MERN STACK SENIOR DEVELOPER

StarApps Studio is a product-driven SaaS company building Shopify apps that power thousands of online stores. We’ve developed 6 highly-rated Shopify apps (averaging 4.9★) used by 30,000+ Shopify merchants worldwide, including over 1,000 Shopify Plus stores. In just a few years, our bootstrapped team grew from $5.5M to $10M in Annual Recurring Revenue (ARR) by obsessing over quality and merchant success. We’re a tight-knit, 20-person team based in Baner, Pune, on a mission to help e-commerce brands create world-class shopping experiences.

Role Overview

We are looking for a Full Stack Developer who will own features end-to-end with an emphasis on backend excellence. In this role, you will design and optimize complex data models and API architectures in Ruby on Rails, implement robust background job queues (e.g. delayed_job) for heavy workloads, and perform rigorous performance tuning to ensure our systems scale. On the frontend, you'll build and integrate React components to deliver complete, user-friendly features. This is a role for someone who loves tackling deep technical challenges in the backend while also crafting intuitive user interfaces – an opportunity to leverage your backend expertise while driving full-stack product ownership.

Key Responsibilities

• Architect & Optimize Backend: Design scalable database schemas and efficient data models. Develop high-performance RESTful APIs and services in Ruby on Rails, ensuring clean, maintainable code and great performance.
• Backend API Development: Design, implement, and maintain robust backend services and RESTful APIs in Ruby on Rails to support new features and internal tools.
• End-to-End Performance Tuning: Optimize application performance across the stack – from minimizing frontend load times to improving backend query efficiency – for our high-traffic, data-intensive apps.
• Collaboration & Agile Delivery: Work closely with designers, product managers, and QA to translate requirements into technical solutions. Participate in sprint planning, code reviews, and daily deployments to ship features continuously and reliably.
• Quality & Maintenance: Write clean, maintainable code with appropriate test coverage (unit and integration tests) to ensure reliability. Monitor, debug, and resolve issues in production, and continually refactor and improve existing code for stability and performance

What We’re Looking For (Requirements)

• 4–8 Years Experience: Proven experience as a software developer in a product company (experience in e-commerce or SaaS is highly preferred). You have built real products used by actual customers at scale.
• Ruby on Rails Expertise: Strong command of Ruby on Rails. Experience designing RESTful APIs, working with MVC architecture, and using Rails best practices. You should understand how to structure large Rails applications for maintainability.
• Backend Proficiency: Comfortable building server-side applications and APIs with Ruby on Rails. You can implement business logic, integrate with databases, and create RESTful endpoints (bonus if you’ve worked with GraphQL or other backend frameworks).
• Database Skills: Proficiency with PostgreSQL (or similar RDBMS). Capable of writing complex SQL queries, optimizing queries/indexes, and designing efficient relational schemas. Familiarity with Redis or caching strategies is a plus.
• Front-End Proficiency: Comfortable building user interfaces with React and modern JavaScript/TypeScript. Able to implement frontend components that consume APIs and provide a smooth user experience.
• System Design & Quality: Solid understanding of web application architecture, performance tuning, and scalability concerns. Experience with profiling, benchmarking, and optimizing web applications. Commitment to writing clean, maintainable code with proper tests.
• Product Mindset: You care about the why behind the features. You are comfortable digging into requirements, questioning assumptions, and ensuring that we build solutions that truly solve merchant problems.
• Adaptability & Collaboration: Excellent problem-solving skills, communication, and ability to work in a fast-paced, collaborative environment. You are a self-starter who can take ownership of tasks and drive them to completion, but also know when to ask for help.

Tech Stack

• Frontend: React, TypeScript/JavaScript, HTML5, CSS3 (Tailwind/Bootstrap), modern build tools (Webpack, Babel).
• Backend: Ruby on Rails (REST APIs, background jobs), some services in Python.
• Database: PostgreSQL.
• Cloud & DevOps: Amazon Web Services (EC2, S3, RDS, CloudFront), Docker, CI/CD for daily deployments.
• Tools: Git (GitHub), Agile issue tracking (JIRA/Trello), and a keen use of automated testing.

