Junior Fullstack AI Engineer

LIFESIGHT TECHNOLOGIES PRIVATE LIMITED; Bengaluru; On-site; INR 600,000 - 900,000; Full time

Benefits offered by this job

Health insurance

Daily breakfast

Weekday lunches

Fun O’Clock Fridays

Job summary

LIFESIGHT TECHNOLOGIES PRIVATE LIMITED is looking for a Junior Fullstack AI Engineer to help design, develop, and deploy innovative AI-native products. You will work across the entire stack to create scalable web applications and robust backend systems that integrate large language models and advanced data technologies.

This role offers an exciting opportunity to grow within a dynamic team in Bengaluru, India, and helps shape the product from the ground up. Competitive pay and great benefits are included.

Qualifications

• 1–3 years of experience building and shipping production software.
• Strong programming skills in modern frameworks such as React or Next.js.
• Experience deploying applications using cloud platforms.

Responsibilities

• Design and implement end-to-end features across frontend, backend, and data layers.
• Develop reliable APIs, services, and backend systems used in production.
• Collaborate with product, design, and engineering teams.

Skills

Programming in React

Building fullstack applications

API design and integration

Experience with cloud platforms

Debugging and problem-solving

Education

Bachelor’s degree in Computer Science or Engineering

Tools

Docker

FastAPI

GitHub Actions

Job description

Working Model: Work From Office (5 days)

About Us

Lifesight is a fast-growing SaaS company focused on helping businesses leverage data & AI to improve customer acquisition and retention. We have a team of 130 serving 300+ customers across 5 offices in the US, Singapore, India, Australia, and the UK.

Our mission is to make it easy for non-technical marketers to leverage advanced data activation and marketing measurement tools that are powered by AI, to improve their performance and achieve their KPIs. Our product is being adopted rapidly globally and we need the best people onboard the team to accelerate our growth.

About the Role

We are seeking engineers to help build the next generation of AI-native products. As a Junior Fullstack AI Engineer, you will design, develop, and deploy production systems that integrate modern web technologies with large language models and intelligent agents.

You will operate across the entire stack from frontend interfaces to backend systems, data infrastructure, and AI orchestration contributing to products used at scale. This role requires strong engineering fundamentals, high ownership, and the ability to translate ambiguous problems into reliable, scalable systems. Your work will deliver robust, secure, and high-quality AI-powered applications.

What You Will Do

Build Production-Quality Systems

• Design and implement end-to-end features across frontend, backend, and data layers
• Build scalable, performant web applications using modern frameworks
• Develop reliable APIs, services, and backend systems used in production
• Write clean, maintainable, and well-tested code

Develop AI-Powered Applications

• Integrate and deploy LLM-based features using providers such as OpenAI, Anthropic, or Gemini
• Design prompts, system instructions, and structured outputs for reliability and correctness
• Implement agent workflows, tool calling, and multi-step reasoning systems
• Build retrieval-augmented generation (RAG) pipelines using embeddings and vector search
• Build and maintain backend services, data pipelines, and integrations
• Design database schemas and optimize queries for performance and scalability
• Implement caching, asynchronous processing, and background job systems
• Ensure system reliability, fault tolerance, and observability

Collaborate with Teams

• Work cross-functionally with product, design, and engineering teams
• Participate in design reviews, code reviews, and technical discussions
• Contribute to engineering standards, tooling, and architecture decisions
• Continuously improve engineering velocity, reliability, and developer experience

Required Qualifications

• Bachelor’s degree in Computer Science, Engineering, or related technical field, or equivalent practical experience
• 1–3 years of experience building and shipping production software
• Strong programming skills in at least one of:
  • Experience building fullstack applications using modern frameworks (React, Next.js, FastAPI, or similar)
  • Experience building AI-powered applications using LLM APIs with retrieval-augmented generation (RAG), embeddings, or vector databases
  • Experience designing and integrating REST APIs and backend services
  • Experience working with relational or NoSQL databases
• Understanding of software engineering fundamentals, including:
  • Data structures and algorithms
  • API design and system architecture
• Strong debugging, problem-solving, and analytical skills
• Experience deploying applications using cloud platforms and familiarity with containerization (Docker) and CI/CD systems

Technical Stack

Frontend

React, Next.js, TypeScript, TailwindCSS

Node.js, Python, FastAPI, REST, GraphQL

Infrastructure

Docker, Vercel, Cloud Run, GitHub Actions

Observability

Logging, monitoring, tracing, and performance instrumentation

Benefits

Early impact – Help shape the tech stack and build products from the ground up. Agile culture – Small teams, zero bureaucracy.

Great benefits – Competitive pay, health insurance, daily breakfast, weekday lunches, Friday team lunch, Fun O’Clock Fridays, and unlimited coffee, tea & snacks.