QA Engineer – Web Applications (MERN & Cloud)

Location: Hybrid (Remote + Onsite at Kolkata Office)

Duration: Full-Time, 3-Month Contract

Start Date: Mid-February 2026

Possibility of extension of contract based on performance & project requirements

About the Role

We are looking for a hands-on QA Engineer who can take end-to-end ownership of testing & quality of web/mobile applications, while also supporting cloud infrastructure and application scalability.

This role is ideal for someone who has worked in startup or agile environments, enjoys wearing multiple hats, and is comfortable working closely with MERN stack developers.

This is a contract-based role for 3 months (full-time) with the possibility of extension of contract based on performance & project requirements.

Key Responsibilities

1.Quality Assurance & Testing

• Understand business and technical requirements and convert them into detailed test cases and test scenarios
• Perform functional, regression, integration, and UAT testing
• Ensure web/mobile applications are bug-free and production-ready
• Validate that delivered features meet client expectations and requirements
• Work closely with MERN stack developers to reproduce issues and verify fixes
• Maintain proper QA documentation and reports
• Proactively identify risks, gaps, and quality improvements

2.Cloud & Deployment Support(GCP/AWS)

• Assist in maintaining and modifying GCP/AWS environments
• Support deployment, monitoring, and scaling of web applications
• Help optimize infrastructure based on traffic and performance needs
• Coordinate with developers for CI/CD, environment changes, and releases

Required Skills & Experience

• 3+ years of experience in QA/Testing of web/mobile applications
• Strong experience in writing test cases and test scenarios
• Experience testing REST APIs and modern web applications
• Familiarity with GCP or AWS environments
• Understanding of agile / startup workflows
• Good communication skills and ownership mindset

Preferred (Nice to Have)

Hands-on experience with CI/CD pipelines

Experience working with MERN stack applications

Exposure to performance or security testing

Prior experience in startup or consulting companies

Familiarity with Agile/Scrum methodology

Basic understanding of Japanese language

Contract Terms

Type: Full-time, 3-months contract

Work Mode: Hybrid (Remote + Onsite at Kolkata Office)

Compensation : Competitive (based on experience and skill level)

Possibility of Extension: Based on performance and project scope