Software Engineer II (Cost Basis and Tax)

About this Role Apex is seeking a talented Software Engineer II to join our industry-leading Cost Basis and Tax technology team. You'll be working on mission-critical systems that process billions of transactions and generate millions of tax forms annually for major broker-dealers across the financial services industry. Our platform is recognized as the industry standard for robustness, scalability, performance, and accuracy. This role offers the opportunity to work on some of the most technically challenging problems in financial technology. Duties/Responsibilities Design, develop, and maintain features for our Cost Basis and Tax calculation systems using Java and Jakarta EE standards. Implement complex business logic for cost basis and tax processing. Work with large-scale data processing systems handling billions of transactions. Collaborate with cross‑functional teams including Operations and Business teams to understand and implement requirements for new data scenarios. Optimize application performance and scalability to handle significant data explosion inherent in cost basis and tax calculations. Participate in code reviews and contribute to technical documentation. Support production issues and participate in on‑call rotation as needed. Contribute to our cloud agnostic initiatives (AWS and GCP). Education and/or Experience Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent work experience) required. 3+ years of software development experience. Required Skills / Abilities Strong proficiency in Java development with Jakarta EE (formerly Java EE) standards. Familiarity with enterprise messaging systems (JMS). Understanding of JDBC and database performance optimization. Strong problem‑solving skills and attention to detail. Excellent communication skills and ability to work in a collaborative environment. Other Preferred Qualifications Experience with WildFly application server. Knowledge of QueryDSL or similar database abstraction layers. Experience with Apache MQ or similar message brokers. Familiarity with financial services, particularly cost basis or tax calculations. Experience with cloud platforms (AWS or GCP). Experience with high-volume data processing systems. Knowledge of modern UI frameworks (React, Angular). Work Environment This job operates in a hybrid office environment 3 days per week. Our Rewards We offer a robust package of employee perks and benefits, including healthcare benefits (medical, dental and vision, EAP), competitive PTO, 401k match, parental leave, and HSA contribution match. We also provide our employees with a paid subscription to the Calm app. We offer generous external learning and tuition reimbursement benefits. At Apex, we offer a hybrid work schedule for most roles that allows employees to have the flexibility of working from home and one of our primary offices. EEO Statement Apex Fintech Solutions is an equal opportunity employer that does not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, veteran status, marital status, or any other protected characteristic. Our hiring practices ensure that all qualified applicants receive fair consideration without regard to these characteristics. Disability Statement Apex Fintech Solutions is committed to creating an inclusive and accessible workplace for all candidates, including those with disabilities. We are dedicated to ensuring equal employment opportunities and providing reasonable accommodations to qualified individuals with disabilities. If you require reasonable accommodations to participate in the application or interview process, please submit your request via the Candidate Accommodation Requests Form. We will work with you to provide the necessary accommodations to ensure your full participation in our hiring process. #J-18808-Ljbffr Apex Fintech Solutions UK Ltd.