Software Engineer, Data

MarketAxess•New York, NY

1d•Hybrid

About The Position

MarketAxess is on a journey to digitally transform one of the world’s largest financial markets, enabling the shift from analog, phone-based trading to a fully electronic marketplace. Why does this matter? Because our platform makes trading fixed-income more accessible, ultimately improving transparency, efficiency, and competition in the marketplace. Changing the way an established industry transacts is no easy feat. There will be twists and turns, because no one’s ever done this before. But now, more than 2,000 clients around the world rely on our solutions, and that number is only expected to grow in the years ahead. We know where we’re going. How we get there is up to us. Join us and help Take Us There. We are seeking a Software Engineer to join our Reference Data team and help modernize how we manage and deliver critical data for Fixed Income trading. This role focuses on building robust data engineering solutions, implementing Master Data Management and Golden Source strategies, tracking data lineage, and enabling efficient data wrangling and analysis. You’ll work with modern technologies, collaborate across teams, and gain deep exposure to the Fixed Income domain—even if you’re new to it. Intellectual curiosity, problem-solving skills, and a “can-do” attitude will be key to success.

Requirements

4+ years of software engineering experience.
Strong skills in Python, SQL, and Java; familiarity with Spring Boot and object-oriented design principles.
Experience building REST APIs, asynchronous programming, and concurrency.
Exposure to streaming platforms (Kafka, JMS) and cloud environments (AWS preferred).
Familiarity with Python data libraries (Pandas, Polars, NumPy) for data wrangling and analysis.
Understanding of database concepts (data warehouse, data lake) and data lineage.
Experience with CI/CD tools and practices; Unix and scripting highly beneficial.
Ability to use AI tools effectively in development workflows.
Strong problem-solving skills, intellectual curiosity, and a collaborative mindset.
Interest in financial markets and willingness to learn the Fixed Income domain.

Responsibilities

Develop and maintain data pipelines for ingestion, transformation, and distribution using Python, SQL, and Java.
Build and expose REST APIs for data services; implement asynchronous programming and concurrency for high-performance systems.
Work with streaming technologies like Kafka and JMS for real-time data delivery.
Utilize Python libraries such as Pandas, Polars, and NumPy for data wrangling and analysis.
Contribute to building Master Data Management and Golden Source solutions.
Support data lineage tracking and ensure data integrity across systems.
Work with database concepts such as data warehouses and data lakes.
Design and maintain AWS-based data products (e.g., S3, ECS/EKS, Athena, Glue, Aurora) with a focus on containerized and serverless technologies.
Optimize data storage (partitioning, bucketing) for performance and cost efficiency.
Ensure data security and best practices (IAM, encryption, monitoring).
Implement automated build/test/deploy pipelines (e.g., Jenkins, GitLab CI/CD).
Enforce coding standards: modular design, documentation, peer reviews, and automated testing (unit/integration).
Instrument pipelines with monitoring and alerting (e.g., CloudWatch, Grafana).
Work closely with Development, Product, and Infrastructure teams.
Use AI tools effectively (e.g., GitHub Copilot) to accelerate development and improve productivity.
Demonstrate intellectual curiosity and eagerness to learn the Fixed Income data domain.

Benefits

Hybrid Environment: Our employees enjoy a mix of working in the office and from home
Free Food: We provide free lunch for employees when they are working in the office. Plus, our offices are stocked with snacks
Paid Time Off: Competitive PTO package including vacation and personal days, sick leave and charity days
Generous Parental Leave: Up to 20 weeks fully paid leave
401(k): Dollar-for-dollar employer match up to $17,500
Employee Stock Purchase Plan: Employees can purchase MarketAxess common stock at a discount
Wellness Stipend: We provide employees with up to $1K annually towards gym memberships, home office equipment and more
Onsite Healthcare: We offer convenient access to world-class care through Mount Sinai at our Hudson Yards location
Tuition Assistance and Professional Development: Benefit from live and on-demand learning, role-specific training, employee-led Lunch and Learns and guest speakers
Core benefits: Highly competitive medical, dental, and vision programs