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OnsiteSeniorb2b saas

Senior Software Engineer-MERN

AjackusIndiaPosted 19 May 2026

Ajackus is seeking a Senior Software Engineer to build scalable web applications within their B2B software services division. The role focuses on full-stack development using the MERN stack alongside mandatory integration of AI-assisted coding tools. Candidates are expected to handle everything from database design and REST API development to frontend interface implementation. The position requires strong proficiency in modern JavaScript and experience with agile development workflows.

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Experience

3+ years

Function

Engineering

Work mode

Onsite, India

Company

Tier 2

What you will work on

Ajackus is seeking a Senior Software Engineer to build scalable web applications within their B2B software services division. The role focuses on full-stack development using the MERN stack alongside mandatory integration of AI-assisted coding tools. Candidates are expected to handle everything from database design and REST API development to frontend interface implementation. The position requires strong proficiency in modern JavaScript and experience with agile development workflows.

TAL's take

Quality 55/1005/5 clarityTier 2 company

The role is well-defined with clear technical requirements, representing a solid tier 2 engineering opportunity.

The job description is highly specific regarding the MERN stack requirements and mandatory AI tool proficiency.

Must haves

  • 3+ years of hands-on experience in MERN stack development
  • Strong proficiency in JavaScript, ES6+, and TypeScript
  • Expertise in React.js, Redux/Context API
  • Strong experience with Node.js and Express.js
  • Experience with MongoDB aggregation and indexing
  • Mandatory experience using AI-powered developer tools like GitHub Copilot or Cursor

Tools and skills

mongodbexpress.jsreact.jsnode.jsjavascriptes6+typescriptrestful apisai-powered development toolsgit

Nice to have: docker, microservices architecture, jest, mocha, ci/cd, aws, azure, gcp.

About the company

Ajackus is a mid-sized IT services and software development firm which qualifies as a tier 2 company.