Full Stack Developer – Internship + Full-Time Opportunity

Company: KrinosAI – Dental AI Startup

Website: https://krinosai.com/

Internship Duration: 3 Months

Internship Type: Full-Time, On-Site

Internship Stipend: ₹10,000 – ₹15,000 per month

Future Opportunity: Full time Employment based on performance, technical capability, and successful completion of the internship

Full-Time Salary: To be determined based on demonstrated skill set, performance during the internship, technical ownership, and role responsibilities

About KrinosAI

KrinosAI is a healthcare technology company developing AI-powered solutions for dentistry, including dental imaging, computer vision, patient engagement, workflow automation, AI voice agents, clinical software, and intelligent healthcare applications.

Our engineering team works across full-stack development, artificial intelligence, cloud infrastructure, computer vision, automation, healthcare integrations, and advanced visualization.

We are looking for developers who want to work on real products rather than only academic or isolated development assignments.

About the Opportunity

We are looking for a Full Stack Developer Intern for an intensive 3-month full-time, on-site internship.

The internship is designed as an evaluation and development period for candidates who may subsequently join KrinosAI as Full-Time Full Stack Developers.

During the three months, candidates will work directly on live KrinosAI products and will be evaluated on:

· Technical capability

· Problem-solving ability

· Speed of learning

· Code quality

· Ability to independently complete tasks

· Frontend and backend development skills

· Debugging capability

· System-design understanding

· API integration skills

· Cloud and deployment knowledge

· Ownership and reliability

· Ability to work within an engineering team

Candidates demonstrating strong technical ability and ownership may receive a full-time employment offer after completion of the internship.

The compensation for the subsequent full-time position will be determined according to the candidate's demonstrated skills, performance, technical maturity, and responsibilities they can independently handle.

Key Responsibilities1. Frontend Development

Develop responsive, scalable, and production-ready applications using:

· React.js

· Next.js

· JavaScript

· TypeScript

· HTML

· CSS

· Modern UI libraries and component frameworks

You will be expected to:

· Convert UI/UX designs into working applications

· Develop reusable frontend components

· Integrate frontend applications with backend APIs

· Handle application state and authentication

· Develop responsive interfaces for desktop, tablet, and mobile

· Optimize page loading and frontend performance

· Debug browser and frontend application issues

1. Backend Development

Develop and maintain backend systems using technologies such as: · Node.js

· Express.js

· Python

· FastAPI

· Flask

· Django

Responsibilities may include

· Developing REST APIs

· Building application business logic

· Managing authentication and authorization

· Implementing background processes

· Managing application workflows

· Developing secure server-side functionality

· Building integrations with third-party services

· Writing scalable and maintainable backend architecture

1. Database Development

Work with relational and NoSQL databases including: · PostgreSQL

· MongoDB

· DynamoDB

· MySQL

· AWS RDS

Responsibilities include

· Database schema design

· Data modelling

· Writing efficient queries

· Database migrations

· Data validation

· Performance optimization

· Designing relationships between different application entities

1. API Development & Integration

Design and integrate APIs between different systems.

You may work on

· REST APIs

· Webhooks

· WebSockets

· Third-party APIs

· AI service APIs

· Healthcare software integrations

· Authentication APIs

· Communication APIs

· Internal microservices

Candidates should understand

· Request/response architecture

· API authentication

· Error handling





· API documentation

· Testing APIs

· JSON data structures

· Webhooks and asynchronous workflows

1. AI & Machine Learning Integration

The role does not require candidates to be dedicated ML engineers, but developers should be comfortable integrating AI systems into applications.

You may work with

· Computer vision models

· AI inference APIs

· LLM APIs

· Speech-to-text systems

· Voice AI

· Image-processing pipelines

· Python ML services

· AI-generated structured data

Responsibilities may include connecting AI/ML models developed by our AI team with production applications.

1. 3D & Medical Visualization

Depending on the project, candidates may work on interactive visualization using: · Three.js

· WebGL

· React Three Fiber

· 3D model rendering

· Medical-image visualization

· Interactive dental models

· Spatial interfaces

Experience with Three.js is an advantage but is not mandatory for candidates with otherwise strong development fundamentals.

Cloud & Deployment

Candidates will receive exposure to production cloud infrastructure and deployment.

Technologies may include

AWS

· EC2

· ECS

· Fargate

· S3

· RDS

· DynamoDB

· Cognito

· CloudFront

· Route 53

· API Gateway

· Lambda

· ECR

· CloudWatch

· Secrets Manager

· AWS IAM

· SageMaker

Deployment & DevOps

· Docker

· GitHub

· GitHub Actions

· CI/CD pipelines

· Vercel

· Nginx

· Environment configuration

· Production monitoring

· Development/staging/production environments

Candidates are not expected to know every technology before joining but should be willing to learn quickly.

