Senior Software Engineer-NodeJS

Company: Billion-dollar US-based Retail

About the Role:

We are seeking a talented and experienced Fullstack Engineer with a strong focus on frontend development to join our dynamic team. You will work with modern web technologies to design and implement highly scalable and user-friendly interfaces for our global e-commerce platform. This is a hybrid role requiring 3 days a week from the office and 2 days remote.

Key Responsibilities:

Develop and maintain high-performance web applications with a primary focus on frontend features.

Collaborate with designers, backend engineers, and product managers to deliver seamless user experiences.

Write clean, maintainable, and scalable code using React.js, Vue.js, and other modern frameworks.

Integrate and optimize backend services using Node.js and PostgreSQL.

Participate in code reviews, mentoring sessions, and team discussions to uphold engineering excellence.

Stay up-to-date with emerging trends and technologies in fullstack and frontend development.

Required Skills and Experience:

8+ years of professional experience in software development, focusing on fullstack engineering.

Strong proficiency in React.js and/or Vue.js for frontend development.

Solid understanding of Node.js for backend services.

Experience with relational databases like PostgreSQL.

Proficiency in building responsive, cross-browser-compatible, and accessible user interfaces.

Familiarity with agile development methodologies and version control systems like Git.

Excellent problem-solving skills and the ability to work effectively in a team-oriented environment.

Preferred Qualifications:

Previous experience in the retail/ E-commerce / and finance domain a plus.

Why Middleware? 💡

Sick of the endless waiting?

Waiting on code reviews, QA feedback, or that "quick call"?

At Middleware, we’re all about freeing up engineers like you to do what you love—build.

We’ve created a cockpit that gives engineering leaders the insights they need to unblock teams, cut bottlenecks, and let engineers focus on impact.

What You’ll Do 🎨

• Own the Product: Shape a product that engineers rely on daily.
• Build Stunning UIs: Craft data-rich, intuitive designs that solve real problems.
• Shape Middleware’s Architecture: Make our systems robust, seamless, and introduce mechanisms that allow high visibility into our automated pipelines.

What We’re Looking For 🔍

• React + Typescript: You know your way around these tools and have launched awesome projects.
• Python + Postgres: You've build complete backend systems, not just basic CRUD apps.
• Passionate Builder: Hungry to grow, build, and make an impact.

Bonus Points ⭐️

• Eye for Design: You have a sense for clean, user-friendly visuals.
• Understanding of distributed systems: Not everything runs on a single machine, and you know how to make things work across a lot of those.
• DSA Know-how: Familiarity with data structures (graphs, linked lists, etc.) because our product (even frontend) actually uses DSA concepts.

Why You'll Love Working with Us ❤️

We’re engineers at heart.

Middleware was founded by ex-Uber and Maersk engineers who know what it’s like to be stuck in meeting loops and endless waiting. If you're here to build, to make things happen, and to change the game for engineering teams everywhere, let’s chat!

Ready to jump in? Explore Middleware (https://www.middlewarehq.com/) or check out our demo (https://demo.middlewarehq.com/).

About HighLevel

HighLevel is an AI powered, all-in-one white-label sales & marketing platform that empowers agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth. We are proud to support a global and growing community of over 2 million businesses, comprised of agencies, consultants, and businesses of all sizes and industries. HighLevel empowers users with all the tools needed to capture, nurture, and close new leads into repeat customers. As of mid 2025, HighLevel processes over 4 billion API hits and handles more than 2.5 billion message events every day. Our platform manages over 470 terabytes of data distributed across five databases, operates with a network of over 250 microservices, and supports over 1 million hostnames.

Our People

With over 1,500 team members across 15+ countries, we operate in a global, remote-first environment. We are building more than software; we are building a global community rooted in creativity, collaboration, and impact. We take pride in cultivating a culture where innovation thrives, ideas are celebrated, and people come first, no matter where they call home.

Our Impact

As of mid 2025, our platform powers over 1.5 billion messages, helps generate over 200 million leads, and facilitates over 20 million conversations for the more than 2 million businesses we serve each month. Behind those numbers are real people growing their companies, connecting with customers, and making their mark - and we get to help make that happen. Learn more about us on our YouTube Channel or Blog Posts

About the Role

We’re looking for a Senior Software Engineer to join our Agency Module and Billing Team, which powers the foundation of our Agency Ecosystem — enabling seamless onboarding, management, and monetisation experiences for HighLevel’s agencies and their clients.

Today, over 100K agencies run their businesses with HighLevel, collectively serving 2M+ businesses of all scales — primarily SMBs. The Company Module and Agency Billing systems are at the heart of this growth, helping agencies onboard faster, manage finances effortlessly, and scale their operations with reliability and transparency.

