Senior Software Engineer - Data Science

What this role is

The market has no shortage of mobile developers who only do mobile, and no shortage of full-stack engineers who have never shipped a production app. This role is neither of those.

You are a Product Engineer whose centre of gravity is mobile. React Native is where you live. You have shipped apps, debugged native integrations, handled platform-specific edge cases, and understand what it actually takes to get something through App Store and Play Store review. That is the non-negotiable foundation.

But at Fountane, Product Engineers build products — not layers. The same feature that lives in a mobile app often has a web surface, an API, a webhook, or a database schema behind it. At L3 you are expected to own the full application surface of what you are building, not hand off the moment the work touches a backend. You will not be doing everything alone — you have a pod. But you will need to be capable of crossing the boundary when the work demands it.

You are joining a permanent Island pod. Your first deployment is to an ongoing client engagement that requires your mobile depth immediately. After that, you are a long-term Islander who will move across engagements as the Mainland deploys you.

What Fountane is actually asking for

We know the market has specialists. We are not pretending this is a standard full-stack role with mobile as a footnote, or a mobile role where full-stack is irrelevant. Mobile is your primary skill. Everything else is your secondary obligation. If you have spent your career going deep on React Native and can hold your own on an API or a web feature when needed, this role fits you.

If you are a pure mobile specialist who cannot — or will not — touch anything outside the app layer, this is not the right fit. Not because we do not respect specialisation, but because Islands do not have room for hard walls between disciplines. The work crosses boundaries. So must you.

What you will own at L3

• React Native application development — the primary mobile codebase, feature delivery, and platform-specific implementation across iOS and Android
• App Store and Play Store release management — build pipelines, submission, review compliance, and versioning
• Native integrations — push notifications, device permissions, biometrics, deep linking, offline-first patterns, and platform SDK integrations where required
• Context Engineering — translating Concept Engineer prototypes and briefs into a clean, scalable mobile architecture using Cursor as your primary execution tool
• API integration and backend contribution — consuming and, where needed, building or modifying the backend services your mobile surfaces depend on
• State management architecture — owning how data flows through the mobile application, not just implementing patterns handed to you
• Cross-platform consistency — ensuring iOS and Android behaviour is intentional and documented, not accidental
• Cursor .cursorrules contribution — maintaining the Island's mobile-specific coding standards and context files so the codebase stays navigable as it grows
• Refactoring and codebase stabilisation — at L3 you are expected to work safely on an existing codebase, not just greenfield. You use Cursor's codebase context to edit and optimise without breaking what already works
• Mentoring L1 and L2 engineers on the Island — reviewing their code, raising the quality bar, and making sure mobile-specific patterns are being applied correctly across the pod

The technology you will be working with

This role is being hired for a specific active engagement. The following is the technology stack in use on this project. If you have not worked with these directly, do not apply.

• React Native — cross-platform mobile, iOS and Android
• TypeScript and JavaScript (ES6+) — the entire codebase is typed
• State management — Zustand and Redux; you need to know both and have an opinion on when to use each
• API integration — RESTful APIs and GraphQL; you will be consuming both
• Push notifications — Firebase Cloud Messaging (FCM) and Amazon SNS
• List rendering and UI performance — FlatList and related React Native optimisation patterns; this is not optional on a project of this scale
• Git — branching, PR reviews, and version control discipline on a team codebase
• iOS and Android platform guidelines — you understand the design and behavioural expectations of both platforms and implement accordingly

Bonus — useful but not required to apply:

• Native Android (Kotlin/Java) or iOS (Swift/Objective-C) experience
• Mobile testing frameworks — Jest, Detox, React Native Testing Library
• CI/CD pipeline experience for mobile applications
• Performance monitoring and analytics tooling

Proof-based qualifications

We do not assess candidates on years of experience or job titles. We assess on proof of capability. When you apply, be prepared to demonstrate the following:

What we look at

What you must show

2–3 shipped apps

Live applications on the App Store and/or Play Store that you built or were a primary engineer on. Provide links or app names in your application. We will look them up. If you cannot name two shipped apps, do not apply.

React Native + TypeScript

A codebase or feature set demonstrating typed React Native development — components, hooks, context API, and state management using Zustand or Redux. Not a tutorial project.

API and backend integration

A feature where your React Native work connected to a RESTful or GraphQL API — ideally one you also built or modified on the backend side. Show us the integration, not just the consumption.

