senior front end developer

eSpark Talent

Job Description &ndash; Senior Front-end DeveloperWe are seeking a dynamic and talented Senior Front-end Developer (React). Your mission will be to develop interactive, visually stunning user interfaces that not only catch the eye but also provide a seamless user experience. The ideal candidate should have a strong understanding of React.js and its core principles, along with a passion for creating seamless user experiences.Responsibilities:<ul><li>Design and implement user interfaces using HTML5. CSS3 and JavaScript (ES6/7).</li><li>Advanced skills in state management using Redux, Context API, or similar techniques.</li><li>Utilize UI libraries such as Bootstrap, Ant Design, and Material UI with proficiency.</li><li>Implement and manage different React libraries and RESTful APIs.</li><li>Ensure cross-browser compatibility and optimize for various devices.</li><li>Conduct thorough testing and debugging, employing unit tests and debugging tools.</li><li>Efficiently use build tools and task runners</li><li>Develop user interfaces for web applications using React.js and TypeScript.</li><li>Optimize web performance through lazy loading, code splitting, caching, etc.</li><li>Demonstrate in-depth knowledge of advanced JavaScript concepts such as ES6+ features, async/await, promises, and functional programming.</li><li>Expertise in React hooks and custom hooks.</li><li>Proficiency in Server-Side Rendering (SSR) and Client-Side Rendering (CSR) for React applications.</li></ul>Requirement:<ul><li>A proven track record of developing high-quality, responsive, and scalable user interfaces.</li><li>Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.</li><li>Familiarity with popular React.js workflows (such as Redux or Flux).</li><li>Experience with HTML5 and CSS3.</li><li>Knowledge of modern authorization mechanisms, such as JSON Web Token.</li><li>Experience with version control systems such as Git.</li><li>Familiarity with RESTful APIs.</li><li>Strong problem-solving skills and commitment to excellence.</li><li>Ability to work in a fast-paced environment and meet tight deadlines.</li></ul>Experience: Over 4 to 5 years of professional experience is required in Front-end Development.Qualification: Bachelor's degree in computer science, Software Engineering, or a related field.Job Type: Full-Time / Remote, Karachi.Benefit:<ul><li>Remote Opportunity</li></ul>Job Type: Full-timeWork Location: Remote

Senior Front-end Developer

Xynotech

About the RoleAs a Senior Front-End Developer, you will lead the development of scalable, high-performance user interfaces while mentoring engineers and shaping frontend architecture. This role blends technical leadership with hands-on development and strategic decision-making.Key Responsibilities<ul><li>Own end-to-end delivery of complex UI features and large-scale refactors</li><li>Architect maintainable front-end systems using clean code principles and design patterns</li><li>Debug, profile, and optimize rendering pipelines and UI performance</li><li>Lead frontend architecture decisions, tooling, and testing strategies</li><li>Mentor junior and mid-level developers through code reviews and pair programming</li><li>Design and maintain E2E testing pipelines</li><li>Establish best practices for state management, performance, and security</li><li>Ensure accessibility (WCAG) and internationalization (i18n) standards are met</li></ul>Required Skills &amp; Qualifications<ul><li>4&ndash;6 years of strong front-end development experience</li><li>Deep expertise in React (hooks, performance optimization, Suspense, error boundaries)</li><li>Strong understanding of component lifecycles, rendering performance, and state management</li><li>Experience with SSR/CSR strategies, hydration, and cross-platform rendering</li><li>Solid knowledge of frontend security and web standards</li><li>Strong communication skills and ability to lead technical discussions</li></ul>Tech Stack<ul><li>React (primary)</li><li>Optional exposure to Vue or Angular</li><li>Modern JavaScript / TypeScript</li><li>Testing frameworks for unit and E2E testing</li><li>CI/CD pipelines and frontend tooling</li></ul>Job Type: Full-timeLocation:<ul><li>Karachi (Required)</li></ul>Work Location: In person

