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