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Principal Software Engineer - Equity Trading at Fidelity in Galway: Lead design & development of high-quality trading platform.
Drive innovative solutions, mentor juniors, and champion engineering excellence in a top 25 program.
The Role
As a Principal Software Engineer on the Equity Trading Technology team, you will have the opportunity to lead the design and development of high-quality software for sophisticated trading products. You will help build complex new trading capabilities to expand and enhance the common trading platform used across multiple asset classes within Fidelity’s Asset Management business unit. The trading platform is at the heart of one of the 2026 Top 25 programs across Fidelity, with high visibility at senior leadership levels. We are looking for an experienced Software Engineer with a passion for delivering innovative products and services to help build and support this critical platform!
You will help design, build and support mission-critical enterprise software applications.
You will define product solutions by working directly with business and product teams.
You will provide mentorship and guidance to junior developers to help them grow in their careers.
You will actively promote good engineering practices and standards.
You will keep abreast of the latest engineering trends and practices and bring them back to the team when appropriate.
You will work with the team to continuously improve our software engineering craft.
The Expertise and Skills You Bring
- Degree or equivalent in Computer Science, Engineering or a related discipline
- 8+ years of experience in designing, developing and testing backend services using Java and Spring Boot
- Experience in developing event driven applications using JMS or Kafka (preferred)
- Expertise with test automation frameworks that support all types of testing (unit, component, integration, end to end, regression, etc.) and integrating those tests during the CI/CD process when appropriate
- Experience working with Relational Databases (Oracle & PL/SQL preferred)
- Familiarity with cloud service providers such as Amazon Web Services (preferred), Google Cloud Platform or Microsoft Azure
- Financial services experience, particularly exposure to FinTech protocols such as Financial Information eXchange (FIX)
- Strong domain knowledge of Trading and Trading technologies is an advantage.
- Strong technical design, development, analysis and problem-solving skills.
- Excellent verbal and written communication skills
The Team
Our Equity Trading Technology organization is dedicated to empowering investment professionals with world-class tools and platforms that enable exceptional performance. We partner closely with one of the largest buy‑side trading desks globally, delivering innovative solutions through deep collaboration between business and technology. Together, we strive to deliver superior outcomes for our customers and maintain our position as an industry leader