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Senior Backend Developer (PHP)

Open to remote

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SuperCity is a cross-platform city-builder with over 30 million players and a 14+ year history, running on 8 platforms.

Every server error can cost our players their time — and us real revenue. That’s why we place a strong emphasis on stability, performance, and reliability.

To help us evolve our backend, maintain a high-load production system, and deliver new engaging features and game mechanics, the SuperCity team is looking for a Senior Backend Developer (PHP).

Position at

Responsibilities

Backend Development
  • Develop and maintain backend services using PHP.
  • Work with a high-load production system (~100k DAU).
  • Extend and support a monolithic backend architecture, improving stability and scalability.
Architecture & APIs
  • Design, implement, and maintain APIs and internal service interactions.
  • Work with API contracts based on JSON Schema.
  • Use jRPC for internal communication between system components.
Infrastructure & Data
  • Work with MongoDB, Redis, AWS, and Centrifugo.
  • Optimize data storage, caching strategies, and background processes.
  • Ensure system reliability under real production load.
Performance & Monitoring
  • Analyze system performance using Grafana and other monitoring tools.
  • Identify bottlenecks, degradation points, and inefficiencies.
  • Optimize queries, caching layers, and heavy backend flows.

Required Qualifications

  • Strong commercial experience with PHP backend development (5+ years).
  • Experience in GameDev or other high-load backend systems.
  • Solid understanding of OOP and software design principles.
  • Hands-on experience with MongoDB and Redis.
  • Experience working with AWS.
  • Ability to analyze metrics and work with monitoring tools such as Grafana.
  • Understanding of API contracts and JSON Schema.
  • Experience with jRPC or similar RPC/API approaches.
  • Strong understanding of high-load system challenges, including:
    • Caching strategies
    • Concurrency and race conditions
    • Fault tolerance
    • Scalability
    • Bottleneck identification
  • Comfortable working with monolithic architectures and evolving them without disruptive rewrites.
Nice to Have
  • Experience with real-time systems like Centrifugo.
  • Experience supporting live game servers, live-ops, and event-driven logic.
  • Experience profiling and optimizing PHP applications.
  • Understanding of CI/CD, observability, and production workflows.
  • Experience with evolutionary development of legacy systems.

What we offer:

  • Work in a stable international company.
  • Competitive salary, reviewed every 6 months based on market trends and your performance.
  • Flexible work setup: whether you prefer coming to the office, working from home, or a hybrid of the two, the choice is yours.
  • Flexible benefits: an annual $1000 to spend on perks, including health insurance, sports, therapy, education and language classes.
  • Full pay during sick leaves and personal leaves, in addition to 20 working days of vacation annually.
  • Open statistics, including earnings from our games.
  • An epic team ready to share their experience and knowledge.
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Senior Backend Developer (PHP)

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