Senior Full Stack Developer (Part time)

Senior Full Stack Developer (MERN + Flutter / React Native)- Part Time

Please read the JD properly before applying!

P.S. : This role is not suitable for someone with less than 4 years of experience.

Engagement Details

Type : Part-Time / Freelance (Transition to Full-Time Core Team Role)

Phase 1 : Milestone-based engagement

Phase 2 : Full-time Core Team position with performance-based compensation and equity allocation

Work Mode (For Phase 1) : Remote, flexible hours

We’re building something extraordinary — a next-generation

digital commerce and rewards platform

into a seamless experience. If you’re an experienced builder who wants to

own , not just code,

and architect the vision

— this is your moment to be part of the founding story.

Your Role

You’ll help build the backend architecture, frontend systems, mobile apps, and integrations — collaborating directly with the founder to bring this project from 0 → 1.

This is a Phase 1 milestone-based engagement that transitions into a full-time core founding role with equity for the right candidate.

Key Responsibilities

Architect, develop, test, and deploy a complete e-commerce + rewards ecosystem (Backend + Admin + App) using MERN Stack and Flutter / React Native

Develop Admin, Vendor, and User Panels with role-based access control

Manage API integrations (payments, wallets, affiliate SDKs, game APIs, etc.)

Own DevOps, CI / CD pipelines, and cloud infrastructure (AWS / GCP)

Ensure security, scalability, and modularity from Day 1

Collaborate with the founder on product architecture, sprints, and roadmap decisions

Build and integrate :

Wallets & redemption systems

Reward & affiliate engines (postback / S2S integrations with networks like CashKaro, GrabOn, etc.)

Ad & gaming modules (banner / video / survey APIs)

Notifications, analytics, and fraud detection layers

Required Skills & Experience

✅ MERN Stack Expertise – 5+ years of hands-on experience with MongoDB, Express, React, and Node.js

✅ E-commerce / Marketplace Systems – Proven record in building end-to-end platforms

✅ Reward / Affiliate Systems – Deep understanding of postback, cashback, or gamification integrations

✅ Cloud & DevOps – AWS / GCP setup, CI / CD pipeline management, containerization (Docker / Kubernetes)

✅ Security & Data Handling – Role-based access, JWT, encryption, fraud detection

✅ Mobile-first Development – Experience integrating Flutter or React Native apps

✅ Ownership Mindset – Strategic thinker with the ability to build fast, adapt fast, and ship clean

Ideal Tech Stack

Frontend / Mobile

Flutter (preferred) or React Native – cross-platform app (Android + iOS)

Next.js / React.js – for Admin, Vendor, and Web Panels

Deep understanding of responsive UI, modular components, and API integration

Backend / APIs

Node.js (Express / NestJS)

or

Django / FastAPI (Python)

RESTful & WebSocket APIs, with a strong understanding of

microservices

Integration with 3rd-party APIs (Affiliate, Ad SDKs, Payment, Game APIs, etc.)

GraphQL (bonus)

Database & Storage

PostgreSQL / MySQL (core)

MongoDB / Redis for caching and logs

S3 / Cloud Storage for media

Infra & DevOps

AWS / GCP / Azure

Docker / Kubernetes

CI / CD : GitHub Actions / Jenkins

Monitoring : Prometheus / Grafana / CloudWatch

Important to Have

Experience in Reward Apps / Affiliate Platforms / Gaming / AdTech / FinTech

Worked with multi-tenant vendor systems

Knowledge of data pipelines and BI dashboards

Familiarity with AI personalization (TensorFlow Lite / OpenAI APIs)

Entrepreneurial mindset with a bias for speed, clarity, and ownership

How to Apply

Send your application to arc@hillqueentea.com

Subject Line :

“Full Stack Developer (Core Team)– [Your Name]”

Include :

Links to live projects (especially in e-commerce, reward, or affiliate domains)

Describe your experience with affiliate, reward, or gamification-based systems

Share your approach to system architecture and tech stack decisions

Are you open to joining as a core founding member with a milestone-based structure?

Describe your experience with cloud deployments (AWS / GCP) and DevOps workflows.

What excites you about working on an early-stage project with milestone-based compensation?

How many hours can you dedicate to this project?