C

Senior Backend Engineer (PHP/Laravel) – Blockchain Infrastructure

Remote
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Join Coinspaid Dev as a Senior Backend Engineer to design, develop, and maintain scalable PHP/MySQL systems for blockchain infrastructure. Focus on high-performance, secure, and distributed solutions while collaborating cross-functionally. Requires 5+ years in PHP, Laravel, and domain-driven design with experience handling financial transactions and Kafka-based messaging.

Key Highlights
5+ years of senior PHP/Laravel backend engineering experience
Expertise in distributed systems, blockchain infrastructure, and financial transaction handling
Full remote work with flexible, async-friendly environment and strong company benefits
Key Responsibilities
Collaborate with cross-functional teams to design and deliver scalable backend features for blockchain infrastructure
Develop and maintain high-performance PHP/MySQL systems with a focus on clean, reusable, and efficient code
Implement and optimize complex financial transaction logic with idempotency, multi-currency precision, and exact arithmetic
Technical Skills Required
PHP Laravel MySQL
Benefits & Perks
Flexible monthly benefit budget (up to €230/month)
Fully remote work with optional office/relocation support
Medical insurance or reimbursement, mental health support, and financial assistance for life events
Nice to Have
Experience with Go, fintech, payments, or crypto domains
High-load system optimization expertise

Job Description

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:

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