Senior PHP Backend Engineer – Scalable APIs & Microservices

AgileEngine, LLC.; Szczecin; On-site; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Professional growth

Competitive USD-based compensation

Exciting projects

Flextime

Job summary

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

The role emphasizes hands-on development, collaboration with product teams, and adherence to security and scalability standards. Location is Szczecin, Poland, with Western European Time overlap, and weekend migration support as needed.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent professional experience.
• 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 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.
• Able to assist in a situation of emergency during a weekend migration (not frequent).

Responsibilities

• Develop and maintain backend systems, APIs, and integrations supporting company products and distributed services.
• 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 (e.g., OAuth2, JWT, RBAC).
• Utilize data structures, algorithms, and caching strategies to optimize system performance and responsiveness.
• Conduct debugging, profiling, and performance tuning across multiple environments and services.
• Collaborate with Product Managers, Architects, QA, and Support Teams to gather requirements, define scope, and ensure successful delivery.
• Participate in testing strategies with QA/QE teams to ensure coverage of both new and existing functionality.
• Adhere to code quality, security, and scalability standards across the development lifecycle.
• Participate in peer code reviews, contributing to knowledge sharing and consistent practices.
• Maintain technical documentation, including API specifications and relevant implementation notes.
• Participate in engineering reviews, sprint ceremonies, and cross-team demos to align on progress and priorities.
• Ensure compliance with company policies regarding open-source usage and third-party dependencies.

Skills

PHP

OOP

Design patterns

Algorithms

Data structures

Secure API design

Relational databases

Git

Docker

Kubernetes

CI/CD

RESTful API

GraphQL

AWS

Redis

RabbitMQ

Kafka

Education

Bachelor's degree in Computer Science or related field

Tools

MySQL

PostgreSQL

Git

Docker

Kubernetes

CI/CD pipelines

Prometheus

Job description

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

The role emphasizes hands-on development, collaboration with product teams, and adherence to security and scalability standards. Location is Szczecin, Poland, with Western European Time overlap, and weekend migration support as needed.