Remote Full-Stack Developer (Kotlin/Java/React + AI Focus)

Job Description

Remote Full-Stack Developer (Kotlin/Java/React + AI Focus)

Scanz has been working for nearly two decades in the real-time trading technology and fintech space. We operate a market-leading SaaS platform that delivers complex technological systems for 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 trading software.

Job Description

We are seeking a versatile Full-Stack Developer with strong backend foundations to join our team and contribute across multiple areas of our platform, from server-side systems to billing infrastructure to desktop applications. This role is ideal for someone who thrives working across the stack and is passionate about leveraging AI tools and LLMs to accelerate development and build intelligent features.

You will primarily work with Kotlin/Java on the backend and TypeScript on the frontend, with significant exposure to our Electron desktop application and billing/accounts systems. A key aspect of this role involves pioneering our AI-first development practices, which consists of building AI-powered features for our users and establishing internal AI tooling and workflows.

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

Core Development (~50%)

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.

Maintain and enhance our user accounts backend APIs

Contribute to our Electron desktop application and common client libraries

Develop and maintain APIs, ensuring high performance and responsiveness

Contribute to database design and implementation (PostgreSQL)

Participate in code reviews and daily remote standups

AI & Innovation (~50%)

Champion AI-first development practices across the team

Build and maintain AI-powered features for our trading platform

Develop internal AI tooling: agents for documentation, architecture analysis, code assistance, and workflow automation

Experiment with and evaluate emerging LLM capabilities and integrate them into our development processes

Create and optimize prompts, context systems, and AI workflows

Help onboard team members to AI-assisted development practices

Requirements

Technical Skills

Strong proficiency in Kotlin and Java

Proficiency with TypeScript and modern frontend frameworks (React, Vue.js)

Experience with Electron or desktop application development (preferred)

Familiarity with Spring Webflux, reactive programming concepts

Experience with billing/payments systems (Stripe, subscription management) is a plus

Comfortable with database systems, particularly PostgreSQL

Experience with containerization technologies (Docker, Kubernetes)

Comfortable using AWS and cloud computing platforms

Solid understanding of testing practices (unit, integration, E2E)

AI & LLM Experience

Demonstrated experience using advanced AI development workflows

Experience with LLM APIs and prompt engineering

Experience building AI-powered features or agents

Enthusiasm for exploring and pushing the boundaries of AI-assisted development

Model fine tuning (nice to have)

RAG implementation (nice to have)

Soft Skills

Self-motivated and comfortable working across multiple domains

Strong problem-solving skills and ability to context-switch effectively

Excellent collaboration and communication skills within an asynchronous environment (Slack, Loom)

Willingness to learn new technologies and adapt quickly

Curious mindset with eagerness to experiment with emerging tools and approaches

Tech Stack

Backend

Kotlin, Java

Spring Webflux,Kotlin Coroutines

RSocket

PostgreSQL(mostly R2DBC or jooq), Mongodb

JUnit, TestContainers

Gradle

Express JS

Frontend & Desktop

TypeScript, React (with hooks), Vue.js

Electron

Kotlin Multiplatform

NPM, Gradle

Infrastructure

AWS + S3

Prometheus, Grafana

Jenkins, GitHub

Docker, Kubernetes

AI/LLM (Current & Expanding)

Claude API, OpenRouter

Braintrust for AI Ops

AI coding assistants

Vercel AI SDK

Internal tooling TBD (you'll help shape this)

Why This Role?

This isn't a typical backend position. You'll have the opportunity to work across our entire stack while playing a foundational role in how we integrate AI into both our product and our development practices. If you're excited about the rapidly evolving AI landscape and want to be at the forefront of applying these tools in a real-world fintech environment, we'd love to hear from you.