Senior Full Stack Developer (MERN Stack + Python)

About the job

We are looking for a highly skilled Senior Full Stack Developer (MERN + Python) with 5+ years of hands-on experience to join our fast-growing Fintech & SaaS development team. You will play a key role in designing, developing, and maintaining scalable web applications that handle GST compliance, invoicing, payments, lending, accounting, and other financial workflows. Key Responsibilities • Lead the design, development, and deployment of end-to-end features using the MERN stack (MongoDB, Express.js, React.js, Node.js) • Build responsive, performant, and secure front-end experiences with React.js (Hooks, Context API, Redux / Mobx / Zustand) • Develop robust RESTful APIs and backend services using Node.js + Express.js • Design and optimize MongoDB schemas and queries for high-volume financial transactions • Integrate third-party financial APIs (Payment Gateways, Banking APIs, GSTN APIs, etc.) • Ensure code quality, perform code reviews, and mentor junior developers • Collaborate with UI / UX designers, product managers, and DevOps teams • Write unit, integration, and end-to-end tests (Jest, Mocha, Cypress, etc.) • Deploy and maintain applications on cloud platforms (AWS / GCP / Azure) Required Skills & Experience • 5–10 years of proven experience as a Full Stack Developer with strong expertise in MERN stack • Deep understanding of React.js (v16.8+) – Hooks, Context, Suspense, Concurrent Mode • Strong backend development experience with Node.js + Express.js • Expertise in MongoDB (Aggregation Pipeline, Indexes, Transactions) • Solid understanding of RESTful API design principles and best practices • Experience with modern authentication (JWT, OAuth2, Session management) • Proficient in Git, CI / CD pipelines, Docker • Fintech domain knowledge (GST invoicing, e-Invoicing, TDS, reconciliation) is a big plus • Familiarity with modern tools & frameworks (Redux Toolkit, Vite, Next.js optional) Good to Have • Hands-on experience with FastAPI (Python) and building high-performance REST / GraphQL APIs • Experience with Blockchain development especially Solidity programming will be a plus • Exposure to microservices architecture • Knowledge of Next.js (App Router / Pages Router) • Experience with Redis, RabbitMQ / Kafka, Elasticsearch • Understanding of Indian GST laws & compliance workflows • Contribution to open-source projects or strong GitHub portfolio.

Requirements

• MERN Stack
• Python
• React.js
• Node.js
• Express.js
• MongoDB
• AWS
• GCP
• Azure
• RESTful API

Preferred Technologies

• MERN Stack
• Python
• React.js
• Node.js
• Express.js
• MongoDB
• AWS
• GCP
• Azure
• RESTful API

About the company

AskGalore is a forward-thinking Artificial Intelligence and Blockchain development company dedicated to delivering high-quality products and services. The company specializes in Machine Learning, AR / VR, Data Science, Blockchain development, and has expertise in areas like DeFi, FinTech, ESG, and SaaS product development. AskGalore also supports clients with growth marketing solutions, leveraging SEO expertise and performance marketing. Their product portfolio includes 3D AI agents, AI chatbots for sales and customer service, AISEO, and NFT tools. With a strong commitment to results, AskGalore focuses on creating contemporary and impactful value for its clients.