Application Security Engineer

Position: Senior React Native Developer (4- 7 years)

Location: Remote (Company in Mumbai)

Company: Big Rattle Technologies Private Limited

Immediate Joiners only.

Summary:

We're looking for a seasoned React Native developer who has shipped production-grade mobile apps on both iOS and Android — ideally in the high-traffic, high-stakes world of e-commerce. You'll own the mobile experience end-to-end: architecture, performance, and flawless UX across devices.

Note: We are looking for a senior expert who has delivered multiple apps that are built from scratch and hosted on Apple Store/ Play Store i.e. e2e lifecycle.

KEY RESPONSIBILITIES

• Design and build scalable React Native apps for both iOS and Android from scratch to App Store / Play Store deployment.
• Architect complex e-commerce flows — product catalogues, cart, checkout, payment gateway integration, and order tracking.
• Optimize app performance: reduce TTI, maintain smooth 60fps animations, and manage memory on low-end devices.
• Integrate REST and GraphQL APIs; manage state with Redux Toolkit, Zustand, or React Query.
• Implement push notifications, deep linking, in-app navigation, and offline-first strategies.
• Write clean, well-tested code; maintain CI/CD pipelines using Fastlane, GitHub Actions, or Bitrise.
• Collaborate with designers, backend engineers, and product managers in Agile sprints.
• Conduct code reviews and mentor junior mobile developers.

Required Skills:

Core Mobile

▸ React Native CLI & Expo

▸ TypeScript

▸ React Navigation v6+

▸ iOS (Swift basics) & Android (Kotlin basics) ▸ Xcode & Android Studio

E-commerce & Integrations

▸ Product / Cart / Checkout flows

▸ Razorpay, Stripe, PayPal SDKs

▸ Wishlist, search UX, filters

▸ Order tracking & delivery status

▸ Push notifications & deep linking

State & Data

▸ Redux Toolkit / Zustand

▸ React Query / SWR

▸ REST & GraphQL APIs

▸ AsyncStorage / MMKV

▸ Firebase Realtime DB / Firestore

DevOps & Tooling

▸ Fastlane & GitHub Actions / Bitrise

▸ Jest (unit) & Detox (E2E)

▸ Firebase Crashlytics & Sentry

▸ Flipper / Reactotron

▸ App Store & Play Store deployments

Nice to Have skills: New Architecture · RN Web · AR try-on · RTL support · Shopify SDK · WCAG · Maps SDK

• React Native New Architecture (JSI / Fabric / TurboModules)
• React Native Web or monorepo setups (Nx, Turborepo)
• AR product try-on experiences (ARKit / ARCore)
• Shopify Storefront API or WooCommerce SDK experience
• Accessibility (WCAG mobile) implementation
• Live order-tracking maps (Google Maps / Mapbox)

Required Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or a related technical field.

Why should you join Big Rattle?

Big Rattle Technologies specializes in AI/ ML Products and Solutions as well as Mobile and Web Application Development. Our clients include Fortune 500 companies. Over the past 13 years, we have delivered multiple projects for international and Indian clients from various industries like FMCG, Banking and Finance, Automobiles, Ecommerce, etc. We also specialise in Product Development for our clients.

Big Rattle Technologies Private Limited is ISO 27001:2022 certified and CyberGRX certified.

What We Offer:

• Opportunity to work on diverse projects for Fortune 500 clients.
• Competitive salary and performance-based growth.
• Dynamic, collaborative, and growth-oriented work environment.
• Direct impact on product quality and client satisfaction.
• 5-day hybrid work week.
• Certification reimbursement.
• Healthcare coverage.

• Lead Management & Conversions: Engage with leads from marketing, inbound queries, or prospecting; understand their needs and convert them into clients.
• Product Demonstrations & Consultations: Showcase how TrioChat helps businesses automate customer outreach, drive engagement, and maintain compliance.
• Full Sales Cycle Ownership: Manage the entire process from prospecting → demos → proposal → closing, ensuring timely follow-ups and pipeline health.
• Sales Targets: Consistently meet and exceed monthly/quarterly revenue goals.
• Cross-functional Collaboration: Work closely with marketing (lead-gen), product (feedback), and customer success (onboarding/retention).
• Daily Calling Commitment: Dedicate at least 4 hours daily to prospect and client calls (cold calls, demos, and follow-ups).

🚀 We're Urgently Hiring – Node.js Backend Development Intern

Join our backend team as an intern and get hands-on experience building scalable, real-world applications with Node.js, Firebase, and AWS.

📍 Remote / Onsite

📍 📅 Duration: 2 Months

🔧 What You’ll Work On:

Backend development using Node.js

Firebase, SQL & NoSQL database management

RESTful API integration

Deployment on AWS infrastructure

Responsibilities:

• Research, design and build highly reliable, available and scalable solutions that can

handle Millions of API calls across systems.

• Own large technical deliverables and execute in a structured manner, complete ownership

of functional Services that your team is responsible for.

• Take the accountability of the overall health of the products you build and predictability

of the deliverables of your team.

• Platformism components as libraries, utilities and service and promote reuse.

• Be able to conceptualize and develop prototypes quickly.

Requirements

• Ability to take ownership of projects under the guidance of your mentor.

• Must be an excellent problem solver.

• Must be familiar with one of the languages Java, Spring, Hibernate, microservices etc.

object-oriented high level proprietary or open-source language with strong programming

constructs.

• Solid understanding of DS and algorithms, OOP concepts, and MVC architecture.

Roles and Responsibilities

§ Writing, editing and publishing engaging content for various social networks, including Instagram, Linkedin, Twitter and Facebook etc.

