Senior Frontend Engineer (Product-Focused, High-Scale Fintech)

Reppls

Reppls

Software Engineering, Product

Ukraine

Posted on Apr 25, 2026

About the Role

We’re looking for a Senior Frontend Engineer to join a globally operating, product-driven fintech company that serves a large and active international user base.

This is not a typical frontend role. You will be working on high-scale, real-time, data-intensive applications where performance, reliability, and user experience directly impact business outcomes and user decisions.

The product operates in a consumer-facing, transaction-heavy environment, requiring strong engineering judgment, attention to detail, and the ability to build interfaces that handle complexity at scale.

You’ll collaborate closely with product managers, designers, and backend engineers to deliver intuitive, performant, and resilient user experiences.

What You’ll Do

  • Build and maintain modern frontend applications using React (primary) and TypeScript
  • Develop scalable, reusable UI components for complex, data-heavy interfaces
  • Work on real-time and performance-sensitive features where latency and UX matter
  • Translate product requirements into robust technical solutions with a strong focus on usability and performance
  • Collaborate cross-functionally with product, design, backend, and data teams
  • Participate in architectural decisions and drive frontend best practices
  • Continuously improve:
  • application performance
  • accessibility
  • overall user experience
  • Contribute to frontend standards, tooling, and engineering culture

What Makes This Role Different

  • You will work on a product with a large global user base and significant daily activity
  • The frontend is mission-critical, not just a presentation layer
  • You’ll deal with:
  • real-time data
  • high-load scenarios
  • complex user flows
  • Engineering decisions have direct business and financial impact
  • The environment is fast-paced, product-driven, and metrics-oriented

Minimum Qualifications

  • 5+ years of professional frontend development experience
  • Strong hands-on experience with React in production environments
  • Excellent knowledge of:
  • JavaScript
  • TypeScript
  • Solid understanding of:
  • HTML
  • CSS
  • modern frontend architecture
  • Proven experience building component-based, scalable frontend systems
  • Experience working on consumer-facing products with real users
  • Strong English communication skills (written and spoken)
  • Ability to work in a collaborative, cross-functional environment
  • High level of ownership and accountability

Preferred Qualifications

  • Experience with Next.js or similar frameworks
  • Familiarity with:
  • SSR
  • performance optimization
  • accessibility best practices
  • Experience working on:
  • high-load systems
  • data-rich interfaces (dashboards, charts, real-time UIs)
  • Experience contributing to or maintaining design systems
  • Background in fintech, trading platforms, marketplaces, or large-scale B2C products

Ideal Candidate Profile

We are specifically looking for engineers who have worked in:

  • Well-known, product-driven tech companies
  • Companies with large-scale user bases and real-world usage
  • Environments where frontend is critical to product success

You are likely a strong fit if you:

  • Think like a product engineer, not just a frontend developer
  • Have experience owning features end-to-end in a live product
  • Understand how frontend decisions affect performance, user behavior, and business metrics
  • Are comfortable working in fast-paced, high-impact environments

Why This Role

  • Work on a globally used product with real scale
  • Solve complex frontend challenges beyond standard CRUD apps
  • Be part of a product-focused engineering culture
  • Have direct impact on user experience and business performance