Senior Fullstack (React, Node, APIs) Developer

Job Title : Full Stack Engineer (Python + React.js/Next.js)

Experience : 1 to 6+ Years

Location : Bengaluru (Indiranagar)

Employment : Full-Time

Working Days : 5 Days WFO

Notice Period : Immediate to 30 Days

Role Overview :

We are seeking Full Stack Engineers to build scalable, high-performance fintech products.

You will work on both frontend (Typescript/Next.js) and backend (Python/FastAPI/Django), owning features end-to-end and contributing to architecture, performance, and product innovation.

Main Tech Stack :

Frontend : Typescript, Next.js, React

Backend : Python, FastAPI, Django

Database : PostgreSQL, MongoDB, Redis

Cloud : AWS/GCP, Docker, Kubernetes

Tools : Git, GitHub, CI/CD, Elasticsearch

Key Responsibilities :

• Develop full-stack applications with clean, scalable code.
• Build fast, responsive UIs using Typescript, Next.js, React.
• Develop backend APIs using Python, FastAPI, Django.
• Collaborate with product/design to implement solutions.
• Own development lifecycle: design → build → deploy → monitor.
• Ensure performance, reliability, and security.

Requirements :

Must-Have :

• 1–6+ years of full-stack experience.
• Product-based company background.
• Strong DSA + problem-solving skills.
• Proficiency in either frontend or backend with familiarity in both.
• Hands-on experience with APIs, microservices, Git, CI/CD, cloud.
• Strong communication & ownership mindset.

Good-to-Have :

• Experience with containers, system design, observability tools.

Interview Process :

1. Coding Round : DSA + problem solving
2. System Design : LLD + HLD, scalability, microservices
3. CTO Round : Technical deep dive + cultural fit

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

Role: Sr Full Stack SW Developer

Location: Okhla, New Delhi

Experience: Minimum: 7 Years

In this role, the person will be responsible for developing and implementing solutions using React.js, Node Js, JSX, Expressand MySQL concepts, and workflows such as Redux, Flux, and Webpack. The candidate will also be responsible for profiling and improving front-end & back-end performance and documenting our codebase. A top-class React.js Developer should be able to design and build modern user interface components to enhance application performance.

Responsibilities

• Ability to translate Wireframes and PSD Designs into functional web apps using HTML5, React, Redux, JavaScript, TypeScript, Node.js, Express, JSX, and MySQL.
• Creating RESTful services with Node.js & MySQL.
• AWS (Amazon Web Services) development & services like EC2, CloudFront, S3, load balancer, etc.
• Architect scalable web architectures.
• Work in a cross-functional team to deliver a complete user experience.
• Create Unit and Integration tests to ensure the quality of code.
• Be responsive to change requests and feature requests.
• Mentor junior members of the team*
• Managing & Integrating Amazon Web Services*
• Managing 3rd party software tools & subscriptions*

Requirements

• Detail-oriented experience as a Full Stack Developer/Lead creating React, Redux, Node js and (RDBMS) MySQL-based solutions.
• Ability to work both independently and in collaborative teams to communicate design and build ideas effectively.
• Fluent knowledge of the latest HTML/CSS, JavaScript & Typescript standards, and best practices.
• Strong hands-on of Node.js, Express server, and RESTful web APIs.
• Strong Hadson of MySQL or any other SQL-based RDBMS.
• Strong Hands-on in integrating AWS services into the application. AWS developer certificate will be a plus but not mandatory.
• Solid understanding of HTTP protocol and how server-side code is processed on the client.
• Working knowledge of front-end optimization and performance techniques.
• Obsession with lean, clean, and organized front-end code.
• Cross-browser development and troubleshooting.
• Experience building Responsive websites for web, tablet, and mobile devices.
• Good understanding of overall web design including basic usability, accessibility, industry standards, architecture, and navigation.

Roles :-

• 5+ years' experience in back end development with Angular.
• Experience and flexibility to work on backend or frontend tech stack depending on the project backlog.
• Strong experience in Databases and API Integration
• Having good experience with back-end programming languages like Node.JS, PHP, Python, Express.js, Angular, React, HTML/CSS, JavaScript, XML
• Exposure to the product development on AWS cloud platforms/Third party API integration and payment gateways
• Knowledge of code versioning tools (such as Git)
• Knowledge of multiple JavaScript frameworks and libraries (e.g. Bootstrap, jQuery)
• Familiarity with databases (e.g. MySQL, MongoDB)
• Knowledge of API design and development
• Excellent communication and teamwork skills and Ability to perform under pressure

Responsibilities :-

• Developing front end website architecture.
• Ensuring cross-platform optimization for mobile phones.
• Designing user interactions on web pages.
• Developing back end website applications.
• Creating servers and databases for functionality

Technical Skills:- Angular, Nodejs, Python/PHP, MongoDB/Mysql, API

Notice Period:- 1 month or less (immediate joiner - Preferred )

Location: Noida, Work From Office

About Us

We have grown over 1400% in revenues in the last year.

Interface.ai provides an Intelligent Virtual Assistant (IVA) to FIs to automate calls and customer inquiries across multiple channels and engage their customers with financial insights and upsell/cross-sell.

Our IVA is transforming financial institutions’ call centers from a cost to a revenue center.

