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Eastern Europe

  • Build pixel-accurate, responsive interfaces from Figma using React, TypeScript, and Material UI.
  • Own features end-to-end from design handoff through testing, deployment, and iteration.
  • Drive frontend quality standards with testing across unit, integration, and e2e layers.

React TypeScript CSS3

20 jobs similar to Senior Frontend Engineer (Contractor)

Jobs ranked by similarity.

Eastern Europe

  • Design and implement high-quality, scalable, reusable front-end components.
  • Collaborate with UX/UI designers and back-end developers to ensure technical feasibility and seamless integration.
  • Optimize applications for speed, scalability, responsiveness, and cross-browser compatibility.

A digital product engineering company that builds products, services, and experiences across all devices and digital mediums. They have 18,000+ experts across 39 countries and a dynamic, non-hierarchical work culture.

  • Build and maintain a React/TypeScript frontend at real scale, owning complex UI components for route search, filtering, and map visualization.
  • Work closely with backend engineers on API contracts, integrate third-party tools like Auth0 and PostHog, and maintain high performance standards.
  • Ship via GitHub Actions CI/CD pipelines and participate in architecture and UX decisions with genuine self-direction.

Routescanner is the world's leading container logistics intelligence platform, helping shippers and freight forwarders optimize intermodal container routes. They are a growing, lean, senior team focused on clean code and high trust without micromanagement.

North America

  • Strengthen frontend foundations built on React, TypeScript, and Vite infrastructure.
  • Improve developer efficiency through automation, static analysis, and LLM tools.
  • Optimize testing platform and CI/CD pipelines for fast feedback and stable deploys.

Mercury is a fintech company that provides banking services through partner banks. The company is growing rapidly and values diversity, belonging, and equal opportunity.

Global

  • Build new product features using React, TypeScript, and the TanStack ecosystem.
  • Develop reusable, accessible UI components using a shared design system.
  • Improve application performance through code splitting, rendering optimisation, and modern React best practices.

Serverless Guru LLC is a technology company that builds modern, scalable web applications using cloud-native technologies. The company emphasizes engineering excellence, maintainability, and collaborative cross-functional teams.

US Unlimited PTO

  • Own and evolve the frontend platform strategy including shared architecture, design systems, and developer tooling.
  • Lead major platform initiatives such as framework upgrades, mobile modernization, and technical migrations.
  • Improve developer experience through reusable tools, templates, automation, and workflows that increase engineering productivity.

Jobgether uses an AI-powered matching process to connect candidates with hiring companies. They operate as a technology-focused platform with a mission-driven culture centered on innovation and collaboration.

Brazil

  • Develop and maintain scalable, high-performance frontend applications using React and Next.js.
  • Collaborate with Product, Design, and Backend teams to deliver seamless and user-friendly experiences.
  • Integrate APIs and backend services into frontend applications and ensure responsive design and accessibility.

Sigma Software is a software engineering company that partners with global clients to deliver innovative projects at the intersection of FinTech and AI. The company values engineering excellence, collaboration, and continuous growth in a supportive international environment.

Canada 4w PTO

  • Partner with Product, Design, and Engineering to define and deliver new AI Receptionist capabilities.
  • Design and build modern, responsive web applications using React and TypeScript.
  • Optimize application performance, accessibility, and reliability across enterprise-scale deployments.

Cresta unlocks the true potential of customer experience by turning every conversation into a competitive advantage. Born from the Stanford AI Lab, Cresta has raised over $270 million from leading investors including a16z, Greylock, and Sequoia.

Slovakia

  • Develop and maintain frontend applications using React and TypeScript hosted on AWS cloud
  • Integrate frontend applications with existing REST APIs
  • Work with Telekom's shared React UI library and reusable UI components

Deutsche Telekom IT Solutions Slovakia provides innovative information and communication technology services. It has grown to the second largest employer in eastern Slovakia with more than 3900 employees.

$97,000–$125,000/yr
US

  • Design, develop, and enhance modern web applications using React, TypeScript, and related front-end technologies.
  • Collaborate with cross-functional teams including developers, architects, UX designers, and business stakeholders to deliver scalable solutions.
  • Diagnose and resolve application defects, performance issues, and production support requests.

We calm the confusion of IT by guiding the connection between people and technology, helping customers manage inventory, equip workforce, or secure data. Our team is built on diverse backgrounds and perspectives, fostering innovation and collaboration.

$100,000–$150,000/yr
US

  • Build and own the consumer-facing web app in React, TypeScript, and Next.js.
  • Lean on AI tooling to ship quickly and help make it better as you go.
  • Be fanatical about testing assumptions and judging work by outcomes, with AI speeding you up but not thinking for you.

Cedar helps families achieve homeownership with a proven model that is now scaling. The company values results over hours, straight feedback, and root-cause problem solving, with a small, sharp team.

