UAPP.AI

We are a product IT company building and scaling our own digital products for global markets.
We are looking for a Backend Developer to join our team and work on the development and maintenance of server-side logic, databases, and API integrations for subscription-based digital products.
The role involves building reliable backend infrastructure, implementing payment and subscription systems, and integrating third-party services.

Key Responsibilities:
API Development

• Design and develop RESTful or GraphQL APIs for communication between frontend interfaces and backend systems
• Build scalable and maintainable backend architecture
• Ensure high performance and reliability in high-traffic environments

Subscription & Billing Logic

• Develop server-side logic for subscription management
• Implement recurring billing workflows
• Manage subscription lifecycle using webhooks and event-driven logic
• Handle user authentication and access management

Payment Integrations

• Integrate payment gateway APIs (such as Stripe, PayPal)
• Configure and maintain webhooks for automated payment processing
• Build and maintain payment workflows and billing systems

Database Management

• Design and maintain databases storing user, payment, and subscription data
• Work with SQL databases such as PostgreSQL or MySQL
• Work with NoSQL databases such as MongoDB when required

Third-Party Integrations

• Integrate external services and APIs
• Work with CRM tools and other third-party platforms
• Maintain and improve reliability of integrations

Performance & Security

• Ensure data security and protection standards
• Optimize backend performance and scalability
• Maintain reliable systems under high traffic conditions

Required Skills and Qualifications:

• 3+ years of commercial backend development experience
• Strong proficiency in Python
• Experience building and maintaining RESTful APIs
• Strong understanding of API standards and backend architecture
• Experience working with payment APIs (Stripe, PayPal or similar)
• Experience working with SQL databases (PostgreSQL or MySQL)
• Understanding of webhooks and asynchronous workflows
• Experience designing scalable backend systems

Nice to Have:

• Experience working with subscription-based products
• Experience implementing recurring billing systems
• Experience with GraphQL
• Experience with Docker and containerized environments
• Experience working with cloud platforms (AWS, GCP or similar)
• Experience with message queues or event-driven architectures.

We offer:

• Competitive salary
• Remote
• Opportunities for professional growth and development
• A dynamic and fast-growing team environment
• The ability to make a real impact on the product and see tangible results.

UAPP.AI  is an AI-focused product IT company founded in 2018 that specializes in creating, launching, and monetizing mobile applications and web products with over 10 million combined installs for global markets. 

We create our own products & apps — design, build, monetise, and scale them to millions of users worldwide.

Responsibilities:

• Implementation the long-term vision and strategy of the product and roadmap for web-based subscription products based on market research, competitive analysis, and user feedback.
• Web2App funnel optimization: leading of design, build, and optimize web funnels, including landing pages, onboarding flows, and paywalls to increase conversion rates.
• Development of subscription models, pricing strategies, and monetization funnels to improve Average Revenue Per Paying User (ARPPU). Deveraging market research, user data, and best practices to fuel continual ARPPU growth.
• Data-Driven decision making: analyze user behavior, funnel metrics, and LTV/CAC ratios to identify bottlenecks and growth opportunities.
• Development of the strategy, pricing, and revenue optimization (e.g., A/B testing).
• Collaborate closely with development, design, and QA teams to ensure efficient implementation of features, improvements, and strategic initiatives that maximize monetization.
• Establishment and continuously improve processes for product development and team operations to maximize efficiency, quality, and velocity.

• Foster a performance-driven team culture that embraces accountability, rapid iteration, and relentless pursuit of results.

   

Requirements:

• 3+ years of experience in product management (with a proven history working on subscription-based digital products)
• Deep understanding of Web2App development and growth processes.
• Understanding and responsibility for key product metrics: MAU/DAU, Retention, Churn, LTV, ARPU, Conversion Rate and Stickiness, with a systematic approach to their improvement through data analysis, product experiments and funnel optimization (including web2web and paywall‑flows)
• Strong experience with analytics, split testing, and key product metrics
• Ability to set clear requirements for development teams and monitor execution
• Hands-on experience with project management tools like Jira, Asana, and others
• Manual QA skills are a plus

• English proficiency is a plus.

   

Nice to have:

Ability to take a systematic approach to solving a problem and you are result-oriented in your work 

Outstanding communication, leadership, and stakeholder management skills.

We offer:

Competitive salary.

Remote.

Opportunities for professional growth and development.

A dynamic and fast-growing team environment.

The ability to make a real impact on the product and see tangible results.