§ Tracking and reporting on social media responses by analyzing traffic to the site

§ Update our social media pages with compelling company news, events, celebrations or solutions and services

§ Respond to questions and comments on our social media pages in a timely and accurate manner

§ Maintaining a visible online on social media presence and adhering to the marketing goals

§ Increasing the company's awareness and readership by using relevant advertising techniques

§ Optimize social media content (language, message, tone) on the basis of the behaviour of our target audience

§ Familiarity with paid advertisement and aware about different websites, and tools for creating graphics, images and video content

§ To create a range of engaging digital content such as Marketing and      

 Promotional videos and Reels to be used across a variety of online

 platforms and social media channels.

§ To help us maximise our online profile and develop our ever-growing social media presence through the creation of video driven strategies and digital media content.

§ Pays attention to trends on Instagram Reels creating and analyzing what works for our business.

§ Coordinate with the creative department to create advertising/engagement posts (e.g. for Company Events, Job posts, etc.)

§ Contribute to the creation of various content materials including: Blogs, Articles, Website Pages, Email templates, Social Media posts etc

§ Develop a deep understanding of MHFAI’s business, brand voice, and target audiences.

§ Develop posts and articles on a wide range of topics that resonate with our target audience and drive traffic to our website

§ Proofread and edit content to ensure high-quality standards, including grammar, spelling, and punctuation

§ Continuously discover and implement new editing technologies and      industry best practices to maximize efficiency

§ Requirements and skills

§ 3+ years of solid experience in digital content marketing or related fields

§ Excellent written and oral Communication skills

§ The ability to create original web content with images or videos

§ Proven work experience as a Social Media content writer or a similar role

§ Hands-on experience using various social media platforms to advertise

§ Proven record of excellent writing demonstrated in a professional portfolio

§ Ability to work independently with little or no daily supervision

§ Working knowledge of SEO, analytics tools, and keyword research

§ Strong research skills and the ability to synthesize complex information into clear and concise content

§ Creative thinking and the ability to generate innovative ideas

Assist in the formulation of strategies to build a lasting digital connection with consumers
    Plan and monitor the ongoing company presence on social media (Twitter, Facebook etc.)
    Launch optimized online adverts through Google Adwords, Facebook etc. to increase company and brand awareness
    Be actively involved in SEO efforts (keyword, image optimization etc.)
    Prepare online newsletters and promotional emails and organize their distribution through various channels
    Provide creative ideas for content marketing and update website
    Collaborate with designers to improve user experience
    Measure performance of digital marketing efforts using a variety of Web analytics tools (Google Analytics,WebTrends etc.)
    Acquire insight in online marketing trends and keep strategies up-to-date
    Maintain partnerships with media agencies and vendor.

MERN Stack Developer will work closely with the cross-team to discover effective and elegant solutions to complex problems.

·         Excellent knowledge of HTML, CSS, Material-UI and Responsive.

·         Strong concepts of Javascript, ReactJs, NextJS.

·         Should have Excellent Experience of Node.js.

·         In-Depth knowledge of Express Js, JavaScript, TypeScript,

·         Should have experience in MongoDB, My SQL, GraphQL, and any graph Database

·         Experience working with REST APIs, and Sockets.

·         Ability to Identify and fix production and non-production application issues as a part of the deployment.

·         Good Knowledge of AWS - Beanstalk, Cloud Watch.

·         Good Knowledge of JSON, API, and JWT.

·         Good to have Agile/JIRA/ Continuous Deployment experience.

·         Ability and willingness to manage multiple projects/tasks.

Job Responsibilities:

·         Should have completed B. Tech in IT / CS.

·         Understanding accessibility and security compliance (Depending on the specific project)

·         Understanding fundamental design principles behind a scalable application.

·         Good communication and language skills.

·         Strong focus on performance optimizations, caching, and scalability.

·         Ability to deal well with ambiguous/undefined problems; ability to think abstractly

About the role

We are looking for a Product Manager with experience of shipping features in a fast-paced environment. The candidate will own products under one of the verticals- Micro-savings, Micro-insurance or Micro-credit. The candidate will closely work with product managers, engineers, designers, marketers and business folks to identify product insights, create the product vision, drive development, launch high-quality product experiences and continuously iterate.

What We are Looking For

• Have a minimum 2 years of Product Management experience (not to be confused with total work ex). You should have shipped products/features in the past. This is non-negotiable.
• Demonstrated ability to lead teams and work cross-functionally in a highly collaborative but fast, changing and ambiguous environment.
• Understands the consumer through past experiences, research, and market data and ensures laser focus on the consumer during product development.
• Ability to think out of the box and on your feet.
• Excellent product design skills with solid experience in creating wireframes, storyboards, user flows and process flows
• Strong business acumen
• Intuitive but data-driven combining power of analytics and heuristics with innovative customer validation techniques
• Ability to marshall consensus and sell product vision both internally and externally.

You should apply If

• 2-5 years of experience in product management.
• You're passionate about building the best possible user experience and you monitor your metrics to see whether you're delivering
• Experience managing a team and developing internet or media products and technologies would be highly preferred.
• Experience in managing fintech products is highly desirable.
• End-to-end product management experience with software/web technologies (e.g. on mobile).
• You are comfortable with ambiguity, believe in first principles and have the skill to transform broad ideas into action plans
• You have empathy towards users and colleagues, are creative and excited by ideating/ building
• You have business acumen to appreciate and understand levers for business growth and profitability
• You seek high ownership, independent environments and feedback oriented cultures