senior javascript engineer

Chainnodes

You'll be working on a Web3 NeobankRole OverviewWe&rsquo;re seeking a Senior JavaScript Engineer to design, develop, and optimize high-performance front-end and back-end systems across our products.Key Responsibilities<ul><li>Architect, build, and maintain modern JavaScript/TypeScript codebases.</li></ul>QualificationsMust-have:<ul><li>5+ years of experience in JavaScript/TypeScript development.</li><li>Expertise with React, Next.js, or Vue.js (SSR and CSR experience).</li><li>Solid understanding of Node.js and asynchronous programming patterns.</li><li>Familiarity with RESTful APIs, WebSockets</li><li>Great English</li></ul>Nice-to-have:<ul><li>Experience with blockchain/Web3</li><li>Familiarity with Rust, Go, or backend microservices.</li><li>Understanding of DevOps tools (Docker, CI/CD pipelines).</li><li>General interest in working with other programming languages</li></ul>What We Offer<ul><li>Great salary for great skills</li><li>International comprehensive health insurance for you and your family, visas</li><li>Flexible working</li></ul>Job Types: Full-time, Permanent

Senior Backend JavaScript Engineer

Qoyod

<div>About Us 

We're leaders in technology, managing over 120K production databases and delivering 5+ SaaS products. Handling an average of 15K req/min, we're committed to reliability and scalability. Join us in driving technological advancement and making an impact worldwide. 
 
Job Summary 
 
As a Senior Frontend Software Engineer, you would be responsible for ensuring the alignment of web design and user experience requirements, optimizing web pages for maximum efficiency, and maintaining design consistency across all web pages and devices, among other duties. Also, you will work in teams alongside back-end developers, graphic designers, and user experience designers to ensure all elements of web creation are consistent. This requires excellent communication and interpersonal skills. 

Responsibilities: 
<ul>
<li>Leverage the inbuilt React toolkit for creating frontend features.</li>
<li>Create data visualization tools, libraries, and reusable code for prospects.</li>
<li>Integrate designs and wireframes within the application code.</li>
<li>Monitor interaction of users and convert them into insightful information.</li>
<li>Write application interface code with JavaScript/TypeScript.</li>
<li>Enhance application performance with constant monitoring.</li>
<li>Translate wireframes and designs into good quality code.</li>
<li>Optimize components to work seamlessly across different browsers and devices.</li>
<li>Good understanding of CSS libraries, zeplin, Sketch, Adobe XD,...etc.</li>
<li>Proper user information authentication, develop responsive web-based UI.</li> 
</ul>
Qualifications: 
<ul>
<li>7+ years of experience with software engineering, and one or several formal qualifications.</li>
<li>Strong proficiency in JavaScript, object model, DOM manipulation and event handlers, data structures, algorithms, JSX, and Babel.</li>
<li>Complete understanding of ReactJS and its main fundamentals like JSX, Virtual DOM, component lifecycle, etc.</li>
<li>Preceding experience with ReactJS workflows like Flux, Create React App, data structure libraries.</li>
<li>Understanding of RESTful APIs/GraphQL, HTML/CSS, ES6, code versioning tools like GIT, etc., popular frontend development tools, CI/CD tools, DevOps, performance testing frameworks like Mocha, Node + NPM.</li>
<li>Open-minded team player, willing to accept feedback and offer suggestions.</li>
<li>Capability to write crisp and clear code based on guidelines and best practices.</li></ul></div>

Senior Frontend Software Engineer

InnovationTeam

<div>Job Summary
We are seeking a highly experienced Senior Front-End Engineer with a minimum of 10 years of professional experience in modern web application development. The ideal candidate must have deep expertise in JavaScript, React, and modern front-end architectures, along with strong hands-on experience in Node.js and advanced Server-Side Rendering (SSR) implementations. 
 
