Senior Machine Learning Engineer
3 weeks ago
Company Description
It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 47 million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible.
Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy.
Check out our locations, benefits, and more at
Job Description
The Underwriting & Credit organization's mission is to redefine credit and liquidity through simple, fair, and accessible credit solutions that build financial health and resilience. This team builds and integrates ML solutions for evaluating customer cash flow risk including risk of default on credit obligations, risk of fraud & abuse of loans and other situations where Cash App advances funds or provides liquidity to customers. We support multiple products in Cash.
As a member of the ML systems engineering team, you will work very closely with ML Modelers and Decision Scientists to integrate and productize credit risk models. The Underwriting systems engineering team is the main interface between the world of ML and product engineering, and as such your work will include everything from backend engineering, developing data pipelines, to creating features, and working with rules engines. We build our services over Cash App's ever-evolving infrastructure, and as a senior engineer on the team, you will embrace these changes and scale our tech stack to promote future evolvability. This is an exciting opportunity to make a direct, tangible impact on our product and work on projects that are critical to the business's success. You'll be reporting to an Engineering Manager and working on a distributed team with members in the USA and Canada.
You will:
- Be responsible for designing, building and managing the distributed services and pipelines for Underwriting & Credit Cash App
- Lead impactful, multi-person projects that cross Engineering team boundaries
- Demonstrate high code quality, good test coverage and other engineering best practices
- Collaborate with product, analysts, and modelers on planning and implementing frictionless user experiences
- Work cross-functionally with product, platform, security, and data engineering teams to unlock new machine learning applications
- Have autonomy to research and achieve outcomes with support when you need it
- Creatively solve challenging technical problems at scale
- Contribute to the growth of our development capabilities through mentoring and supporting fellow engineers
Qualifications
You have:
- 8+ years of backend software development experience in building and maintaining applications in any mainstream language such as: Java, JavaScript, Python, Kotlin, Ruby, Go, Swift, C++
- Enthusiasm about solving business problems with technology and proven experience successfully taking ownership of an end-to-end solution
- Passion about continuously learning new technologies, frameworks, and services
- Possess an execution mindset and the ability to deliver with cross-functional teams that are globally distributed
- Serious about testing and have experience with automated testing frameworks
- Passion for Cash App's mission of economic empowerment
- Experience of ML model-related experience is a bonus
- Experience with common technologies, for example, Kafka, Redis, Cassandra is a bonus
- A keen interest in advancing Cash App's vision of building for economic empowerment
Tools we use and teach:
- Python, Java, Kotlin
- Kubernetes, AWS
- Datadog, SumoLogic
- Hibernate, MySQL, Cassandra DB, DynamoDB
- HTTP, JSON, gRPC, Protocol Buffers
- Kafka, event-driven microservice architecture
Qualifications
You have:
- 8+ years of backend software development experience in building and maintaining applications in any mainstream language such as: Java, JavaScript, Python, Kotlin, Ruby, Go, Swift, C++
- Enthusiasm about solving business problems with technology and proven experience successfully taking ownership of an end-to-end solution
- Passion about continuously learning new technologies, frameworks, and services
- Possess an execution mindset and the ability to deliver with cross-functional teams that are globally distributed
- Serious about testing and have experience with automated testing frameworks
- Passion for Cash App's mission of economic empowerment
- Experience of ML model-related experience is a bonus
- Experience with common technologies, for example, Kafka, Redis, Cassandra is a bonus
- A keen interest in advancing Cash App's vision of building for economic empowerment
Tools we use and teach:
- Python, Java, Kotlin
- Kubernetes, AWS
- Datadog, SumoLogic
- Hibernate, MySQL, Cassandra DB, DynamoDB
- HTTP, JSON, gRPC, Protocol Buffers
- Kafka, event-driven microservice architecture
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