Senior Java Developer (Merchant Acquiring) - Remote

$78k - $118k

Full-time

Blankfactor

Denver, CO

Salary: $78,000 - 118,000 per year Requirements:

8+ years of professional Java development experience, with strong expertise in Java 11+; Java 17 or 21 preferred.
Extensive experience with Spring Boot, REST APIs, microservices, and JPA/Hibernate.
Hands-on experience with merchant acquiring, payment gateways, payment processing, or financial services.
Understanding of payment transaction lifecycles, including authorization, capture, settlement, and 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 and excellent communication skills.
Required skills include Java, Spring Boot, REST APIs, microservices, JPA/Hibernate, SQL, Git, Docker, AWS, CI/CD, and Agile/Scrum.
Preferred: experience with cloud platforms (AWS preferred), Docker and Kubernetes, Kafka or other messaging platforms, CI/CD tools such as Jenkins, Bamboo, or GitHub Actions, OAuth2, OpenID Connect, or other modern authentication methods.
Preferred: experience with enterprise payment platforms or fintech organizations, card networks (Visa, Mastercard, Amex, or Discover), PCI-DSS, event-driven architecture, Kafka or RabbitMQ, or high-volume transactional systems.
Must be currently based in the United States and authorized to work in the U.S. without sponsorship.

Responsibilities:

Design, develop, and maintain scalable Java backend applications.
Build and enhance APIs and microservices for 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 architecture discussions and technical design reviews.
Improve application performance, reliability, and scalability.
Write clean, maintainable, well-tested code in line with engineering best practices.
Support CI/CD pipelines and modern DevOps practices.
Mentor junior developers and contribute to the teams technical excellence.

Technologies:

API
AWS
Backend
Bamboo
CI/CD
Cloud
DevOps
Docker
Git
GitHub
Hibernate
Support
JPA
Java
Jenkins
Kafka
Kubernetes
OpenID
Oracle
PostgreSQL
REST
RabbitMQ
SQL
Spring
Spring Boot
microservices

More:

We are seeking a Senior Java Developer to join our engineering team and tackle complex technical challenges. The role suits someone who has built scalable backend systems for payment platforms, acquiring processors, or financial institutions, using modern Java, microservices, and cloud-native architectures. This position is remote within the United States.

last updated 40 week of 2026

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Vacancy posted 2 days ago

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