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

Scanz

Sobre la empresa

Vacantes Disponibles

Remote Kotlin / Java Backend Developer