Backend Tech Lead: PHP, APIs & Microservices

AgileEngine, LLC.; Kraków; On-site; PLN 140,000 - 210,000; Full time

Benefits offered by this job

Professional growth

Competitive USD-based compensation

A selection of exciting projects

Flextime

Job summary

AgileEngine is seeking a Backend Software Engineer to build and maintain PHP-based systems powering our distributed services. You will apply strong OOP and system design to keep APIs secure, scalable, and performant.

You will collaborate with Product Managers, Architects, QA, and Support to deliver reliable backend solutions, maintain documentation, and participate in code reviews and sprint ceremonies. Weekend migrations may be required occasionally.

Qualifications

• Bachelor's degree in CS or related field; equivalent professional experience accepted.
• 2 years of backend software engineering experience, primarily in PHP production environments.
• Solid understanding of OOP, design patterns, algorithms, and data structures.
• Experience building and maintaining backend systems and service integrations.
• Proficiency in secure API design and authentication/authorization concepts.
• Experience with relational databases (MySQL, PostgreSQL) and backend architecture.
• Familiarity with Git, CI/CD pipelines, and containerized environments.
• Strong communication, collaboration, and documentation skills.
• Overlap with Western European Time; weekend migration support as needed.

Responsibilities

• Develop and maintain backend systems, APIs, and integrations supporting company products and distributed services.
• Contribute to distributed systems and microservices for scalability and reliability.
• Apply OOP and architectural patterns to ensure extensibility and maintainability.
• Implement and maintain secure authentication and authorization mechanisms (OAuth2, JWT, RBAC).
• Utilize data structures, algorithms, and caching to optimize performance.
• Debug, profile, and tune performance across environments and services.
• Collaborate with Product Managers, Architects, QA, and Support to define scope and deliver.
• Participate in testing strategies with QA/QE for new and existing functionality.
• Adhere to code quality, security, and scalability standards across the lifecycle.
• Contribute to peer code reviews and knowledge sharing; maintain API docs.
• Engage in engineering reviews, sprint ceremonies, and cross-team demos.

Skills

PHP

OOP

Design patterns

Backend systems

Security & auth

Education

Bachelor's degree in Computer Science or related field

Tools

Git

CI/CD

Docker

Kubernetes

MySQL/PostgreSQL

Job description

AgileEngine is seeking a Backend Software Engineer to build and maintain PHP-based systems powering our distributed services. You will apply strong OOP and system design to keep APIs secure, scalable, and performant.

You will collaborate with Product Managers, Architects, QA, and Support to deliver reliable backend solutions, maintain documentation, and participate in code reviews and sprint ceremonies. Weekend migrations may be required occasionally.