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Technical Lead
AiSensyKolkata, IN4 days ago
Job descriptionTechnical Leadership : Lead, mentor, and inspire a team of full stack developers; foster a high-performance, growth-oriented environment. Architecture Ownership : Design scalable, secure, and maintainable backend and frontend architecture to support real-time, large-scale applications. Full Stack Execution : Develop features end-to-end using the MERN stack — from intuitive user interfaces in React.js to robust APIs in Node.js. Code Quality & Reviews : Uphold engineering best practices by conducting thorough code reviews and improving codebase maintainability. Collaboration : Work cross-functionally with Product, Design, DevOps, and QA teams to define, build, and ship impactful features. Performance & Scalability : Optimize web performance, server efficiency, and database interactions for speed and reliability. CI / CD & DevOps : Participate in infrastructure decisions and deployments with Docker, Kubernetes, and cloud tools (AWS preferred). Innovation : Evaluate new tools, frameworks, and processes to constantly raise the bar on development quality and team productivity. 6+ years of experience in software development with at least 3+ years in a leadership or senior developer role . Strong proficiency with the MERN Stack : MongoDB , Express.js , React.js , and Node.js . Excellent command over JavaScript , TypeScript , and modern frontend libraries (e.g., Redux, Zustand). Solid understanding of RESTful APIs , asynchronous programming, and modern software architecture. Proven experience designing and deploying scalable systems on cloud platforms like AWS or GCP. Strong problem-solving, debugging, and analytical skills. Hands-on experience with version control systems (Git) and CI / CD tools. Excellent communication skills and the ability to lead by example. Exposure to WebSockets , event-driven systems , or messaging queues. Experience with Docker , Kubernetes , and monitoring tools (e.g., Prometheus, Grafana). Prior experience in a SaaS or B2B product environment . Familiarity with testing tools such as Jest, Mocha, or Cypress. Lead with Impact : Own major components of a product used by 100K+ businesses. Career Growth : Fast-track your career through real leadership experience and meaningful projects. Dynamic Culture : Work in a transparent, fast-moving, and innovation-first environment. Build the Future : Shape how modern businesses interact with customers on WhatsApp at scale.
About AiSensy
AiSensy is a WhatsApp based Marketing & Engagement platform helping businesses like Adani, Delhi Transport Corporation, Yakult, Godrej, Aditya Birla Hindalco., Wipro, Asian Paints, India Today Group Skullcandy, Vivo, Physicswallah, Cosco grow their revenues via WhatsApp.
- Enabling 150,000+ Businesses with WhatsApp Engagement & Marketing
- 800Crores + WhatsApp Messages done between Businesses and Users via AiSensy per year
- Working with top brands like Delhi Transport Corporation, Vivo, Physicswallah & more
- High Impact as Businesses drive 25-80% Revenues using AiSensy Platform
- Mission-Driven and Growth Stage Startup backed by Marsshot.vc, Bluelotus.vc & 50+ Angel Investors
Role Overview :
We’re looking for a Tech Lead with deep hands-on experience in the MERN Stack who can lead a team of engineers, architect robust systems, and build high-performing web applications. This is a high-ownership, high-impact role where you'll drive innovation, scalability, and performance across our tech stack.
You’ll work directly with leadership, product, and design teams to create experiences that reach millions. If you're a tech-savvy problem solver who thrives in fast-paced environments, this role is for you.
Key Responsibilities
Qualifications & Skills
Must-Haves :
Nice-to-Haves :
Why Join AiSensy?
Excited to lead innovation in a product that powers revenue for thousands of brands?
Apply now and help us build the future of customer engagement at AiSensy.
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Technical Lead • Kolkata, IN
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