(Don’t worry if you aren’t familiar with every item – we value willingness to learn. This is our current stack, and we continually adopt new technologies that improve our products.)

Why Join Us

• High Impact & Ownership: Your work will directly enhance the shopping experience of 50M+ shoppers daily. At StarApps, developers deploy code daily and see the immediate impact on thousands of merchants – you’ll own projects end-to-end and build features that matter.
• Fast-Growing, Profitable Startup: Join a bootstrapped, profitable company on an exciting growth trajectory (from $4M to $10M ARR). There’s no bureaucracy here – just a passionate team obsessed with product quality and merchant happiness. You’ll be part of our core team as we scale, with ample opportunities to grow into leadership roles.
• Cutting-Edge Tech & Challenges: Work with modern technologies (React, Rails, AWS) on performance-intensive applications. Tackle complex challenges in scaling, optimization, and UX for a global user base – continuously sharpen your skills in a supportive, learning-focused environment.
• Collaborative Culture: We are a small 25-person team that operates like a close-knit family. You’ll work side by side with experienced founders and a talented team that values innovation, humility, and continuous improvement. Our culture is open, empathetic, and growth-oriented – every voice is heard, and every team member plays a crucial role in our success.

Growth & Benefits: We invest in our team’s growth. Expect a competitive salary, performance bonuses, and whatever tools you need to do your best work. We sponsor professional development (courses, conferences, books) and encourage knowledge-sharing. You’ll enjoy a flexible leave policy, team off-sites, and the excitement of building a global product from our new office in Baner, Pune.

Were Hiring : MERN Stack Developer

- Deqode is looking for passionate and skilled MERN Stack Developers to join our growing team in Mumbai. If you love building scalable applications, working with cutting-edge technologies, and solving complex problems, wed love to meet you!

Role : MERN Stack Developer

- Experience Required : 2 - 4 Years

- Location : Mumbai (Work From Office 5 Days)

- Notice Period : Immediate Joiners or up to 15 Days

Key Responsibilities :

- Develop, test, and deploy high-quality web applications using MongoDB, Express, React, and Node.js.

- Design and maintain scalable APIs and services.

- Work with Docker & Kubernetes for containerization and deployment.

- Integrate Kafka for real-time data processing and messaging.

- Collaborate with cross-functional teams to deliver robust and efficient solutions.

- Write clean, maintainable, and efficient code while following best practices.

Required Skills :

- Strong hands-on experience with MERN Stack (MongoDB, Express.js, React.js, Node.js).

- Experience with Docker and Kubernetes.

- Knowledge of Kafka for event-driven architecture.

- Solid understanding of software design principles and RESTful APIs.

- Problem-solving mindset with strong analytical skills.

Job Overview: We are looking for a highly skilled and experienced Node.js Developer to join our team. The ideal candidate will have over 5 years of experience in developing scalable, high-performance backend applications using Node.js and related technologies. You will work closely with cross-functional teams to design, develop, and deploy robust solutions.

Key Responsibilities:

· Develop, maintain, and optimize server-side applications using VueJs, Node.js and Express.js.

· Design and implement scalable RESTful APIs and GraphQL APIs.

· Work with databases such as MongoDB, PostgreSQL, or MySQL.

· Ensure the security, performance, and responsiveness of applications.

· Collaborate with front-end developers, UX designers, and product managers.

· Implement automated testing and continuous integration.

· Debug and optimize existing code for performance improvements.

·  Stay updated with the latest trends and best practices in Node.js development.

Required Skills & Qualifications:

· 5+ years of experience in backend development using Node.js.

· Proficiency in JavaScript & TypeScript.

· Strong knowledge of Express.js, Nest.js, or similar frameworks.

· Experience with microservices architecture and cloud platforms (AWS, Azure, GCP).

· Expertise in database technologies such as MongoDB, PostgreSQL, or MySQL.