Senior Front End Developer

MEAN 3 PRIVATE LIMITED

We are looking for a highly skilled and motivated Senior Front-End Developer / Senior Shopify Developer to join our dynamic team. If you&rsquo;re passionate about building high-performance, scalable web applications and delivering seamless user experiences, we&rsquo;d love to hear from you!Key Responsibilities:<ul><li>Develop responsive and interactive front-end solutions using modern frameworks.</li><li>Optimize web applications for performance, security, SEO, and accessibility.</li><li>Collaborate closely with UX/UI designers and back-end engineers for smooth integration.</li><li>Uphold coding standards through regular code reviews and clean architecture.</li><li>Mentor junior developers, providing technical guidance and training.</li><li>Build reusable components and maintain consistent design systems.</li><li>Identify and troubleshoot complex front-end issues efficiently.</li><li>Stay current with the latest technologies and best practices in front-end development.</li><li>Contribute to architectural planning and strategic technical decisions.</li></ul>Tech Stack &amp; Tools:<ul><li>eCommerce: Shopify (Liquid templating), Wordpress</li><li>Styling: Tailwind CSS, HTML5, CSS3, JavaScript (ES6+), Jquery</li><li>Build &amp; DevOps: Webpack, Git, GitHub/GitLab, CI/CD (Jenkins, GitHub Actions)</li><li>Other: Performance Optimization, Web Accessibility, Cross-Browser Compatibility</li><li>Frameworks/Libraries (Plus Points): React.js, Next.js, Redux, TypeScript</li><li>Analytics: GA, Meta pixel, tiktok and other third party integrations</li><li>Task Management tools: Jira , trello</li></ul>What We&rsquo;re Looking For3+ years of front-end development experience.Strong problem-solving skills and attention to detail.Job Type: Full-timeWork Location: In person

Senior Shopify Developer

Progatix

Progatix looking for a skilled Full Stack Developer to design, develop, and maintain robust and scalable web applications. The ideal candidate will work closely with cross-functional teams to deliver seamless and high-quality user experiences.Key Responsibilities<ul><li>Design and implement scalable, high-performance web applications.</li><li>Collaborate with designers, product managers, and other developers to build seamless user experiences.</li><li>Develop front-end solutions using modern frameworks such as Angular.</li><li>Build and maintain server-side applications and RESTful APIs using Node.js / Express / NestJS.</li><li>Design, optimize, and maintain databases for performance, reliability, and scalability.</li><li>Ensure high code quality through testing, code reviews, and continuous integration.</li><li>Troubleshoot, debug, and resolve application issues to maintain optimal performance.</li></ul>Requirements<ul><li>Bachelor&rsquo;s degree in Computer Science, Engineering, or a related field (or equivalent practical experience).</li><li>Strong understanding of database design and management (MySQL and/or NoSQL).</li><li>Hands-on experience with Node.js, Angular, and backend API development.</li><li>Familiarity with version control systems such as Git.</li><li>Excellent problem-solving skills and strong attention to detail.</li><li>Ability to work effectively in a team-oriented, on-site environment.</li></ul>Job Type: Full-timeWork Location: In person

Senior Full Stack Developer (Angular & Node Js )

Launch Box

Senior Backend Developer &ndash; Join Our Growing Team!Location: Emarah Suites, Main Shahra-e-Faisal, Karachi Timings: 12:00 PM &ndash; 9:00 PM Employment Type: Full-time | On-siteAbout Us: We are a dynamic and fast-growing tech company dedicated to delivering high-quality, scalable, and innovative solutions for our global clients. We value creativity, problem-solving, and a passion for technology.Position Overview: We&rsquo;re looking for a Senior Backend Developer with strong expertise in Node.js and proficiency in multiple backend technologies. You will architect, develop, and maintain scalable APIs, databases, and backend systems, ensuring optimal performance and security.Key Responsibilities: Design, develop, and maintain robust backend systems and APIs, primarily using Node.js. Work with multiple backend languages and frameworks such as Python, PHP, Java, Go, or .NET when required. Collaborate with frontend developers, mobile engineers, and DevOps teams to deliver end-to-end solutions. Optimize applications for maximum speed, scalability, and security. Manage and maintain databases (SQL &amp; NoSQL) including PostgreSQL, MySQL, MongoDB. Implement best practices for code quality, testing, and deployment. Troubleshoot and debug applications, ensuring smooth performance. Mentor junior developers and lead code reviews.Requirements: 3+ years of backend development experience. Strong expertise in Node.js (Express.js, NestJS, or similar frameworks). Experience with RESTful APIs, GraphQL, and microservices architecture. Familiarity with cloud platforms (AWS, Azure, or GCP). Strong understanding of SQL &amp; NoSQL databases. Proficiency in other backend languages such as Python, PHP, Java, Go, or .NET. Knowledge of authentication, authorization, and security best practices (OAuth, JWT, etc.). Experience with Git and CI/CD pipelines. Strong problem-solving skills and attention to detail.Nice to Have: Experience with Docker, Kubernetes, and container orchestration. Knowledge of serverless architectures. Exposure to real-time systems (WebSockets, Socket.io).Job Type: Full-timeWork Location: In person