This role requires a strong architectural mindset and the ability to work with different template engines and rendering frameworks, as some clients require working on various server-side template engines such as Pug, EJS, Handlebars, and other rendering solutions. The candidate must be comfortable adapting to multiple frameworks and enterprise environments.
Key Responsibilities<ul><li>Lead the design and development of scalable, enterprise-grade web applications using JavaScript (ES6+) and React.</li><li>Architect and implement advanced Server-Side Rendering (SSR) solutions using frameworks such as Next.js or custom Node.js rendering pipelines.</li><li>Work with and adapt to various template engines (e.g., Pug, EJS, Handlebars, JSX-based rendering) depending on client requirements.</li><li>Design reusable, maintainable, and high-performance UI component libraries.</li><li>Develop and maintain backend services using Node.js when required.</li><li>Optimize rendering performance across client-side and server-side environments.</li><li>Ensure SEO optimization and performance best practices in SSR-based applications.</li><li>Collaborate with architects, backend teams, UI/UX designers, and stakeholders to define technical solutions.</li><li>Conduct code reviews, enforce coding standards, and mentor junior developers.</li><li>Participate in architectural decisions and technical roadmap planning.</li></ul>
Required Qualifications<ul><li>Bachelor&rsquo;s degree in Computer Science, Software Engineering, or related field.</li><li>Minimum 10 years of experience in front-end development.</li><li>Expert-level proficiency in JavaScript (ES6+).</li><li>Advanced experience with React.js and modern React ecosystem (Hooks, Context API, advanced state management).</li><li>Strong hands-on experience with Node.js in full-stack or SSR environments.</li><li>Deep understanding of Server-Side Rendering (SSR), hydration, caching strategies, and rendering lifecycle.</li><li>Proven experience working with multiple template engines and server-side rendering frameworks.</li><li>Strong understanding of REST APIs and integration with backend services.</li><li>Experience in performance optimization for large-scale web applications.</li></ul>
Preferred Qualifications<ul><li>Extensive experience with Next.js or similar SSR frameworks.</li><li>Experience with TypeScript in large-scale applications.</li><li>Knowledge of modern build tools (Webpack, Vite, Babel) and performance tuning.</li><li>Experience in CI/CD pipelines and DevOps collaboration.</li><li>Strong understanding of SEO strategies in SSR applications.</li><li>Experience in enterprise or multi-client delivery environments.</li><li>Experience mentoring teams and leading technical initiatives.</li></ul>
Key Skills<ul><li>Strong architectural and problem-solving skills.</li><li>Ability to work across different frameworks and template engines based on client needs.</li><li>Clean, scalable, and maintainable coding practices.</li><li>Strong communication and leadership skills.</li><li>Ability to handle complex enterprise environments and deadlines.</li></ul></div>

Senior Front-End Engineer

CodingKey

Job DescriptionJob Overview We are seeking a highly experienced Senior Full Stack Engineer to design and build modern AI-enabled web applications and backend services. The role focuses on NodeJS, Angular, and TypeScript, with growing integration of Large Language Models (LLMs) and AI-driven workflows. You will work on scalable client-server systems, AI-powered features, and real-time integrations. Candidates with experience building conversational AI systems or Voice Assistants will be given preference. This role requires engineers who can combine strong full-stack development skills with modern AI tooling and AI-assisted development practices.Responsibilities: Design, develop, and maintain scalable web applications using NodeJS, Angular, and TypeScript. Architect and implement end-to-end full stack solutions including frontend, backend services, APIs, and integrations. Build clean, maintainable, and well-tested code following engineering best practices. Develop and maintain RESTful and event-driven APIs. Integrate third-party services and external APIs. Work closely with DevOps to optimize deployment, scalability, reliability, and performance. Implement prompt engineering, tool usage, and AI-driven workflows. Work with AI teams to integrate AI services into production systems. Contribute to the development of conversational AI and voice assistant platforms. Implement real-time workflows, streaming integrations, or conversational pipelines. Integrate telephony APIs, real-time communication systems, or conversational interfaces where required. Conduct code reviews and mentor junior engineers. Implement unit tests, integration tests, and automated testing pipelines. Troubleshoot production issues and improve system reliability. Ensure security, authentication, and data protection best practices. Maintain technical documentation and knowledge sharing. Leverage AI-powered development tools (e.g., Cursor, Copilot, LLM-based coding assistants) to accelerate development while maintaining engineering quality. Continuously evaluate modern AI development workflows and tools.Requirements: Bachelor&rsquo;s/Master&rsquo;s degree in computer science, information technology, software engineering, or related field. 5+ years of professional experience as a Full Stack Engineer. Proven expertise in NodeJS, Angular, and TypeScript. Strong proficiency in JavaScript ecosystem and modern web frameworks. Solid experience in full stack application architecture. Experience designing scalable backend services and APIs. Strong knowledge of SQL/NoSQL databases (MySQL, PostgreSQL, MongoDB, etc.). Experience with RESTful APIs and distributed systems. Experience integrating third-party APIs and external platforms. Solid understanding and proven hands-on experience with WebSockets. Practical experience or familiarity with LLMs. Experience integrating AI APIs such as OpenAI, Gemini, or similar platforms. Understanding of AI-assisted software development tools (e.g., Copilot, Cursor). Experience working with cloud platforms (AWS, GCP, or Azure). Familiarity with Docker and containerized environments. Understanding of CI/CD pipelines and automated deployment. Excellent problem-solving and critical-thinking skills. Effective communication and collaboration abilities. Candidates with experience in cloud platforms such as AWS and Google Cloud will be preferred.Location: RemoteJob Type: Full-timeWork Location: Remote

