In-Demand Senior/software engineer (backend, java) Jobs in Sydney, Nsw

Client Full-Stack Engineer — IM Chat Platform, Android Focus
Binance —Sydney NSW
- Full-time
- Remote
- Management
- Computer Science
- Bachelor's degree
Quick Apply
8d
Engineering Lead/Manager, Risk (Relocate to Singapore)
Airwallex —Sydney NSW
- Full-time
- Management
- Computer Science
- Salesforce
Senior Software Engineer, App Analysis & Modelling
MongoDB —Sydney NSW
- Hybrid work
- Azure
- Computer Science
- SQL
- Parental leave

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Client Full-Stack Engineer — IM Chat Platform, Android Focus

Binance -
Sydney NSW

Quick Apply

Job Details

Full-time
8 days ago

Qualifications

CI/CD
Kotlin
Management
Computer Science
Software Engineering
iOS development
Full-stack development
Encryption
Slack
Git
Bachelor's degree
SDKs
GitHub
APIs
Security
AI
gRPC
Android development
Communication skills

Full Job Description

Binance is a leading global blockchain ecosystem behind the world’s largest cryptocurrency exchange by trading volume and registered users. We are trusted by 300+ million people in 100+ countries for our industry-leading security, user fund transparency, trading engine speed, deep liquidity, and an unmatched portfolio of digital-asset products. Binance offerings range from trading and finance to education, research, payments, institutional services, Web3 features, and more. We leverage the power of digital assets and blockchain to build an inclusive financial ecosystem to advance the freedom of money and improve financial access for people around the world.

Responsibilities

Design, develop, and maintain client-side applications for an instant messaging platform, with Android as the primary focus
Build core messaging features: real-time chat, group chat, media messaging, message sync, offline messaging, push notifications
Participate in client-side architecture design, ensuring consistent UX across Android, iOS, and Web
Use AI-powered tools (Cursor, GitHub Copilot, ChatGPT, Claude, etc.) to support cross-stack frontend development — read, debug, and modify iOS/Web codebases
Integrate RESTful APIs and WebSocket/MQTT/gRPC real-time communication protocols
Handle local storage, offline-first experience, message state management, and cross-platform sync logic
Optimize client performance: startup speed, memory, battery, network efficiency, UI responsiveness
Collaborate with backend teams on API design, integration, and production issue investigation
Senior level: mentor junior engineers, contribute to technical design decisions

Requirements

Bachelor's degree in Computer Science, Software Engineering, or a related discipline
Engineer: 1-3+ years of experience; Senior Engineer: 3-5+ years
Solid production experience in Android development (Kotlin and/or Java)
Good understanding of Android SDK, Jetpack components, asynchronous programming, and modern client-side architecture
Required: ability to use AI-powered development tools (Cursor, GitHub Copilot, ChatGPT, Claude, or similar) for cross-stack frontend development
Able to read, understand, debug, and make reasonable changes in iOS or Web codebases with AI tool support
Familiarity with WebSocket, MQTT, gRPC, or similar real-time communication protocols
Understanding of messaging concepts: message delivery, read status, sync, local persistence, offline support, push notifications
Good understanding of client-side performance optimization, memory management, multithreading, and security best practices
Familiar with Git, CI/CD pipelines, automated testing, and Agile processes
Strong debugging, problem-solving, ownership, and communication skills

Preferred Qualifications

Experience building IM products or communication platforms (WhatsApp, Telegram, WeChat, Discord, Slack, Messenger, etc.)
iOS development experience (Swift, SwiftUI, Objective-C)
Web frontend experience (TypeScript, React, Vue, Next.js)
Cross-platform client or mobile full-stack development experience
End-to-end encryption, message security, or cryptographic protocols experience
Voice/video calling or RTC technologies experience
Large-scale distributed messaging infrastructure experience
Fintech, payments, or Web3 applications experience
Open-source contributions or published apps on Google Play/App Store

Why Binance

Shape the future with the world’s leading blockchain ecosystem
Collaborate with world-class talent in a user-centric global organization with a flat structure
Tackle unique, fast-paced projects with autonomy in an innovative environment
Thrive in a results-driven workplace with opportunities for career growth and continuous learning
Competitive salary and company benefits
Work-from-home arrangement (the arrangement may vary depending on the work nature of the business team)

Binance is committed to being an equal opportunity employer. We believe that having a diverse workforce is fundamental to our success.

By submitting a job application, you confirm that you have read and agree to our Candidate Privacy Notice.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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senior/software engineer (backend, java) jobs in sydney, nsw

Client Full-Stack Engineer — IM Chat Platform, Android Focus

Engineering Lead/Manager, Risk (Relocate to Singapore)

Senior Software Engineer, App Analysis & Modelling

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