate closely with our design, backend, and product teams to develop and maintain new features across our platforms. We’re not just looking for a coder - we’re looking for someone passionate about solving problems, learning fast, and building user-first experiences across devices.

Responsibilities: Web Development Develop responsive web interfaces using React.js, JavaScript, HTML, and CSS. Optimize frontend performance for mobile and desktop platforms. Work closely with UI/UX designers to implement intuitive user experiences. Mobile App Development Build and maintain cross-platform mobile apps using React Native (or Flutter, if applicable). Ensure smooth user experience and performance across Android and iOS devices. Manage versioning, updates, and publishing to Play Store and App Store. Backend Development Develop and maintain backend APIs using Node.js and Express.js. Integrate with MongoDB / MySQL databases for data persistence. Work with third-party APIs and handle authentication, authorization, etc. DevOps & Deployment Handle app deployment pipelines and basic CI/CD workflows. Monitor, debug, and resolve production issues. Use Git and version control best practices for code collaboration.

Bonus Skills (Nice to Have): Experience with TypeScript, Firebase, AWS, or Expo Familiarity with push notifications, in-app purchases, etc. Basic knowledge of server-side rendering or Next.js Experience with analytics, performance monitoring, or testing frameworks

Lantern Pharma is looking for talented and highly motivated R Shiny based front end web application developers to visualize the data analyzed / reports generated using bioinformatics pipelines. Leveraging your background and applying software engineering principles, to develop applications and tools in support of data visualization and reporting using R / R Shiny. You will be involved in generating complex graphs used for statistical analysis and interpretation using interactive libraries such as Plotly. In addition to development of new code, you will support and maintain standard R programs, which will comprise a library of code to be used for future development. This is a 6 months contract position (40 hrs / week) with possibilities of full time employment based on performance.

RESPONSIBILITIES:

• Design and develop interactive web applications using R / R Shiny to visualize ML outputs, multi-omics data and reports generated by bioinformatics pipelines
• Use the open-source or proprietary R libraries to build useful applications and packages
• Write efficient, clean and well tested code that adheres to best practices
• Organize data, analysis, reports, and applications into reproducible pipelines
• Test and debug applications to ensure they are working correctly, using both manual and automated testing techniques
• Stay up-to-date with the latest R packages and developments in the pharma industry
• Publish R packages to internal company repository
• Deploy and maintain the R Shiny web-application on the AWS server

BASIC QUALIFICATIONS:

• Bachelor's degree required (Master’s degree preferred) in a scientific discipline such as Statistics, Computer Science, Bioinformatics etc.
• Minimum 2 years of R / R Shiny, R Markdown experience with standard packages for data visualization and analysis
• Proven ability of building interactive R-shiny application (demo of the R-shiny application)
• Proficient in libraries such as ggplot2, plotly, dplyr, Highcharter and DT
• Must have experience in generating and working with R markdown reports
• Experience of AWS to host R shiny application is a plus
• Knowledge of cancer biology, genomics and drug development is a plus
• Familiarity with JavaScript, HTML, CSS, Python a plus
• Experience in building a database using Relational / Non relational Database (SQL / NoSQL)
• Must be capable of developing collaborative relationships with colleagues
• Must be self-motivated and have strong analytical, interpersonal, and project management skills
• Must demonstrate the ability to present ideas, issues, and observations in a clear manner

Lantern provides multiple growth opportunities and as an early team member, your work will have a direct impact on precision oncology that can transform drug development. In addition to attractive compensation, we offer employees the opportunity for competitive health, dental & vision insurance, stock options in a public company, an opportunity to take leadership on new and meaningful projects, & involvement with leading conferences & industry trade shows.

