Kunai is hiring a Senior Backend Engineer working primarily in Go to design and build services that transform and expose data from a core banking system. Responsibilities include building integration/abstraction layers (APIs or event streams), enforcing data integrity and schema versioning, working with Kafka/CDC pipelines, and collaborating with profile and data engineers. The role is remote in the United States and requires 5+ years of backend engineering experience.

Responsible for developing, debugging, integrating, and maintaining applications in the FIS Profile Core Banking System using PSL/MUMPS and GT.M. Requires at least 3 years' experience with core banking systems, knowledge of FIS platform and banking operations (deposits, loans, debit card processing); additional desirable skills include automated testing (Z-unit), Unix/BSH scripting, AWS (EC2/S3/CloudWatch), and Tidal scheduler.

Kunai seeks a Senior Software Engineer to join a digital payments modernization program integrating a major card network into a large U.S. financial institution. Responsibilities include designing domain/service architecture, building Spring Boot/JPA services, orchestrating integrations (Apache Camel), developing event-driven systems (Kafka), frontend micro-frontend work (Next.js/React/TypeScript), and owning OAuth2/OIDC identity flows. The role requires experience with PostgreSQL/Oracle, container platforms (OpenShift/Kubernetes), performance testing, CI/CD and test-driven practices. Minimum 5+ years professional software engineering experience. No sponsorship available.

Hands-on senior engineer embedded on a digital payments modernization program supporting integration of a major card network. Responsibilities include domain-driven design, building Spring Boot/JPA services with PostgreSQL/Aurora and Liquibase, integration/orchestration with Apache Camel, event-driven work with Kafka, micro-frontend development (Next.js/React/TypeScript), OAuth2/OIDC identity work (e.g., Okta), cloud architecture (AWS IAM, S3, CloudFront), OpenShift-based deployments, and enterprise performance testing. Role requires 5+ years professional software engineering experience (primarily Java). Visa sponsorship is not provided.

Kunai is hiring a Senior Software Engineer (Scala) to design and build scalable, immutable, distributed systems with a focus on data streaming and backend services. The role requires 5+ years of software development experience, experience with functional programming (Scala), and cloud experience (AWS and GCP); a bachelor's degree is listed as the minimum requirement.

Hands-on senior engineering role supporting a digital payments modernization program. Responsibilities include designing and executing enterprise performance testing, building and modernizing backend services (primarily Java) on OpenShift with PostgreSQL/Oracle, instrumenting legacy and modern stacks (Tomcat, WebSphere), and working with event-driven architectures and PCI-related data pipelines. Requires 5+ years of software engineering experience and experience with relational databases and containerized deployments.

Senior Software Engineer working primarily in Java on backend services and performance testing for a card network integration program. Required: 5+ years experience, PostgreSQL or Oracle, containerized deployments (OpenShift/Kubernetes), experience with performance testing and profiling, familiarity with Tomcat/WebSphere and PCI/compliance considerations. Employer cannot provide visa sponsorship for this role.