Senior PHP Back-end Developer (Symfony)

We are looking for a Senior PHP Back-end Developer to join our experienced engineering team, working on core products and services in the fast-paced fintech and crypto industry. This is a hands-on role focused on developing scalable back-end solutions, designing APIs, contributing to microservices architecture, and maintaining high code quality across our backend systems.

As part of a collaborative environment with developers, QA engineers, DevOps, and business analysts, you’ll work on both greenfield projects and legacy refactoring. You will have the freedom to shape architecture, contribute best practices, and bring real impact to a product used by thousands of customers globally.

This role is ideal for a sharp, motivated engineer who combines excellent PHP/Symfony skills with strong architectural thinking, a commitment to clean code, and the drive to continuously learn and share knowledge.

• Design, develop, and maintain efficient, reusable, and scalable PHP back-end components (Symfony 6/7)
• Collaborate with PMs, Product Owners, and cross-functional teams to deliver impactful features
• Improve and evolve the service-oriented architecture and microservices landscape
• Refactor legacy code to enhance performance, scalability, and maintainability
• Conduct and enforce thorough code reviews, unit and integration test coverage
• Participate in architectural discussions and bring your proposals to the architecture board
• Troubleshoot, debug, and resolve performance bottlenecks and production issues
• Support the CI/CD process and production releases;
• Take part in on-call rotations
• Document technical designs and share knowledge across the team
• Mentor junior developers (especially for those with Team Lead ambitions)

• 5+ years of experience in PHP development, with 2+ years specifically using Symfony 6/7
• Solid understanding of OOP, DDD, and design patterns
• Strong experience with API development, including secure RESTful services and iframe data exchange
• Deep knowledge of relational databases (e.g., MariaDB) and NoSQL (e.g., Redis)
• Hands-on experience with message brokers like RabbitMQ
• Knowledge of microservices architecture and modular system design
• Familiarity with unit and integration testing, test coverage, and clean code standards

• Experience with:
• AWS services (Aurora, DynamoDB, SNS, SQS)
• Terraform, Docker, GitLab CI, Serverless architecture
• Payment integrations (e.g., PayPal, card processing gateways)
• High-traffic websites (10K+ daily users)
• Crypto/blockchain technologies
• DevOps practices and CI/CD automation
• Working with LLMs
• Go (or interest in learning Go)
• Experience in secure coding practices, including:
• CORS, CSRF, XSS, SQL injection, IDOR prevention
• Configuration and secrets management
• CI security practices and dependency vulnerability management

• Problem Solving & Analysis – Applies a structured approach to identifying root causes and resolving complex issues in service-oriented architecture
• Communication & Teamwork – Can explain technical ideas clearly to teammates and non-technical stakeholders; works efficiently within multidisciplinary teams
• Initiative & Independence – Self-motivated and proactive in identifying technical debt, proposing improvements, and driving them to completion
• Continuous Learning & Technical Adaptability – Stays updated on backend development trends, tools, and practices; open to experimenting with new technologies
• Process Documentation & Knowledge Sharing – Contributes to internal documentation, promotes best practices, and actively shares knowledge with the team

• Challenging work in a fast-developing and highly dynamic fintech environment
• A product-driven company with long-term focus and continuous development
• A talented and supportive team with a collaborative culture
• Opportunity to work with modern tech stack in a cloud-native, service-oriented architecture
• Exposure to the crypto and blockchain industry, with learning opportunities and ownership
• Flexibility in working arrangements (remote-first, global team)
• A chance to leave your mark on a product used by thousands of customers globally