· Familiarity with Docker, Kubernetes, and CI/CD pipelines.

· Experience with authentication and security best practices (JWT, OAuth, etc.).

· Strong debugging and performance optimization skills.

·  Ability to work in an agile environment and collaborate with cross-functional teams.

Preferred Qualifications:

· Experience with message queues (RabbitMQ, Kafka, etc.).

· Knowledge of DevOps practices and infrastructure as code (Terraform, Ansible).

· Familiarity with front-end technologies such as VueJs or React.

· Contributions to open-source projects or a strong GitHub portfolio.

• Working with designers to implement visual designs and user interfaces.
• Creating and optimizing website layouts and navigation.
• Integrating graphics, audio, and video content.

Website Maintenance:

• Monitoring website performance and troubleshooting issues.
• Performing website updates and maintenance.
• Ensuring website security and data protection.

Collaboration:

• Working closely with designers, content creators, and other team members.
• Communicating effectively with clients or stakeholders.
• Participating in project planning and development meetings.

Technical Proficiency:

• Staying up-to-date with emerging web technologies and trends.
• Using version control systems (e.g., Git).
• Understanding of server-side technologies and database management.
• Understanding of SEO principles.

Responsibilities

• Design and develop REST-based web services utilizing Java micro services web frameworks (Spring Boot)
• Apply design principles and patterns in creating enterprise level solutions, as needed
• Perform web services tuning and performance testing
• Implement unit tests as needed
• Support front-end developers in leveraging web services
• Automate/script common developer tasks, continually optimize personal and team workflows
• Infrastructure setup and configuration
• Engage in code review and feedback process
• Take a feature from inception to completion independently across the stack
• Collaborate with teammates on proposed UX/UI and provide feedback as needed
• Participate in and support the entire SDLC processes

Requirements

• Spring Boot, Spring Security, Spring JPA & Hibernate
• Relational data modelling concepts and experience in PostgreSQL, MySQL, or similar
• Adopted opinionated RESTful web services design patterns
• Microservices-based application architecture
• Application containerization technologies, including Docker, Kubernetes, and cloud-vendor implementations (AWS, Azure, other)
• Other modern technologies relevant to the technology stack defined here
• Javascript ES6 or later
• React
• Git

HireSure.ai is a blockchain registry for job offers & employment history. Companies get transparent, immutable, and cryptographically verifiable job offers and employment history record stored in a secured cloud blockchain. HireSure companies experience significantly higher join ratio, better retention, a better brand perception, and better control on the hiring process. We are looking for passionate developers, willing to work in cutting edge technologies, and having experience in Django/Python.

• Work with the Product/ Business teams to get a full understanding of the requirements and propose creative and efficient solutions
• Come up with innovative solutions to the hurdles that confront us on a day-to-day basis.
• Troubleshoot, test, and maintain the core product software and databases to ensure strong optimization and functionality.
• Contribute in all phases of the development lifecycle.

Senior Fullstack Developer (MERN Stack) having min 4 years of relevant experience with hands-on experience in handling all aspects of Product Management internal and external facing Product development. Work with Founders to set a product vision and strategy that delivers unique value based on customer needs and expectation. Work closely with development and program management to deliver products and features.

Key Responsibilities

• Demonstrated experience managing the full product development life cycle, including product conceptualization,  prototyping, and development
• Software development experience to not just be able to solve stuff on your own but also to better communicate / manage and colloborate between team
• Hands on leader who's comfortable coding, providing code reviews, and leading complex architectural design discussions in team setting. Can set coding standards, ensure quality.
• Team leading experience
• Technical Expertise in AWS deployment
• Very deep capabilities to architect enterprise class applications on the cloud with web/mobile front ends. Microservices Architecture. Cross-platform integrations.

Stack base:

UI - Tailwind, styled components, react (familiar in Functional components and hooks) and react router

State management - Redux and redux saga,

Backend - Express and node,

Database - Redis and MongoDB with mongoose ODM