Senior Backend Developer (Node.js)

DentistFind

<div><h3 class="jobSectionHeader">Position: Senior Full-Stack Developer (Ruby on Rails + React.js)</h3><div>
Company: DentistFind</div><div>
Location: Remote (working in Eastern Time Zone)</div><div>
Company Overview: 
DentistFind is a leading marketing technology company based in Canada, with 14 years of expertise in empowering dental practices across the globe. Our mission is to facilitate seamless and sustainable growth for dental practices through our innovative PracticeFuel platform, which leverages data-driven digital marketing strategies and cutting-edge technology solutions. By focusing on increasing patient acquisition and retention, DentistFind provides a stable and prestigious work environment that offers opportunities for growth and international exposure.</div><h3 class="jobSectionHeader">
Why Join DentistFind?</h3><div>
At DentistFind, we believe in clarity over complexity, extreme ownership, and building systems that scale. As a rapidly growing dental marketing and technology partner, we empower dental practices with data-driven strategies, cutting-edge tools, and a relentless focus on measurable outcomes. Join us to be a part of a team that values innovation, efficiency, and client success.</div><h3 class="jobSectionHeader">
Job Overview:</h3><div>
We are seeking an experienced Senior Full-Stack Developer to lead the development and maintenance of our cutting-edge platform. The ideal candidate will have a strong background in Ruby on Rails, React.js, and AI coding skills, with proven expertise in server management, database optimization, and scalable architecture. This role requires a strategic thinker who can contribute to the continuous improvement of our technology and processes.</div><h3 class="jobSectionHeader">
Key Responsibilities:</h3><ul><li>
Backend Development: Develop, maintain, and optimize backend services using Ruby on Rails.</li><li>
Frontend Enhancement: Build and enhance responsive front-end interfaces using React.js.</li><li>
AI Integration: Implement and optimize AI-driven solutions within the platform.</li><li>
Server Management: Manage and troubleshoot server environments, preferably on AWS, DigitalOcean, or Heroku.</li><li>
Database Optimization: Design, implement, and optimize database schemas in PostgreSQL and maintain legacy systems using MongoDB.</li><li>
Performance Assurance: Ensure application performance, scalability, and security best practices.</li><li>
Cross-Functional Collaboration: Collaborate with design, QA, and product teams to deliver high-quality releases.</li><li>
Testing and Deployment: Implement automated testing, CI/CD pipelines, and code review best practices.</li><li>
Technical Documentation: Contribute to technical documentation and process improvement.</li></ul><h3 class="jobSectionHeader">
Required Skills and Qualifications:</h3><ul><li>
Bachelor&rsquo;s degree in Computer Science, Software Engineering, or a related field.</li><li>
5&ndash;7+ years of professional experience with Ruby on Rails.</li><li>
Strong experience building React.js frontends with reusable component architecture.</li><li>
Proficiency in AI coding and integrating AI-driven solutions.</li><li>
Solid understanding of RESTful APIs and GraphQL.</li><li>
Experience managing PostgreSQL and MongoDB databases.</li><li>
Proficiency in Linux-based server management (deployments, Nginx, Puma, background jobs, etc.).</li><li>
Experience with Git, CI/CD, and containerization (Docker, Kubernetes is a plus).</li><li>
Familiarity with Agile/Scrum workflows and collaborative development tools (Jira, Trello, GitHub).</li><li>
Relevant certifications in Ruby on Rails, cloud platforms (AWS, Azure, etc.), or AI technologies.</li></ul><h3 class="jobSectionHeader">
Preferred Qualifications:</h3><ul><li>
Experience with Sidekiq, Redis, or background job processing.</li><li>
Exposure to microservices architecture or modular monolith patterns.</li><li>
Understanding of frontend state management (Redux, Zustand, Recoil).</li><li>
Knowledge of testing frameworks (RSpec, Jest, Cypress).</li><li>
Experience with performance monitoring tools (New Relic, Datadog, Sentry).</li><li>
Contributions to open-source projects or a visible GitHub portfolio.</li><li>
