Senior Software Engineer, Data

About Us 

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. 

The Role

We are seeking a hands-on Senior Software Engineer to lead development and implementation of data products within our Data group and partner with one of our four main scrum teams and will be exposed to projects involving distribution, bond calculations, quantitative analysis, and market leading data products. 

The individual will have the opportunity to leverage our extensive global proprietary data assets and work closely with leading developers, architects, and product management within the fixed-income fintech space. 

How You'll Help Take Us There

• Data Distribution Platform (File/API/Stream):
  • Build and enhance scalable and resilient next gen Data Distribution capabilities across various channels.
  • Use Apache Flink (or equivalent) to process batch and real-time data streams for delivery.
  • Develop a robust API platform to efficiently onboard and expose sub-second APIs (REST/GraphQL).
  • Deploy and manage client-facing real-time data feeds (FIX/Kafka). 

• Data Product Development:
  • Design, develop and implement data products across our hybrid environment in Java/Python.
  • Build and maintain scalable real-time and batch ingestion and processing pipelines (e.g. Kafka).
  • Collaborate closely with Data Scientists and Product Strategists to productionize innovative revenue-generating data products.  

• Cloud & Big Data Infrastructure:
  • Design and maintain AWS-based data products (S3, ECS/EKS, Athena/Glue/Aurora) with a focus on containerized and serverless technologies.
  • Optimize data storage (partitioning, bucketing) for performance.
  • Ensure data security, cost efficiency, and best practices (IAM, encryption, monitoring).  

• Software Engineering & CI/CD:
  • Implement automated build/test/deploy pipelines (Jenkins, GitLab CI/CD, or equivalent).
  • Enforce coding standards: modular design, documentation, peer reviews, and automated testing (unit/integration).
  • Instrument pipelines with monitoring and alerting (CloudWatch, Grafana).  

• Cross-Functional Collaboration:
  • Act as a liaison between Development, Product, Research, Platform and Infrastructure teams.
  • Present technical designs and progress to stakeholders.
  • Mentor junior engineers on data-engineering best practices and streaming architectures.  

What We’re Looking for  

• 6+ years of enterprise software development experience
• BS/MS degree in Computer Science, Engineering or a related subject
• Outstanding Core Java skills, multi-threading experience and Spring Boot knowledge
• Understanding of object-oriented design patterns
• Experience using Apache Flink for batch and stream processing
• Experience building API (GraphQL, Rest, RPC) and working on streaming platforms like Kafka, JMS, etc.
• Experience building, deploying and maintaining containerized applications
• Working experience in AWS cloud native services and Enterprise or cloud-based DBMS such as Postgres, Oracle and SQL Server
• Good to have experience with AWS architectures (e.g. ECS, EKS, S3, EC2, etc) and Infrastructure-as-Code (e.g. CloudFormation or Terraform)
• Good to have experience with technologies like AirFlow, Python, NumPy/Pandas/Polars
• Strong mathematical aptitude
• A passion for collaboration and strong relationship building skills
• Interest in financial markets
• Top-notch problem resolution skills
• Strong written, verbal, and team communications skills. 

What You Can Expect from Us