Senior PHP Backend Engineer

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

- 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/