
About Duplex Technologies Services
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What We Expect:
- Min 3 years of mobile development experience, with Flutter & Dart.
- Proven ability to build and scale real-time, high-performance fintech applications.
- A sharp eye for stunning UI/UX design that balances aesthetics with seamless functionality.
- Mastery over state management solutions (Provider, Riverpod, BLoC, or similar).
- Hands-on experience with real-time data streaming, push notifications, and WebSockets.
- Strong expertise in security, encryption, and compliance—you know fintech demands precision.
- A track record of integrating RESTful APIs, GraphQL, and third-party services into flawless mobile apps.
- A mindset that thrives under pressure—we work fast, and we expect results.
- Lead the development of world-class fintech mobile applications that redefine user expectations.
- Architect and optimize blazing-fast, low-latency Flutter applications for financial markets.
- Work with designers, backend engineers, and product teams to craft seamless, intuitive, and ultra secure user experiences.
- Solve hard problems at scale—whether it’s optimizing performance, reducing load times, or ensuring absolute security.
- Push the boundaries of mobile fintech innovation, from AI-powered insights to predictive analytics.
- Own your work end-to-end—no excuses, no hand-holding, just results.
Must-Have Skills:
- Min 3 years of mobile development experience, with 2+ years in Flutter & Dart.
- Proven ability to build and scale real-time, high-performance fintech applications.
- A sharp eye for stunning UI/UX design that balances aesthetics with seamless functionality.
- Mastery over state management solutions (Provider, Riverpod, BLoC, or similar).
- Hands-on experience with real-time data streaming, push notifications, and WebSockets.
Why Join Us?
- Work with some of the sharpest minds in fintech and mobile engineering.
- Build products that traders, investors, and financial professionals rely on daily.
- A culture that values bold innovation, fast execution, and pushing boundaries.
- Expect challenges, high expectations, and relentless pursuit of excellence.
- Take complete ownership—from ideation to deployment, every pixel and every line of code should scream excellence.
- Competitive compensation, performance-driven growth, and a real opportunity to lead and shape the future of fintech mobile applications.
● Work on a disruptive product that’s still in its early stage
● Be responsible for the development and maintenance of the Buyer app
aimed at a vast number of diverse Android devices.
● Translate designs and wireframes into high-quality code
● Ensure the best possible performance, quality, and responsiveness of the
BUYER app.
● Mentor other engineers, defining our technical culture and helping to build a
fast-growing team
You should apply if you:
● possess 2+ years of experience in product development, architecture, and
design.
● Experienced in Java or Kotlin
● Constantly learning and looking for ways to improve yourself and the
processes around you.
● Have strong knowledge of Android SDK, different versions of Android, and
knowhow to deal with different screen sizes
● Proficient with restful API to connect Android applications to back-end
services
mentor and support other team members by doing code reviews and apply your
experience in process and technical leadership.
● work in agile team environments and are a self-starter, conscientious member of
the team.
● Good in pixel-perfect implementation of Design
skills set-Dart,object oreinted concept,flutter,material design,bloc,Async,streams,Navigation,Android,Ios,Mobile application,Restful api,TCP,Web sockets,GIT.
Years of experience-1+yrs
Roles and Responsibilities
- Good programming skills in Dart and Object-Oriented concepts.
- Experience with Flutter - Material design, BLOC, Async, Streams, Navigation.
- Exposure to Android and iOS Mobile Application Stack.
- Experience in working with RESTful APIS, TCP / Sockets.
- Knowledge in version control - Git
- Collaborating with cross-functional teams to define, design, and ship new features
- Working with outside data sources and APIs
- Unit-testing code for robustness, including edge cases, usability, and general reliability.
- Working on bug fixing and improving application performance.
- Continuously discovering, evaluating, and implementing new technologies to maximize development efficiency.
Candidate Profile:
- B.E. / B.Tech. / MCA in Computer Science, Engineering, or related fields is required.
- Proven software development experience and Android skills development
- Proven working experience in Android app development and have published at least one original Android app.
- Experience with Android SDK
- Experience working with remote data via REST and JSON
- Experience with third-party libraries and APIs
- Working knowledge of the general mobile landscape, architectures, trends, and emerging technologies
- Solid understanding of the full mobile development life cycle.
XCUI, Fastlane
• Experienced in building high quality, scalable, reusable code
• Experience with necessary compliance and mandatorily need exposure to having
successfully submitted an app to the Appstore
• Knowledge and demonstrable work on the current iOS platform SDK
• Strong understanding of multi-tier architectures, design patterns and good engineering
practices.
• Knowledge on how to implement and manage RESTful API's.