Strong skills in AI coding and integrating machine learning models.</li></ul><h3 class="jobSectionHeader">
Ideal Candidate:</h3><ul><li>
A proactive problem-solver who thrives in a fast-paced, remote work environment.</li><li>
Someone who embraces challenges as opportunities for growth and innovation.</li><li>
A team player with excellent communication skills, ready to collaborate across departments.</li><li>
An individual committed to continuous learning and improvement.</li><li>
Strong expertise in AI coding and a passion for leveraging AI to enhance platform capabilities.</li></ul><h3 class="jobSectionHeader">
Company Culture &amp; Values:</h3><ul><li>
Analytical Decision Making: Data-driven strategies guide our decisions.</li><li>
Speed &amp; Agility: We prioritize efficiency and speed in execution.</li><li>
Strategic Focus: Long-term success through strategic actions.</li><li>
Continuous Improvement: Relentless pursuit of excellence and growth.</li><li>
Integrity &amp; Transparency: Building trust through honesty and accountability.</li><li>
Challenge-Oriented: Embracing challenges as opportunities for innovation.</li></ul><h3 class="jobSectionHeader">
What We Offer:</h3><ul><li>
Opportunity to work in a fast-paced, innovative environment.</li><li>
Ability to make a significant impact on the growth and success of dental practices.</li><li>
Professional development and growth opportunities.</li><li>
Collaborative and supportive remote work culture.</li></ul><h3 class="jobSectionHeader">
Work Environment and Work Hours:</h3><ul><li>
Set-up: Full-time, Remote</li><li>
Schedule: Monday-Friday, for 7.5 working hours between 6am and 5pm Eastern Standard Time Zone (EST).</li><li>
Shift options: 6 AM-2 PM (1st shift), 9 AM-5 PM (2nd shift)</li><li>
Remote Work Policy: At DentistFind, we embrace a remote work culture. As part of our commitment to maintaining productivity and accountability, we utilize a time-tracking tool that captures screenshots at random intervals. Candidates should be comfortable with this practice as part of our professional standards. If using a time tracking tool is not suitable for you, we encourage you to reconsider applying.</li></ul><h3 class="jobSectionHeader">
The Team:</h3><div>
Join a dynamic and diverse team spread across the globe, including regions like the Philippines, Nigeria, Pakistan, Indonesia, and India. As part of a remote-first organization, the team values open communication, collaboration, and a shared commitment to the company&rsquo;s mission. You will work closely with the CEO and various department heads, playing a pivotal role in ensuring alignment and advancing strategic objectives.</div><h3 class="jobSectionHeader">
How to Apply:</h3><div>
Interested candidates should submit their resume, cover letter, and any relevant portfolio pieces demonstrating their expertise and success stories. You are encouraged to apply directly through our official job board for a more streamlined application process. This ensures your application is reviewed promptly by our recruitment team. Click here to apply and become a part of our team.</div></div>

Senior Full-Stack Developer (Ruby on Rails + React.js) - Karachi, Pakistan

Requirements:<ul><li>Bachelor's degree in Computer Science or related field</li><li>1 year of professional experience</li><li>Strong proficiency in Node.js and asynchronous programming</li><li>Experience with NextJS, Express.js or similar Node.js frameworks</li><li>Proficiency in working with databases, both SQL and NoSQL.</li><li>Familiarity with version control using Git and collaborative development workflows</li><li>Good understanding of RESTful API design principles and socket programming</li><li>Solid knowledge of software design patterns and best practices</li><li>Experience with ReactJS is a plus</li><li>Understanding of front-end technologies (HTML, CSS, JavaScript) and their integration with server-side logic</li><li>Strong problem-solving skills and the ability to debug complex issues</li><li>Excellent teamwork and communication skills</li></ul>Job Type: Full-timePay: Rs40,000.00 - Rs60,000.00 per monthWork Location: In person

Junior MERN Stack Developer

Explore 759+ Senior front end developer in Karachi Pakistan this January. Find roles across top companies and apply now to boost your career.