Software Engineer - Java, SpringBoot, Kafka New Remote - United States

Kunai Co; United States; Remote; USD 125,000 - 165,000; Full time

Job summary

An innovative firm is seeking a Senior Software Engineer to join their dynamic team. This role focuses on building a modernized data platform for a leading bank, utilizing Java, Spring Boot, and Kafka. The ideal candidate should be passionate about creating scalable, maintainable systems and thrive in an event-driven microservices environment. Join a collaborative culture that values creativity and continuous learning while pushing the boundaries of fintech innovation. This is an exciting opportunity to make a significant impact in the financial services sector.

Benefits

Flexible work arrangements

Professional development opportunities

Competitive compensation

Qualifications

• Strong foundation in software architecture and backend development.
• Experience with event-driven architecture and large codebases.

Responsibilities

• Design and maintain scalable backend services using Java and SpringBoot.
• Implement event-driven architecture with Apache Kafka.

Skills

Java

Spring Boot

Apache Kafka

React

Distributed Systems

MongoDB

Tools

Docker

Kubernetes

Job description

Software Engineer - Java, SpringBoot, Kafka

Remote - United States

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, Spring Boot, React, and Kafka 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

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

Work with MongoDB and other data stores to manage persistence layers and ensure efficient query performance

Partner with frontend developers to support dynamic user interfaces, primarily built in React

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

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

Required Skills:

Proficiency in Java, Java Streams, and the SpringBoot framework

Experience with Apache Kafka and building event-driven systems

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

Experience with distributed caching technologies

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

Comfortable working with large codebases, including reviewing and refactoring code

Familiarity with React for supporting full-stack development when needed

Preferred Skills:

Advanced experience designing and deploying Kafka-based messaging systems

Familiarity with containerization and orchestration tools like Docker and Kubernetes

Experience working with MongoDB or other NoSQL databases

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.

Create a Job Alert

Interested in building your career at Kunai? Get future opportunities sent straight to your email.

Apply for this job

*

indicates a required field

First Name *

Last Name *

Email *

Phone

Resume/CV

Enter manually

Accepted file types: pdf, doc, docx, txt, rtf

Enter manually

Accepted file types: pdf, doc, docx, txt, rtf

LinkedIn Profile *

Are you currently eligible to work in the United States of America? * Select...

Do you now, or in the future, require visa sponsorship or transfer to continue working in the United States? * Select...

Are you open to a hybrid position if you live within 50 miles of a client location? * Select...