Payments Java AWS Developer | Ampcus Inc. | Madison, Wisconsin, USA

Ampcus Inc.; Madison (WI); On-site; USD 120,000 - 160,000; Full time

Job summary

Ampcus Inc. is seeking a highly experienced Payments Java AWS Developer to support enterprise-scale payment processing platforms. This on-site contract role in Madison, WI requires deep expertise in payments systems, cloud-native development, and leadership of distributed teams.

The ideal candidate will design, develop, and enhance mission-critical payment solutions, leveraging Java, Spring Batch, and AWS to deliver scalable and secure transaction processing. Onsite collaboration is essential.

Qualifications

• Bachelor’s degree in a CS/IT/Engineering field is required.
• 12+ years IT experience with 10+ years in payments processing and cards technology.
• Strong Java expertise with Spring Batch and AWS cloud deployment in high-volume environments.

Responsibilities

• Design, develop, and maintain payment processing apps using Java.
• Lead implementations for ACH payments, card transactions, and tokenization.
• Architect scalable, secure cloud-native apps on AWS.
• Develop batch processing solutions with Spring Batch.
• Mentor onsite and offshore teams and contribute to Agile delivery.
• Create architecture documents and detailed technical specifications.
• Ensure security, performance, and regulatory compliance.

Skills

Payments processing

Java

Spring Batch

AWS Cloud

PostgreSQL

Team leadership

SDLC

Agile/Scrum

Education

Bachelor’s degree in Computer Science/IT/Engineering or related field

Tools

AWS

GCP

Docker

Kubernetes

Job description

Job Title: Payments Java AWS Developer | Ampcus Inc. | Madison, Wisconsin, USA

Recruiting Company: Ampcus Inc.

Job Location: Madison, Wisconsin, United States (Onsite)

Job Type: Contract (6+ Months)

Application Method: Send your updated resume to [e-mail]

Candidate Requirement: Local candidates currently residing in Madison, WI only

Experience Required: 12+ Years Overall Experience

Domain Expertise: Payments Processing, Banking & Cards Technology

Position Summary

Ampcus Inc. is seeking a highly experienced Payments Java AWS Developer to support enterprise-scale payment processing platforms serving critical financial transactions. This position is ideal for a senior technology professional with deep expertise in payments systems, cloud-native application development, and leadership experience managing distributed engineering teams.

Detailed Job Description

As a Payments Java AWS Developer, you will be responsible for designing, developing, and enhancing mission-critical payment processing applications within a modern cloud environment. You will work closely with business stakeholders, architects, and engineering teams to deliver high-performance, scalable, and secure payment solutions. The role requires extensive experience in payment ecosystems including ACH, credit card processing, tokenization, and transaction lifecycle management. The successful candidate will provide technical leadership across onsite and offshore teams while contributing to architecture design, development standards, and Agile delivery practices. This is an excellent opportunity to drive innovation within a complex financial technology environment.

Key Responsibilities

• Design, develop, and maintain enterprise-grade payment processing applications using Java technologies.
• Lead the implementation of solutions supporting ACH payments, card transactions, tokenization, and related payment services.
• Architect scalable and secure cloud-native applications leveraging AWS services.
• Develop and optimize batch processing solutions using Spring Batch.
• Collaborate with business, product, and technology teams to define technical requirements and solution designs.
• Provide technical leadership and mentorship to onsite and offshore development teams.
• Create and maintain architecture documentation, technical specifications, and solution blueprints.
• Design and optimize PostgreSQL database solutions for high-volume transaction processing.
• Ensure application security, performance, reliability, and regulatory compliance.
• Participate in Agile ceremonies including sprint planning, backlog refinement, and retrospectives.
• Troubleshoot production issues and perform root cause analysis for complex application challenges.
• Drive best practices across software development, cloud engineering, and DevOps processes.

Required Qualifications & Skills

• Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field.
• 12+ years of overall IT experience with at least 10+ years in payments processing and cards technology.
• Strong domain experience in Payments, ACH, Credit Cards, Tokenization, and transaction processing platforms.
• Advanced proficiency in Java application development.
• Extensive hands-on experience with Spring Batch.
• Experience developing and deploying applications on AWS cloud platforms.
• Strong expertise in PostgreSQL database design, development, and performance tuning.
• Proven experience leading distributed onsite-offshore development teams.
• Experience creating architecture documents and technical solution designs.
• Strong understanding of software development lifecycle (SDLC) methodologies.
• Experience working in Agile and Scrum environments.
• Excellent analytical, troubleshooting, and problem-solving skills.
• Strong stakeholder management and communication abilities.

Nice-to-Have Skills

• Experience with Google Cloud Platform (GCP) environments.
• Knowledge of payment industry standards, compliance, and security frameworks.
• Exposure to microservices architecture and API-driven platforms.
• Experience with CI/CD pipelines and DevOps practices.
• Familiarity with container technologies such as Docker and Kubernetes.
• Banking, financial services, or fintech industry experience.

Recruitment Pro Tip

For senior payment technology roles, hiring managers prioritize candidates who can demonstrate direct ownership of large-scale payment systems. Highlight specific ACH, card processing, tokenization, modernization, or cloud migration projects, including transaction volumes, system performance improvements, team leadership responsibilities, and measurable business outcomes achieved through your technical contributions.