Senior PHP Backend Engineer at CoinsPaid

Job Description

Coinspaid Dev is the engineering brand behind the technology, infrastructure, and R&D expertise built within Coinspaid. With more than 120 engineersand 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

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/