HiPublic

Hello, we are looking for a Senior Backend Engineer (PHP / Laravel, Highload Systems & Integrations). Real-world experience in system design is essential. 

Our Skin Marketplace product in the iGaming industry needs an experienced backend developer who can design the architecture, build robust integrations, and take responsibility for key technical decisions.

Location: remotely.

Team: 2 Backend Developers, 2 DevOps engineers, 2 Frontend Developers, Designer, QA engineer,  Product Manager.

Requirements:

- Excellent knowledge of PHP and Laravel - сommercial work experience 4-5+ years 

- Practical experience with:

        - Clean Architecture

        - DDD

- Working with several types of external APIs:

          - Payment systems (crypto/fiat)

          - Data providers (pricing, inventory, etc.)

          - Third-party CS2 marketplace APIs - will be a plus

- Deep understanding of:

          - Working with unstable external APIs

          - Rate limits

          - Retry/backoff strategies

          - Idempotency

          - Webhooks/event-driven approach

- Async and processes:

          - Queues and background processes

          - Event-driven architecture

          - Workflow systems (Temporal is a required)

- Infrastructure and performance:

          - MySQL (optimization, indexes, complex queries)

          - Redis (various usage patterns)

          - Docker

          - Understanding of highload and scaling

- PSR12 compliance

- Experience with data caching

- Experience working with webSockets

- Level of English - Intermediate 

List of technologies:

- PHP 8.2 / Laravel 10/11 / MySQL / Redis / REST API / Docker / Git (CI/CD)

- Required: RoadRunner / Temporal (or similar workflow engines) 

- A ​​plus: Kubernetes

Responsibilities:

- System architecture design

- Key technical decision making

- Development of complex services and integrations

- Performance optimization

- Code review and quality control

Tasks description:

- Design and development of backend architecture (Clean Architecture / DDD)

- Building robust integration layers

- Developing complex business logic

- Working with asynchronous processes and workflows (Temporal)

- Integration with external APIs (payment systems, data providers, gaming APIs)

- Performance and scalability optimization

- Participation in technical solutions

Will be an advantage:

- Experience with:

     - RoadRunner

     - Kubernetes

     - Marketplace / trading systems

- Experience with high-load systems

- Experience building platform solutions

- Experience in the gaming or digital goods industry

What we could offer:

• 24 days of paid leave per year.
• 100% paid sick leave.
• Salary range: $4000–$5000 USD (depending on skills and experience).
• Full-time remote.
• Long-term collaboration.
• Sustainable business.
• Game and entertainment development company.
  
  Stages:
• Recruiter pre-view.
• Test task.
• Technical interview..
• Manager's interview..
   

We are looking for a Mid-level Backend Developer (PHP / Laravel) for our product in the eSports industry.

About the project:
This is a next-generation trading platform for CS2 skins, where users can buy and sell in-game items for real money. We are building a product that combines a B2C marketplace for players and B2B infrastructure for businesses. At the core, we have our own skin-based payment system (B2B). The project involves a large number of integrations and asynchronous logic. It is important to be able to work with external APIs and quickly understand unstable scenarios.

Reason for opening a vacancy:
Team expansion due to product growth and increased load. We are looking for a developer to accelerate the development of new features, improve system stability, and scale the backend.

Location: Remote.
Current team: 2 Backend Developers, 2 DevOps engineers, 2 Frontend Developers, Designer, QA engineer, Product Manager.

Requirements:
• 2+ years of commercial experience in the same position
• Strong knowledge of PHP and Laravel
• Basic understanding of Clean Architecture principles
• Basic understanding of DDD (aggregates, value objects)
• Practical experience integrating external services
• Experience working with REST APIs, including:
— authorization (API keys, signatures, etc.)
— idempotency
— error handling
— retry / basic backoff
— working with rate limits
• Experience working with queues (we use Horizon over Redis)
• Experience with data caching
• Experience working with webSockets
• Experience with MySQL (complex SQL, indexes, optimization)
• PSR12 compliance
• Basic understanding of fault tolerance principles (idempotency — basic level)

• Ukrainian or Russian — Upper-Intermediate+ / Advanced (for internal communication)
  • English — Intermediate

Domain & integrations experience (important):
• Experience with payment systems (crypto / fiat)
• Experience with Steam API or other gaming APIs
• Experience with marketplace / trading platforms
• Experience working with data providers (pricing APIs, etc.)
• Experience with third-party CS2 marketplace APIs — will be a strong plus 

Will be an advantage:
• Understanding of webhooks
• Experience with real-time systems
• Experience with Temporal (or similar workflow systems)

List of technologies:
• PHP 8.2 / Laravel 10/11
• MySQL
• Redis (cache, queues)
• REST API
• Docker (basic level)
• Git (CI/CD)

Responsibilities:
• Development and support of backend product logic (new features and maintenance of existing ones)
• Integration with external APIs (payment systems, data providers, gaming APIs)
• Working with queues and asynchronous processes
• Participation in task decomposition and solution design
• Performance and stability optimization
• Improving code structure and quality, participation in code reviews
• Interaction with the team

What we offer:
• 24 days of paid leave
• 100% paid sick leave
• Full-time remote work
• Long-term collaboration
• Sustainable business
• Work in a game and entertainment development company

The path to joining us:
• HR Interview (1 hour): Let’s get to know each other
• Test Task: Put your skills to the test
• Technical Interview (1 hour): Dive deeper into your expertise