Senior Full Stack Engineer - Scala

Description :

Were looking for Full Stack Engineers with a backend focus who can help scale this mission-critical system. This is a complex, high-impact engineering role that goes far beyond CRUD apps youll work with recommendation engines, data pipelines, and distributed systems deeply integrated into our ad infrastructure.

Shifts : UK/US

What Youll Do :

- Build and maintain distributed backend services in Scala, leveraging ZIO, Akka, and functional programming for real-time personalization and recommendations

- Design and manage streaming pipelines using Akka Streams or ZIO Streams

- Work with large-scale Postgres datasets and multi-system data pipelines involving SQS, SNS, and Kinesis

- Partner with data scientists and product engineers to integrate recommendation logic into ad serving systems

- Occasionally contribute to our Angular front end and Lua-based ad server logic

- Deliver production-grade code with strong attention to scalability, observability, and maintainability

Must-Have Experience :

- Production-grade backend development in Scala, with deep understanding of functional programming principles (ZIO, Cats, etc.)

- Experience with distributed systems, asynchronous processing, and streaming architectures

- Proficiency in PostgreSQL and working with large-scale structured data

- Hands-on experience with message queueing and event streaming systems like SQS, SNS, or Kinesis

- Strong reasoning about user behavior, recommendation algorithms, and lifecycle event tracking

Nice to Have :

- Familiarity with the AWS ecosystem and Infrastructure-as-Code tools (Terraform, CDK, etc.)

- Experience with Angular and/or Lua

- Prior work in ad tech, real-time bidding systems, or recommendation engines