As a Senior Software Engineer on the Billing engineering team at Apex Fintech Solutions, you will design, develop, and maintain high-quality software solutions for complex financial workflows, including microservices for billing calculations, rates, settlement, and charge services using Java. Your day-to-day responsibilities include implementing rate configurations, optimizing performance-critical code paths with PostgreSQL and jOOQ, writing comprehensive tests, collaborating on technical designs, debugging production issues with Datadog, and contributing to API design with gRPC and Protobuf. The role requires expertise in Java or Python, experience with automated testing frameworks like Bazel, CI/CD pipelines, cloud platforms such as AWS or GCP, and SQL for database optimization. You will work on large-scale financial calculations and integrations with external systems, ensuring efficient data processing and system reliability in a fast-paced entrepreneurial environment.
Design and implement microservices for the billing platform using Java.
Ensure end-to-end delivery of features from design to deployment in production.
Optimize performance-critical code paths for high-volume financial operations.
Write comprehensive tests and maintain high test coverage across various testing types.
Debug and resolve production issues, leveraging monitoring tools like Datadog.
Contribute to technical improvements and best practices within the team.
What we're looking for
5+ years of software development experience with proficiency in Java and Python.
Design, develop, and maintain microservices for billing platforms using PostgreSQL and jOOQ.
Implement CI/CD pipelines and automate build, test, and deployment processes.
Write comprehensive tests and ensure high code quality across various testing frameworks.
Experience with cloud platforms (AWS, Azure, GCP) and SQL database optimization.
Market check
Salary context
This listing doesn't show a salary. Similar roles on FindRole typically pay
$117,000–$203,940.
Peer median band
$117,000–$203,940
Median floor and ceiling across peers.
Typical midpoint (25–75%)
$139,000–$175,500
Middle half of comparable postings.
Based on 240 comparable postings.*
* 240 is the maximum number of comparable postings sampled.
Employer
About Apex
Apex Fintech Solutions provides brokerage infrastructure and clearing services to financial services companies, enabling them to deliver investing, trading, and retirement solutions to their customers. Industry: Financial Technology & Brokerage Infrastructure
Apex currently has
34 open roles
on FindRole.
Listed pay typically runs
$129,200–$161,500
across 10 roles with salary data.