Middleware Engineer
The client is an innovative global fintech leader behind USDT, the world’s largest and most widely used stablecoin. This role focuses on building high performance, intuitive mobile applications that integrate crypto wallet and DeFi functionality. You will work in a fast-paced environment alongside senior backend engineers, product managers and leadership to deliver secure cross-platform wallet experiences for a global audience.
About Vacancy
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Key Requirements
- 5+ years of experience in fullstack software development
- Expert-level proficiency in JavaScript and TypeScript
- Strong experience with React (web, mobile, or desktop)
- Experience building offline-first or local-storage-heavy applications (e.g. SQLite)
- Proven experience with distributed systems or event-driven architectures
- Strong understanding of real-time communication (WebSockets, streaming, RPC)
- Solid knowledge of networking, security, and production best practices
- Experience with databases, data modeling, and performance optimization
- Hands-on experience with containerization and orchestration (Docker, Kubernetes)
- Ability to work independently and communicate effectively in a remote environment
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Your Responsibilities
- Design, build, and maintain React-based applications (Expo / React Native / Electron)
- Develop clean, modular architectures using TypeScript across the stack
- Implement local-first / offline-first application logic and secure local data storage
- Integrate applications with local AI inference engines, SDKs, and real-time systems
- Work with REST APIs, WebSockets, RPC, and streaming data flows
- Contribute to middleware, SDKs, and JavaScript bindings bridging apps with native and C++ components
- Build or extend native mobile modules (iOS / Android) when required
- Optimize performance for resource-constrained devices
- Write production-quality code with unit and end-to-end tests
- Collaborate in a fully remote, cross-time-zone team
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We Offer
- Transparent strategy and thoughtful management that keep everyone aligned
- Space for personal growth and career development without limits
- A culture of continuous learning: internal courses, workshops, and English classes twice a week
- Skill up events where we share experience and stay on top of trends
- Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
- Team spirit that thrives through regular events, gatherings, and celebrations
Why Join Us?
Financial Rewards
- Compensation within the market
- Compensation review
- Bonus systems for specific teams
Employment Benefits
- Paid leaves
- Public holidays
- Referral bonus
- English lessons
Career Development
- Internal trenings
- Pluralsight
- Promotion opportunities
- PDP
Work Environment
- Flexible working hours
- No internal trackers
- Work-life balance
- Team building
- Workspace design
- Provide/reimburse the equipment cost
- Management environment
Want to Achieve Your Goals? Book Your Call Now!
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Thank You for Your Application!
We have successfully received your CV and appreciate your interest in joining Devox Software. Our recruitment team is currently reviewing all applications. If your qualifications align with our needs, we will reach out to you within the next 5-7 business days.
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