Bitrix-разработчик (React, PHP)

Paybis is a global fintech company operating at the intersection of crypto and traditional payments. Since 2014, we've been building products that help people and businesses buy, sell, and exchange cryptocurrency. We serve 8.6M+ customers across 180+ countries and operate as a self-funded company with ~200 people across Europe, Ukraine, and the US.

We hold a MiCA CASP authorisation and a Payment Institution (PSD2) licence in Latvia — one of a small group of companies in Europe holding both simultaneously — alongside FinCEN MSB and FINTRAC registrations.

We are currently strengthening our backend engineering team to accelerate development of our native mobile application and core backend services. This role is critical for improving delivery speed, scalability, and long-term architecture quality across our platform.

We are looking for a strong Senior PHP Back-end Developer who combines deep PHP/Symfony expertise with architectural thinking, ownership mindset, and passion for building reliable high-load backend systems.

As a Senior PHP Backend Developer (IC-4), you'll work on scalable backend services powering our fintech and crypto products. This is a hands-on engineering role with high ownership and autonomy — you'll contribute to API development, microservices architecture, legacy refactoring, performance optimization, and engineering quality improvements across the platform.

You'll collaborate daily with backend engineers, DevOps, QA, mobile developers, and product teams. The ideal candidate is proactive, technically mature, comfortable with complex systems, and capable of driving backend improvements independently.

• Design, develop, and maintain scalable backend services using PHP 8 and Symfony 6/7
• Build and support secure RESTful APIs and third-party service integrations
• Contribute to microservices architecture development and service decomposition
• Improve backend scalability, reliability, and performance
• Refactor legacy code and systematically reduce technical debt
• Participate in architecture discussions and propose engineering improvements
• Conduct code reviews and raise engineering quality standards across the team
• Troubleshoot production issues and support incident resolution
• Collaborate with QA, DevOps, Product, and Mobile teams
• Support CI/CD processes and production releases
• Mentor junior and middle engineers as you settle in

Must have:

• 5+ years of commercial PHP development
• 2+ years hands-on experience with Symfony 6/7 in production
• Strong understanding of OOP, SOLID principles, and design patterns — applied in practice, not just in theory
• Experience building and maintaining REST APIs in service-oriented or microservices architecture
• Strong knowledge of MySQL/MariaDB: query optimization, Doctrine ORM, migrations
• Experience with RabbitMQ or Kafka in production environments
• Caching experience: Redis, Valkey, or Memcached
• Git proficiency: branching strategy, PR process, active code review participation
• Comfortable working in Docker-based environments
• Strong production debugging and troubleshooting skills
• Awareness of security fundamentals: OWASP Top 10, IDOR, SQL injection prevention
• English B2/C1 — daily written communication: PRs, tickets, async discussions



Soft skills we genuinely care about:

• Ownership Mindset — proactive improvements and end-to-end task ownership are an expectation, not an option
• Engineering-First Thinking — instinctively considers scalability, maintainability, and code quality
• Autonomous Execution — self-organizes, accurately estimates, and delivers without micromanagement
• Adaptability — switches between tasks and changing requirements without loss of quality
• Cross-functional Collaboration — works effectively with QA, DevOps, Product, and Mobile teams daily
• Pragmatic Problem-Solving — makes the right trade-off between speed and quality under pressure

• AWS experience: ECS, Lambda, SQS/SNS, Aurora, S3, API Gateway
• Infrastructure as Code: Terraform or Serverless Framework
• GitLab CI/CD pipeline configuration and maintenance
• NoSQL experience: DynamoDB or MongoDB
• Background in fintech, payments, or crypto
• Experience integrating with PSPs (Checkout.com, Stripe, Adyen, Worldpay, or similar)
• High-load backend systems experience
• Go — existing experience or genuine interest in learning
• Experience mentoring engineers or leading technical initiatives
• Familiarity with LLM/AI-assisted development tools

• Remote-first with high autonomy and minimal micromanagement
• Product company, not outsourcing — you own what you build
• Real scale: 8.6M+ users, 180+ countries, production systems that matter
• Technically challenging domain: fintech and crypto problems that don't have easy answers
• Modern, relevant stack — no legacy-only work
• Clear career path: IC-4 Senior → IC-5 Strong Senior → IC-6 Tech Lead
• A culture that values quality over speed, accountability without blame, and continuous improvement

Focus:

• PHP/Symfony expertise
• Backend engineering depth
• Ownership and problem-solving

Focus:

• Architecture thinking
• APIs and scalability
• Design patterns and engineering decisions

Focus:

• Culture fit
• Communication
• Growth potential
• Team collaboration

Paybis is a global fintech company operating at the intersection of crypto and traditional payments. Since 2014, we've been building products that help people and businesses buy, sell, and exchange cryptocurrency. We serve 8.6M+ customers across 180+ countries and operate as a self-funded company with ~200 people across Europe, Ukraine, and the US.

We hold a MiCA CASP authorisation and a Payment Institution (PSD2) licence in Latvia — one of a small group of companies in Europe holding both simultaneously — alongside FinCEN MSB and FINTRAC registrations.

As a Backend Developer, you will be responsible for building and maintaining backend services, contributing to system architecture, and ensuring high performance, scalability, and reliability of our products.

We are looking for a strong PHP engineer with solid backend experience, analytical thinking, and a proactive mindset, who is eager to grow and contribute to product development.

•  Design, build, and maintain efficient, reusable, and reliable PHP code
• Develop features end-to-end, from concept to production
• Refactor legacy code to improve stability and performance
• Identify bottlenecks, bugs, and implement effective solutions
• Write unit, integration, and functional tests
• Participate in code reviews and contribute to engineering standards
• Collaborate with Developers, QA, DevOps, and Product teams
• Contribute to improving system architecture and scalability
• Participate in production support and on-call activities when required 

•  3+ years of experience in PHP backend development
• Strong experience with Symfony (v5/6)
• Experience with MySQL and Redis
• Experience with message brokers (e.g. RabbitMQ)
• Solid understanding of OOP, DDD, and design patterns
• Understanding of microservices / service-oriented architecture
• Experience writing unit, integration, and functional tests
• English sufficient for professional communication 

• Experience with AWS (SNS, SQS, DynamoDB, API Gateway, Lambda, ECS)
• Experience with payment integrations (card processing, PayPal, etc.)
• Experience with crypto or blockchain technologies
• DevOps experience (Terraform, Serverless)
• Experience with CI/CD pipelines and tools (GitLab, Jira, Docker) 

•  Strong desire to learn, grow, and develop within the company
• Ability to work both independently and as part of a team
• Proactive mindset and problem-solving attitude
• Clear and structured communication
• Ability to document technical solutions and share knowledge
• Collaborative approach and openness to feedback

• Exciting and impactful work in a fast-growing fintech environment
• A friendly, supportive, and highly skilled team
• Modern tech stack and cloud-based service-oriented architecture
• Opportunity to work in the evolving fintech & cryptocurrency space
• A product-driven company focused on quality and continuous improvement 

1.  HR Screening
2. Technical Interview
3. Test Task (if required)
4. Final Interview 

This is a great opportunity for a backend developer who wants to:

• work on real, scalable products
• deepen backend and architecture expertise
• grow into a stronger engineer (Middle → Senior)
• contribute to a fast-growing fintech company