Senior Full Stack Engineer (NodeJS, Angular, TypeScript)

International Turnkey Systems - ITS

<div>
 
 
 We're Hiring: Senior Full Stack Developer
 
 
 
 We are seeking a talented
 
 Senior Full Stack Developer
 
 to join our dynamic team
 
 
 
 
 
 
 📌 Requirements:
 
 
 <ul>
 <li>
 
 Minimum 5 years of experience as a Full Stack Developer.
 
 </li>
 <li>
 Proficiency in the following technologies:
 </li>
 <li>
 
 .NET Core
 
 </li>
 <li>
 
 Web APIs
 
 </li>
 <li>
 
 C#
 
 </li>
 <li>
 
 Entity Framework Core
 
 </li>
 <li>
 
 JavaScript, TypeScript, and React
 
 </li>
 <li>
 
 SQL Server Database Engine
 
 </li>
 </ul>
 
 
 
 
 
 🔍 Key Responsibilities:
 
 
 <ul>
 <li>
 Design, develop, and maintain scalable web applications.
 </li>
 <li>
 Collaborate with cross-functional teams to define, design, and ship new features.
 </li>
 <li>
 Troubleshoot and optimize existing applications.
 </li>
 <li>
 Write clean, maintainable code and ensure best practices are followed
 </li>
 </ul>
 
 
</div>

Senior Full Stack Engineer

Star

<div>We are looking for a low-level, high-output React Native Programmer. This is a role for an engineer who understands what&rsquo;s happening under the hood&mdash;beyond just rendering components. You will be responsible for the technical architecture, performance optimization, and end-to-end delivery of complex mobile systems in our Riyadh office. 
Requirements 
 
Core Technical Requirements<ul><li>
Deep React Native Internals: Expert-level knowledge of the React Native lifecycle, the Bridge, JSI, and the New Architecture (Turbo Modules/Fabric).</li><li>
JavaScript &amp; TypeScript: Mastery of ES6+, asynchronous programming patterns, and strict type safety.</li><li>
State &amp; Data: Advanced implementation of state management (Redux + Saga/Thunk, Zustand, or TanStack Query) and efficient data caching strategies.</li><li>
Native Bridging: Proven ability to write Native Modules and navigate the communication between JS and Swift/Objective-C (iOS) or Kotlin/Java (Android).</li><li>
Performance Engineering: Experience with memory leak detection, CPU profiling using Flipper or Xcode Instruments, and optimizing app startup time (Hermes/re-renders).</li><li>
Cross-Platform Versatility: Strong plus if you have hands-on experience with Flutter (Dart) or have transitioned apps between frameworks.</li><li>
Git understating and version control</li></ul>
Engineering Responsibilities<ul><li>
Architect scalable front-end logic for complex, high-traffic mobile applications.</li><li>
Integrate deeply with RESTful APIs, WebSockets, and third-party SDKs.</li><li>
Manage the full release cycle, including CodePush deployments and App Store/Play Store submission hurdles.</li><li>
Troubleshoot &quot;hard-to-repro&quot; bugs that require digging into native code or node_modules.</li><li>
Ensure UI fidelity through high-performance animations (Reanimated 3, Moti).</li></ul></div>

