[Remote] Senior Java Developer (Merchant Acquiring) – US Remote
Note: The job is a remote job and is open to candidates in USA. Blankfactor is seeking a Senior Java Developer with strong experience in merchant acquiring and payment processing to join their engineering team. The role involves designing and developing scalable backend applications, enhancing APIs and microservices, and collaborating with cross-functional teams to deliver enterprise-grade payment solutions.
Responsibilities
- Design, develop, and maintain scalable Java-based backend applications
- Build and enhance APIs and microservices supporting merchant acquiring and payment processing
- Develop secure, high-performance solutions for payment authorization, settlement, reconciliation, and transaction processing
- Collaborate with product managers, architects, QA, and cross-functional engineering teams
- Participate in system architecture discussions and technical design reviews
- Optimize application performance, reliability, and scalability
- Write clean, maintainable, and well-tested code following engineering best practices
- Support CI/CD pipelines and modern DevOps practices
- Mentor junior developers and contribute to technical excellence across the team
Skills
- 8+ years of professional Java development experience
- Strong expertise with Java 11+ (Java 17/21 preferred)
- Extensive experience with: Spring Boot, REST APIs, Microservices, JPA/Hibernate
- Hands-on experience with merchant acquiring, payment gateways, payment processing, or financial services
- Experience with transaction lifecycle concepts including: Authorization, Capture, Settlement, Reconciliation
- Experience with relational databases such as PostgreSQL or Oracle
- Strong understanding of secure application development and API design
- Experience working in Agile/Scrum environments
- Excellent communication skills
- Java
- Spring Boot
- REST APIs
- Microservices
- JPA/Hibernate
- SQL (PostgreSQL, Oracle, or similar)
- Git
- Docker
- AWS
- CI/CD
- Agile/Scrum
- Experience with cloud platforms (AWS preferred)
- Experience with Docker and Kubernetes
- Familiarity with Kafka or other messaging platforms
- Knowledge of CI/CD tools such as Jenkins, Bamboo, or GitHub Actions
- Experience with OAuth2, OpenID Connect, or modern authentication mechanisms
- Previous experience working with enterprise payment platforms or fintech organizations
Company Overview
- Blankfactor is a team of engineers, project managers, issue solvers & tech consultants committed to developing & innovating tech solutions. It was founded in 2019, and is headquartered in San Francisco, California, USA, with a workforce of 501-1000 employees. Its website is https://blankfactor.com/.