Senior PHP Developer

We are seeking a highly skilled Senior PHP Engineer with strong experience in the FinTech domain to join a Barcelona-based startup. You will work directly with the CTO, playing a key role in shaping the technical foundation of a banking-as-a-service platform that powers global corporate payment operations, including crypto-related services.

This is a full-time, long-term opportunity with immediate start. The team is small today but expected to grow quickly, giving you the chance to take on more responsibility and help drive technical direction.

Must-Have Requirements

- 4+ years of professional experience with pure PHP.

- Hands-on experience developing payment gateways.

- Solid background with CQRS and DDD.

- Expertise in hexagonal architecture.

- Practical experience with RabbitMQ.

- At least B2 level spoken English (comfortable with direct communication with the CTO and stakeholders).

Example Scope of Work (from the CTO):

- Developing and improving the payment gateway.

- Implementing integrations with vendors such as 3dsecure.io, Payshield, ChargebackHelp and payment processors like Stripe, Finix, TriplePay, CPay, PayNetWorx.

- Conducting extensive refactoring, moving the codebase towards microservices, hexagonal architecture, and DDD.

- Investigating and mitigating performance bottlenecks, improving observability and test coverage.

- Reducing fragility of unit tests and setting up functional tests from scratch.

Being a part of 3asoft means having:
- High level of flexibility and freedom
- p2p relationship with worldwide customers
- Competitive compensation paid in USD
- Fully remote working