Senior PHP Backend Engineer

Coinspaid Dev is the engineering brand behind the technology, infrastructure, and R&D expertise built within Coinspaid. With more than 120 engineers and over 11 years of industry experience, Coinspaid Dev brings together software engineering, infrastructure, security and R&D teams with experience building distributed systems and blockchain infrastructure operating across more than 20 blockchain networks. Coinspaid Dev emerges as an independent engineering brand with a straightforward mission: to advance blockchain infrastructure engineering and contribute practical expertise back to the industry. The structure is new. The experience behind it is not. Responsibilities:

Collaborate with cross-functional and cross-domain teams to gather requirements, design solutions, and deliver features

Design, develop, and maintain backend systems using PHP and MySQL(or similar), ensuring they are scalable and maintainable

Implement and optimize complex features with a focus on clean, reusable, and efficient code

Write unit tests to ensure the reliability and scalability of code

Participate in code reviews, architecture discussions, and ensure adherence to best practices in software development

Monitor and troubleshoot production systems, ensuring the highest levels of availability, performance, and security

Share on-call duties with the team to ensure smooth operations of the systems in production

Stay updated with new technologies and trends, and introduce them where appropriate to enhance system performance and maintainability

Experience (5+ years) in object-oriented PHP and modern PHP tools

Software design principles (SOLID, KISS, DRY) and layered architecture

Applied DDD practices: bounded contexts, aggregates, domain events

Good knowledge of the latest versions of Laravel framework

Strong understanding of relational databases like MySQL/PostgreSQL including transaction management

Experience in database query optimization, analysing deadlocks and db performance

Message-driven services in production with Apache Kafka or a comparable broker

Handling money in application code: exact arithmetic, explicit rounding rules, multi-currency precision, idempotent money-moving operations

Security best practices

Experience with monitoring tools (Prometheus, Grafana or similar)

Working with Docker/Docker Compose/Kubernetes on a daily basis

Good level of spoken and written English (B1+) and Russian

Experience with Go

Fintech, payments, or crypto domain experience

High-load

Why join CryptoProcessing by Coinspaid

You’ll be joining a company that is actively shaping its space – with enough scale to matter and enough room to make an impact.

At Coinspaid, people are expected to think, contribute, and take ownership – and are supported in doing so.

We focus on flexibility, wellbeing, and long-term growth – without overcomplicating how benefits work.

Flexible Benefits

Benefit Bar – up to €230/month A flexible monthly budget you can use for what matters most to you – from sports and mental health to coworking, home office, or medical-related expenses.

Work & Flexibility

• Fully remote work from almost anywhere

• Optional offices and relocation support

• Flexible, async-friendly environment

Growth & Learning

• Budget for courses, certifications, and professional development

• Language learning support

• Cross-team learning and knowledge sharing

Wellbeing & Support

• Medical insurance or reimbursement depending on location

• Access to mental health support

• Financial support for important life events

Extras

• Merch shop with rewards system

• Team offsites and company events

Sounds good? Well then, we can’t wait to see your resume! To learn more please visit: https://coinspaid.com/about-us/ & https://coinspaid.com/careers/

Requires 5+ years of object-oriented PHP experience, Laravel, relational databases, message-driven services, Docker, Kubernetes, monitoring tools, security practices, and English and Russian proficiency.

Key Responsibilities

• developing backend systems
• optimizing database queries
• monitoring production systems

Skills & Tools

PHP, MySQL, SOLID, KISS, DRY, Domain-Driven Design (DDD), Laravel, PostgreSQL, Apache Kafka, Prometheus, Grafana, Docker, Docker Compose, Kubernetes, Go

Job Details

• Category: Software Development
• Seniority: Senior Level
• Commitment: Full Time
• Workplace: Remote — Europe
• Languages: English, Russian

Benefits

• Relocation assistance

About Coinspaid

A financial technology company providing payment processing and blockchain infrastructure services. — Industry: Finance

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