Senior Software Engineer - Java, Banking/Payments

Senior Software Engineer

PortX is a leading AI-powered data and integration company for modern banking, bringing systems together and data to life through our unified platform for modern integration, governed customer 360 data, and next-generation payments.

We're in strong growth mode, with new opportunities for Senior Software Engineers, working in a high-impact environment that's open and rewarding, so it's a great time to join.

Day to day responsibilities include:

• Hands-on development for PortX customer integration projects.
• Build and enhance APIs, backend services, and integration components across modern banking and payments environments.
• Design, develop, test, and maintain high-quality solutions for PortX customer integration projects.
• Use modern AI tools responsibly to accelerate engineering productivity, code quality, testing, and documentation.
• Troubleshoot, diagnose, and resolve customer-reported technical issues in a timely manner, including root cause analysis and permanent fixes where appropriate.
• Participate in architectural and technical design discussions, helping define robust, secure, and maintainable solutions.
• Contribute to deployment, configuration, and operational support processes across cloud-based environments, primarily AWS.
• Write clean, maintainable, well-tested code and contribute to continuous improvement of engineering standards, tooling, and development practices.
• Collaborate with cross-functional teams to improve system performance, reliability, observability, and scalability.
• Create and maintain technical documentation relating to implementations, integrations, troubleshooting, and support handover.

Required skills:

• Strong Java development experience, as main programming language
• Hands on experience with containerization
• Enterprise integration and implementation experience: APIs, event-driven architecture, integration platforms/iPaaS
• Experience with consuming web services, REST and SOAP based architecture
• Hands on experience with Spring Boot framework
• Hands on experience with deploying to AWS platform
• Hands on experience with GIT
• Hands on experience with Maven
• Demonstrated hands-on expertise with AI developer tools (e.g., GitHub Copilot, GPT-powered coding assistants, automated test writers etc.
  

Preferred skills:

• Banking, credit union, or payments domain experience (core banking systems, digital banking, ACH/ISO 20022).
• Hands on experience with integration framework, such as Apache Camel
• Demonstrated technical architectural design capability from past projects

This is a chance to join a fast-growing company at the forefront of AI-powered banking integration and data innovation. You will work in a collaborative, high-impact environment where your technical expertise directly influences business growth and customer success.

At this stage, ownership isn't a talking point - it's the job. You'll drive your space end to end, which means your time and availability flex with what the work actually needs, not a fixed clock. If that type of environment is energizing rather than exhausting, you'll thrive here.

PortX Principles

• Do Everything with Purpose
• Challenge the Ordinary
• Check your Ego at the Door

Benefits

• Competitive compensation: attractive equity opportunities at a venture-backed startup
• High Impact Role: Have a direct and immediate impact on revenue & scaling the business
• Insurance (medical, dental, vision)
• 401(k)
• Unlimited PTO
• Be a part of a collaborative and highly motivated team culture where your voice is heard and you're not just a number in a big company

US Citizenship required - No Visa Sponsorship available