Full Stack Engineer

Finarb; Kolkata District; Hybrid; INR 1,000,000 - 2,000,000; Full time

Job summary

Finarb in Kolkata is seeking a senior full-stack developer to own the architecture and building of web applications and AI products. This role includes working with both TypeScript/Node and Python, as well as deploying to AWS or Azure. The ideal candidate will have 3-5 years of experience in full-stack development and will work closely with cross-functional teams.

Responsibilities include designing, building, and shipping features, integrating LLM capabilities, and ensuring code quality through testing and reviews. Preferred qualifications include experience with AI/LLM applications and infrastructure-as-code practices.

Qualifications

• 3-5 years of full-stack development experience.
• Solid backend experience building APIs.
• Familiarity with software engineering best practices.

Responsibilities

• Design and build full-stack features across all layers.
• Develop and integrate REST/GraphQL APIs.
• Deploy and maintain applications on cloud infrastructure.

Skills

Node.js backend development

Python backend development

SQL and relational database skills

Git and CI/CD practices

Problem-solving skills

Education

Bachelor's or Master's in Computer Science, Engineering, or related field

Tools

AWS

Azure

Git

Job description

About the Role

You\'ll own features end to end — from data model and API to UI and deployment — across our web applications and AI products. This is a hands-on senior role: you\'ll architect and build full-stack systems, integrate LLM-driven capabilities (agents, retrieval, tool/function calling), and take responsibility for quality, performance, and shipping. You\'ll work in both TypeScript/Node and Python ecosystems depending on the engagement, deploy to AWS or Azure, and collaborate closely with data scientists, designers, and client stakeholders.

Responsibilities

• Design, build, and ship full-stack features across frontend, backend, and data layers.
• Build and consume well-designed REST/GraphQL APIs and services; model the data behind them.
• Develop modern, responsive UIs and the server-side logic that powers them.
• Integrate LLM/AI capabilities into applications — agents, retrieval-augmented generation, tool/function calling, and orchestration.
• Deploy, monitor, and maintain applications on cloud infrastructure (AWS or Azure).
• Own code quality through reviews, testing, and sound engineering practices.
• Collaborate with data scientists, analysts, designers, and stakeholders to translate requirements into working software.
• Contribute to architectural decisions and continuous improvement of the team\'s standards and tooling.

Basic Qualifications

• Bachelor\'s or Master\'s in Computer Science, Engineering, or a related field — or equivalent practical experience.
• 3–5 years of hands-on full-stack development experience.
• Solid backend experience in Node.js and/or Python, building and integrating APIs and services.
• Strong SQL and relational database skills; comfortable with schema design and data modeling.
• Experience deploying and running applications on a major cloud platform (AWS or Azure).
• Familiarity with Git, CI/CD, and modern software engineering best practices.
• Strong problem-solving and debugging skills; effective communicator in a cross-functional team.

Preferred Qualifications

• Hands-on experience building AI/LLM-powered applications — frameworks such as LangGraph or LangChain, the MCP (Model Context Protocol), or agent/RAG architectures.
• Infrastructure-as-code (CDK, SST, Pulumi, Bicep, or Terraform) and container/serverless deployment (ECS, Lambda, Container Apps).
• Experience with serverless and edge frameworks (e.g. SST, OpenNext) and full-stack platforms like Next.js in production.
• Exposure to NoSQL, vector stores, or other AI-adjacent data infrastructure.
• Familiarity with Go or Rust.
• BI/visualization or data-product experience.
• Awareness of data governance and handling of sensitive data (PII/PHI), and compliance frameworks (SOC 2, HITRUST) — relevant for our healthcare and finance clients.