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Scanz has been working for nearly two decades in real‑time trading technology and fintech. We deliver complex technological systems that enable serious traders worldwide. By joining Scanz you’ll become part of a company that fosters self‑improvement and actively seeks out‑of‑the‑box ideas. Our teams work together to create the next generation of financial software solutions. We welcome all candidates who believe that innovation is grounded in education.
Role Summary
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). Existing expertise in Kotlin is preferred, but a deep understanding of Java is acceptable if you are willing 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 system throughput and incorporate performance testing into our CI pipelines.
Scale services horizontally.
Contribute to weekly stand‑up.
Tech Stack
Back End
Kotlin
Spring Webflux
Ktor Server
Kotlin Coroutines
RSocket
Ktor Client
Kotlinx Serialization
Quartz
Kotest + JUnit
Gradle
Front End
Kotlin Multiplatform
React (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 across 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 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: unit, integration, E2E.
Readiness and desire to participate in code reviews.
Familiar with AI tools like Claude Code.
Offer
Work within a company with a solid track record of success.
Work alongside & learn from best‑in‑class talent.
Excellent career development opportunities.
Referrals increase your chances of interviewing at Scanz by 2x.
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