The Lead Applications Development Specialist for Tax Technology is a senior individual contributor role responsible for the hands-on development, implementation, and enhancement of critical application systems focused on Tax withholding and Tax reporting. This position requires deep technical expertise in Java development, a strong understanding of application architecture, and comprehensive functional knowledge of tax regulatory and operational flows within a global financial institution. The successful candidate will drive technical solutions, ensure code quality, and mentor junior team members, serving as a key technical resource.

Responsibilities:

• Design, develop, test, and implement complex features and enhancements for Tax withholding and Tax reporting applications using Core Java, J2EE, and Spring Framework.

• Analyze complex business requirements related to Tax technology and translate them into robust, scalable, and maintainable technical solutions.

• Apply sound architectural principles and design patterns to ensure the maintainability, performance, and scalability of developed solutions within the existing enterprise architecture.

• Build and optimize high-performance, multi-user, multi-threading middleware components to support critical business processes and integrations.

• Develop and maintain RESTful API services, ensuring secure, efficient, and well-documented interfaces for internal and external consumption.

• Champion Test-Driven Development (TDD), write comprehensive unit and integration tests, and utilize mocking frameworks to ensure high code quality, reliability, and maintainability.

• Provide expert-level support for existing applications, identifying and resolving complex technical issues and performance bottlenecks.

• Mentor and guide junior developers, providing technical oversight, code reviews, and fostering adherence to best practices and coding standards.

• Design efficient database schemas, write optimized SQL queries, and perform performance tuning for application interactions with relational databases.

• Develop a deep understanding of Tax withholding and Tax reporting functional flows, collaborating closely with business analysts and product owners.

• Actively participate in all phases of the Agile development lifecycle, including sprint planning, daily stand-ups, and retrospectives.

• Ensure all developed solutions adhere to security standards, regulatory requirements, and internal Citi policies, particularly concerning sensitive tax data.

Qualifications:

• 8-10 years of hands-on experience in application development, with significant experience in a senior individual contributor role within financial services or a regulated environment.

• Expert-level proficiency in Core Java, J2EE, and the Spring Framework (Spring Boot, Spring Cloud, Spring Data).

• Extensive experience in server-side development and building complex middleware for multi-user, multi-threading applications.

• Proven track record of designing and implementing high-performance RESTful APIs.

• Experience with modern web technologies including HTML5, React, and JavaScript.

• Database design skills and expertise in writing and tuning complex SQL queries.

• In-depth experience with unit testing, mocking frameworks, and Test-Driven Development (TDD).

• Solid grasp of application architecture principles and design patterns.

• Demonstrated understanding of the functional flows and business processes related to Tax withholding and Tax reporting is highly advantageous.

• Strong experience working within Agile/Scrum development environments.

• Exceptional analytical and problem-solving skills, with the ability to debug and optimize complex systems.

• Excellent communication and collaboration skills, with the ability to articulate technical concepts clearly to both technical and non-technical stakeholders.

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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