Backend Tech Lead - PHP, APIs & Microservices

AgileEngine; Kraków; Hybrid; PLN 350,000 - 467,000; Full time

Benefits offered by this job

Professional growth

Competitive compensation

A selection of exciting projects

Flextime

Job summary

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

This hands-on role suits someone who values clean code and sound engineering fundamentals. You will develop and maintain backend systems, APIs, and integrations, write modular PHP code, contribute to microservices, and implement secure authentication and authorization.

Qualifications

• Bachelor's degree or equivalent professional experience.
• 2 years backend software engineering experience, 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 fundamentals.
• Familiarity with Git, CI/CD pipelines, and containerized environments.
• Ability to debug, optimize, and deliver reliable solutions.
• Good communication, collaboration, and documentation skills.
• Overlap with Western European Time.
• Willingness to assist during weekend migration in emergencies.
• Upper-intermediate English level.

Responsibilities

• Develop and maintain backend systems, APIs, and integrations supporting company products and distributed services.
• Write clean, modular, and testable code in PHP and complementary technologies.
• Contribute to distributed systems and microservices that support scalability, reliability, and separation of concerns.
• Apply OOP principles and solid architectural patterns to ensure extensibility and maintainability.
• Implement and maintain secure authentication and authorization mechanisms (OAuth2, JWT, RBAC).
• Utilize data structures, algorithms, and caching strategies to optimize system performance.
• Conduct debugging, profiling, and performance tuning across environments.
• Collaborate with Product Managers, Architects, QA, and Support Teams to gather requirements and deliver.
• Participate in testing strategies with QA/QE teams to ensure coverage.
• Adhere to code quality, security, and scalability standards across the lifecycle.
• Participate in peer code reviews and knowledge sharing.
• Maintain technical documentation, including API specs and notes.
• Participate in engineering reviews, sprint ceremonies, and cross-team demos.
• Ensure compliance with open-source usage and third-party dependencies.

Skills

OOP concepts

Design patterns

Algorithms

Data structures

PHP development

Secure API design

Relational databases

Git

CI/CD

Containerization

Communication

English (B2+)

Education

Bachelor's degree in Computer Science/Software Engineering

Tools

Git

CI/CD pipelines

Docker

Kubernetes

MySQL

PostgreSQL

Job description

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

This hands-on role suits someone who values clean code and sound engineering fundamentals. You will develop and maintain backend systems, APIs, and integrations, write modular PHP code, contribute to microservices, and implement secure authentication and authorization.