Core iOS Engineer - Payments SDK

Qualifications:

• 10+ years native mobile development (iOS Swift + Android Kotlin)

• Proven experience building mission-critical, offline-first applications

• Deep understanding of mobile architecture patterns (MVVM, Clean Architecture)

• Expert-level API integration and data synchronization strategies

• Experience with emergency services, healthcare, or field operations software (preferred)

• Strong debugging, performance optimization, and memory management skills

• Demonstrated leadership in establishing mobile development best practices

TECHNICAL EXPERTISE:

• iOS: Swift 5.x, SwiftUI/UIKit, CoreData, CoreLocation, Background Tasks

• Android: Kotlin, Jetpack Compose, Room, WorkManager, Location Services

• Tools: Xcode, Android Studio, Git, Figma, Firebase, TestFlight/Play Console

• CI/CD: Fastlane, GitHub Actions, or similar automation tools

• APIs: RESTful services, JSON parsing, authentication/authorization

• Testing: XCTest, Espresso, automated UI testing frameworks

Responsibilities:

CORE RESPONSIBILITIES:

• Architect mobile applications for First Due's emergency response platform serving Fire and

EMS agencies nationwide

• Lead mobile development initiatives for the Hyderabad development center

• Design offline-first architectures ensuring reliability in low-connectivity emergency

scenarios

• Collaborate with cross-functional teams across US and India time zones

• Establish mobile CI/CD pipelines, coding standards, and quality assurance processes

• Mentor developers on mobile best practices and First Due's technology stack

• Drive sprint planning, velocity tracking, and technical roadmap for mobile development

• Ensure HIPAA compliance and data security for patient care reporting features

Work Location: Hyderabad, India

Work mode: Work From Office

Job Description

We are seeking a highly skilled Sr. Fullstack Mobile Developer with a passion for crafting exceptional mobile experiences and robust backend systems. This role demands a deep understanding of React Native, Node.js, and modern cloud ecosystems like AWS, combined with a commitment to best practices and continuous improvement.

As part of our team, you will work closely with cross-functional teams to design, build, and maintain high-performance mobile applications and scalable backend solutions for our clients. The ideal candidate is a team player with a growth mindset, a passion for excellence, and the ability to energize and inspire those around them.

Requirements

• Education: Bachelor’s degree in Computer Science, Engineering, or a related field.
• Experience: 4-6 years of professional experience as a Fullstack Developer, with at least 3 years in mobile development using React Native.
• Proven expertise in building and scaling mobile applications and backend systems in a services environment.
• Strong proficiency in Python or Node.js, AWS, and database technologies (SQL and NoSQL).
• Experience implementing CI/CD pipelines and automation tools.
• Deep knowledge of software engineering best practices, including clean code principles and test-driven development.
• Familiarity with AI copilots and a willingness to incorporate AI-driven tools into workflows.
• Excellent communication and collaboration skills, with the ability to inspire and influence teammates.
• Demonstrated growth mindset, passion for learning, and a commitment to excellence.
• A perfectionist attitude with an eye for detail and a drive to deliver outstanding results.
• Prior experience working with a services company is a must.

Benefits

• Creative Freedom: A culture that empowers you to innovate and take bold product decisions for client projects.
• Comprehensive Healthcare: Extensive health coverage for you and your family.
• Tailored Growth Plans: Personalized professional development programs to help you achieve your career aspirations.

About the Role

• We’re hiring a Principal Android Engineer to be the mini-CTO for Android at Zobaze POS. You’ll own the architecture, shared business logic, Kotlin Multiplatform (KMP) layer, and technical health of a mobile-first POS app used by hundreds of thousands of merchants globally.
• You’ll work with the founder for business direction—but system design, trade-offs, and technical decisions are yours. Your job: keep us fast and sane while protecting the platform from shortcuts and leading high-impact refactors.
• Zobaze POS is business-critical software used daily by retailers and food outlets for billing, inventory, staff management, and reporting—optimized for low-end devices, flaky networks, and real-world chaos.

