Senior Software Engineer (React)

Requirements:

• 5+ years of advanced frontend development, deeply specialized in React and modern JavaScript/TypeScript.
• Proven expertise in HTML5 Canvas API, animation frame management, and hardware-accelerated rendering.
• Extensive experience working with real-time data streaming (WebSockets, gRPC).
• Ability to translate complex financial and trading concepts into intuitive user interfaces.
• Familiarity with financial markets and basic trading concepts (e.g., order types, market depth, futures).
• Strong English (Upper-Intermediate/B2+) to communicate architectural decisions effectively.

Responsibilities: 

• Participate in designing and implementing live market depth panels, order flow visualizations, and interactive charts using HTML5 Canvas API and React.
• Collaborate with the core team to optimize rendering performance for real-time market data, ensuring a flawless 60fps+ experience while handling 100k+ data points without dropping frames.
• Prevent memory leaks in long-running applications and manage complex states using modern tooling.
• Establish frontend coding standards within your scope, conduct rigorous code reviews, and work closely with backend teams on data formats.

What we offer:

• Annual paid vacation of 18 working days.
• Extra vacation days for long-lasting cooperation.
• Annual paid sick leave of 10 days.
• Maternity/Paternity leave.
• The opportunity for sabbatical leave.
• Marriage and Parenthood Package.
• Compensation for sports activities or health insurance covering (up to 250$ per year) — after the trial period.
• Career development plan.
• English and Spanish classes.
• Paying taxes and managing PE (Private Entrepreneur).
• Technical equipment.
• Internal Referral program.
• Opportunity to take part in company volunteering activities.
• Sombra is a “Friendly to Veterans” award-holder.