Remote Kotlin / Java Backend Developer

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\u2019s a willingness to adapt and transition quickly., * 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\u2019s 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

• GradleInfrastructure :

• AWS + S3

• Prometheus

• Grafana

• Jenkins

• Github

• 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.

• Work within a company with a solid track record of success
• Work alongside & learn from best in class talent
• Excellent career development opportunities", "url": "https://uk.talent.com/view?id=813c91d0a8ee", "occupationalCategory": "15-1252.00", "datePosted": "2025-10-15", "employmentType": "FULL_TIME", "hiringOrganization": {"@type": "Organization", "name": "Scanz", "logo": "https://cdn-logos.talent.com/v1/logo/image?feedcode=snaphunt-ats&company_name=Scanz"}, "jobLocation": {"@type": "Place", "address": {"@type": "PostalAddress", "addressCountry": "gb", "addressRegion": "", "addressLocality": "", "streetAddress": ""}, "geo": {"@type": "GeoCoordinates", "longitude": -3.435973, "latitude": 55.378051}}, "jobLocationType": "TELECOMMUTE", "applicantLocationRequirements": {"@type": "Country", "name": "gb"}, "industry": "", "identifier": {"@type": "PropertyValue", "name": "Scanz", "value"

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.