Machine Learning Engineer

Posted 6 Days Ago
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Hiring Remotely in Melbourne, Victoria
Remote
Hybrid
Senior level
Fintech • Payments • Software • Financial Services
Afterpay is a people-powered movement to change the way we pay. Shop now, pay later.
The Role
As a Senior Machine Learning Engineer in the Fraud Risk team, you'll develop scalable systems and tools, integrate ML and software solutions, and collaborate with cross-functional teams to enhance user experiences while ensuring financial risk management for Afterpay. You'll also mentor junior engineers and drive initiatives for innovation.
Summary Generated by Built In

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 50+ 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
The Role
Marketplace under Cash App provides different payment products such as BNPL (Buy Now, Pay Later) or pay monthly to customers. The Fraud Risk team is responsible for building scalable systems that power our modellers and decision scientists to develop & deploy ML-based strategies to battle fraudsters to ensure the health of the business. In addition, we build end-to-end customer experience for risk assessments.
As a member of the team, you will work as a Full Stack Engineer, utilising your AWS and Kubernetes experience to help develop the next generation of automation tools within the risk domain. Your contributions will play a key role in driving initiatives aimed at building scalable and robust solutions. This is an exciting opportunity to make a direct, tangible impact on our product and work on projects that are pivotal to the business's success.
You WIll

  • Develop highly scalable systems, algorithms, and tools on one platform to support software solutions
  • Develop, integrate, and optimize ML and software systems
  • Demonstrate rigor in high code quality, good test coverage, and other engineering best practices
  • Collaborate with product, analysts, and modelers on planning and implementing frictionless user experiences
  • Have autonomy to research and achieve outcomes with support when you need it
  • Contribute to the growth of our development capabilities through leading, mentoring, and supporting fellow engineers
  • Responsible for designing, building, and owning the services and infrastructure that manage Afterpay's financial risk
  • Work where you like, in any AU Cash App office location or remotely in Australia.


You Have

  • 6+ 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++
  • Enthusiastic about solving business problems with technology and can take ownership of an end-to-end solution
  • Passionate 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 DevOps (AWS / Kubernetes / CICD) experience is a bonus
  • 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 That We Use and Teach

  • Python, Java, Kotlin, Javascript
  • Onnx/PyTorch, LightGBM/XGBoost
  • Kubernetes, AWS
  • Datadog, Buildkite
  • Hibernate, MySQL, Cassandra DB, DynamoDB
  • HTTP, JSON, gRPC, Protocol Buffers
  • Kafka, Temporal, event-driven microservice architecture


We're working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is a proud equal opportunity employer. We work hard to evaluate all employees and job applicants consistently, without regard to identity or other legally protected class.
We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible. Want to learn more about what we're doing to build a workplace that is fair and square? Check out our I+D page.
Block is a globally distributed company and this role will require working with other employees in multiple time zones. You may be required to perform work outside of normal business as part of this role.
Every benefit we offer is designed with one goal: empowering you to do the best work of your career while building the life you want. Check out benefits at Block.
Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, and TIDAL, we build tools to help more people access the economy. Square helps sellers run and grow their businesses with its integrated ecosystem of commerce solutions, business software, and banking services. With Cash App, anyone can easily send, spend, or invest their money in stocks or Bitcoin. Spiral (formerly Square Crypto) builds and funds free, open-source Bitcoin projects. Artists use TIDAL to help them succeed as entrepreneurs and connect more deeply with fans. TBD is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.

Top Skills

C++
Go
Java
JavaScript
Kotlin
Python
Ruby
Swift

What the Team is Saying

Angel Lopez
Naomi Domkam
Alison Meyer
Jose Picado
Sunil Parekh
Han Qin
Kiersten Abueg
The Company
Melbourne, Victoria
900 Employees
Hybrid Workplace
Year Founded: 2015

What We Do

We started a movement in which everyone can win – shoppers, retailers, society and every person on our team. To play fair, trust people and reward them for doing the right thing. We see and feel the impact of our work as more and more people gain financial freedom and retailers grow across the globe.

Founded seven years ago in Sydney, Australia, Afterpay has millions of active customers globally and is offered at the world’s best retailers around the world including Anthropologie, Revolve, DSW, GOAT, Finish Line, Levi’s, Mac Cosmetics, Ray-Ban and many others. Afterpay is on a mission to power an economy in which everyone wins.

Why Work With Us

We’re not trendsetters, we’re change makers. We follow through, we show up, and we make it happen, fast. We are uncomplicated people, who are not scared of the complicated. There’s no time to be just another bystander when you’re on our team, if you’ve got something to say, we want to hear it.

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