Our core technology is built 100% in-house with several breakthroughs in Natural Language Understanding. Our parser is built based on zero-shot learning that helps us to launch industry-specific IVA that can achieve over 90% accuracy on Day-1. 

We are 45 people strong with employees spread across India and US locations. Many of them come from ML teams at Apple, Microsoft, and Salesforce in the US along with enterprise architects with over 20+ years of experience building large-scale systems. Our India team consists of people from ISB, IIMs, and many who have been previously part of early-stage startups. 

We are a fully remote team.

Founders come from Banking and Enterprise Technology backgrounds with previous experience scaling companies from scratch to $50M+ in revenues.

As a SDE III, you will be :

1. Designing and implementing FullStack applications of interface.ai’s conversational AI platform and playing a significant role in evolving them.
2. Working with a team of driven and passionate engineers working on cutting edge technology, who take pride in solving complex problems.
3. Engaging in cross-functional team discussions on Product, design, QA, deployment and maintenance,  in a fast-moving collaborative set up.
4. Building reusable code and libraries for future use
5. Analyzing high level requirements, breaking it down into workable/demoable tasks, estimating them and delivering with high quality.
6. Contributing to improve our engineering processes, tooling, and standards.

1. Are extremely self motivated
2. Have ability to learn quickly
3. Have a growth Mindset (read this if you don't know what it means - https://www.amazon.com/Mindset-Psychology-Carol-S-Dweck/dp/0345472322" target="_blank">link)
4. Have Emotional Maturity (read this if you don't know what it means - https://medium.com/@krisgage/15-signs-of-emotional-maturity-38b1a2ab9766" target="_blank">link)
5. Are Passionate about the possibilities at the intersection of AI + Banking
6. Have worked in a startup of 5 to 30 employees
7. Have outstanding problem-solving abilities
8. Have proactive outlook for ways to make the solution better
9. Have 5+ years of experience in delivering scalable complex technical products
10. Have Good knowledge of distributed technologies, low latency, and highly scalable systems. 
11. Have Expertise in JavaScript and Node.js
12. Have Hands-on experience in Node.JS / Express.JS / Hapi.js / Koa.js (or any other Web Framework), and Relational Databases (preferably PostgreSQL)
13. Have Expertise with unit testing & Test Driven Development (TDD)
14. Have Hands-on experience in Mocha or other Javascript testing frameworks
15. Have experience working with react, python (Nice to have)
16. Have hands-on experience in developing applications using microservices, container technologies, container management systems such as Kubernetes
17. Have a strong understanding of systems using real-time interactions (web sockets, long-polling, server-sent events)
18. Have hands-on experience in the Implementation of security and data protection
19. Are eager to learn new technologies
20. Have excellent written and verbal communication skills, including the ability to write detailed technical documents.
21. Are passionate about helping teams grow by inspiring and mentoring engineers

• Someone’s traveling to airport/office/home - can we suggest them public transport routes with first mile & last mile and accurate tracking of the individual leg of the journey
• Someone’s new in the city - can we help them travel from A to B in the most efficient way
• Someone’s planning to not use their private vehicle for the commute - can we design an efficient and reliable system to plan their commute with accurate information of public and private transport
• Transition people from private to hybrid multimodal commute
• Someone's traveling home late at night - can we give their friends, family peace of mind?
• Build a single mobile ticket for the entire journey

What you’ll do

• Build the backend and deploy systems powering the app
• Improve routing across 10+ cities for everything from walking to trains to electric scooters to metro to bus to auto to bike
• Integrate new private transport companies and new ways of getting about our cities
• Develop smarter ways of integrating the payment systems with the app
• Extract, process and crunch together departure times, travel habits, and pricing information and suggest reliable results to users
• Create experiences that delight your friends, family, and millions of new commuters when they come and visit your city
• Design and build systems that scale on demand and are secure
• Deploy and support your code on AWS
• Best practices: code reviews, tests, CI
• Teach us how to be better our Stack (Required) Java (Spring Boot), Postgres, MongoDB, ReactJs, Golang Microservice Nginx, API Gateway, Load Balancer, Kafka, Redis, Websockets, Docker, Kubernetes, Git, AWS - EC2, RDS, s3, lambda Optional Nodejs(Express)

We are looking for strong tech leaders to drive the platform and product to the next level. We are looking for seasoned technical leaders from .NET background with experience in building cloud-based web applications and products. The role involves understanding business requirements, customer problems, architecting the appropriate solutions that are secure, scalable, high performing and testable.

Requirements: 

• Passion for building and delivering great software with a strong sense of ownership, while working closely with juniorteam members.
• 6+ years of experience in building web applications using ASP.NET MVC and .NET platform in general.
• Experience of architecting and designing web applications and services
• Experience in building applications on .NET Core, is a great plus
• Should have strong UI development skills using HTML, CSS/JavaScript frameworks.
• Strong experience with Build and Release, Agile processes and Estimation/Planning
• Exposure to New Relic or similar tools to optimize web application performance
• Strong expertise in SQL programming, with experience of writing & optimizing queries that access/process millions of records
• Good to have experience in building workflow engine from scratch.
• Understanding and experience of working with Product Management, Design and DevOps teams.