Senior Full Stack Engineer (Backend-Focused)-Scala

Job Title: Senior Full Stack Engineer (Backend-Focused)(Scala)

Mode : Work from Office

Shifts: UK/US

Exp : 3 - 6 years

Salary: Best in the Industry

About the Role: 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.

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