This team builds and scales key components like Agency Signup, Agency Billing, and the HighLevel Affiliate Program, all integrated into our whitelabeled platform that empowers businesses to deliver customised experiences under their own brand. These systems are critical to the growth and sustainability of HighLevel’s ecosystem — supporting thousands of agencies and their downstream customers with robust, scalable, and secure infrastructure.

As a Senior Software Engineer, you’ll play a pivotal role in designing and evolving these core systems. You’ll work on challenges across frontend and backend architecture, distributed systems, payment integrations, and multi-tenant SaaS design — ensuring reliability, scalability, and a seamless experience for agencies across web and mobile platforms.

You’ll collaborate closely with Product Managers, Designers, and other Engineers to deliver powerful and intuitive solutions that help agencies scale faster and manage their businesses effortlessly.

Responsibilities

• Own and contribute to architecture and development across Agency Module, Billing, and Affiliate systems, driving technical excellence across frontend and backend services.
• Design and implement robust backend APIs for subscription management, payments, invoicing, and affiliate tracking, using test-driven development and scalable distributed patterns (caching, messaging, queuing).
• Deliver performant frontend experiences for agency onboarding, billing dashboards, and affiliate management using modern frameworks and component-driven architecture with strong state management principles.
• Architect secure integrations with third-party payment gateways (e.g., Stripe, Razorpay, PayPal, etc.) and internal microservices, ensuring accuracy, reliability, and compliance in all financial transactions.
• Implement and maintain observability, logging, and monitoring to ensure high availability and rapid incident resolution across critical billing and agency workflows.
• Champion platform security and compliance by enforcing best practices across authentication, authorization, data protection, and rate-limiting — ensuring the integrity of sensitive financial and user data.
• Leverage LLMs and AI-assisted tools to accelerate development, automate testing, refactoring, and documentation, while maintaining strong reliability guardrails.
• Collaborate cross-functionally with Product Managers, Designers, and other Engineering teams to ensure alignment between business goals and technical architecture.
• Participate in technical reviews, deep dives, and on-call rotations, fostering a culture of accountability, operational excellence, and continuous improvement.

Requirements

• 4+ years of hands-on software engineering experience building and scaling robust backend systems and high-performance frontend applications.
• Strong backend engineering and distributed system design skills, with hands-on experience in API development, data modeling, and systems architecture using either Node.js, GoLang or Java.
• It is preferred if the candidate has experience in TypeScript, PostgreSQL, MongoDB, and Redis as well.
• Expertise in backend performance optimization, caching strategies, and event-driven architectures (e.g., Redis, Kafka, Pub/Sub).
• Familiar with modern frontend frameworks (React, Vue, Angular), advanced UI engineering patterns, and CSS libraries like Bootstrap or Tailwind CSS.
• Advanced experience with complex state management libraries (e.g., Redux, Vuex, MobX) and architectural design of large-scale application state.
• Proven track record of optimizing frontend performance and web vitals at scale, including experience with server-side rendering (SSR), edge, or hybrid rendering architectures.
• Familiarity with frontend and backend observability - including monitoring, tracing, error tracking, and performance profiling in production (e.g., Grafana, Prometheus, Sentry, PostHog).
• Strong understanding of security best practices across the full stack—including authentication, authorization, access control, secure data flow, and privacy compliance.
• Excellent communication and cross-functional collaboration skills, able to drive complex initiatives, lead technical discussions, and mentor junior engineers.

EEO Statement:

At HighLevel, we value diversity. In fact, we understand it makes our organisation stronger. We are committed to inclusive hiring/promotion practices that evaluate skill sets, abilities, and qualifications without regard to any characteristic unrelated to performing the job at the highest level. Our objective is to foster an environment where really talented employees from all walks of life can be their true and whole selves, cherished and welcomed for their differences while providing excellent service to our clients and learning from one another along the way! Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.

Job Description – Sr. Full Stack Developer

Summary

You will be responsible for the full software development Lifecyle.

Core Accountabilities

• Motivate, develop, coach, and formally appraise the Software Development team.
• Monitor & co-ordinate any management information and capacity relating to the work of the team.
• Responsible for leading the software development team and providing technical guidance.
• Responsible for full stack, architectural, solution design specification and documentation.
• Responsible for the design, development, modification, maintenance, testing and deployment.
• Develop fully integrated back-end to front-end innovative solutions.
• Design, develop and maintain database solutions associated to data driven platforms.
• Develop to high quality coding standards.
• Responsible for project version control, coding standards, branching strategy and deployment.
• As part of the full development life cycle you will be responsible for continuous integration testing, Unit Testing and Performance Testing.
• Provide advanced technical support escalated from the development support team for all Voyager systems, solutions, and data sets.
• Scope and define detailed product backlog item descriptions that feed into sprint planning.
• Provide effective technical analysis, design requirements and relevant documentation.
• Using appropriate tools to define and communicate the required solution. These may include user journeys, prototypes, and wireframes.
• Coordinate release and sprint planning & conduct daily scrum meetings.
• Develop and maintain a thorough and up-to-date working technical knowledge of digital solutions and the Voyager Worldwide product suite.
• Develop and maintain a detailed technical understanding of our products, systems, technologies, architecture, and data sets.
• Develop and maintain a thorough and up-to-date working technical knowledge and understanding of AI, ML and RPA technologies.
• It should be noted that the above list of main duties and responsibilities is not necessarily a complete statement of the final duties of the post.