What You’ll Own

• Android architecture end-to-end: Modules, patterns, KMP integration, state management, threading, error handling
• KMP strategy: Lead shared code architecture for cross-platform business logic; decide migration paths and avoid technical debt
• System design for harsh conditions: Offline-first, multi-device sync, graceful degradation under poor networks and low-spec hardware
• Full delivery lifecycle: Design → Build → Ship → Debug → Refactor key initiatives
• Refactors & modernization: Lead V1 → V2 rebuilds, module splits, and major migrations without breaking production
• Code detective & RCA owner: Drop into any codebase section, understand it fast, fix what’s broken, prevent recurrence
• Mentorship: Guide junior/mid-level developers and raise the team’s technical bar

Must-Have Skills

• 6–8 years Android dev (4+ years in fast-moving product companies, startups preferred)
• Strong in Kotlin, modern Android APIs, multi-module architectures
• 1–2 years Jetpack Compose in production (not toy projects)
• Large-scale refactor experience: V1 → V2, architecture rewrites, migrations—you handled risk and rollout
• Deep knowledge: MVVM, clean architecture, DI (Hilt/Dagger2), offline handling, sync strategies, coroutines, performance tuning
• Firebase comfort: Firestore, Functions, Auth, Messaging, Analytics, Crashlytics
• Elite debugging: Track down flaky production issues and design systemic fixes
• Code-reading detective: Navigate unfamiliar code and make safe, surgical changes
• Ownership mentality: High-expectation, low-handholding environment

Bonus Points

• POS/retail/operational systems experience
• Hands-on KMP in production (not toy projects)
• Hardware integrations (Bluetooth printers, scanners, cash drawers)
• Analytics tools (Amplitude, Intercom)
• Leading technical decisions in small, high-performance team

How You Use AI

• Proficient with Cursor, Copilot, Claude CLI, etc.
• Use AI as a high-context pair programmer for boilerplate, edge cases, refactor reasoning
• You don’t rely on AI to think for you—architectural understanding and judgment are yours
• Over-reliance without deep understanding is a red flag

Why Join

• Zero red tape: Build, ship, iterate—no committees
• Real impact: Your decisions affect thousands of small businesses daily
• Founder proximity: Influence product direction, protect the platform long-term
• AI-native team: Tooling and workflows that amplify great engineers
• High bar, supportive culture: Compete against mediocre software, not each other

Compensation

• Competitive salary based on capability and leverage created
• ESOPs for long-term owners
• Learning budgets, hardware, AI tooling access
• Health insurance for you & family
• Office perks (lunch, Zobaze Mix, fitness, etc.)

You’re a Fit If

• You see yourself as a mini-CTO for Android, not “just” an app developer
• You’ve built and broken real systems, then fixed them properly
• You want autonomy with accountability
• You care equally about quality, speed, and customer outcomes
• You’re excited about KMP and architecture
• You’re based in Hyderabad (or ready to relocate)

Do Your Thng 

https://doyourthng.com/ 

About us:

DYT - Do Your Thing, is an app, where all social media users can share brands they love with their followers and earn money while doing so! We believe everyone is an influencer. Our aim is to democratise social media and allow people to be rewarded for the content they post. How does DYT help you? It accelerates your career through collaboration opportunities with top brands and gives you access to a community full of experts in the influencer space. 

Role : Android Developer

RESPONSIBILITIES 

• Design components by translating product requirements, break down projects into tasks, and provide accurate estimates. Build scalable and reliable technology solutions at a rapid pace
• Work on native Android as well as Angular tech stack while keeping performance goals in mind
• Independently come up with different solutions, extensible Low-level design. Write modular, extensible, readable, and performant code
• Strong unit test and debugging skills 
• Proficient understanding of code versioning tools (git) 
• Excellent interpersonal, leadership, influence, and communication skills 
• Build, develop, mentor, and coach junior team members 

QUALIFICATIONS 

• Must have Working Experience in a product-based organization for at least 18 months.
• At least 2+ years experience and hands-on with mobile technologies
• At least one product build and publish 
• Work well under pressure and meet deadlines without sacrificing quality 
• Work with distributed development teams 
• Ability to resolve problems with support and must understand the mobile ecosystem and its limitations.
• Understand Android Architecture components, strong fundamentals in Android technologies, and aware of new Android changes

SKILLS  REQUIRED 

• Experience with kotlin is a must
• Knowledge of mvvm architecture/ android architecture components
• Knowledge of Rxjava and coroutines for multithreading
• Knowledge of retrofit/okhttp for making HTTP calls
• Knowledge of dependency injection using dagger2
• Knowledge of android framework components like services, fragments, intent services
• Knowledge of sql required 
• Experience in offline data management
• Write well designed, testable, efficient code 

WE EXPECT YOU TO WIN:Everyone at chargeMOD is given the tools and resources they need to succeed at their job. We offer a flexible and positive work environment so you have the autonomy to build amazing software for our customers and add to our team of industry leading visionaries. You will build a compelling and easy to use interface, ensure its maintainability and ease of use, and suggest ways to improve the look and feel of the application. We are lean, which means we reflect on what we learn and use that new knowledge to quickly make better products. Your job is to keep learning, contribute your knowledge back to the rest of the team, and apply what you learn to make chargeMOD and our clients even greater.

