Software Engineer, UI/UX

Schonfeld•New York, NY

11h•$175,000 - $195,000

About The Position

We’re looking for a UI Engineer to join our team and play a critical role in building and shaping the firm’s internal UI platform. This is a high-impact, hands-on engineering position where you’ll contribute not just as a front-end specialist, but also as a platform strategist – helping to evolve our UI infrastructure powering 100+ business applications across the firm. You’ll work in a dynamic, fast-paced environment where product requirements evolve, and business stakeholders are deeply engaged. Your engineering skills, UX sensibility, and product mindset will all be utilized as you craft industry-leading UI platform and ecosystems. You’ll be a key contributor to our UI platform and a technical partner to product owners building on top of it. You’ll help evolve our technical stack and development tools by contributing to architectural improvements, shared components, and implementation consistency across cross-functional teams. At the same time, you’ll work closely with product teams and business stakeholders, helping shape feature definitions, and building high-impact UI solutions directly into their applications. Your development responsibilities will span full-stack, including web front-end, backend integration, API design, performance optimization, and system observability. You’ll also be involved in the team’s code quality and best practices, mentor junior engineers, identify gaps in development lifecycles, and continuously improve both the core platform and how developers build with it.

Requirements

3-5 years of professional experience in front-end engineering
Expertise in React, TypeScript, HTML, CSS and modern web development toolkits
Experience working with REST APIs, WebSockets, and event-driven architectures
Strong familiarity with common enterprise JavaScript frameworks, such as Redux, Zustand, RxJS, D3, AgGrid or Highcharts
Experience working with both relational (Postgres, MySQL) and NoSQL databases (MongoDB, DynamoDB)
Expertise with low-latency, distributed caches such as Redis or Memcached
Proficiency in writing unit tests and E2E tests utilizing popular frameworks like RTL, Mocha, Jest, Cypress, Playwright
A track record of developing data-intensive, scalable applications with strong usability and performance
A thoughtful approach to problem-solving; Ability to break down complex issues methodically

Nice To Haves

Experience in building internal tools for trading, analytics, or compliance in Finance or Fintech businesses
Experience with AWS cloud services (EC2), Kubernetes-driven deployments, and modern CI/CD pipelines
Experience designing and operating high-throughput, event-driven data pipelines on Apache Kafka or Apache Spark
Experience implementing or maintaining design systems
Familiarity with React-based micro-frontend architectures and patterns for building modular UI
Proficiency in one or more backend languages such as Go, Python, Java, Rust
Excellent communication skills; Able to translate technical concepts for non-technical stakeholders

Responsibilities

Contribute to the UI platform and act as a technical partner to product owners.
Evolve the technical stack and development tools by contributing to architectural improvements, shared components, and implementation consistency.
Work closely with product teams and business stakeholders to shape feature definitions and build high-impact UI solutions.
Span full-stack development, including web front-end, backend integration, API design, performance optimization, and system observability.
Be involved in the team’s code quality and best practices.
Mentor junior engineers.
Identify gaps in development lifecycles.
Continuously improve the core platform and how developers build with it.