• Strong communication skills
• Great team player who inspires, innovates, and delivers results to add value and make a
difference
• User-centric /customer-centric focused, embrace Agile XP practice, and possess a learning
mindset
DUTIES AND RESPONSIBILITIES:
- Design and build applications for the iOS platform
- Implement new features while maintaining overall quality of software
- Contribute to a culture of learning by documenting and sharing technical knowledge as a developer on an agile squad
- Participate in developer communities of practice by following best practices, participating in code reviews, and sharing knowledge
- Remain current on relevant technology trends
- Participate in researching and resolving customer issues
- Other duties as assigned
MINIMUM KNOWLEDGE, SKILLS AND ABILITIES REQUIRED:
- Proficient in native development with Swift and Objective-C
- Experience building interface components and experiences using Swift UI and WebKit and understanding their limitations
- Knowledge and experience working with the MVVM design pattern
- Prior experience with knowledge of Git and GitHub
- Knowledge of iOS back-end services
- Knowledge of Apple’s design principles and application interface guideline
- Understanding of the full software development lifecycle
- Familiarity with security best practices for software development
Job Brief
We are looking for a Sr. Android developer with 6+ years of experience who will be responsible for the development and maintenance of applications aimed at a vast number of diverse Android devices. Your primary focus will be the development of Android applications and their integration with back-end services. You will be working alongside other engineers and developers working on different layers of the infrastructure. Therefore, commitment to collaborative problem solving, sophisticated design, and creating quality products is essential.
Main Responsibilities of an Android Developer
Your responsibilities will include:
-
Writing clean and efficient codes for Android applications.
-
Monitoring the performance of live apps and work on optimizing them at the code level.
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Identifying and resolving bottlenecks, rectifying bugs, and enhancing application performance.
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Performing unit and instrumentation tests on code.
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Collaborating with cross-functional teams to define and design new features.
-
Staying up to date with new mobile technology trends, applications, and protocols.
Key Requirements
-
Degree in Computer Science, Engineering, or equivalent field.
-
You have prior experience as an Android Developer using Kotlin, Java, and Android SDK and Android NDK will be a plus but not compulsory.
-
The candidate should have experience in publishing applications on the Google Play store.
-
Proven work experience in design patterns mobile architecture using frameworks such as MVVM/MVC/MVP.
-
Familiarity with RESTful APIs to effectively integrate Android applications.
-
Proficient understanding of code versioning tools such as Git.
-
Familiarity with various testing tools.
Your passion and interest in your work is the key to success for you, so if you are looking for your dream place where you can show up and enjoy your work then we could be the right match for each other, so let's connect to be the part of the amazing journey to do something innovative.
• Build custom packages in Flutter using the functionalities and APIs already available in native Android and IOS.
• Translate and Build the designs and Wireframes into high-quality responsive UI code.
• Write efficient queries for core Data.
• Use of Model-View-Controller ( MVC) and Model-View-ViewModel-Controller (MVVM) as it relates to designing, developing architecture and developing maintainable, testable and functional software that meets product requirements.
• Explore possible architectures for implementing new features.
• Resolve any problems existing in the system and suggest and add new features in the complete system.
• Suggest space and time-efficient Data Structures.
• Follow the best practices while developing the app and also keeping everything structured and well documented.
• Use CI/CD for smooth deployment.
• Document the project and code efficiently.
• Manage the code and project on Git in order to keep in sync with other team members and managers.
• Communicate with the Project Manager regarding the status of projects and suggest appropriate deadlines for new functionalities.
• Ensure security guidelines are always followed while developing the app.
• Validate the cloud system to ensure any new changes do not compromise the security of the backend server.
• Suggest new features and/or enhancements.
• Consulting with our customer-facing representatives about software system design and maintenance.
• Interact with the Clinical Specialists and Product Manager to help understand end-user feedback. • Maintaining software through product lifecycle including design, development, verification and bug fixes.
• Connect regularly with the Quality Assurance Specialist to deliver a stable app.
• Resolve all the bugs reported by the Quality Assurance Specialist in a timely manner. • Perform time profiling and memory leaks assessment.
• Execute app verification protocol.
• Write tests for the App.
• Following company policies and quality procedures to ensure quality product deliverables.
Requirements: Must Have:
• Flutter: To build cross-platform mobile apps for Android, IOS and Web.
This should include from making responsive UIs to efficiently query data and also manage states in an optimized manner.
• Native Android and IOS: To build custom Flutter Packages.
• Firebase: Should have experience with Cloud Firestore, Push Notifications, Cloud Functions and Analytics.
• Adobe XD: Should know how to use Adobe XD to use the design file and use it to build the app.
• Git: To manage and collaborate in different projects with the rest of the team.
Good To Have: • Angular • Bootstrap • JavaScript
1. At least an undergraduate degree in Computer
Science, Engineering, preferably from IITs/Top RECs.
2. 1-4 years of experience at cutting edge organisations
or startups.
3. Extensive experience in developing mobile apps using
Android SDK with proficiency in Core Java and design
patterns.
4. Experience with e business/e commerce applications
and business environment is a must.
5. Any experience with internet companies will be a plus.
6. Great understanding of Android development SDK and
Kotlin.
7. Expertise in Core Java with solid OOD principles and
design patterns.
8. Good grasp of algorithms, design patterns, memory
management and multithreaded programming.
9. Conversant with JSON, XML, Web services API.
10. Experience with SaaS platforms for mobile
development like Analytics, Push Notifications, Cloud
Storage, Ad Networks, etc.
11. Hands-on experience with Android's debugging, unittesting, memory and performance optimization tools.
12. Great people skills