Authentication & Security

Candidates may work with

· JWT

· OAuth

· Role-based access control

· User authentication

· Session management

· API authorization

· Secure environment variables

· Encryption concepts

· Secure cloud architecture

As KrinosAI operates in healthcare technology, developers will also gain exposure to building applications where security, privacy, reliability, and patient-data protection are important engineering considerations.

Git & Engineering Workflow

Candidates should be comfortable with:

· Git

· GitHub

· Branching

· Pull requests

· Code reviews

· Merge conflict resolution

· Issue tracking

· Collaborative development

Developers will be expected to maintain organized repositories and follow structured engineering practices.

Required Skills

Candidates should have a good understanding of:

· JavaScript

· React.js

· HTML/CSS

· Basic frontend development

· Node.js or Python backend development

· APIs

· Databases

· Git/GitHub

Candidates should have completed at least some practical projects independently or as part of academic/personal development.

We value demonstrable development ability more than certificates.

Preferred Skills

Experience with any of the following will be considered an advantage:

· Next.js

· TypeScript

· Node.js

· Express.js

· FastAPI

· Django

· Flask

· PostgreSQL

· MongoDB

· AWS

· Docker

· REST APIs

· WebSockets

· Three.js

· React Three Fiber

· Figma

· CI/CD

· AI/LLM APIs

· Computer vision

· Healthcare applications

· SaaS development

Candidates are not required to know all of these technologies.

Strong fundamentals and the ability to learn new technologies quickly are more important.

What We Look For

We are particularly interested in candidates who:

· Enjoy building products from scratch

· Can learn technologies independently

· Are comfortable solving unfamiliar technical problems

· Take ownership of assigned work

· Can debug problems systematically

· Ask technical questions when necessary

· Can understand an existing codebase





· Are comfortable working in a fast-moving startup environment

· Are interested in AI and healthcare technology

· Want to build a long-term career in software engineering

Performance Evaluation

At the end of the internship, candidates will be evaluated primarily on:

Technical Skills

· Frontend development

· Backend development

· Database understanding

· API development

· Debugging ability

· Code quality

Execution

· Task completion

· Development speed

· Reliability

· Ability to meet deadlines

· Ability to independently solve problems

Engineering Maturity

· Understanding of architecture

· Maintainability of code

· Testing practices

· Security awareness

· Documentation

Professional Performance

· Ownership

· Communication

· Teamwork

· Consistency

· Ability to accept and implement feedback

Full-Time Employment Opportunity

Candidates successfully completing the internship may be offered a position as:

Full Stack Developer

Depending upon the candidate's strongest skills and company requirements, the eventual role may evolve toward:

· Full Stack Developer

· Frontend Developer

· Backend Developer

· Full Stack + AI Integration Developer

· Cloud/Backend Developer

· Product Engineer

· 3D/Web Visualization Developer The final role will be determined according to the candidate's demonstrated strengths.

Full-Time Compensation

There is no predetermined uniform salary for every intern converting to full-time employment.

The full-time compensation package will be decided based on:

· Technical skill level demonstrated during the internship

· Ability to independently develop production features

· Frontend/backend competency

· Cloud and deployment knowledge

· Problem-solving ability

· Code quality

· Speed and reliability

· Ownership of projects

· Overall contribution during the internship

Exceptional candidates who demonstrate strong technical ownership may be offered a higher compensation package and greater engineering responsibility.

Internship Stipend₹10,000 – ₹15,000 per month The exact internship stipend within this range will be determined based on:

· Current technical capability

· Previous projects

· Development experience

· Interview performance

· Knowledge of the technologies relevant to the role

Who Can Apply

We welcome applications from

· Final-year B.Tech/B.E./BCA/MCA/M.Tech students

· Computer Science / IT graduates

· Recent graduates

· Self-taught developers with strong portfolios

· Candidates with relevant full-stack development projects

Academic degree alone will not determine selection.

Candidates should be able to demonstrate their technical capability through projects, GitHub repositories, assignments, or technical discussions.

Selection Process The recruitment process may include:

1. Application screening

2. Portfolio/GitHub/project review

3. Technical discussion
4. Practical coding or development assignment

5. Technical interview

6. Final discussion
7. Internship offer

The emphasis will be on practical development capability rather than theoretical knowledge alone.

What We Offer

· Work on production applications rather than dummy internship projects

· Exposure to AI-powered healthcare products

· Full-stack product-development experience

· Experience with modern cloud infrastructure

· Exposure to AI and computer-vision integrations

· Direct collaboration with engineering and product teams

· Opportunity to take ownership of complete product features

· Mentorship and technical guidance

· Internship Certificate

· Experience Letter upon successful completion

· Opportunity for a full-time position

· Career growth based on capability and performance

Important

This is a full-time, on-site internship.

Candidates looking exclusively for a remote internship or a short-term academic internship should not apply.

We are particularly looking for candidates interested in joining KrinosAI beyond the internship and developing into long-term members of the engineering team.

Pay: ₹10,000.00 - ₹15,000.00 per month

Work Location: In person

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