Senior FullStack Engineer

flexai; Bengaluru; On-site; INR 2,800,000 - 5,500,000; Full time

Benefits offered by this job

Competitive salary

Cutting-edge AI infrastructure

High ownership and impact

Job summary

FlexAI in Bengaluru seeks a Senior FullStack Engineer to build end-to-end features across our Platform-as-a-Service. You will work on frontend UI layers, backend APIs, data models, and integrations with compute/infrastructure systems, shaping user experience and backend logic.

The role emphasizes independent work in a fast-paced environment, contributing to 1-click AI compute orchestration across cloud deployments.

Qualifications

• 5+ years of experience building Full Stack applications.
• Strong hands-on development experience with React + Python (true React-Python fullstack capability).
• Experience with fastapi, pydantic, sqlmodel, and modern async backend development.
• Deep understanding of vite, bun, and frontend build/performance optimization.
• Ability to manage frontend async workflows using react-query and complex data tables using react-table.
• Strong API design skills and comfort working across schemas, data models, and serialization layers.
• Experience building modular services and UI-driven systems with high data throughput.
• Ability to operate independently in a high-speed environment and take full ownership of features.
• Strong communication and cross-functional collaboration skills.

Responsibilities

• Build and ship end-to-end features across our platform (developer tools, marketplace, billing, admin).
• Develop high-performance UIs using React.
• Design and implement APIs and backend services using Python (FastAPI) and/or Node.js.
• Define clean, scalable contracts between frontend and backend.
• Work on data-intensive workflows (jobs, compute orchestration, resource management).
• Collaborate with platform and infrastructure teams to build reliable systems.
• Debug and optimize across the stack — from UI to backend performance.
• Own features end-to-end: design, build, ship, and operate.

Skills

React

Python

FastAPI

APIs

UI development

React-Query

React-Table

API design

Data-intensive workflows

Ownership

Tools

FastAPI

Pydantic

SQLModel

React

Vite

bun

frontend build optimization

Job description

About FlexAI

Build and Deploy AI the right way, anywhere.

The FlexAI Compute Infrastructure Platform provides an \"end-to-end AI compute layer\" for running and managing workloads across any cloud, any GPU, and any deployment model (public, hybrid, or on-prem). It brings together \"1-click simplicity\" for users with \"enterprise-grade orchestration, security, and automation\" under the hood.

Founded by Brijesh Tripathi, who bring experience from Nvidia, Apple, Tesla, Intel and Zoox, FlexAI is not just building a product – we’re shaping the future of AI. Our teams are strategically distributed across Silicon Valley and Bengaluru, united by a shared mission: to deliver more compute with less complexity.

If you're passionate about shaping the future of artificial intelligence, driving innovation, and contributing to a sustainable and inclusive AI ecosystem, FlexAI is the place for you !

Role Overview

FlexAI is looking for a Senior FullStack Engineer who can build end-to-end features across our PaaS platform — including

frontend UI layers, backend APIs, data models, and integrations with compute and infrastructure systems. You will work on developer modules Admin modules, Marketplace, and Licensing, shaping the user experience and backend logic.

What You’ll Do

• Build and ship end-to-end features across our platform (developer tools, marketplace, billing, admin)
• Develop high-performance UIs using React
• Design and implement APIs and backend services using Python (FastAPI) and/or Node.js
• Define clean, scalable contracts between frontend and backend
• Work on data-intensive workflows (jobs, compute orchestration, resource management)
• Collaborate with platform and infrastructure teams to build reliable systems
• Debug and optimize across the stack — from UI to backend performance
• Own features end-to-end: design, build, ship, and operate

What You’ll Need to Be Successful

• 5+ years of experience building Full Stack applications
• Strong hands-on development experience with React + Python (true React-Python fullstack capability).
• Experience with fastapi, pydantic, sqlmodel, and modern async backend development.
• Deep understanding of vite, bun, and frontend build/performance optimization.
• Ability to manage frontend async workflows using react-query and complex data tables using react-table.
• Strong API design skills and comfort working across schemas, data models, and serialization layers.
• Experience building modular services and UI-driven systems with high data throughput.
• Ability to operate independently in a high-speed environment and take full ownership of features.
• Strong communication and cross-functional collaboration skills.

Nice to Have

• Experience working with cloud APIs, compute runtimes, schedulers, or developer tooling.
• Knowledge of SRE concepts (Kubernetes, CI/CD, observability).
• Familiarity with licensing workflows or enterprise cloud marketplaces.

What We Offer

• A competitive salary and benefits package
• Work on cutting-edge AI infrastructure
• Build products used by developers and enterprises
• High ownership, fast execution, real impact
• Collaborative, high-caliber team