The Role:
We are seeking an expert-level Backend Developer to join our dynamic team and contribute to the development of robust, scalable server-side applications and data pipelines. You will primarily work with Spring Webflux and Kotlin (and Java). Although existing expertise in Kotlin is preferred, a deep understanding of Java is acceptable if there's a willingness to adapt and transition quickly.
Scanz is a leading SaaS Trader Terminal that provides a suite of real-time trading tools to help traders and investors identify live trading opportunities in the US stock market. We are dedicated to offering our users – from trading pros to absolute beginners – an intuitive and efficient trading experience.
Responsibilities:
* Design and implement server-side logic using Spring Webflux and Kotlin.
* Build robust, reliable, fault-tolerant data pipelines that process millions of operations daily.
* Collaborate with front-end developers to integrate user-facing elements with server-side logic.
* Develop and maintain APIs, ensuring high performance and responsiveness.
* Contribute to database design and implementation (PostgreSQL).
* Improve the system's throughput and incorporate performance testing into our CI pipelines.
* Scale services horizontally.
* Contribute to weekly standup.
Back End Tech Stack:
* Kotlin
* Spring Webflux
* Ktor Server
* Kotlin Coroutines
* RSocket
* Ktor Client
* Kotlinx Serialization
* Quartz
* Kotest + JUnit
* Gradle
Front End Tech Stack:
* Kotlin Multiplatform
* React (with hooks)
* SharedWorker
* TypeScript
* NPM
* Gradle
Infrastructure:
* AWS + S3
* Prometheus
* Grafana
* Jenkins
* Github
Ideal Profile:
* Strong proficiency in Kotlin / Java.
* Proficiency with Kotlin coroutines (flows).
* Proficiency with Spring Webflux and Reactive Streams back pressure.
* Self-motivated developer comfortable working as a core member on an A-list team of backend and frontend developers split over different time zones.
* Strong problem-solving and analytical skills.
* Excellent collaboration and communication skills within an asynchronous environment (Slack, Loom).
* Deep-level understanding of distributed systems and how to make fault-tolerant applications.
* Experience with containerization technologies (Kubernetes, Docker).
* Strong familiarity with database systems, particularly PostgreSQL.
* Comfortable using AWS and cloud computing platforms.
* Solid understanding of the testing pyramid, specifically unit, integration, and E2E tests.
* Readiness and desire to participate in code reviews.
* Familiar with AI tools like Claude Code.
What's on Offer?
* Work within a company with a solid track record of success
* Work alongside & learn from best in class talent
* Excellent career development opportunities