Senior Software Engineer (Payments Platform & Modernization)

Kunai; Dallas (TX); On-site; USD 140,000 - 190,000; Full time

Job summary

Kunai is assembling a team of Senior Software Engineers to advance a high-impact digital payments modernization program in the United States. You will contribute across domain-driven design, architecture, and pragmatic implementation from backend services to frontend integrations using Next.js/React and TypeScript.

You will own robust backend services in Java, with PostgreSQL and OpenShift, while shaping cloud-native architecture, security, and CI/CD practices.

Qualifications

• 5+ years of professional software engineering experience, primarily in Java.
• Strong working knowledge of relational databases — Oracle and/or PostgreSQL required; PostgreSQL Aurora experience is a plus.
• Experience deploying and operating services in containerized environments (OpenShift, Kubernetes).
• Experience with Spring Boot/JPA, business rules engines (Drools), and integration/orchestration frameworks (Apache Camel).
• Experience owning OAuth2/OIDC identity flows end-to-end, including provider integration.

Responsibilities

• Build and maintain full-stack backend services supporting card network integration, primarily in Java with PostgreSQL and OpenShift.
• Contribute to application modernization, migrating services to cloud-native environments.
• Lead architecture design and domain-driven design decisions across streams.
• Develop and govern CI/CD, testing pipelines, and automated deployments.

Skills

Java

Spring Boot

PostgreSQL

Kafka

OpenShift

Kubernetes

OAuth2/OIDC

Domain-Driven Design

Apache Camel

React/Next.js

TypeScript

Education

Bachelor’s Degree

Tools

Liquibase

Drools

Apache Camel

Kafka

OpenShift

Job description

Kunai is assembling a team of Senior Software Engineers to advance a high-impact digital payments modernization program in the United States. You will contribute across domain-driven design, architecture, and pragmatic implementation from backend services to frontend integrations using Next.js/React and TypeScript.

You will own robust backend services in Java, with PostgreSQL and OpenShift, while shaping cloud-native architecture, security, and CI/CD practices.