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We are looking for a talented and creative Mobile OS Research Developer to join us in combating online fraud. In this role, you'll play a key part in identifying and neutralizing sophisticated fraudsters in real-time, at a large scale, for some of the world's largest enterprises. This role requires responsibility, creative thinking, and a can-do attitude to solving problems with non-trivial constraints - this is not a brute force hacking/reversing type role.
What you'll be doing:
Collaborate with a team of passionate researchers to solve modern digital intelligence challenges and uncover groundbreaking discoveries together.
Research the internals of different mobile OSs, find lesser-known APIs, understand upcoming features, and design innovative solutions to leverage them in our products.
Develop code for both iOS and Android within our SDK using ObjC/Swift and Java/Kotlin.
Extract powerful data from the device while being extra careful about safety (zero crashes), and performance (battery, network, etc.).
Take ownership of the entire data flow process from concept to implementation, collaborating closely with analysts and engineers to ensure seamless integration.
Deliver and publish SDKs to production which will be used by thousands of merchants to interact with tens of millions of users each day.

We are looking for a Senior Software Engineer to join our Decision Engineering team. The group is responsible for the real-time, low-latency infrastructure that powers our fraud decisions and external APIs.
Our systems process billions of requests every day, ensuring high availability, security, and performance at global scale.
In this role, youll work on core backend components such as our decision engine, ingestion and enrichment pipelines, schema management systems, and self-serve API platform. The software you build will power critical business decisions and directly serve some of the worlds largest merchants.
This is a high-impact, high-ownership position for an engineer who thrives on solving complex distributed systems challenges, cares deeply about production-grade quality, and wants to shape the foundation of our decisioning platform.
What you'll be doing:
Design, build, and scale backend systems that power our real-time decisioning and APIs.
Own projects end-to-end - from design and implementation to production rollout and monitoring.
Ensure systems are low-latency, fault-tolerant, and high-throughput across distributed environments.
Enhance observability, reliability, and developer experience through strong operational and tooling practices.
Collaborate with Product, analysts, data scientists, and infrastructure teams to drive innovation across our decision ecosystem.
Participate in technical discussions and customer interactions, providing expertise and clear communication when supporting enterprise integrations.

We're looking for a talented Senior Software Engineer to join the Identity Data team. The team is in charge of the critical data pipeline that processes and aggregates the huge quantity of events that, over time, build our identity data corpus.
Why should you join us?
The Identity Data team is the place for those who are passionate about data and scale.
We handle >2B person entities stored jointly in various database engines to support different fetching requirements, while processing >200k events per second
The team provides services to all decisions, generating some of the most critical model inputs
We are one of the major contributors to our decision latency and cloud expense, and as such we are always improving our engines, reducing cost and latency, and have the organizational credit to make high-risk / high-reward investments in cutting edge technologies
If you are up for the challenge of being in one of the most critical teams in the organization, which holds part of the secret sauce of our success, we are the place for you!
What you'll be doing:
Have a key part in improving the systems helping us prevent fraud for our merchants by identifying millions of decisions a day
Design, build, and maintain Near-real-time data pipelines
Take initiative: A large portion of the work are initiatives are pushed by the engineers
Work in a rich ecosystem of storage and data technologies, to name a few: Elasticsearch, Aerospike, Spark, Redis, RocksDB, S3, Snowflake and many more
Provide software solutions to complicated challenges we face on a daily basis.

We are looking for a highly motivated and experienced Senior Software Engineer to join the Engine Dynamics team and help tackle some foundational challenges in how our Decision Engine evolves, scales, and maintains its reliability and agility over time.
The role is most suitable for backend engineers who love the business of software building, and are passionate about the complex and delicate process of making big systems simpler. Its all about tackling the challenges of running truly big software in production, and is suitable for engineers who can operate well in high and low abstraction levels.
About the team:
Where ideas drive innovation, complexity is the main friction that slows ideas from becoming reality - and thus our biggest productivity challenge.
The Engine Dynamics team owns the insight-to-production experience for our Decision Engine. This means looking at the engine development process as a product, and making strategic changes to how we develop features in it, either analytical or product-offering features. It means reducing complexity, improving confidence, reducing production faults and reducing the mental burden shared by all engine development teams. It requires understanding our core business well, and knowing what a good development experience looks like.
What you'll be doing:
Analyze, debug and remodel the structure of our decision engine in a way that will streamline work and reduce toil
Remove bottlenecks so engineering and analytics teams can focus on building high-impact work for our decision engine and shipping it faster.
Own key parts of our engine, including validation, fault detection, and developer tools
Improve the journey from insight to production by treating our development process as a flagship product we genuinely care about.
Make production more reliable so production issues stay rare even as the system grows and more contributors join.