Software Engineer, UI (Angular/ RxJS/ ReactJS)

Top 3 reasons to join us

• Empowered Employees
• Freedom and Flexibility
• Unlimited Growth

Job description

Our UI is the mission-critical window into Grasshopper’s high frequency trading and risk management engines. As a UI Software Engineer, you will be responsible for building and scaling real-time web interfaces that process tens of millions of messages daily. This isn't just a dashboard; it is a high-throughput monitoring and execution tool where every millisecond and every pixel matters. You will ensure our traders and risk managers have a robust, low-latency, and highly reliable view of the markets to make split-second decisions that directly impact our trading performance.

As a key member of the UI Engineering Team, you’ll:

• Develop and optimise high-performance, real-time web applications using Angular and RxJS
• Architect systems capable of handling massive data streams (10M+ messages/day) without compromising UI responsiveness or stability
• Work closely with traders and risk managers to translate complex financial requirements into intuitive, robust interactive tools
• Write clean, testable, and highly performant code with a deep focus on memory management and execution efficiency
• Collaborate with backend engineering teams to define efficient data schemas and streaming protocols
• Maintain a high bar for attention to detail, recognising that UI errors can have direct financial consequences in a live trading environment

Your skills and experience

We’d love for you to have:

• At least 3+ years of experience in professional software development with a focus on modern frontend frameworks
• Deeply familiarity with reactive programming patterns, state management and managing complex data flows in high-frequency environments with Angular/RxJS or React
• Exceptional understanding of computer science fundamentals, including algorithms, data structures, and asynchronous programming
• Experience in profiling and optimising web applications (e.g., minimising change detection cycles, managing memory leaks, optimising bundle sizes).
• Strong experience with TypeScript, Unit Testing and CI/CD pipelines
• A track record of solving complex technical challenges with creative, scalable solutions

Nice to haves:

• Familiarity with financial markets, trading concepts, or risk management systems
• Knowledge of low-latency communication protocols
• Experience with data visualisation libraries (e.g., D3.js, Chart.js) for real-time charting
• Basic understanding of backend languages like C++, Rust, or Python

Why you'll love working here

• 15 days annual leave
• Bao Viet health insurance for employee and direct family
• 100% salary in probation time
• Annual Dental & Wellness budget
• Annual salary review
• Competitive Compensation
• Training trips to Singapore
• Annual company trip in 5 stars hotel (domestic and oversea)