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Senior Software Developer - Client Tax

Greenwich, CT Posted Jun 30, 2026
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About the job

This is Hybrid role (3 days in office / 2 day remote)

About Your Team

You will be joining the Client Tax (TaxCust) group within the broader Client Tax Team. While the Client Tax Team covers a wide range of tax-related functions, TaxCust is specifically focused on the development and maintenance of the systems that power our client-facing tax operations. Our core responsibilities include:

Maintaining and continuously improving the enterprise brokerage tax form collection and reporting system

Maintaining and improving the Oracle data models and XML schemas that underpin our tax data architecture

Maintaining and improving the Java-based processing and reporting programs that drive our tax workflows

We are a technically focused team operating at the intersection of financial services and enterprise software engineering, building and evolving mission-critical systems that serve clients at scale.

Your Role

As a new member of TaxCust, you will take on meaningful technical ownership from day one. Over your first two years, your responsibilities will include:

Maintaining and improving the enterprise brokerage tax form collection and reporting system

Maintaining and improving related Oracle data models and XML schemas

Maintaining and improving processing and reporting Java programs

Extracting technical requirements from business specifications for the tax form collection and reporting system

Planning and implementing end-to-end system improvements across the full technology stack

Analyzing and resolving production incidents, ensuring system stability and reliability

Analyzing resource usage and scalability bottlenecks and implementing targeted improvements

Planning and implementing a transition from a bulk processing model to an event-based processing architecture

This is a highly impactful role where your contributions will directly shape the reliability, scalability, and evolution of a core enterprise platform.

Must-Have Skills

Strong database knowledge and experience, including data modeling and design

Experience working with large-scale data repositories

Strong object-oriented software development skills, with hands-on experience in Java, Spring, and REST APIs

Demonstrated ability to extract technical specifications from business requirements

Proven ability to plan, implement, and lead complex software projects from inception to delivery

Detail-oriented and quality-focused mindset with a commitment to engineering excellence

Nice-to-Have Skills

Familiarity with US and international tax regulations and reporting requirements

Knowledge of or experience with IRS tax forms (W-8, W-9) and IRS tax reporting (1099)

Knowledge of or experience with CRS (Common Reporting Standard) tax reporting

Company Benefits & Perks

Competitive salary, annual performance-based bonus and stock grant

Retirement plan 401(k) with competitive company match

Excellent health and wellness benefits, including medical, dental, and vision benefits. Company paid medical healthcare premium.

Wellness screenings and assessments, health coaches and counseling services through an Employee Assistance Program (EAP)

Daily company lunch allowance provided and a fully stocked kitchen with healthy options for breakfast and snacks

Corporate events including team outings, dinners, volunteer activities and company sports teams

Education reimbursement and learning opportunities

Verith pulls this listing from Interactive Brokers's careers page or job board and checks it several times a day. Apply on their site.