Fullstack Engineer - Contract - Highly Competitive Comp - Immediate Start

Weekday AI (YC W21); India; On-site; INR 4,000,000 - 9,500,000; Full time

Job summary

Weekday AI (YC W21) is seeking a Full-Stack Product Engineer in India, remote. You will own the product from frontend experiences to backend systems and infrastructure. The role offers a path to Lead Engineer with team-building responsibilities.

You’ll work hands-on, shaping architecture, tooling, and the technical roadmap with strong ownership and rapid execution bias.

Qualifications

• 4+ years of experience as a software engineer, with full-stack focus.
• Experience delivering end-to-end products from frontend to backend.

Responsibilities

• Own the product end-to-end across frontend, backend, database, and deployment.
• Build modern frontend experiences using TypeScript, React, and Vite.
• Develop scalable backend services using TypeScript.
• Design and manage production apps deployed on Vercel with Supabase/PostgreSQL.
• Create and maintain account infrastructure for 100+ active accounts.
• Build AI-powered content generation and automation workflows.

Skills

TypeScript

React

Product engineering

System design

UX

AI/automation

Leadership potential

Autonomy

Tools

Vite

Vercel

Supabase

PostgreSQL

Frontend/backend TS

Job description

This role is for one of the Weekday's clients

Salary range: Rs 4000000 - Rs 9500000 (ie INR 40-95 LPA)

Experience: 4+ yrs

Location: Remote (India)

Job Type: Full-time

We are looking for an exceptional Full-Stack Product Engineer to take end-to-end ownership of a fast-growing, AI-powered product. This role combines product engineering, systems design, AI, automation, UX, and technical leadership, requiring strong technical judgment and a bias toward rapid execution.

You will initially operate as a hands-on, highly autonomous engineer, owning the product from frontend experience through backend systems and infrastructure. For the right individual, this opportunity can evolve into a Lead Engineer position with responsibility for building and leading the future engineering team.

Requirements

Key Responsibilities

• Own the product end to end across frontend, backend, database, infrastructure, and deployment
• Build and maintain modern frontend experiences using TypeScript, React, and Vite
• Develop scalable backend services using TypeScript
• Design and manage production applications deployed on Vercel with Supabase/PostgreSQL
• Build reliable account infrastructure capable of managing and operating 100+ active accounts at scale
• Design and develop an AI-powered UGC/content-generation engine focused on producing high-performing short-form content
• Build internal systems and operational tools that enable teams to manage account and content workflows efficiently at scale
• Develop and maintain agentic integrations, including MCP-based infrastructure and integrations with modern AI agent ecosystems
• Make key architectural decisions around technology, system design, tooling, scalability, reliability, and engineering trade-offs
• Balance rapid product development with building systems that can scale as users and revenue grow
• Work closely with the founder to shape the product and technical roadmap
• Engage with users, understand product needs, and translate insights into impactful product improvements
• Identify opportunities to embed AI and automation across both the product and engineering workflows
• Establish engineering standards, development practices, and technical processes as the organization scales
• Take ownership of technical quality, reliability, performance, and maintainability across the product
• Build, hire, mentor, and eventually lead the engineering team as the company grows

What Makes You a Great Fit

• 4+ years of experience as a strong full-stack or product-focused software engineer
• Proven ability to build and ship products end to end, from user-facing interfaces to backend systems and data infrastructure
• Deep hands-on expertise with TypeScript across the stack
• Strong experience with React, Vite, backend TypeScript, Vercel, Supabase, and PostgreSQL in production environments
• Experience designing scalable, reliable, and maintainable production systems
• Strong understanding of product engineering, UX, system architecture, and technical trade-offs
• Strong product instinct with the ability to think in terms of user journeys, experiences, outcomes, and business impact, rather than simply individual technical components
• Deep familiarity with short-form content and social media, with a strong instinct for identifying what content works and why
• Experience building or integrating AI-powered products, automation systems, or agentic workflows is highly desirable
• Strong understanding of modern AI tooling and architectures, including MCP or similar agentic integration frameworks, is an advantage
• Highly autonomous with a strong sense of ownership and the ability to operate effectively as a solo technical builder
• Exceptional problem-solving and architectural judgment, with the ability to make pragmatic decisions under ambiguity
• Strong bias toward execution, experimentation, and rapid iteration without compromising engineering fundamentals
• Ability to work closely with founders and senior stakeholders and contribute meaningfully to product strategy and technical vision
• Entrepreneurial mindset with the ambition to build technical advantages, move quickly, and create scalable systems
• Demonstrated potential and interest in eventually building and leading an engineering team