Java Mainframe Developer

Ascendion is an AI-native software engineering disruptor helping businesses innovate faster, smarter, and with greater impact. We partner with enterprise clients across North America, the UK, Europe, and APAC to solve complex challenges in data, experience design, software product engineering, and workforce transformation. Powered by expert engineers, thousands of AI agents, and our Engineering to the Power of AI (Engineering AI) method, we deliver measurable outcomes that build trust, unlock value, and accelerate growth.
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Engineering to the Power of AI™, AAVA™, Engineering AI , Engineering to Elevate Life™, Enterprise Platforms AI , Data & Insights AI , Experience AI , GCC AI , Operations AI , Platform Engineering AI , Product AI , and Quality Engineering AI are trademarks or service marks of Ascendion ® . AAVA™ is pending registration. Unauthorized use is strictly prohibited.

We have a culture built on opportunity, inclusion, and a spirit of partnership. Come, change the world with us:

• Build the coolest tech for the world’s leading brands
• Experience the power of transforming digital engineering for Fortune 500 clients
• Master your craft with leading training programs and hands‑on experience

Experience a community of change makers!

Join a culture of high-performing innovators with endless ideas and a passion for tech. Our culture is the fabric of our company, and it is what makes us unique and diverse. The way we share ideas, learning, experiences, successes, and joy allows everyone to be their best at Ascendion.

• Build the coolest tech for the world’s leading brands
• Solve complex problems – and learn new skills
• Experience the power of transforming digital engineering for Fortune 500 clients
• Master your craft with leading training programs and hands‑on experience

Seeking an experienced Mainframe & Java Developer with 10+ years of experience in development, production support, and troubleshooting. AWS integration and legacy modernization experience are highly preferred. This is a 100% onsite role in Jersey City, NJ.

• Develop, maintain, and enhance Mainframe and Java applications.
• Provide production support and troubleshoot complex technical issues.
• Integrate applications with AWS services and support modernization initiatives.
• Collaborate with cross-functional teams to ensure application stability and performance.

• 10+ years of overall IT development experience.
• Strong hands‑on experience in Mainframe development.
• Strong hands‑on experience in Java development.
• Production support and troubleshooting experience; must work 100% onsite in Jersey City, NJ.

The annual [salary/hourly rate] for this position is between $120,000 - $150,000 annually. Factors which may affect pay within this range may include geography/market, skills, education, experience and other qualifications of the successful candidate.

• [medical insurance]
• [dental insurance]
• [vision insurance]
• [401(k) retirement plan]
• [life insurance]
• [long‑term disability insurance]
• [short‑term disability insurance]
• [paid parking/public transportation]
• [xx days/hours of paid time off]
• [xx days/hours of paid sick and safe time]
• [xx days/hours of paid vacation time]
• [xx weeks of paid parental leave]
• [x paid holidays annually]
• [add others as needed- include all material benefits available to the position]

Ascendion is a full-service digital engineering solutions company. We make and manage software platforms and products that power growth and deliver captivating experiences to consumers and employees.

Our engineering, cloud, data, experience design, and talent solution capabilities accelerate transformation and impact for enterprise clients. Headquartered in New Jersey, our workforce of 6,000+ Ascenders delivers solutions from around the globe. Ascendion is built differently to engineer the next.