Senior Software Engineer (MERN)

Location: Onsite // Kerala

Experience: MERN Stack // Min. 3 Year

About Us

Helixo is a bootstrapped, profitable company on a mission to create next-gen Shopify apps for next-gen ecommerce brands.

Were building the Apple of Shopify - an ecosystem of 15 AI-first apps so seamless and loved, they become the operating system for ecommerce.

Brands like Decathlon, Nykaa, and Bellavita have already generated over $120 million in extra revenue through our products. But thats not enough.

Our eyes are on the $1 billion impact mark in next 3 years (1,00,00,00,000 - yes, those zeros are real!).

And were rebuilding our flagship app to get there.

Mission: MUGA - Make UFE Great Again

Were on a mission to reclaim the UFE.ai apps #1 spot on the Shopify App Store .

To make that happen, were looking for a Senior MERN Stack Developer who: Thinks like an owner, Writes scalable, clean, and reliable code, Takes end-to-end ownership of features and systems and Executes fast like a startup engineer

If you enjoy building impactful products and pushing engineering boundaries, this is your place.

We only live once - so why waste it doing ordinary work? Join the $1B impact rocketship.

What We Need in Our Senior MERN Stack Developer

Were looking for a passionate Sr. MERN Stack Developer to help us build and scale our Shopify SaaS applications. Youll be responsible for developing robust features end-to-end using MongoDB, Express.js, React.js, and Node.js. Youll work closely with our product and design teams to deliver seamless, high-performance user experiences. This role also offers the opportunity to shape our codebase, influence architecture decisions, and grow into a core engineering leader as we scale.

Responsibilities

• Design, develop, and scale robust web applications using the MERN stack (MongoDB, Express.js, React.js, Node.js) with a strong focus on long-term maintainability.
• Take end-to-end ownership of key modules and features, from technical design to production rollout.
• Perform code reviews , enforce coding standards, and ensure best practices across the team.
• Mentor junior developers by providing technical guidance, feedback, and support for skill growth.
• Actively contribute to architecture discussions , scalability planning, and technical decision-making.
• Participate in and help drive agile ceremonies (sprint planning, stand-ups, retrospectives) with a leadership mindset.
• Identify, debug, and resolve complex production issues and performance bottlenecks.
• Continuously suggest improvements to engineering processes, team efficiency, and product quality .
• Gradually take on people management responsibilities , including task allocation, progress tracking, and supporting team collaboration.

Required Skills and Qualifications

• 35 years of hands-on experience building and maintaining real-world applications using the MERN stack.
• Strong expertise in React.js and Node.js, with a solid understanding of component architecture, state management, and RESTful API design.
• Proven experience with MongoDB, Express.js, Git-based workflows, and effective debugging practices.
• Strong foundation in HTML, CSS, and modern JavaScript (ES6+), with an eye for performance and scalability.
• Ability to analyze problems deeply, make sound technical decisions, and design scalable solutions.
• Demonstrated ownership mindset with the ability to work independently without micromanagement.
• Experience or strong interest in code reviews, mentoring, and guiding other developers.
• Good communication skills with the ability to collaborate effectively across product, design, and engineering teams.
• Working knowledge of AI-assisted development tools and best practices for writing secure, scalable, and production-ready code.
• Interest in people management and technical leadership, with readiness to grow into a Product Team Lead role.

Bonus Skills

• Experience with Remix, Next.js , or TypeScript .
• Previous work on Shopify apps or eCommerce platforms.
• Exposure to DevOps , CI/CD , or cloud hosting (like Vercel or AWS).
• Contributions to open-source or side projects.
• Familiarity with performance optimization techniques.

What we offer?

• The opportunity to play a pivotal role in a fast-growing startup.
• The chance to work with a dedicated and passionate team.
• A platform to innovate, learn, and contribute at every step.

Why Helixo?

• Work with a team that values collaboration, learning, and innovation.
• Opportunities for professional growth and career advancement.
• Competitive remuneration and benefits package.
• Contribute to building tools that empower thousands of e-commerce merchants.