1. Develop back-end using Node.js, database (MongoDB, Elasticsearch, etc) other latest technologies
2. Take end-to-end ownership of modules
3. Get an opportunity to solve Edu-tech problem statements

1. Bachelor's degree in computer programming, computer science, or a related field.
2. Proven 3+ years of experience working as a Back-end developer.
3. Must have a good understanding of Node.Js, Javascript, and MongoDB.
4. Must have good knowledge of Data Structures and Algorithms.
5. Strong CS fundamentals and problem-solving skills is a must.
6. Excellent analytical and time management skills.
7. Interest in the game industry, since you will be working with people crazy for developing and playing games.

1. Familiarity with discord bot, no-code automation tools like Zapier, http://Automate.io">Automate.io, Airtable and their api’s is a plus.
2. A basic understanding of front-end technologies like React.js, HTML, CSS

• We are a funded start-up, recently closed our seed funding with Kalaari Capital and with a few renowned investors in past like - Village global, FirstCheque, some experience founders such as https://www.linkedin.com/in/anandc/">Anand (FB, Snapdeal), Srini (Founder, TutorVista), https://www.linkedin.com/in/ambareesh-murty-b35803/">Ambareesh (Founder, Pepperfry) and many more!
• We’re tackling a big problem with an even bigger potential to become a launchpad for the entire game industry globally. Participants in our existing cohorts say https://www.youtube.com/playlist?list=PLVOvwIVo57tlYxGB61mSpH22j3IvM3D_p">great things about us!

This role comes with:

✔️ Competitive Salary

✔️ Annual Bonus

✔️ Stock Options

✔️ Unlimited Leaves (oh yes! we don’t track leaves)

• You need to stay active and keep an eye on the regular updates
• Efficient time management is encouraged.
• Take ownership of your work and can work independently on assigned projects/tasks.

Jhandewalan, New Delhi

Qualifications

• 3+ years of experience in development using Python OR Node.js
• Experience with React.js

• Previous experience with Shopify customization is desirable
• Bachelor’s degree in computer science or related field

A highly motivated and passionate individual who has experience in executing end to end web based application projects and bringing them to production quickly and with high quality. Passionate about building flexible and scalable solutions with an eye for detail and can weigh pros and cons to find best possible solutions.

Responsibilities:

• Collaborate with Product Manager and Engineering Manager to plan, implement and deliver tasks and modules on a timely basis with best practices and adherence to SOPs.
• Understand the product specification and be able to ask questions and gather information and feedback to build a well rounded solution.
• Deliver end to end applications starting from front end web development, back end development, middleware integration and persisting data in no SQL or RDBMS databases.
• Should be able to use existing front-end components to build web based UI interfaces.
• Strong technical design approach to problem solving for backend services.
• Should be able to communicate and defend the tech design choices taken for long term scalability and maintainability.
• Play the role of an unblocker in a tight scrum environment.
• Should be able to help other developers with challenges and help achieve milestones as per plan.

• Prioritise to manage ad-hoc requests in parallel with ongoing projects.
• Document API specification, technical design and other key information for all projects/modules/services owned

Requirements:

• A highly talented developer with 4-7 years of hands-on experience in building secure and scalable web-based applications using Java in backend and JS-based frontend frameworks
• Strong knowledge of Java 8+, databases (SQL and NoSQL), MySql, Mongo
• Experience working with Cassandra, Spring Boot, Apache Spark, Kafka, RabbitMQ is highly desirable
• Working knowledge of any one or more of AngularJS/ReactJS/VueJS and CSS3, HTML5
• Strong experience in data modeling for data storage tools in SQL; experience with noSQL is highly desirable.
• Experience building scalable solutions for 2x, 5x and 10x growth with high quality and flexibility.
• Practitioner of test-driven development practices.
• Experience in creating and adhering to best practices for development
• Experience working with container technologies like Docker and knowledge of CI/CD processes for automated integration and deployment.
• Basic knowledge of AWS preferred
• Strong experience in Microservices (SRP) paradigm
• Willing to learn new technologies (Golang)

• Qualification B.Tech/M.Tech/MCA(IT/Computer Science)
• Years of Exp 4 - 7 years