Software Engineer - Java, SpringBoot, Data

Job Description

Kunai builds full-stack technology solutions for banks, credit and payment networks, infrastructure providers, and their customers. Together, we are changing the world's relationship with financial services. At Kunai, we help our clients modernize, capitalize on emerging trends, and evolve their business for the coming decades by remaining tech-agnostic and human-centered.

We are seeking a Senior Software Engineer with expertise in Java, SpringBoot, MongoDB, and cloud solutions with a strong foundation in software architecture. In this role, you will work with a leading bank to build a modernized data platform that includes Data Standardization, Producer/Consumer Self-Service, APIs, Data Governance, and Core Services. The ideal candidate will be passionate about building performant, scalable, and maintainable systems and comfortable working in a modern, event-driven microservices environment. This role requires hands-on backend development skills, architectural insight, and the ability to navigate and improve large, complex codebases.

Key Responsibilities:

Design, develop, and maintain scalable backend services using Java and SpringBoot

Data modelling focused on relational databases, MongoDB, or Neo4J

Cloud development experience in either on-prem or public cloud, with Docker and Kubernetes

Implement and optimize event-driven architecture with Apache Kafka, ensuring reliable and asynchronous communication between services

Collaborate with architects and senior engineers to review and enhance backend system architecture

Review and refactor large codebases, ensuring best practices in software design and performance optimization

Conduct code reviews, performance tuning, and troubleshoot issues across the stack

Maintain high standards of code quality, security, scalability, and maintainability

Required Skills:

10+ years experience in Java, Java Streams, and SpringBoot

Significant database / data modelling experience either on relational databases, MongoDB, or Neo4J

Deep understanding of distributed systems, caching strategies, and scalability challenges

Strong understanding of software architecture, design patterns, and system design principles

Comfortable working with large codebases, including reviewing and refactoring code

Cloud development experience either on-prem or public cloud, with Docker and Kubernetes

Preferred Skills:

Advanced experience designing and deploying Kafka-based messaging systems

Skilled in React and React Hooks for full-stack development when needed

Experience with distributed caching technologies

Salary Range: $125,000 - $165,000 annually

This range reflects the base salary that we reasonably expect to pay. Actual compensation may vary depending on relevant factors including experience, skills, and location.

Our success over the past 20 years is rooted in our exceptional team, which thrives in a culture of collaboration, creativity, and continuous learning.

We are proud to offer our employees a range of benefits, including competitive compensation, professional development opportunities, and flexible work arrangements, all designed to help them thrive. As we continue to expand, we remain committed to cultivating an environment where people feel valued, have a voice, and are given the tools to grow—both personally and professionally—while pushing the boundaries of innovation in the fintech industry.

Our success over the past 20 years is rooted in our exceptional team, which thrives in a culture of collaboration, creativity, and continuous learning.

We are proud to offer our employees a range of benefits, including competitive compensation, professional development opportunities, and flexible work arrangements, all designed to help them thrive. As we continue to expand, we remain committed to cultivating an environment where people feel valued, have a voice, and are given the tools to grow—both personally and professionally—while pushing the boundaries of innovation in the fintech industry.

Full-time