Germany

  • Design and develop scalable, high-performance frontend applications using React and TypeScript.
  • Co-own frontend architecture, including component design, state management, and performance optimization.
  • Collaborate with product, design, and backend teams to deliver intuitive, user-centric experiences.

Our partner is an AI-powered observability platform that helps developers manage massive data volumes. They are a remote-first company with a collaborative engineering culture and a focus on innovation.

$109,500–$146,000/yr
Canada

  • Build mobile-responsive user interfaces with React and TypeScript, shipping high-quality code from day one.
  • Own frontend architecture decisions, including component design, state management, and performance optimization.
  • Set frontend engineering standards and mentor other engineers on best practices, code quality, and reusable component design.

Hiive is redefining how private companies and their shareholders access liquidity. Recognized as one of Canada's fastest-growing companies and backed by leading U.S. investors, Hiive is profitable and building a high-performance team.

Global

  • Build modern dashboard UI with React and TypeScript, shipping features for Canvas-based Generative AI pipelines and integrating with async WebSockets.
  • Ensure performance with large media datasets and shape UX decisions, not just implement specs.
  • Define data contracts with Backend and implement drag-and-drop interfaces, undo/redo, and real-time preview.

SplitMetrics is a global software company offering an ecosystem of products and services that serve as a growth engine for top mobile-first businesses worldwide. With nearly 10 years of experience, they work with top mobile companies and brands globally, generating over $1 billion in ad spend and fostering a remote-first, supportive culture across 20+ countries.

Global

  • Build and ship frontend features across Vue, Angular, and React codebases.
  • Design and implement software solutions in collaboration with product, design, and backend engineering.
  • Take ownership of features end to end: design, build, test, deploy, and monitor in production.

Okendo is a customer marketing platform that helps Shopify brands turn one-time shoppers into repeat customers. Trusted by 16,000+ brands, we value one team, customer championing, excellence, ownership, integrity, and always day one.

UK 6w PTO

  • Drive the technical direction of the frontend application stack.
  • Work hands-on with TypeScript and Rust to build real-time trading interfaces.
  • Own code quality and team development through review and mentorship.

Reactive Markets is a leading provider of over-the-counter trading platforms for FX, Equities, and Cryptocurrency, handling over $50 billion in daily trading volumes. The company has a small, senior engineering team focused on building cutting-edge, high-performance trading systems.

Czech Republic

  • Facilitate effective communication with client stakeholders and craft high-quality, scalable code using React, TypeScript, and Node.js.
  • Actively participate in agile development, mentoring team members, and driving project delivery from concept to deployment.
  • Engage with engineering communities to share knowledge and support the growth of technical capabilities.

3Pillar Global is a software development company that partners with clients to build digital products and transform industries. The company fosters a global, remote-first culture with a focus on well-being, diversity, and professional growth.

Global

  • Implement end-to-end user journeys across the full stack, including administrative and core platform flows such as tenancy, user management, and permissions.
  • Rapidly prototype new flows, validate assumptions, and iteratively harden them into production-quality implementations.
  • Review, refine, and integrate AI-generated code, ensuring correctness, performance, and maintainability.

Gradera defines a new category of enterprise transformation called Software-Orchestrated Services™, where software orchestrates human expertise, digital workers, and enterprise systems. As an AI Native Services firm, they help enterprises redesign work across operations, product, engineering, customer experience, data, and enterprise workflows.

  • Design, develop, and maintain scalable frontend applications and reusable UI components using React and Next.js.
  • Build responsive, accessible, and high-performance user interfaces for digital commerce experiences.
  • Collaborate closely with Product, UX, Backend Engineering, and Platform teams to deliver end-to-end customer experiences.

Applaudo is an AI-native organization that designs, builds, and scales meaningful, AI-powered solutions to create real business impact. They collaborate across design, development, cloud, data, and artificial intelligence to turn ideas into scalable products.

Europe

  • Shape the future of our Retail Media platform by building modern frontend experiences across campaign management, advertiser self-service, and other AdTech products.
  • Own end-to-end frontend delivery while collaborating closely with backend engineers to integrate scalable APIs and deliver high-quality user experiences.
  • Create complex web applications including reporting, asset management, permissions, audience segments, wallet integrations, and CRM metadata integrations.

Redcare Pharmacy is Europe's No.1 e-pharmacy, providing online pharmacy services and healthcare products. The company fosters a healthy, collaborative work environment where employees are valued and inspired to contribute to the vision of health for every human.

Global

  • Build and maintain scalable, high-quality web applications using React, TypeScript, and Next.js.
  • Collaborate cross-functionally with Product, Design, Backend, and AI teams to deliver intuitive user experiences.
  • Integrate APIs and AI-powered features, and leverage AI tools to improve productivity and software quality.

LumiMeds is a fast-growing U.S.-based telehealth startup focused on weight management and long-term metabolic health. It is an early-stage, remote-first, globally distributed team that values clarity, accountability, and initiative.