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Backend Developer (mobile app)
ELMA - Emotional Life Management AssistantDelhi, India2 days ago
Job descriptionFirebase (Firestore, Firebase Auth, Cloud Functions, Security Rules) Experience integrating backends with React Native mobile apps Experience working with sensitive user data (health / fintech / edtech) Architecting and implementing secure, scalable backend services Designing database schemas and business logic for logging, tracking, streaks, and achievements Implementing secure authentication & authorization flows Exposing clear REST APIs for our React Native frontend team Ensuring data security, privacy, and clean error handling Design and implement backend architecture using Node.js + Express / Nest + MongoDB Implement robust AuthN / AuthZ using JWT and role-based access control Build and document REST APIs for : user onboarding logging & retrieving metrics streaks, badges, and achievements other core modules as defined Design database schemas with scalability and analytics in mind Collaborate closely with the frontend team to integrate APIs smoothly Ensure data protection, validation, and secure access at all layers Set up logging, basic monitoring, and error-handling patterns You have 3+ years of strong backend experience (Node.js ecosystem) You have built and deployed production-ready backend systems (not just hobby apps) You are confident with : designing schemas writing secure APIs handling auth & roles debugging production issues You can explain your architecture decisions clearly You can join immediately (no long notice period / no parallel full-time job) Prior experience with Firebase (Firestore, Auth, Cloud Functions) Experience with mobile app backends (React Native, Flutter, etc.) Worked on apps involving user data privacy, mental health, health-tech, fintech, or ed-tech Comfortable working directly with founders in a fast-moving startup Initial engagement : short-term contract focused on delivering the MVP backend in ~3 weeks (full-time). Payment : fixed for the MVP phase (discussed privately), tied to successful delivery of agreed backend scope. On successful MVP delivery and mutual fit, you will be transitioned into a full-time role with a revised salary package and full ownership of the backend.
Hiring : Senior Backend Engineer (Immediate Joining – Contract → Full-Time)
Company : ELMA - India’s 1st Emotional Life Management Ai Assistant
Location : Remote (India-based, IST hours)
Engagement : Full-time, starting as a short contract → transitions to full-time role upon successful MVP delivery
Tech Stack (Core Requirement)
We are looking for a backend-first engineer who is very strong with :
- Node.js
- Express.js or Nest.js
- MongoDB
- REST API design (clean, versioned, documented)
- JWT-based Auth
- AuthN & AuthZ best practices (role-based access, permissions, secure sessions)
Nice-to-have (strong plus) :
Role Overview
You will be responsible for owning and building the backend of our MVP :
This is a hands-on role for someone who is comfortable taking full ownership and shipping fast.
Key Responsibilities
Required Experience
Please apply only if :
Bonus Points (Nice to Have)
Engagement Model & Timeline
How to ApplySend the
following to ydk@elma.ltd :
1. Updated CV / LinkedIn profile
2. GitHub / portfolio / links to apps or APIs you’ve built
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Mobile App Developer • Delhi, India
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