lynnoMake the journey clear.
Shape user flows and screen layouts around the tasks people need to complete.
INDEPENDENT SOFTWARE DEVELOPMENT TEAM
Good ideas deserve
software that works.
We design and build native Android and iOS apps, business tools, and cloud services that work together. Thoughtfully engineered. Built for the real world.
Let’s build your next product ↗BASED IN TAMIL NADU, INDIAMEET OUR FLAGSHIP PROJECT ↓
01 / SELECTED WORK In active development
One platform.
A world of connections.
Meet Doora. Our ongoing journey to bring local commerce, business operations, and delivery together.
Inside the Doora project ↗
YOUR DOORSTEP ASSISTANT
DOORATEAMS / IN-STORE WORKFLOWSFrom the table
From the table
to the kitchen.
DooraTeams supports the people running day-to-day service. Staff can browse the menu, add items to a table, and prepare an order for the kitchen.
This actual demo home screen brings restaurant status, online order stages, and dine-in orders into one overview.
ACTUAL APP SCREENSHOTS · DEVELOPMENT & DEMO SCREENS · SELECT A SCREEN TO VIEW FULL SIZE
2.5 yearsOf continuous development
One dedicated teamAcross apps, backend, and cloud
Connected by designFrom customer to operations
THE DOORA STORY
Beyond an app.
An entire workflow.
An order is only the beginning.
Products need to be available. Teams need to coordinate. Drivers need the right information. Operations need a clear view. Our work on Doora connects these moving parts through focused applications and shared backend services.
THE CUSTOMER EXPERIENCELocal commerce,
Local commerce,
within reach.
Food, retail, and DooraMart ordering with product selection, carts, checkout, scheduled orders, and order history.
02 / WHAT WE DO
From first idea
to what’s next.
One focused requirement or a connected product: we bring hands-on development experience to the work you need done.
01UI/UX design & design systems
+
We use Figma to shape app experiences, from user flows and screen layouts to reusable interface components. Our design-system experience connects visual decisions with implementation across native apps.
02Native mobile applications
+
Native Android with Kotlin and Jetpack Compose. Native iOS with Swift and SwiftUI. We build interfaces and integrations for each platform, with Kotlin Multiplatform supporting shared business logic where it fits.
03Backend & integrations
+
APIs and business logic that keep users, products, orders, and payments connected. We build the services behind your application and integrate with the systems you use.
04Database design & engineering
+
SQL and NoSQL experience with PostgreSQL and Cloud Firestore. We design data models, implement transactional workflows, and connect databases to the applications and services that use them.
05Business & operations tools
+
Practical interfaces for managing products, stock, orders, staff, approvals, and support. Built around the workflows your team follows every day, including desktop management applications.
06Cloud & Firebase
+
Google Cloud backend deployment and Firebase integration for application data and notifications. We help set up environments and maintain the services your product depends on.
07Ongoing product development
+
Software keeps evolving. We investigate bugs, extend features, improve interfaces, and support testing and release preparation for the next version.
08Analytics & business intelligence
+
Understand how your product is used and how your business is performing. We bring together event tracking, SQL analysis, and Looker dashboards to make data useful for product and operations teams.
09Testing & quality assurance
+
Build confidence in important workflows with automated tests, integration checks, and app release validation. Our Doora experience spans business logic, Android navigation, backend services, and Firestore emulator tests.
10CI/CD & deployment
+
Take software from source code to a controlled release. We work with Cloud Build, Docker, and Cloud Run for backend delivery, alongside Android and iOS app store releases and Windows and macOS desktop packaging.
11Application security & access control
+
Connect user identity, app verification, and authorization across mobile apps and backend services. Our experience includes Firebase Authentication, App Check integration, and server-side role and business access checks.
DESIGN THAT CARRIES THROUGH TO THE APP
Thoughtful experiences.
A consistent system.
We bring UI/UX design, Figma experience, and app development together. The goal is a product that feels coherent as screens, features, and platforms grow.
Design with a shared language.
Use Figma to communicate interface ideas, refine layouts, and organize reusable design components.
Build consistency in.
Define colours, typography, spacing, sizing, and corner radii alongside reusable app components.
Carry the details into code.
Apply shared design foundations through native UI components and platform-appropriate interactions.
In practice: Doora. Our app code includes shared design properties and reusable Compose components, alongside iOS design-system foundations for colours, fonts, sizing, and text fields.
ANALYTICS & BUSINESS INTELLIGENCE
From product activity
to clearer decisions.
We work with product analytics, BigQuery, and Looker to help teams understand usage, explore business data, and communicate performance through useful reports.
PRODUCT ANALYTICSUnderstand the journey.
