11+ UML Jobs in Mumbai | UML Job openings in Mumbai

Job Responsibilities:

- Design and develop high-volume, low-latency applications for mission-critical systems, delivering high-availability and performance.

- Contribute in all phases of the development lifecycle: concept, design, build, deploy, test, release to app stores and support.

- Diagnose performance issues, fix bugs (including crashes and ANRs) to increase the functionality of the application.

- Write well designed, testable, efficient code.

- Ensure designs are in compliance with specifications

- Prepare and produce releases of software components

- Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review

Desired Profile :

B.Sc. (CS or IT) + MCA/ BCA + MCA/ B.Tech. /B.E. (CS or IT) .

Experience required- 1 - 2 years

- Subject Proficient in Java/Kotlin programming

- Knowledge and experience in Flutter Framework and DART programming

- Hands on experience in using RESTful APIs

- Hands on experience in designing and developing micro-services architecture and containers

- Object oriented analysis, UML and design using common design patterns.

- Hands on experience in development IDE Android Studio, Android SDK, Firebase Test Lab

- Experience with offline storage, threading, and performance tuning

- Familiarity with push notifications

- Familiarity with IOS integration with Flutter

- Experience using GitHub or similar environment

- Complete understanding of SDLC

- Experience with Agile development

- Experience with Material Design and Android UI design principles, patterns and best practices

- Good knowledge of adding third-party libraries for Eg. Twilio

- Ability to understand business requirements and translate them into technical requirements

CometChat Overview

CometChat is a full-stack conversational platform built to unify every layer of interaction - bringing together real-time conversations (chat, messaging, voice, and video), AI Agents, moderation, notifications, and analytics in one modular, developer-first solution.

We were also recognized on Forbes' 2026 America's Top 500 Startup Employers List - a reflection of the team and culture we've been deliberate about building.

We believe the interface of the future is conversation - not clicks. Every app will soon have an AI layer that's as native as text messaging today. That's why we're building the infrastructure for the world's AI-powered conversations - from human-to-human, to human-to-agent, to multi-party collaboration with AI in the mix.

From AI onboarding assistants that get users productive in minutes, to copilots that perform complex workflows in-app, to intelligent moderators that protect and guide communities in real time - our AI Agent platform makes it all possible.

With CometChat's ready-to-use UI kits, powerful SDKs, and our Full Stack AI Agent Platform, product teams across startups and enterprises can launch safe, scalable, and smart in-app interactions faster than ever.

Why Join Us Now

We're at the tipping point where AI becomes a native part of every conversation. At CometChat, you'll help shape a future where users can talk to their apps as naturally as to a friend - where agents think, reason, act, and collaborate with humans in real time.

You won't just be joining a product team - you'll be building the standard for AI interaction layers: agent-aware UI, intelligent guardrails, rich actions libraries, and multi-party collaboration between people and AI.

If you want to help define how the next billion users will communicate - and push the boundaries of what's possible in real-time, AI-powered engagement - we'd love to work with you.

What we mean by AI-native

AI-native here means you build with agents by default. We expect 100% of the code to be generated via agentic tools (Cursor, Claude Code, and similar), while you own everything that actually matters: problem framing, architecture, tradeoffs, review quality, tests, performance, and security. This is not "vibe coding." The code is generated. The thinking is yours. You should be great at steering agents, validating output, catching subtle issues early, and debugging code you did not manually write.

Why AI-native

Software development is changing permanently, and we are leaning all the way in. You will work in a team that ships fast with agents, where your leverage comes from judgment and systems thinking rather than typing speed. You will get access to whatever AI tools you need (Cursor, Claude Code, or anything else that makes you effective), and the freedom to use them aggressively. If you want to operate at the edge of how modern engineering gets done and level up your output, this role is built for that.

Join us to build where AI meets human connection.

Position Overview & Priorities

We are looking for versatile and experienced technical additions to our development team. The position offers an extensive amount of ownership and influence over our development process as we scale the team. We’re looking for people who enjoy solving meaningful problems and love seeing the things they build in the hands of real users.

Primary responsibility would be:

• Designing and building applications/SDK for the iOS platform
• Ensuring the performance, quality, and responsiveness of applications
• Collaborating with a team to define, design, and ship new features
• Defining correct architecture and following the right design principles.
• Helping maintain code quality, organization, and automatization

Work Location

Chembur, Mumbai

Prioritized Experiences and Capabilities

• Minimum 2-5 years of experience in iOS app development
• Leverage AI-native development workflows, including agentic IDEs and coding assistants (e.g., Cursor, Claude Code), to accelerate delivery while maintaining code quality, security, and engineering standards.
• Proficiency with Objective-C and Swift.
• Experience in iOS frameworks such as Core Data, Core Animation, etc.
• Experience with offline storage, threading, and performance tuning
• Familiarity with RESTful APIs to connect iOS applications to back-end services
• Knowledge of other web technologies and UI/UX standards
• Understanding of Apple’s design principles and interface guidelines
• Knowledge of low-level C-based libraries is preferred
• Familiarity with cloud message APIs and push notifications
• Knack for benchmarking and optimization
• Proficient understanding of code versioning tools
• Familiarity with continuous integration

