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Senior Software Developer - Client Tax

Job in Greenwich, Fairfield County, Connecticut, 06831, USA
Listing for: Interactive Brokers
Full Time position
Listed on 2026-07-03
Job specializations:
  • Software Development
    Backend Developer
Salary/Wage Range or Industry Benchmark: 90000 - 120000 USD Yearly USD 90000.00 120000.00 YEAR
Job Description & How to Apply Below

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

About Your Team

You will be joining the Client Tax (Tax Cust) group within the broader Client Tax Team. While the Client Tax Team covers a wide range of tax-related functions, Tax Cust 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 Tax Cust, 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
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Position Requirements
10+ Years work experience
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