Cursor-driven workflow

Walk us through how you currently use Cursor and Claude in your build process. Not a demo. A real conversation about how AI tooling has changed how you write and debug code.

A CV listing React Native and a GitHub with no shipped apps is not proof. Show us what you have built.

AI tooling at Fountane

Claude and Cursor are the primary tools for thinking, drafting, and executing work at Fountane. Every Product Engineer — including this one — is expected to use Cursor as their main development environment and Claude for context engineering, debugging, and architectural thinking.

This is not a listed skill. It is the working method. If you are not already building with Cursor and Claude integrated into your daily workflow, you will need to get there fast. The Island's velocity depends on it.

Who should not apply

• You have only built mobile apps backed entirely by third-party services (Firebase, Supabase) and have never touched application logic outside the app layer.
• You cannot name two or more applications you have shipped to the App Store or Play Store.
• You treat mobile as a skin over a web app. You have not handled platform-specific native behaviour, device APIs, or cross-platform edge cases.
• You are not using AI tooling in your current workflow and see it as optional.
• You need a clear boundary around mobile and expect the backend work to always belong to someone else.

What comes next

L3 is not a ceiling. The path to Lead PE — Mobile requires demonstrated ability to orchestrate the Island's full application architecture across mobile and backend, define the .cursorrules for the pod, manage Island velocity, and handle client technical conversations without the Lead CE in the room. Promotion is not tenure-based. It is triggered by demonstrated capability at the next level's complexity tier.

About Fountane

Fountane is a technology ventures lab - one part product studio, one part startup engine. We build high-quality software and AI products for clients ranging from fast-moving startups to large enterprises, and we co-build and invest in new companies when we see the right opportunity.

Founded in 2017 and headquartered in Minneapolis, we have grown to 60+ people across four continents and were recognised as one of America’s fastest-growing companies, ranking No. 699 on the Inc. 5000 with 595% three-year growth.

We are radically open-minded, serious about craft, and direct about expectations. If you want to do meaningful work without politics, this is the place.

Role: MERN Stack Developer

Location: Andheri East, Mumbai

Experience: 2+ years

Role Overview

We're hiring a MERN Stack Developer to build and maintain scalable web applications.

Key Responsibilities

• Develop full-stack applications using MongoDB, Express.js, React.js, and Node.js
• Build RESTful APIs and integrate third-party services
• Write clean, efficient code and participate in code reviews
• Optimize applications for performance and scalability

Required Skills

• 2+ years experience with MERN stack
• Strong proficiency in JavaScript/ES6+, React.js, Node.js, Express.js, and MongoDB
• Experience with Git, RESTful APIs, and authentication mechanisms
• Knowledge of HTML5, CSS3, and responsive design

Good to Have

• TypeScript, Redux, Next.js
• Cloud platforms (AWS/Azure)
• Testing frameworks (Jest, Mocha)

Job Description

Role: Java Developer

Location: PAN India

Experience:4+ Years

Required Skills -

1. 3+ years Java development experience
2. Spring Boot framework expertise (MANDATORY)
3. Microservices architecture design & implementation (MANDATORY)
4. Hibernate/JPA for database operations (MANDATORY)
5. RESTful API development (MANDATORY)
6. Database design and optimization (MANDATORY)
7. Container technologies (Docker/Kubernetes)
8. Cloud platforms experience (AWS/Azure)
9. CI/CD pipeline implementation
10. Code review and quality assurance
11. Problem-solving and debugging skills
12. Agile/Scrum methodology
13. Version control systems (Git)

Full Stack Developer – React + Node.js + SQL + Team Lead + Excellent comms

Job Title: Full Stack Developer (React + Node.js + SQL)

Experience: 7+ years

Job Summary:

We are seeking a highly capable full stack developer proficient in React, Node.js, and SQL. The ideal candidate will be responsible for developing scalable web applications and APIs, integrating with relational databases, and delivering high-quality, maintainable code.

Key Responsibilities:

• Design and develop front-end interfaces using React with Redux/Context API.
• Build RESTful APIs and backend services using Node.js (Express.js).
• Integrate and optimize SQL queries with PostgreSQL, MySQL, or MS SQL Server.
• Ensure responsive design and cross-browser compatibility.
• Collaborate with UI/UX designers, testers, and backend engineers.
• Write unit and integration tests to ensure code quality and reliability.

Required Skills:

• Strong hands-on experience with React.js and Node.js.
• Proficiency in SQL and experience with relational database systems.
• Knowledge of RESTful API design and microservices architecture.
• Familiarity with version control systems (Git), CI/CD pipelines.
• Strong understanding of HTML, CSS, and JavaScript (ES6+).