YOUR OPPORTUNITY:

chargeMOD’s engineering team is looking for an Android Developer to join our growing team. You are highly motivated, collaborative, and technical, with the passion to help shape the delivery of software products for our customers. You are passionate about web development and interested in helping to shape the future of our web services team.You are always seeking new and diverse challenges to grow your skill set and broaden your experience.

WHAT YOU WILL DO:

• You will join development on a mobile SDK, in use by tens of thousands of users around Pan India.
• You will join the weekly team meetings with the client and communicate progress to the client, as well as work closely with our development team in Slack/Gmeet.
• You will be responsible for development, do a portion of the testing, and be responsible for the release of the application

RESPONSIBILITIES: As a developer, you are responsible for delivering valuable software to your clients while adhering to technical standards, company values, and industry best practices. Your success in this position will require you to set and meet appropriate expectations with customers and delight customers by anticipating their needs. You will be accountable for meeting commitments and producing quality, tested software. High output, driven developer, able to work in a team setting.
Here are some tools we use in our Android development process:

• Slack
• Atlassian Tools (Jira, Confluence, etc)
• Android Studio
• Jenkins
• Github

YOUR QUALIFICATIONS:

• You have ability to write and test SDKs for use by other developers
• Here are some of the skills we expect you to possess:
  • Java and Kotlin
  • Client and team communication
  • Material design
  • Action bar/toolbar
  • Support libraries/Android X/Jetpack
  • Understanding of the activity and fragment lifecycle
  • Efficient layout design
  • Resource/asset management
  • Multi-threading, background processing
  • Networking
  • Functional / UI Testing (Espresso)

WE CONSIDER IT A PLUS IF YOU HAVE EXPERIENCE WITH:

• Significant UI experience (one of the primary SDKs is UI-related – so although you will not be developing a user interface for the application, knowledge on UI is important)
• Significant push notification experience (one of the primary SDKs is push-notification related)

Tatsam is a stealth mode, venture-backed mental healthcare company based in India.
We're redesigning mental health and wellness experiences for the modern day working professional, have raised angel round from top-tier investors, and signed some of the largest Indian enterprises and startups for the upcoming private beta launch… and we’re just getting started.

The startup is led by a team of CXOs who are serial entrepreneurs (YC alumni, IIT alumni, CXO in large enterprises). They are supported by a team of behavioral design experts, clinicians and counsellors with vast experience, and technologists on a mission to improve mental health and wellbeing for the modern day working professional.

RESPONSIBILITIES:

• Developing app using Flutter for both Android & iOS platforms.
• Writing quality code independently that is simple, reliable, and scalable.
• Evaluating and implementing out-of-the-box ideas for application development.
• Working with the team to manage, optimize, and customize multiple applications.
• Detecting and troubleshooting application issues.

REQUIREMENTS:

• Must have 2+ years of experience in native mobile development (Android / iOS).
• Must have 1+ years of experience in Flutter.Should have worked and successfully deployed apps using Flutter framework.
• Good knowledge of Flutter SDK & Dart programming language.
• Should have worked on mobile platforms like Android or iOS.
• Should have developed & worked with Flutter widgets for iOS & AndroidExperience with any of the state management solutions like Bloc, Provider, Mobx, etc.
• Mobile app architecture design and optimization.Extreme attention to detail and the ability to match the design as closely as possible.
• Ability to work closely with Product Managers, other development team members.
• Understanding of Functional Reactive Programming is a must.
• Comfortable with Test-Driven Development.

The Opportunity
You will enter a close group of exceptionally talented people who in the last 2-months have secured incredible investors, partners, clients and advocates. We will continue this momentum till our vision of being able to provide good mental health and wellbeing avenues for the modern day professionals is achieved. If we like each other and agree to partner in this journey, this has the potential of resulting in a compounded career and mental growth for you.

Mandatory: Hands on experience working with Swift 3 , Swift 4. Very strong logical skills. Good hold on operating system concepts and data structure. Experience with web services , core-data , camera kit , image caching concepts, keychain , past experience working with one of the design patterns like MVC / MVVM / Viper , network check.

Good to have: Rx-Swift experience , video / image filter experience , media player usage , complex UX effects , couch-db , RealM.Knowledge of GIT management , Continuous Integration and Continuous Development practices.