OpenZeppelin seeks a senior, autonomous web developer (contractor) to lead a 6-month migration of openzeppelin.com from HubSpot to a Sanity + Next.js stack. Responsibilities include content modeling and schema design, frontend build, HubSpot CRM and GA4 integrations, SEO and redirect preservation, CI/CD and hosting setup, Claude Code + Sanity integration, component library creation, documentation, and training marketing/brand teams. Candidates must have 5+ years' web development experience, strong frontend expertise (TypeScript, React, Next.js), proven Sanity experience, and fluent/native English. Remote within UTC-6 to UTC+2 time zones.

Lead and grow a frontend technical consulting squad responsible for delivering modular X-pages solutions (No-Code and Pro-Code) using JavaScript/Vue, integrating CRM data and AI/LLM components. Responsible for hiring, mentoring, technical oversight, escalation management, and partnering with customers and internal Product/Business Consulting teams. Based in Hungary (Budapest) with occasional EMEA travel.

Design, develop, and integrate scalable backend services and platform components using C# and .NET Core. Implement enterprise authentication and identity solutions (SAML, SSO, OIDC, Okta), develop and maintain frontend components using Angular, and collaborate with cross-functional teams on platform modernization, migrations, and system integrations. Role requires 5+ years of full stack experience and experience with messaging (RabbitMQ), Elastic technologies, relational databases, and Agile/Scrum environments.

Responsible for designing and developing scalable backend services in C#/.NET Core, implementing enterprise authentication (SAML, SSO, OIDC, Okta), and building frontend/admin interfaces in Angular. Requires 5+ years full stack experience with Microsoft technologies, familiarity with relational databases (SQL Server/PostgreSQL), messaging (RabbitMQ), Elasticsearch, and working in Agile/Scrum environments. Location listed as Bolivia; role is remote.

Hiring a Senior Full Stack Engineer (.NET/Angular) based in Colombia (remote). Responsibilities include designing and developing backend services with C#/.NET Core, implementing enterprise authentication (SAML, SSO, OIDC, Okta), building frontend/admin interfaces in Angular, and working with SQL databases, RabbitMQ, and Elastic for logging/monitoring/search. Requires 5+ years of relevant experience and experience in Agile/Scrum environments.

Coforge seeks a Mobile Developer (Ionic) in Peru (hybrid). Required: 3+ years experience, strong Ionic (6/7+), Kotlin with Coroutines, Angular (intermediate), Capacitor, Android Jetpack, MVVM, Clean Architecture, Hilt/Dagger. Responsibilities: migrate native Kotlin apps to Ionic, develop and maintain hybrid apps, integrate native Android features, consume REST APIs (HttpClient, RxJS, interceptors), design modular frontend architectures, manage Android/iOS builds, and resolve hybrid mobile development issues (permissions, plugins, configuration, build errors).

Work on the WebExtensions platform in Firefox to implement and maintain extension APIs and addon management, debug extension issues, build related UI, collaborate across product/QA/AMO teams, and participate in open source workflows. Requires 4+ years professional software development experience and strong JavaScript/DOM/HTML/CSS skills; familiarity with browser internals and API design is expected.

The role is for a Senior Platform/Software Engineer on the WebExtensions team at Mozilla, responsible for implementing and maintaining WebExtensions APIs and Addon Management, debugging extension issues, contributing to Mozilla-owned extensions, and collaborating across product, QA, and AMO engineering. Requires 4+ years professional software development experience and strong JavaScript, DOM, HTML, and CSS skills; Firefox internals, C++/Rust, Android/GeckoView, and web security are listed as bonuses.

Wikimedia Foundation seeks two remote Software Engineer III (web full-stack) to join Core Experiences — App Growth or Editing teams — to build web-first product experiences, APIs, integrations and reusable components across mobile web and native app surfaces. Role requires at least a Bachelor's and 2 years' professional web application experience and experience with backend (PHP/Python) and/or frontend (JavaScript frameworks), responsive/mobile-first design, observability and testing.

Role requires owning the email channel end-to-end: building frontend campaign experiences and designing/operating backend systems for high-volume email sending. Key areas include deliverability, bounce and feedback-loop processing, IP/domain reputation, observability, and working with Go, React, cloud environments (AWS/GCP), and MySQL. Posting specifies 7+ years of experience and a stated salary range of $150,000–$200,000 USD.