Senior React Native Engineer (Hands-on Programmer)

Pet Media Group

<div><h3 class="jobSectionHeader">About us</h3>
Pet Media Group (PMG) is a scale-up that acquires, launches, and develops market-leading pet marketplaces globally, with over 1.5 million animals finding new homes through our platforms every year. We currently operate in 6 countries (UK, Sweden, Netherlands, Italy, Spain, and most recently the US) &mdash; all within just 5 years of launching. Here's one of our apps: Pets4Homes.co.uk 
The way pets find new loving homes has remained largely unchanged for centuries. We're on a mission to change that through innovative technology &mdash; and increasingly, through the intelligent use of AI. We're a young and ambitious team who have built unicorns before (e.g. Avito), backed by some of Europe's leading investors (e.g. Verdane and Otiva &mdash; early backers of Klarna, CAIA, Apotea, and Easypark).
Who are we looking for?
We're expanding our Monetisation team and looking for an FE-focused full stack engineer to help us build great products in the payment processing &amp; value-added services space, and improve the user experience in the payment domain. 
We're not just looking for a strong engineer &mdash; we're looking for someone who actively uses AI tools as part of their daily workflow: whether that's using LLMs to accelerate development, exploring AI-powered tooling for testing, code review, or product ideation, or simply staying genuinely curious about where the technology is heading. 
We expect roughly 6 years of engineering experience, ideally with our current tech stack &mdash; and a mindset that sees AI as a multiplier, not a buzzword.<h3 class="jobSectionHeader">
Requirements</h3>
We're a fast-growing scale-up. We want engineers who build fast, fail fast, and learn fast. You don't need to be a world-class expert in every tool we use &mdash; but you do need a critical, open mindset, strong JavaScript proficiency, and a genuine enthusiasm for AI-assisted development. 
Core (required):<ul><li>
Building apps with TypeScript, Next.js, Node.js &amp; React</li><li>
Understanding of GraphQL and its usage in large systems with multiple consumers</li><li>
Experience with frontend testing tools and testing strategies</li><li>
Experience with relational databases like PostgreSQL</li><li>
Active use of AI tools (e.g. Claude, Cursor, Codex, ...) in your day-to-day engineering work &mdash; we want to hear how you use them</li></ul><div>
Bonus (helpful &amp; appreciated):</div><ul><li>
Experience with payment processing (Stripe, Adyen, Braintree)</li><li>
Experience with search technologies like Elasticsearch</li><li>
Experience with monitoring &amp; observability tools like Grafana</li><li>
Experience with responsive design &amp; mobile web UX</li><li>
Experience with UI/component frameworks like Tailwind</li><li>
Experience evaluating or experimenting with AI coding workflows at team or company level</li></ul><div>
Working proficiency in English is required.</div><h3 class="jobSectionHeader">
Our tech stack</h3>
Next.js, React, Node.js &amp; React Native (TypeScript throughout) &middot; GitLab CI/CD &middot; Elasticsearch &middot; Redis &middot; GraphQL &amp; PostgreSQL &middot; Knex &middot; Docker &middot; Serverless with AWS Lambda &middot; AWS &middot; Grafana &middot; Bitrise<h3 class="jobSectionHeader">
What we offer</h3><ul><li>
Join a rapidly growing, already-profitable business with a clear vision and genuine energy</li><li>
A diverse team across Sweden, Germany, Austria, UK, Poland, Portugal, Bosnia, Croatia, Ukraine and Egypt</li><li>
A real opportunity to shape our tech department &mdash; and to help define how AI becomes part of how we build</li><li>
Competitive compensation and great benefits (remote or in-person)</li></ul>
We very much look forward to your application, contact us if you have any questions!</div>

Senior Fullstack Engineer (FE-focused) — Monetisation Team (f/m/d)

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