Qualifications & Experiences

• 8+ years’ software engineering experience in developing data driven based software solutions.
• 2 years’ leading end to end full stack design, development and implementation.
• Excellent working technical knowledge and understanding of AI, ML and RPA technologies.
• C#.Net: i.e. (.Net Frameworks, WPF, WCF, MVC, MVVM, XAML, Xamarin)
• Python: i.e. (TensorFlow, Keras, Theano, Scikit-learn, PyTorch, NumPy, Pandas)
• JavaScript: i.e. (ES6, Node.js, NPM, Sails.js, Ember.js, React, Mocha, Electron)
• JavaScript framework experience (e.g., Ember, React, Angular)
• jQuery, CSS, and HTML
• Excellent working knowledge and understanding of version control systems such as SVN, TFS & GIT.
• Strong SQL Database design and programming skills.
• Excellent working knowledge and understanding of project management tools such as VSTS DevOps

Requirement:

- Must have 5+ years Drupal programming experience.
- Good experience in Drupal 7 and 8 implementations.
- Good understanding of MY SQL and relational databases.
- Should have a good understanding of OOPs concept and latest features.
- Should have an understanding of Design Patterns like Singleton, factory, etc.
- Should have at least worked on MVC frameworks like CodeIgniter,CakePHP, Laravel.
- Good understanding of web technologies
- Good understanding of front-end development HTML5, CSS3, JavaScript, Jquery skills.
- Good Git version control knowledge.
- Contribution to open source community.
- Experience in Drupal 7 of 5+ years.
- Good with RDBMS & writing custom SQL
- Drupal API experience
- Must have PHP, JavaScript, AJAX, HTML and CSS experience
- Should be able to code as per Drupal standard coding
- Should be well versed with implementation and configuration of most commonly used modules
- Experience with CSS Frameworks such as Twitter Bootstrap. Communication Responsibilities:
- Deliver engaging, informative and well-organized presentations.
- Strong command of English language (both verbal and written).
- Resolves and/or escalates issues in a timely fashion.

Other Skills

• Disseminate technology best practices.
• Work with senior developers in adoption of new technologies within our Technology practice
• Good team player with ability to lead multiple technical teams.
• Excellent relationship building skills.
• Ability to work under pressure with a solid sense for setting priorities.

We are looking for a MERN Stack developer to join our team at the earliest. In this role, as a Senior Mern Stack Developer, you will be entrusted with developing JavaScript applications using Node.js, Express, React.js, and Mongo DB. Apply now for the role of a Mern Stack Developer at Pattem that’s opening doors for skilled, energetic developers looking for Mern Stack Developer Jobs in Bangalore. If you can help us design and create multiple layers of applications while working cross-functionally across different infrastructures. You would fit perfectly if you love problem-solving, design, and creating quality offerings.

• As a MERN Stack Developer, it’s your responsibility to translate storyboards and various use cases to create high-performing apps
• Write, execute, and maintain clean, reusable and scalable code
• Integrate our various data storage solutions
• Ensure the responsiveness and boost the performance of our apps
• Find and address the various bottlenecks and bug-fixes
• Help in code automatization

• Previous working experience as a MERN stack developer for 3+ years
• Strong experience with full-stack Javascript framework, Mongo DB, Express, React.JS, Node JS.
• Self-motivated with the ability to work independently or jointly in a self-directed way.
• Demonstrated successful development of enterprise-grade web applications
• Proven analytical and problem-solving capabilities
• Keen attention to detail
• Comfortable leading product development
• Strong work ethic and desire to build industry-leading products
• Proactive instead of reactive
• Looking for ways to improve self and projects

• Ability to translate Wireframes and PSD Designs into functional web apps using HTML5, AngularJS, React , Node.js, and Mongo

• Binding of UI elements to JavaScript object models

• Creating RESTful services with Node.js

• Architect scalable web architectures

• Work in a cross-functional team to deliver a complete user experience

• Create Unit and Integration tests to ensure the quality of code

• Be responsive to change requests and feature requests

• Write code that is cross-platform and cross-device compatible

• Ability to wear many hats and learn new technologies quickly