Instrument application events and relevant properties to understand how people use features and move through important workflows.
DATA ANALYSISTurn data into answers.
Use SQL and BigQuery to explore data, define reporting metrics, and prepare datasets for business and operational analysis.
BUSINESS INTELLIGENCEMake performance visible.
Bring metrics together in Looker dashboards and reports, with clear visualizations shaped around the questions your team needs to answer.
Built into the product journey. Doora includes Firebase Analytics event logging and user-property support. Our analytics experience complements the application, database, and cloud work behind the platform.
Discuss your reporting needs ↗03 / OUR TOOLKIT
Native expertise.
Connected foundations.
Native Android and iOS development is at the heart of our work. Doora brings that expertise together with shared logic, web and desktop applications, and cloud backend services.
NATIVE ANDROID
Android · Kotlin
Native Android apps built with Kotlin and Jetpack Compose, from customer experiences to business and delivery workflows.
- Interface design: reusable Compose components, navigation, and consistent app design systems.
- App architecture: ViewModels, UI state, and shared business logic where appropriate.
- Connected experiences: backend APIs, Firebase, notifications, maps, and payment integration.
- Delivery: device testing, debugging, and Google Play release preparation.
Applied across Doora’s customer, business, team, driver, and operations apps.
NATIVE iOS
Swift · SwiftUI
Native iOS apps built with Swift and SwiftUI, with interfaces and interactions shaped for Apple platforms.
- Interface design: reusable SwiftUI views, navigation flows, and consistent design foundations.
- App architecture: ViewModels, state-driven screens, and integration with shared business logic.
- Platform integration: MapKit, location services, notifications, Firebase, and payment checkout.
- Product workflows: ordering, delivery tracking, account management, and release preparation.
Applied in Doora’s native iOS customer experience.
SUPPORTING THE COMPLETE PRODUCT
Figma
UI/UX design and reusable interface components
Kotlin Multiplatform
Shared business logic across platforms
React · Kotlin/JS
Web applications with Kotlin React
Compose Desktop
Windows and macOS business and operations tools
Kotlin · Ktor
Backend services and APIs
Google Cloud · Cloud Run
Cloud infrastructure and service hosting
Docker · Cloud Build
Automated builds and container packaging
Cloud Firestore
Document data and real-time synchronization
Firebase Authentication
User sign-in and account integration
Firebase App Check
App attestation and request verification
Firebase Cloud Messaging
Push notifications across applications
Google Maps · MapKit
Maps and location experiences
Razorpay
Payment checkout integration
Google Pub/Sub
Event messaging between backend services
Cloud Scheduler
Scheduled backend jobs and workflows
PostgreSQL
Relational data and transactional workflows
Cloud SQL
Managed PostgreSQL infrastructure
Cloud Storage
Product images and application media
Secret Manager
Managed application secrets and configuration
Artifact Registry
Container image storage for deployments
Looker
Business dashboards and data visualization
BigQuery
SQL analysis and reporting datasets
Firebase Analytics
Application events and product analytics
Git
Version control and branching
GitHub
Pull requests, code review, and collaboration
GitHub Actions
Automated checks, builds, and release workflows
GitHub Copilot
Supporting AI-assisted development with engineering review
DATABASE DESIGN & ENGINEERING
SQL. NoSQL.
The right data foundation.
Our work on Doora spans PostgreSQL and Cloud Firestore. We design around how data is related, read, updated, and shared across applications—choosing the database approach to fit the workflow.
SQL / RELATIONAL DATA
PostgreSQL
Structured data, clear relationships, and transactional updates for business applications.
- Relational modelling: tables, relationships, and foreign keys that reflect business rules.
- Transactional operations: coordinated database changes for consistent application workflows.
- Flexible data structures: relational fields alongside JSONB where the model calls for it.
- Backend integration: Kotlin data-access layers with Exposed, deployed with managed PostgreSQL on Cloud SQL.
IN DOORA
Product catalogues, collections, categories, and deals use relational models, including references between tables and JSONB fields.
NoSQL / DOCUMENT DATA
Cloud Firestore
Document-based data and real-time application updates across connected experiences.
- Document modelling: collections and documents organized around application access patterns.
- Consistent writes: transactions and batched updates for related changes.
- Queries and access: composite indexes, scoped reads, and security rules that support the application’s roles.
- Connected workflows: real-time data flows and backend-managed updates across apps.
IN DOORA
Cart updates, business-team assignments, and operational workflows use Firestore transactions and batched writes.
Two database models.
One considered architecture.
We work across SQL and NoSQL systems, defining which service owns each write and how other applications receive updates. Doora gives us practical experience connecting PostgreSQL, Firestore, backend APIs, and Pub/Sub events.
