
We are looking for a UI Designer to create visually appealing, user-friendly digital experiences. The ideal candidate will have a strong understanding of design principles, typography, and color theory, with a keen eye for detail. You will work closely with UX designers, developers, and product managers to ensure seamless user interfaces across web and mobile applications.
Key Responsibilities:
- Design aesthetically pleasing and intuitive user interfaces for web and mobile applications.
- Create wireframes, high-fidelity mockups, and interactive prototypes using tools like Figma, Sketch, or Adobe XD.
- Develop and maintain UI design systems, style guides, and reusable components.
- Collaborate with UX designers to translate user research and wireframes into pixel-perfect UI designs.
- Ensure consistency in branding, typography, and visual hierarchy across all digital products.
- Work with developers to ensure accurate implementation of designs.
- Optimize UI designs for accessibility, responsiveness, and performance.
- Stay updated with the latest design trends, tools, and best practices.

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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.
We are seeking a highly skilled and experienced Senior Flutter Consultant to join our team. As a Senior Flutter Consultant, you will play a critical role in developing innovative and user-friendly mobile applications for our clients. You will collaborate with cross-functional teams, including designers, developers, and project managers, to deliver high-quality solutions that meet our clients' business objectives.
Responsibilities:
- Develop and maintain Flutter applications for iOS and Android platforms.
- Collaborate with designers and developers to translate wireframes and UI designs into fully functional mobile applications.
- Provide technical expertise and guidance to the development team regarding best practices for Flutter application development.
- Write clean, efficient, and maintainable code that adheres to industry standards and project requirements.
- Conduct code reviews and provide constructive feedback to ensure code quality and performance optimization.
- Troubleshoot and debug issues, identify bottlenecks, and propose effective solutions to technical challenges.
- Stay updated with the latest trends and advancements in the Flutter framework and mobile app development.
- Mentor and coach junior developers, sharing knowledge and promoting a culture of continuous learning and improvement.
- Collaborate with project managers and clients to understand their requirements, provide technical insights, and deliver solutions within the agreed timelines.
- Participate in Agile/Scrum development processes, including sprint planning, backlog grooming, and daily stand-ups.
Requirements:
- Bachelor's degree in Computer Science, Engineering, or a related field.
- Minimum 3 years of professional experience in mobile application development, with at least 2 years of hands-on experience with Flutter.
- Strong proficiency in Dart programming language and Flutter framework.
- Extensive experience in building and deploying mobile applications on both iOS and Android platforms.
- Solid understanding of software development principles, including object-oriented programming, design patterns, and architectural best practices.
- Experience with RESTful APIs, third-party integrations, and asynchronous programming.
- Knowledge of version control systems (e.g., Git) and experience with collaborative development workflows (e.g., GitFlow).
- Familiarity with mobile app testing frameworks and tools, such as Flutter testing framework, XCTest, and Espresso.
- Excellent problem-solving and debugging skills, with the ability to analyze complex issues and propose effective solutions.
- Strong communication and interpersonal skills, with the ability to effectively collaborate with cross-functional teams and clients.
- Experience working in an Agile/Scrum development environment.
- Proven ability to meet deadlines and deliver high-quality work in a fast-paced, dynamic environment.
Preferred Qualifications:
- Experience with hybrid app development frameworks (e.g., React Native) is a plus.
- Knowledge of backend technologies, such as Node.js or Firebase, for building APIs and integrating with databases.
- Contributions to open-source projects or personal Flutter app projects.
- Certifications related to mobile app development or Flutter.
Join our team and contribute to the development of cutting-edge mobile applications using Flutter. As a Senior Flutter Consultant, you will have the opportunity to work on diverse projects, leverage your expertise, and make a significant impact on our clients' businesses.
Roles and Responsibilities
- Developing and implementing HR strategies and policies that support the organization's goals and objectives
- Overseeing the recruitment and selection process, including job postings, candidate screening, and interviewing
- Ensure complete attendance of employees
- Responsible for performing day-to-day HR tasks.
- Handling end-to-end executive search for Real Estate
- Handling mid-level and senior-level profiles.
- Headhunting & Mapping.
- Developing and maintaining a network of contacts to help identify and source qualified candidates.
- Using optimum Channel Mix to source the right talent within the agreed Turn Around Time
- Explore the market best practices in recruitment and implement them
- Adequate and prompt coordination of interviews
- Final Negotiations till the closure of the vacancy.
Desired Candidate Profile
- Excellent verbal and written communication skills.
- Excellent interpersonal and conflict resolution skills.
- Excellent organizational skills and attention to detail.
- Strong analytical and problem-solving skills.
- Strong supervisory and leadership skills.
- Thorough knowledge of employment-related laws and regulations.
- Knowledge of and experience with various human resource information systems.
- Proficient with Microsoft Office Suite or related software
Perks and Benefits
- Good Working Environment
- Salary negotiable
QA Engineer
Job Description
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About the job: We have a requirement forQA Engineer. It primarily involves Analyzing project requirements, Preparing test plan, API testing, and preparing test reports |
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Role: Role will be of QA Engineer |
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Location: Bangalore/Ahmedabad |
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Primary Skills: Manual Testing, No SQL, Web API Testing, API testing using postman/SoapUI etc,
Good to Have: Automation and Selenium Automation
Responsibilities:
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Organizational Support: We guarantee that you will experience an exceptionally warm hearted workplace and a big scope for career growth with extraordinary learning about testing tools. Your careers will soar to skies by working with us to realize our dream of building a world class center of excellence for automation.