Join Wikimedia Foundation's App Growth team to design and implement web-first product experiences, RESTful APIs, and integrations that work across mobile web and native apps. Responsibilities include leading delivery of medium-complexity initiatives, frontend and backend implementation, observability, testing, cross-functional collaboration, prioritisation, and mentorship. Requires a bachelor's degree and 5+ years professional experience, strong JavaScript/TypeScript skills and frameworks (Vue.js or React), and experience with at least one backend language (e.g., PHP, Python, Java, Go). Position is fully remote with hiring available in a specified list of countries; US-based pay range provided.

SeatGeek is hiring a Senior Fullstack Software Engineer to work remotely in the United States. The role focuses on frontend engineering with TypeScript/JavaScript and modern frameworks (React/Next.js) and may include backend work in Python. Responsibilities include leading end-to-end product initiatives, mentoring engineers, improving front-end tech strategy, and optimizing architecture and performance across distributed web systems. The stack and tools mentioned include AWS, Kubernetes, Fastly, Datadog, Mixpanel, and experimentation tooling (Eppo).

Seeking a Senior Fullstack Java Developer with strong backend expertise (Java, Spring Boot) who can also implement frontend components (React/Angular, JavaScript/TypeScript) and work from Figma designs. Responsibilities include building RESTful APIs, contributing to CI/CD and deployment workflows, troubleshooting across layers, and mentoring junior engineers. Remote, full-time role based in Mexico.

Netguru seeks a Polish-speaking Frontend Developer for a full-time freelance engagement (start 12.06.2026, 6 months). Required skills include ClojureScript, functional programming, re-frame, Reagent, EDN/Transit, clojure.spec, JS interop with NPM libraries, shadow-cljs (or Leiningen), REPL-driven development, React performance optimization and testing with cljs.test. Role is 100% remote with working hours 9–17 CET; salary up to €35/hour.

Acquia seeks a staff web designer to set the visual and experiential bar for Acquia.com, co-own a Tailwind + React component-based design system, and lead adoption of AI-generated and AI-assisted surfaces. The role requires 5+ years designing for the web, strong visual design and accessibility (WCAG 2.1) expertise, fluency with Figma, Tailwind and modern React patterns, and willingness to write frontend code (HTML/CSS/JS).

Build features in Angular 2+ and architect reusable, performant front-end code. Collaborate with designers, backend and integrations teams, own testing and quality with QA, resolve performance and scalability issues, and mentor teammates. Requires 8+ years working with JavaScript and modern frameworks (Angular 2+), TypeScript, NgRx, and RxJS.

Join ClickUp as a Senior Frontend Engineer to build features in Angular 2+ while collaborating with designers, backend and integrations teams. The role emphasizes reusable component architecture, Redux-style state management (NgRx), TypeScript, RxJS, testing (unit & integration), performance and cross-browser/accessibility considerations. Locations listed: Poland, Bulgaria, Ukraine, Hungary, Czechia, Ireland.

Remote Senior Full Stack Engineer responsible for developing and evolving integrations (plugins, services, APIs) between platforms such as WordPress, WooCommerce, and Webflow and external partners. Role involves full‑stack development (PHP backend, modern JavaScript/React frontend), shaping architecture, participating in technical planning, and collaborating with product, design, and partner teams.

Remote-first role at Seeq to lead the evolution of a complex enterprise frontend system: improve component quality, build higher-order blocks and page templates, and create documentation and APIs that improve developer experience. Requires at least 10 years professional software development experience, strong technical leadership, and hands-on expertise with React, TypeScript, TailwindCSS, design systems, accessibility, and Figma. Salary range: $144,000–$170,000 USD per year.

Rol centrado en desarrollar componentes frontend reutilizables y de alta calidad usando CELLS. Responsabilidades incluyen construcción de componentes complejos conforme a guías de estilo, aplicación de buenas prácticas de arquitectura frontend, implementación de testing automatizado y BDD, gestión de CI/CD (Jenkins), revisión de Pull Requests, identificación de mejoras de rendimiento/seguridad/UX y mentoría a perfiles junior/semi senior. Trabajo en equipos ágiles (Scrum).