APPLICATION SECURITY & ACCESS CONTROL
Clear identity.
Considered access.
We design access around three questions: who is using the product, whether requests come from an expected app, and what that user is allowed to do. Each layer has a distinct role in the architecture.
USER IDENTITYFirebase Authentication
Integrate sign-in and account flows with backend ID-token verification. Use verified identity and account status as the foundation for protected application requests.
APP VERIFICATIONFirebase App Check
Integrate app attestation and backend token verification, validate release builds, and monitor results to prepare a staged enforcement rollout.
AUTHORIZATIONRole-based access
Enforce permissions in backend services using verified roles, account status, and business or regional assignments. Scope access to the work each user is responsible for.
In practice: Doora. Our work includes Firebase ID-token verification, App Check integration across five Android apps with backend verification and monitoring, and role-based authorization for operations and business workflows.
Discuss your access requirements ↗TESTING & QUALITY ASSURANCE
Test the details.
Prepare with confidence.
Connected products need checks at more than one layer. We combine focused automated tests with workflow validation to catch regressions as applications and services evolve.
Protect the rules.
Unit and regression tests for carts, currency calculations, checkout rounding, scheduling, and driver eligibility.
Check the journey.
Android instrumentation tests for notification deep links, navigation, repeated actions, and app startup scenarios.
Verify connected changes.
Backend and Firestore emulator tests for assignments, lifecycle changes, validation, and related data updates.
Prepare to ship.
Release tooling checks and internal testing builds support validation before an application update reaches users.
In practice: Doora. Our repositories include Kotlin/JUnit tests, Android instrumented tests, Firestore emulator integration tests, and Python tests for release tooling. We choose checks around the workflows and risks that matter to each product.
CI/CD & DEPLOYMENT
Built to ship.
Prepared to evolve.
Our work extends beyond application code. We connect automated builds, container delivery, release checks, and mobile and desktop release preparation so teams can maintain a repeatable path to each release.
BUILD AUTOMATIONCloud Build & CI/CD
Define repeatable build steps, connect validation to release workflows, and produce versioned artifacts for deployment.
CLOUD DEPLOYMENTDocker & Cloud Run
Package backend services as Docker images, manage images in Artifact Registry, and deploy Cloud Run revisions with readiness checks and controlled traffic changes.
App & desktop releases
Prepare Android and iOS store releases alongside Windows and macOS desktop packages. Our work covers build versioning, signing configuration, testing builds, release notes, and Windows MSI/EXE and macOS DMG packaging with Compose Desktop.
Git, GitHub & GitHub Actions
We use Git and GitHub to manage changes, collaborate through branches and pull requests, and review code. GitHub Actions supports automated checks, builds, and release workflows alongside our cloud deployment tools.
AI-assisted development
We use tools such as GitHub Copilot to assist coding, refactoring, documentation, and test preparation. Our engineers review and validate the results, with ownership of architecture, security, and quality.
In practice: Doora. Our delivery workflows include Cloud Build configurations, Dockerized backend services, Cloud Run rollouts, and Android release tooling. Build and deployment checks help us validate changes before moving to the next release stage.
Discuss your deployment workflow ↗04 / THE PEOPLE BEHIND THE PRODUCT
Small team.
Shared ownership.
Real product experience.
Get to know us ↗LYNNO↗
Lynno Technologies is a focused software development team based in Tamil Nadu, India.
Over 2.5 years of developing Doora, we’ve worked across mobile applications, business tools, backend services, and cloud infrastructure. We bring that practical experience to every new project.
FOUNDER & TECHNICAL LEADERSHIP
Experienced leadership.
Hands-on perspective.
Founder & Principal Software Architect
Lynno Technologies is led by a Founder and Principal Software Architect with more than 20 years of software development and architecture experience, including work for US clients and 13 years working in the United States.
That experience informs our approach to application architecture, technical decisions, and product delivery—from native mobile experiences to the backend services that connect them.
Let’s talk about your product ↗EXPERIENCE BEHIND THE WORK
20+
Years in software development
and architecture
13
The founder’s career experience; the 13 US-based years are included in the 20+ year total.Years working in
the United States
05 / HOW WE WORK
A clear path, together.
Understand the work.
Your users, requirements, and constraints come first.
Make the scope clear.
Agree on priorities, deliverables, and the first release.
Build. Review. Refine.
Develop in stages, test important journeys, and incorporate feedback.
Keep moving forward.
Prepare releases and support agreed improvements over time.
LET’S MAKE SOMETHING USEFUL
What are you
building next?
A new idea. An existing product. A workflow that needs to work better. Tell us about it.
mail@lynnotech.com ↗