Our experienced architects will step in to help finalize and propose architecture and framework aspects. Our full-fledged process department provides timely guidance on processes. In rare cases, if there is guidance required on people management front, an experienced HR team will always be available.
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Educational Qualifications ,Certifications & Experience : ● BE Computer Science ● Ideal Experience Range: Ideally, you should have spent between 2-3 years in IT industry to have first-hand experience of above mentioned responsibilities; however, Sigma is open to consider bright persons with lesser experience.
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Sigma believes in, and promotes non-discriminatory hiring. We never hire based on religion, sex, origin, race, physical ability and age. |
Basic Qualifications:
- 2+ years of non-internship professional software development experience
- Programming experience with at least one modern language such as Java, C++, or C# including object-oriented design
- 1+ years of experience contributing to the architecture and design (architecture, design patterns, reliability and scaling) of new and current systems.
Additional Job requirements
- BS/MS/PhD in Computer Science/Math or equivalent
- BS in computer science or related field.
- 2+ years of relevant professional software development experience: designing, developing, and delivering software written in Java, C#, or C++, web development.
- Knowledgeable in object-oriented design patterns.
- Experience building highly scalable and distributed systems
Preferred Qualifications
- Experience with service-oriented architecture and application/services development
- Passion for performance debugging and benchmarking
Implement DevOps capabilities in cloud offerings using CI/CD toolsets and automation
Defining and setting development, test, release, update, and support processes for DevOps
operation
Troubleshooting techniques and fixing the code bugs
Coordination and communication within the team and with client team
Selecting and deploying appropriate CI/CD tools
Strive for continuous improvement and build continuous integration, continuous
development, and constant deployment pipeline (CI/CD Pipeline)
Pre-requisite skills required:
Experience working on Linux based infrastructure
Experience of scripting in at-least 2 languages ( Bash + Python / Ruby )
Working knowledge of various tools, open-source technologies, and cloud services
Experience with Docker, AWS ( ec2, s3, iam, eks, route53), Ansible, Helm, Terraform
Experience with building, maintaining, and deploying Kubernetes environments and
applications
Experience with build and release automation and dependency management; implementing
CI/CD
Clear fundamentals with DNS, HTTP, HTTPS, Micro-Services, Monolith etc.
Primary responsibilities:
- Architect, Design and Build high performance Search systems for personalization, optimization, and targeting
- Designing systems with Solr, Akka, Cassandra, Kafka
- Algorithmic development with primary focus Machine Learning
- Working with rapid and innovative development methodologies like: Kanban, Continuous Integration and Daily deployments
- Participation in design and code reviews and recommend improvements
- Unit testing with JUnit, Performance testing and tuning
- Coordination with internal and external teams
- Mentoring junior engineers
- Participate in Product roadmap and Prioritization discussions and decisions
- Evangelize the solution with Professional services and Customer Success teams
Minimum requirements:
- Tech/M.Tech in computer Engineering or related fields or MCA
- At least 10-14 years of software development experience
- Expert in Java, Scala or any other object oriented language
- Proficient in SQL concepts (HiveQL or Postgres a plus)
- Additional language skills for scripting and rapid application development
Desired skills and experience:
- Working with large data sets in the PBs
- Familiarity with UNIX (systems skills a plus)
- Working experience in Solr, Cassandra, and Kafka
- Working in a distributed environment and has dealt with challenges around scaling and performance
- Working with distributed teams across multiple locations
Growth Marketing Manager
Experience - 2.0 to 6.0 Year(s)
Location - Delhi
Working days - 5
Qualification - Any Graduate (Full time)
Skills: 2 years Hands-on Experience on Facebook or Google Marketing | Excel & data analytics skill set
Job Responsibilities:
- Ownership of growing app base through Digital Marketing channels (FB, Insta, Google, Tiktok++)
- Collaborate with the business(category) and creative team in devising communication strategy (creative & messaging) & bringing this to life
- Lead larger business decisions by working with the digital team in creating, analysing & optimizing growth data sets to deliver insights
- Monitor & optimize ROI driven campaigns regularly to meet demand, revenue and budget goals
- Work with product and data engineering teams to design systems and processes for efficiencies leading to exponential growth
Job Requirements:
- 2 years Hands-on Experience on Facebook or Google Marketing
- Excel & data analytics skill set (SQL knowledge is a plus)
- Strong with number crunching
- Analytical bent of mind; can break down data and assess it efficiently
- Willing to learn in fast-paced startup ecosystem with Result-driven mindset
- Ability to work under pressure, tight timelines & handle uncertainty
- Ability to manage and prioritize multiple projects and tasks simultaneously
- Strong interpersonal, time management, and problem-solving skills
About Role:
Leads demand growth for the platform. Driving New-Users & More-Usage as key mandates. Missioned to unlock rapid adoption (in a profitable way) with Strong Consumer Intelligence, Offering & Pricing strategy, Zero-$ hacks, Strategic Partnerships, Large Media campaigns etc. Digital Growth team plays a key role in Driving New-User acquisition. Working end to-end in planning digital strategy, executing for all channels & driving performance/demand.








