Senior fullstack developer

Job Title: Software Development Engineer 2 (SDE 2) – React / Next.js / React Native

Location: Remote

Job Type: Full-TimeAbout the Role

We are looking for a passionate and skilled SDE 2 with strong experience in React.js and Next.js, and an eagerness to contribute to mobile app development using React Native. As a core member of our frontend team, you'll play a critical role in building scalable web applications and delivering a seamless mobile experience.Responsibilities

• Design, develop, and maintain complex frontend applications using React.js and Next.js
• Collaborate with designers and backend engineers to implement responsive, high-quality UI/UX
• Participate in architectural decisions and contribute to improving development workflows
• Contribute to the development of cross-platform mobile apps using React Native
• Write clean, maintainable, and well-tested code
• Perform code reviews and mentor junior engineers as needed
• Stay up to date with the latest trends and best practices in frontend and mobile development

Requirements

• 3–5 years of experience in software development, with a focus on frontend technologies
• Strong proficiency in React.js and Next.js
• Good understanding of JavaScript, TypeScript, and modern frontend tooling (Webpack, Babel, etc.)
• Experience with state management libraries (Redux, Zustand, Recoil, etc.)
• Familiarity or hands-on experience with React Native or willingness to work on mobile apps
• Knowledge of RESTful APIs and frontend-backend integration
• Experience with Git and modern CI/CD pipelines
• Excellent problem-solving, debugging, and analytical skills
• Strong communication and team collaboration abilities

Nice to Have

• Experience with SSR and performance optimization in Next.js
• Familiarity with native mobile development (Android/iOS)
• Knowledge of testing frameworks like Jest, React Testing Library, Detox, etc.
• Experience with app deployment to App Store / Play Store

Role Overview

We are looking for an Engineering Manager who thrives in a fast-paced startup environment, is hands-on with development, and can lead our engineering team to build and scale robust, high-performing systems. You will drive architectural decisions, mentor a team of talented engineers, and collaborate closely with product, design, and business teams to execute our ambitious roadmap. You will be at the forefront of scaling our infrastructure to support billions of messages, ensuring real-time engagement for businesses at scale.

Key Responsibilities

• Technical Leadership: Own the engineering roadmap, ensuring scalability, reliability, and performance of our systems.
• Hands-on Development: Dive into the code when necessary, set high coding standards, and lead by example.
• Team Management: Lead, mentor, and scale a high-performing engineering team, fostering a strong culture of ownership and innovation.
• System Scalability: Architect and optimize scalable and resilient backend & frontend systems handling millions of messages per day.
• High Availability & Performance: Design systems that can handle billions of API calls and ensure minimal downtime.
• Agile Execution: Drive sprint planning, prioritization, and timely delivery of features in an agile development environment.
• Collaboration: Work closely with product, design, and business teams to align engineering efforts with company goals.
• DevOps & Security: Ensure best practices for CI/CD, cloud infrastructure (AWS/GCP), and security compliance.
• Tech Stack Evolution: Stay ahead of emerging technologies and drive innovation in AiSensy’s architecture.

What You Bring

• 8+ years of experience in software development, with at least 2 years in a leadership/managerial role.
• Expertise in modern tech stacks – Proficiency in MERN (MongoDB, Express, React, Node.js) stack or similar.
• Strong knowledge of cloud platforms (AWS) and microservices architecture.
• Proven experience in scaling high-traffic, distributed systems handling billions of messages per month.
• Hands-on experience with Docker, Kubernetes, and CI/CD pipelines.
• Strong problem-solving skills and an ability to hustle in a fast-paced startup environment.
• Excellent communication skills and a data-driven decision-making approach.
• Passion for building great products, coaching engineers, and driving tech excellence.

What We Offer

• Competitive Compensation & Benefits aligned with your experience and the impact you bring.
• Opportunity for Growth in a rapidly expanding B2B SaaS company.
• Cutting-Edge Technology & Projects in the WhatsApp Business API and Click to WhatsApp Ads space.
• Collaborative Work Environment that fosters innovation, learning, and career development.
• Flexible & Inclusive Culture, where every team member has a voice and the chance to make a significant impact.

Responsibilities 

Design, implementation and delivery of solutions.

Solving new problems and address any issues regarding the architecture and performance. 

Focused on understanding customer needs and anticipate the changing business and technology landscape. 

Collaborate with teams from various verticals within and outside the company.

Qualifications 

2-5 years of Software Engineering experience in Node.js and React. 

Proven experience in architecting performant, complex application on web or mobile applications. 

Knowledge of end to end Software development life cycle.

Ability to work individually or in teams and mentor new developers to the team.

Strong knowledge of computer science, algorithms and design patterns. 

A degree in Computer Science or related field, or equivalent industry experience.

What you need to have:

Company Profile:

Saffron Tech Private Limited

Saffron Tech is a result driven digital transformation company in New Jersey (NJ) & New Delhi. We are known for transforming businesses to digitization. We are providing development services and IT solutions to its clients across the globe. Being in the field of IT for more than 10 years now, the company has successfully executed over 1500 projects for its clients. Saffron Tech Pvt Ltd is a multi-faceted IT firm adept at providing Web and Mobile Application Development, IT Offshore Staffing and Digital Marketing Services.

We are servicing over 500 clients from across the globe. We are a strong 150+ member family at the moment working from state of the art office premises close to Saket, South Delhi. Our primary operational markets are USA, UK, APAC and Middle East. To know more about us and our brands please visit http://www.saffrontech.net/" target="_blank">http://www.saffrontech.net/

• Collaborate well with engineers, researchers, and data implementation specialists to design and create advanced, elegant and efficient systems
• Good experience as a MEAN Stack Developer.
• In depth experience in  NodeJS, ExpressJS, Angular, Mongo DB, JavaScript.
  
• Experience implementing applications using Angular 1 or React
• Experience creating front end applications using HTML5, Angular, LESS/SASS
• Hands on experience with JavaScript Development on both client and server-side
• Experience with modern frameworks and design patterns, minimum one-year experience with MEAN Fullstack paradigm.

• Working with the product team to develop new features focused on improving the user experience
• Improving existing features and working on streamlining client implementations through improved tools
• Improving our technical architecture and building out a continuous integration pipeline
• Modernizing our front-end in new frameworks
• Everything else - our team is small and you'll likely be involved in almost every tech-related thing going on
  
  

Requirements

• 1+ years of experience building consumer-facing web apps
• You are interested in the full-stack opportunity and love building a feature from start to finish
• Self-starter with a deep interest in tech - we want someone who will come in with opinions, and shape our engineering practices and decisions for the better
• An eye for design - you'll have an important role in making the product look great
• Believe in our mission and love the idea of working in education to help students succeed
  
  

Technologies you'll work with:

• NodeJS, http://sails.js/">Sails.JS
• http://react.js/">React.js, Redux, Redux-Saga
• Kubernetes, Postgres, ElasticSearch, Redis, RabbitMQ
• Whatever else you decide - we're constantly re-evaluating our stack and tools
• Having prior experience with the technologies is a plus, but not mandatory for skilled candidates.

Benefits

• Remote Option - You can work from any location of your choice
• Reimbursement of Home Office Setup
• Competitive Salary
• Friendly atmosphere
• Flexible paid vacation policy