Good to Have:

• Experience with GraphQL, TypeScript, or NoSQL databases.
• Cloud deployment experience (AWS/Azure).
• Containerization knowledge (Docker/Kubernetes).
• Agile/Scrum project methodology experience.

Cygner Technolabs Pvt. Ltd. is a dynamic and innovative IT company dedicated to delivering cutting-edge solutions to our clients worldwide. We are seeking a talented and experienced PHP Developer to join our growing team.

Roles & Responsibilities:

·      Develop and maintain PHP based web applications.

·      Collaborate with cross-functional teams to define, design, and implement new features.

·      Maintain and enhance existing web applications.

·      Troubleshoot, debug, and optimize code to ensure optimal performance.

·      Stay updated on emerging industry trends and technologies.

Skills Required:

·      Proven experience as a PHP Developer or similar role.

·      Strong proficiency in PHP and MySQL.

·      Knowledge of front-end technologies such as HTML, CSS, and JavaScript.

·      Familiarity with version control systems (Git).

·      Understanding of database design and optimization.

·      Excellent problem-solving and communication skills.

·      Ability to work both independently and collaboratively in a team environment.

Required Experience: 1+ Year

Preferred Location: Rajkot

Educational Qualification: BE Computer Science, BE IT, B Tech Computer, M Tech Computer, MCA, BCA, M.Sc. IT, B.Sc. IT or a related field.

Senior Software Engineer -

Android We are looking for a self-starter who can also work closely with the team in a dynamic environment where priorities change based on continually evolving business needs and technology. You’ll be responsible for building mobile apps from conception to deployment and eventually take ownership of the mobile architecture, playing a pivotal role in mobile app development out of India.

Roles & Responsibilities-

• Translate designs and wireframes into high quality code. • Ensure the best possible performance, quality, and responsiveness of the application. • Help maintain code quality, organization, and automatization. • Write reusable and reliable code which works with various databases and APIs. • Work closely with key stakeholders to create great experiences that make it effortless to connect different apps together.

Skill set – • 3+ years of experience in developing Apps using Android SDK. • Proficiency in Kotlin APIs like coroutine, serialization, etc. • Strong Knowledge of Android UI design principles like material design standard. • Strong Knowledge in mobile design patterns like MVVM, MVP etc and best practices. • Comprehensive understanding of Android architecture components like navigation component, Livedata, hilt, Viewmodel etc. • Familiarity with cloud message APIs and push notifications. • Experience with unit testing, Automated UI testing and code coverage tools. • Experience in Continuous Integration, Continuous Delivery/ Deployment. • Experience with threading, and performance tuning. • Knowledge in working with Graphql backend is good to have. • Knowledge in working with Google play services and Android Security APIs. • Technical depth that allows you to rapidly fix bugs and solve problem.

What you’ll be doing:

• You’ll collaborate in perfect synergy with other designers and product managers on India’s top community safety app, and design in a fast-paced environment.
• You’ll understand the user experience strategy for a productand drive the overall design solutions based on usability, consistency, business goals, time to market and customer experience.
• You’ll create wireframes, storyboards, user flows and process flows to effectively communicate interaction and design ideas.
• You’ll apply user-focused design processes to create high quality user experiences on our app.

What you’ll bring to the team:

• You’ll bring an in-depth understanding of design patterns across web and mobile platforms.
• You’ll bring critical experience and skills in visual design, UX design, research, micro-interactions
• You’ll bring a demonstrated ability to be a self-starter who will drive progress.
• An expertise in Photoshop, Illustrator, Sketch, Invision, Pixate, Framer or other visual design and wire-framing tools.

Interview Process & Prep Notes:

Portfolio Review
Design Approach, Experience, Project overview. Be ready to deep dive and effectively articulate your experience in the UX Field by showing us your portfolio, showcasing past experience, sharing your understanding of design approach, design thinking and your wizardry with tools, processes or unique skill-sets.

Design Assignment
Solution Approach, Task Flows, Mind Maps, Prototyping, Visual skills. The moment is finally here where you walk the talk and demonstrate your ability in UX Designing by acing a short challenging assignment shared by our designers.

Team Fitment
Behavioural Assessment, Culture Fit, Project Knowledge, Role OperationBe yourself. It works out better for everyone if we are genuine and can see if we are a cultural fit for each other.
Everyone here is focused on our mission and hope we can align.