1. Integrate the design into high quality code
2. Ensure the performance, quality, and responsiveness of application
3. Identify and correct bottlenecks and fix bugs
4. Work along-side other developers working on different platform for the Application.
5. Therefore, commitment to collaborative problem solving, design implementation and creating quality product is essential

1. Minimum 2 years of experience in iOS Application Development
2. Proficient with iOS SDK, Swift and Cocoa Touch
3. Understanding of Apple's design principles and interface guidelines
4. Must have already deployed at least one app on AppStore
5. Working knowledge of Web Services & REST (JSON) APIs, SQLite, Google API
6. Integration, Firebase
7. Familiarity with cloud message APIs and push notifications
8. Experience with third-party libraries and APIs
9. Strong mobile UI design and implementation experience
10. Understanding of code versioning tools

Responsibilities

• Lead the app team to develop apps using Flutter for both Android & iOS platforms.
• Implement best practices for app development, usage tracking, and issue fixes.
• Do regular code reviews to ensure code quality.
• Be an individual contributor to write quality code that is simple, reliable, and scalable.
• Implement test-driven development.
• Ensure the best performance and user experience of the application.
• Work with the team to manage, optimize, and customize multiple applications.
• Evaluate and implement out-of-the-box ideas for application development.

Required Skills

• Must have 8+ years of experience in native mobile development (Android / iOS).
• Must have 2+ years of experience in Flutter with Dart.
• Must have worked and successfully deployed apps on play-store/app-store using Flutter.
• Experience with any of the state management solutions like Bloc, Provider, Mobx, etc.
• Extreme attention to detail and the ability to match the design as closely as possible.

Job Perks

• Get to work with a highly passionate team of engineers.
• Open and embracing culture towards the latest hot technologies.
• A high level of freedom & responsibility.
  
  

About

Our client is a platform of digital-first health clinics owned and operated under one house, with each of them working together toward one mission: To help Indians lead a more fulfilling life surrounded by wellness and grace.

The business is creating a family of purposeful health platforms with personalized solutions for a particular problem in a niche segment. Each platform provides the essentials to enable an individual segment of people to lead a graceful life full of purpose and wellbeing. 

Requirement

• We are looking for an Android developer responsible for the development and maintenance of existing applications along with continuous integration of new features, who can take the ownership and work independently.
• At least 2 years of experience with MVVM architecture
• 5-8 years of experience with Android development
• Extensive experience of 3rd party integration
• Good knowledge of Java and Kotlin
• Good Logical ability
• Notification and Payment Gateway experience
• Adaptation to new technologies
• Able to design dynamic complex U
• Experience building custom SDK
• Experience with Multi Module Application

Responsibilities

• Integrate the design into high-quality code.
• Ensure the performance, quality, and responsiveness of an application.
• Identify and correct bottlenecks and fix bugs.
• Work alongside other developers working on a different platform for the Application. Therefore, commitment to collaborative problem solving, design implementation, and creating a quality product is essential.

Soft Skills :

• Positive attitude
• Good analytical skills
• Hungry for growth
• Problem-solving

At Cityflo, we are solving the problem of commuting to the office which affects employees in big, populated Indian cities every day. Cityflo provides a bus experience like no other - we run premium AC buses for daily commuters.  We’re changing the way urban Indians commute and enabling everyone to reclaim hours of their time every day. Before the imposed lockdown due to coronavirus, we were serving about 7500 commuters per day. We plan to scale to 5,00,000 rides per day in the next 4 years in a profitable and sustainable manner.

We're looking for people who are passionate about creating great Android applications.
You've been around for a few API levels and you know how to delight Android users. You’ve got an eye for the beautiful Android design our users expect and an attention to detail down to the very last dpi. You know your way around the View hierarchy and are eager to partner with Product and Design to craft efficient, performant, and delightful user experiences. You like building for the long term and value patterns and structures that allow for maximum flexibility in a constantly evolving product.

You can read more about our engineering and culture on our blog: https://blog.cityflo.com/tag/engineering/" target="_blank">https://blog.cityflo.com/tag/engineering/

What you should have:

• At least three years of engineering experience, a large portion of which in a team environment
• Bachelors/Masters degree in Computer Science, Engineering, or a related subject.
• Strong computer science fundamentals: data structures, algorithms and programming languages
• Experience working closely with product teams, designers, and other developers to create a truly delightful mobile experience
• Familiarity with design concepts and constraints on mobile platforms.
• Extensive understanding of Android framework components and their respective lifecycles
• Experience developing highly performant Kotlin code and view layouts and the ability to diagnose performance bottlenecks
• A disciplined approach to development, testing, documentation and code structure in a team environment
• Familiarity with the Android tool ecosystem for development, testing, debugging, and performance benchmarking
• An excellent understanding of best practices for concurrency and threading
• MVVM design architecture pattern for android.

Preferred skills:

• Open Source contributions & participation in programs like Google Summer of Code are a plus.
• Have published one or more Android apps on the Play Store.
• Dependency injections: Dagger, Koin.
• Multi-threading and coroutines in Kotlin/Rxjava.