Senior Java Developer (ION)

Banco Santander SA; United States; On-site; USD 175,000 - 220,000; Full time

Job summary

Banco Santander SA is seeking a Senior Java Developer (ION) in the United States to lead multi‑initiative backend development and modernization efforts. You will mentor developers, architect scalable solutions, and drive high-quality, secure code across distributed systems.

The role requires 9+ years in Java backend, deep knowledge of Spring Boot/JPA, microservices, cloud concepts, and CI/CD pipelines. Strong problem solving and communication skills are essential for collaboration with

Qualifications

• 9+ years of hands-on application development experience with Java in a distributed system.
• Advanced proficiency in Java and Backend development.
• Experience with modern software paradigms including Spring Boot, Spring JPA and REST APIs.
• Knowledge of service-oriented and microservices architectures; cloud concepts.
• Familiarity with TDD, DDD, CI/CD pipelines, and SQL databases.
• Secure coding practices and high availability system design knowledge.
• Strong analytical, communication, and multitasking skills.
• Experience with AI tools and ongoing learning in tech standards.

Responsibilities

• Act as a senior hands-on developer across multiple complex application initiatives.
• Lead technical analysis, design, development, and maintenance of complex software applications and components.
• Provide advanced expertise in troubleshooting complex applications, system, and performance issues.
• Design, implement, and support system enhancements, refactoring, and modernization efforts.
• Research, evaluate, and implement solutions for performance monitoring, tuning, scalability, and system configuration.
• Drive the development and maintenance of automated test suites and quality assurance practices.
• Contribute significantly to technical design and architectural decisions for complex projects.
• Accurately estimate effort, identify technical risks, and help plan delivery milestones.
• Mentor and provide technical guidance to associate and mid-level developers.
• Partner closely with architects, product owners, and business stakeholders to achieve key objectives.
• Promote engineering best practices, code quality, and continuous improvement within the team.

Skills

Java

Distributed systems

Backend development

TDD

DDD

CI/CD (Jenkins)

SQL

Secure coding

System design

Cloud computing

AI tools

Education

Bachelor’s Degree

Tools

Spring Boot

Spring JPA

REST APIs

Jenkins

Job description

Senior Java Developer (ION)

Country: United States of America

It Starts With You: Santander is a global leader and innovator in the financial services industry and is evolving from a high-impact brand into a technology-driven organization. Our people are at the heart of this journey and together, we are driving a customer-centric transformation that values bold thinking, innovation, and the courage to challenge what’s possible. This is more than a strategic shift. It’s a chance for driven professionals to grow, learn, and make a real difference.

Senior Java Developer Role

• Act as a senior hands-on developer across multiple complex application initiatives.
• Lead technical analysis, design, development, and maintenance of complex software applications and components.
• Provide advanced expertise in troubleshooting complex applications, system, and performance issues.
• Design, implement, and support system enhancements, refactoring, and modernization efforts.
• Research, evaluate, and implement solutions for performance monitoring, tuning, scalability, and system configuration.
• Drive the development and maintenance of automated test suites and quality assurance practices.
• Contribute significantly to technical design and architectural decisions for complex projects.
• Accurately estimate effort, identify technical risks, and help plan delivery milestones.
• Mentor and provide technical guidance to associate and mid-level developers.
• Partner closely with architects, product owners, and business stakeholders to achieve key objectives.
• Promote engineering best practices, code quality, and continuous improvement within the team.

What You Bring

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Education

Bachelor’s Degree: in related field or equivalent demonstrated through a combination of work experience, training, military service, or education - Required Qualifications

Required Qualifications

• 9+ years of hands-on application development experience, with strong expertise in Java in a distributed system.
• Advanced proficiency in Java.
• Experience developing Backend.
• Proven expertise in modern software paradigms, including:
• Spring Boot, Spring JPA and Rest API’s
• Service-oriented and microservices architectures.
• Cloud computing concepts
• Test-driven development (TDD)
• Domain-driven design (DDD)
• Strong understanding of CI/CD pipelines using Jenkins.
• Strong SQL and relational database skills.
• Secure coding methodologies protecting against cyberthreats and prevents vulnerabilities.
• Demonstrated ability to design and troubleshoot large-scale, high-availability systems.
• Strong analytical, critical thinking, and problem-solving skills.
• Excellent written and verbal communication skills.
• Ability to manage multiple initiatives and context switch effectively.
• Ability to continuously evaluate existing systems and drive improvements.
• Use of AI tools.
• Commitment to maintaining industry knowledge, standards, and best practices.
• Curiosity and aptitude for adopting new technologies and collaborating to deliver custom solutions.
• Experience with performance-critical, scalable systems is highly desirable.

Preferred

• ION experience.
• Experience in Financial Services.

Certifications: No Certifications listed for this job.

It Would Be Nice For You To Have:

Established work history or equivalent demonstrated through a combination of work experience, training, military service, or education.

Work Authorization & Sponsorship

Applicants must be legally authorized to work in the United States on a full-time basis without requiring employer sponsorship to commence employment.

What Else You Need To Know

Base Pay Range: Minimum: $175,000.00 USD Maximum: $220,000.00 USD

We Value Your Impact

Your contribution matters and it’s recognized. You can expect a fair and competitive rewards package that reflects the impact you create and the value you deliver. We know rewards go beyond numbers. Offering more than just a paycheck our benefits are designed to support you, your family and your well-being, now and into the future.

Santander Benefits - 2026 Santander OnGoing/NH eGuide (foleon.com)

Risk Culture

We embrace a strong risk culture and all of our professionals at all levels are expected to take a proactive and responsible approach toward risk management.

EEO Statement

At Santander, we value and respect differences in our workforce. We actively encourage everyone to apply. Santander is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, genetics, disability, age, veteran status or any other characteristic protected by law.

Working Conditions

Frequent minimal physical effort such as sitting, standing and walking is required for this role. Depending on location, occasional moving and lifting light equipment and/or furniture may be required.

Employer Rights

This job description does not list all of the job duties of the job. You may be asked by your supervisors or managers to perform other duties. You may be evaluated in part based upon your performance of the tasks listed in this job description. The employer has the right to revise this job description at any time. This job description is not a contract for employment and either you or the employer may terminate your employment at any time for any reason.