Experience : 3.00 + years

Salary : INR 3000000-5000000 / year (based on experience)

Expected Notice Period : 30 Days

Shift : (GMT+05:30) Asia/Kolkata (IST)

Chance Type : Remote

Placement Type : Full Time Permanent position(Payroll and Compliance to be managed by: Cool AI)

(*Note: This is a requirement for one of Uplers' client - Cool AI)

What do you need for this opportunity?

Must have skills required: AdTech, MarTech, React-redux, Java, MySQL, PostgreSQL, react

Cool AI is Looking for: About The Role We are looking for a Mid-Senior Full-Stack Engineer to join our Product Engineering team, reporting to the Engineering Manager (Bi Yoo).

This role is responsible for building and maintaining the web applications that power our advertising platform, including the Cool AI campaign management system, billing and invoicing module, and advertiser-facing dashboards. The Full-Stack Engineer will work across our frontend (React/TypeScript) and backend (Java/Spring Boot) stack, delivering features end-to-end from database schema design through API development to polished UI implementation.

Challenges and Opportunities This role spans the full product surface of a growing ad tech platform. You''ll build features that advertisers interact with daily — campaign creation and launch workflows, real-time performance dashboards, multi-platform account integrations (Google Ads, Meta, Adform), and automated billing systems.

There is significant opportunity to shape product architecture as we scale to support new advertising channels, expand our AI-driven campaign optimization, and onboard enterprise clients with complex billing and permissions requirements.

Responsibilities And Duties

- Design and implement full-stack features across React (TypeScript, Tailwind CSS, Vite) and Spring Boot (Java 17, PostgreSQL) codebases
- Build and maintain RESTful APIs with proper authentication, authorization (role-based access control), and input validation
- Design and evolve PostgreSQL database schemas using Flyway migrations, including JSONB modeling for flexible domain objects
- Develop responsive,



accessible UI components following existing design patterns and component libraries
- Integrate with third-party advertising platform APIs (Google Ads, Meta Marketing API, Adform) for account management and data synchronization
- Implement and maintain OAuth flows for external platform connections
- Build complex business logic including billing calculations, invoice generation, and payment processing workflows
- Write efficient database queries and optimize application performance for large datasets
- Collaborate with the data engineering team on Snowflake integrations for analytics and reporting features
- Participate in code reviews, providing constructive feedback and maintaining code quality standards
- Troubleshoot production issues across the full stack using AWS CloudWatch logs and application monitoring
- Contribute to CI/CD pipeline maintenance and deployment processes

Qualifications Professional Competencies

- 4-6 years of professional software engineering experience in full-stack web development
- Strong proficiency in Java (11+) and Spring Boot, including Spring Security, Spring Data JPA, and RESTful API design
- Strong proficiency in React (16+) with TypeScript, including hooks, state management, and modern component patterns
- Solid experience with PostgreSQL including schema design, query optimization, indexing strategies, and migrations
- Experience with CSS frameworks (Tailwind CSS preferred) and building responsive layouts
- Familiarity with cloud services, particularly AWS (S3, SES, Lambda, ECS, CloudWatch)
- Experience integrating with third-party REST APIs and OAuth 2.0 authentication flows
- Understanding of Git workflows, pull request processes, and collaborative development practices




- Ability to independently own features from technical design through deployment
- Strong debugging skills across frontend and backend, including browser DevTools and server-side logging

Cultural Competencies

- Must be able to work primarily between the hours of 9:30 AM - 6:30 PM ET
- Must have a player/coach mentality, willing to both execute and lead
- Ability to juggle multiple projects concurrently and set and meet deadlines
- Skilled at receiving and providing direct feedback
- Collaborative mindset and great teamwork skills
- Entrepreneurial & adaptable great learning skills
- Curious, research-minded, data-informed
- Able to search for possible solutions and apply them
- Creative confidence
- Proactive communicator
- A sense of humor and a love of online culture
- Thrives in a start-up culture

Locations

- India Team, US Team

Remote status

- Fully Remote

Employment type

- Contract

Interview Process:

- Screening Round- 30-min screening call (profile/high-level technical fit)
- Round 1- Technical Rounds (system design + coding, deep dive)
- Round 2- Technical Rounds (system design + coding, deep dive)
- Round 3- Final round with Tianyi (technical + culture fit)

How to apply for this opportunity?

- Step 1: Click On Apply! And Register or Login on our portal.
- Step 2: Complete the Screening Form & Upload updated Resume
- Step 3: Increase your chances to get shortlisted & meet the client for the Interview!

About Uplers: Our goal is to make hiring reliable, simple, and fast. Our role will be to help all our talents find and apply for relevant contractual onsite opportunities and progress in their career. We will support any grievances or challenges you may face during the engagement. (Note: There are many more opportunities apart from this on the portal. Depending on the assessments you clear, you can apply for them as well).

So, if you are ready for a new challenge, a great work environment, and an opportunity to take your career to the next level, don't hesitate to apply today. We are waiting for you!

📌 Senior Full-Stack Engineer/ Senior Software Engineer (India)
🏢 Uplers
📍 India