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  • Developing data-visualisation applications and new features for displaying large process data effectively.
  • Building interfaces and real-time frontend services for multi-user editing and AI model retraining.
  • Owning projects end-to-end, participating in architectural decisions, and improving team processes.

React JavaScript System Design Performance Optimization

20 jobs similar to Software Engineer

Jobs ranked by similarity.

India

  • Own the frontend architecture: state, data fetching, routing, module boundaries, and build tooling across ~690K lines of TypeScript/React.
  • Drive performance as a measurable metric, reducing bundle size and improving user experience with concrete targets.
  • Mentor engineers and shape a codebase safe for coding agents, with typed boundaries, lint rules, and fast feedback loops.

We're building the AI agents that run insurance — a trillion-dollar industry still powered by manual work. We've raised $30M+ from top investors, grown 10x in the last 12 months, and work with Fortune 100 companies.

  • Build and evolve our frontend application serving as the primary interface for AI model training, inference execution, and results exploration.
  • Develop rich interactive map-based visualizations for displaying detection results, segmentation masks, and training data coverage across large geographic areas.
  • Design intuitive workflows for complex geospatial operations to put AI capabilities into the hands of analysts.

Blackshark.ai provides a scalable AI platform that enables custom model training on global features, delivering real-time geospatial insights. Founded in 2020, the company has raised $35 million in Series A funding from investors including Microsoft M12 and Point72 Ventures.

US

  • Shape the end-to-end user experience of the Hypori Console by gathering feedback from stakeholders and defining efficient interaction patterns.
  • Lead front-end architecture for the Console, including component structure, state management, and build tooling, while staying fluent in backend services.
  • Deliver features end-to-end from UI through REST APIs in a microservices environment deployed on Kubernetes, with a focus on accessibility and security.

Hypori, Inc. is a high-growth cybersecurity SaaS company transforming secure mobility with a virtual workspace platform that lets users access enterprise apps and data from any mobile device without storing data on the endpoint and ensuring total personal privacy. Backed by $55M in funding from investors including UBS, AE Industrial Partners, Hale Capital Partners, and GreatPoint Ventures, it is expanding into new commercial and regulated markets.

Global

  • Design, build, and maintain high-performance web applications using React and TypeScript.
  • Improve client-side performance, code reusability, testing coverage, and WCAG accessibility standards.
  • Collaborate with UX Designers and backend engineers to define API contracts and deliver cutting-edge features.

SimSpace is an AI Proving Ground that unifies training, testing, and validation in realistic, live-fire simulations for organizations worldwide. Founded in 2015 by experts from U.S. Cyber Command and MIT Lincoln Laboratory, the company fosters a culture of continuous learning, curiosity, and professional growth.

Australia New Zealand

  • Build and ship high-quality product UI for Creative Fabrica Studio using React and TypeScript.
  • Own complex frontend features end-to-end, from architecture and implementation to polish and production follow-through.
  • Obsess over performance and partner with design to make the Studio feel fast, polished, and delightful.

Creative Fabrica is a subscription platform serving millions of creators, designers, and crafters worldwide, with a library of 15+ million licensed assets and 26+ AI tools. The company is built on the belief that everyone can be creative, fostering a culture of innovation, inclusion, and diversity.

Global

  • Own features from design to release, spot UX gaps early, and ship core value first.
  • Partner with Product to analyze feasibility, document requirements, and estimate timelines.
  • Empower the team through prompt PR reviews, pair programming, and AI-assisted workflows.

Europe

  • Build engaging, high-performing eInstant gaming platforms for a European gaming technology initiative.
  • Use React.js, Next.js, TypeScript, and Tailwind CSS to deliver innovative real-money gaming solutions.
  • Collaborate within cross-functional teams, applying TDD with Vitest and Cypress for reliable software.

Software Mind develops impactful software solutions for global companies, collaborating with tech giants and unicorns on transformative projects. The culture embraces openness, respect, grit, and combines delivering results with enjoyment.

Europe

  • Develop new user-facing features and create reusable UI components and frontend libraries.
  • Translate complex Figma designs into responsive, accessible CSS/JavaScript implementations.
  • Optimize applications for performance, scalability, reliability, and maintainability.

The company builds high-performing web applications using modern frontend technologies like React and TypeScript. It operates as a fast-moving, collaborative startup-style environment with a focus on quality and performance.

$71,500–$82,500/yr
France

  • Design and develop full-stack features using React, TypeScript, and backend languages like Java or Node.js.
  • Drive architectural decisions, backlog grooming, and technical leadership while leveraging AI coding assistants.
  • Write automated tests, conduct code reviews, and deploy features in production using GitLab, AWS, and Kubernetes.

CoderPad is the global leader in the technical interview space, serving over 4,000 customers in 165+ countries. The company has a remote-first, distributed culture with teams in EMEA and US, focusing on building and scaling products for technical interviews.

US

  • Lead frontend architecture, including component design, state management, and performance for React and TypeScript interfaces.
  • Build and extend Python APIs and collaborate on data contracts, API design, and integration patterns.
  • Drive frontend standards, mentor engineers, and support internal tooling for operations and compliance.

