Senior Payments Backend Engineer - Secure APIs & Scale

PLAYTOMIC; España; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Health insurance

Meal vouchers

Gym discounts

Birthday day off

Wellness days

Job summary

Playtomic is seeking a Senior Backend Engineer for the Payments team. You will develop robust payments solutions, maintain APIs, and work with third-party gateways to ensure secure, scalable transactions. A strong focus on performance and code quality is required.

You will collaborate with cross-functional teams, drive API design, and help shape payment architecture while operating in a fast-paced, international environment. Located in Madrid or able to travel to Madrid.

Qualifications

• Proven backend engineer with API design and integration experience.
• Experience with payment gateways and secure transaction processing.
• Strong knowledge of Spring Boot, Java, MongoDB, MySQL, and Kubernetes.
• Excellent written and spoken English; ability to work with remote, multicultural teams.
• Degree in Computer Science or related field.

Responsibilities

• Develop and maintain APIs and services for frontend-backend communication and third-party integrations.
• Collaborate with product managers, designers and frontend/mobile engineers to craft solutions.
• Integrate and optimize secure payment processing with gateways in compliance with standards.
• Ensure high performance and responsiveness to frontend requests.
• Maintain high code quality through reviews, profiling and best practices.

Skills

Backend experience

API design

Communication

Problem solving

Fast-paced work

English fluency

Education

Degree in CS/Engineering

Tools

Spring Boot

Java 17

MongoDB

MySQL (Aurora)

Kubernetes

Job description

Playtomic is seeking a Senior Backend Engineer for the Payments team. You will develop robust payments solutions, maintain APIs, and work with third-party gateways to ensure secure, scalable transactions. A strong focus on performance and code quality is required.

You will collaborate with cross-functional teams, drive API design, and help shape payment architecture while operating in a fast-paced, international environment. Located in Madrid or able to travel to Madrid.