We’re Hiring: Senior Backend Engineer (Java/Kotlin) – Remote | Payment Systems Integration Freelance
Are you a backend expert ready to take on a high-impact challenge? We're looking for a Senior Backend Engineer to help us integrate a new payment system into our platform—powering seamless, secure transactions for users around the globe.
About the Role
As part of our engineering team, you’ll lead the backend development efforts for integrating a modern payment solution. You’ll work in a fully remote, multicultural environment, collaborating with product, data, and DevOps teams to deliver a scalable and reliable system.
Your Skillset Includes:
* Strong proficiency in Java or Kotlin
* Deep experience with Spring Boot and the Spring ecosystem
* Solid understanding of MySQL or other relational databases
* Experience with AWS and cloud-native development
* Familiarity with Liquibase or similar schema management tools
* Hands-on with Git, Kafka, Firehose, and CI/CD tools like Jenkins or GitHub Actions
* Knowledge of APIs, microservices architecture, and server-side processes
* Experience with monitoring tools like Grafana or Datadog
* Excellent communication skills in English and a proactive, ownership-driven mindset
✨ Bonus Points For:
* Experience in advertising technology
* Familiarity with Airflow and DBT for data workflows
* Background in payment systems integration
* Experience working in fully remote and multicultural teams
Why Join Us?
* 100% Remote Work
* Inclusive, global team culture
* Opportunity to lead a critical payment integration project
* Regular team events and offsites
* A chance to shape the future of a fast-growing platform
If you're excited about building secure, scalable systems and want to make a real impact—we’d love to hear from you!
Apply now