Astra builds mission-critical infrastructure for moving money at scale, processing billions annually with 99.9%+ uptime. They are a remote-first, small, high-output team focused on collaboration and professional growth.

Global

  • Develop new user-facing features using React.js and build reusable components.
  • Optimize components for maximum performance across various devices and browsers.
  • Collaborate with product and back-end teams to define and implement innovative solutions.

This company is hiring a frontend engineer to develop user interfaces. The company culture is not described in the posting, but it emphasizes a team-oriented mindset and equal opportunity employment.

  • Translate Figma designs into modular React or Angular code.
  • Integrate frontend components with backend IoT APIs and real-time data streams.
  • Develop component and integration tests while maintaining UI quality.

We are an IT consulting and services company supporting international customers with innovative IT solutions. We have over 400 employees in 6 subsidiaries and focus on honesty, development, and continuous learning.

India

  • Own the architecture of the platform UI, including the application shell, module federation topology, shared component library, and build tooling.
  • Define and enforce performance metrics, accessibility standards, and release strategies across the front-end ecosystem.
  • Provide technical leadership through design proposals, code reviews, and mentorship of senior and mid-level engineers.

HighLevel is an AI-powered business operating system for SMBs, providing infrastructure to build and scale across 150+ countries. With over 2,000 team members across 10+ countries, we operate as a global, remote-first organization built for speed, ownership, and people-first culture.

UK 6w PTO

  • Be accountable for the performance of two distributed engineering squads, setting clear expectations, coaching, and developing each team member.
  • Own hiring and team planning across both squads, aligning capacity with product priorities and long-term needs.
  • Lead discovery with squads, engage with customers and community, and shape roadmaps using feedback and evidence.

Grafana Labs is the company behind Grafana Cloud, a fully managed observability platform trusted by more than 10,000 organizations. They are a 100% remote company with team members across 40+ countries, backed by leading investors.

$170,000–$190,000/yr
US

  • Develop first-class React/TypeScript web applications for EEG analysis and clinical study management.
  • Design and implement UX workflows for clinical study management, data analytics, and patient diagnostics.
  • Own the user experience, performance, reliability, and observability of web apps, leveraging user feedback.

Beacon Biosignals is transforming precision medicine for the brain, from clinical development to clinical care. We offer at-home EEG platforms for life sciences partners and precision diagnostics for sleep and CNS disorders. Our small, mission-driven team values diversity and leads by example.

Global

  • Design and build production-grade user interfaces for cybersecurity and data-intensive platforms, translating design specifications into responsive web applications.
  • Implement data-dense views, interactive dashboards, and visualizations using libraries like D3, ECharts, or Recharts, ensuring performance and cross-browser compatibility.
  • Integrate REST/GraphQL APIs, manage state, write tests, and collaborate with cross-functional teams to deliver custom UI solutions.

CENSUS LABS is a cybersecurity engineering company that builds secure systems and custom solutions at the intersection of cybersecurity and emerging technologies. It is a research-driven and engineering-focused organization that delivers bespoke development for domains such as secure communications, IoT, AI-powered systems, and enterprise applications.

$80,000–$120,000/yr
Global Unlimited PTO

  • Fuel our proprietary AI models by writing JavaScript code to collect data for training AI.
  • Leverage modern tooling including AI as a tool to accelerate problem-solving and building solutions.
  • Collaborate with Data Analysts and Account Executives to secure deals with prominent e-commerce brands.

Constructor is a next-generation platform for search and discovery in ecommerce, built on a unique GPT-based architecture made specifically for commerce. The company is U.S.-based since 2019, founded by Eli Finkelshteyn and Dan McCormick, and values empathy, openness, curiosity, and continuous improvement.

US Unlimited PTO

  • Lead front end and full stack initiatives from ambiguous problem to shipped, measured outcome.
  • Partner with product and design to define architecture and customer experience.
  • Own performance, stability, accessibility, and maintainability across the stack.

Grove Collaborative is a sustainability-focused consumer products company creating household and personal care essentials. It is a certified B Corp and Public Benefit Corporation, with a data and goal-driven engineering culture operating in small autonomous teams.

Latin America

  • Build and maintain responsive, accessible user interfaces using React and TypeScript.
  • Integrate front-end features with back-end services and REST APIs, ensuring reliable application behavior.
  • Collaborate with product designers, back-end engineers, and QA to deliver polished, intuitive user experiences.

Software Mind is an awesome team of engineers who ramp up top-notch companies' projects, aiming to always be one step ahead. We are a multicultural company in constant growth with an excellent work environment certified by Great Place To Work!

Europe

  • Design and develop next-generation browser-based security features used by millions of people worldwide.
  • Provide technical leadership, architecture, and mentoring while collaborating with Product, UX, and QA teams.
  • Design integrations across complex systems and apply AI-enabled workflows to drive quality and performance.

The company creates browser-based security features that protect millions of consumers from online threats. It is a distributed, collaborative engineering organization with a strong culture of autonomy, trust, and engineering excellence.