Software Development Engineer III (Frontend)

Key Responsibilities

• Develop and implement user-centric features on web platforms to enhance overall experience and usability.
• Collaborate with designers, backend engineers, and product teams to deliver cohesive and scalable products.
• Solve diverse technical and integration challenges by building efficient solutions that connect with automation systems.
• Apply best practices to create reusable, testable, and maintainable components and frameworks.
• Optimize application performance and ensure responsive and adaptive design across multiple devices and browsers.

Qualifications

• Strong understanding of modern front-end development frameworks and architecture.
• Hands-on experience building interactive, high-performance web applications.
• Proficiency with:
• React, Redux, html, css, javascript
• Build tools like Vite, CSS preprocessors such as Less/Sass
• Solid grasp of UI/UX principles, responsive design, and accessibility standards.
• Experience integrating front-end solutions with REST APIs or automation systems is a plus.
• Strong problem-solving skills and a collaborative mindset.

We are seeking a highly skilled React JS Developer with exceptional DOM manipulation expertise and real-time data handling experience to join our team. You'll be building and optimizing high-performance user interfaces for stock market trading applications where milliseconds matter and data flows continuously.

The ideal candidate thrives in fast-paced environments, understands the intricacies of browser performance, and has hands-on experience with WebSockets and real-time data streaming architectures.

Key Responsibilities

Core Development

• Advanced DOM Operations: Implement complex, performance-optimized DOM manipulations for real-time trading interfaces
• Real-time Data Management: Build robust WebSocket connections and handle high-frequency data streams with minimal latency
• Performance Engineering: Create lightning-fast, scalable front-end applications that process thousands of market updates per second
• Custom Component Architecture: Design and build reusable, high-performance React components optimized for trading workflows

Collaboration & Integration

• Work closely with traders, quants, and backend developers to translate complex trading requirements into intuitive interfaces
• Collaborate with UX/UI designers and product managers to create responsive, trader-focused experiences
• Integrate with real-time market data APIs and trading execution systems

Technical Excellence

• Implement sophisticated data visualizations and interactive charts using libraries like Chartjs, TradingView, or custom D3.js solutions
• Ensure cross-browser compatibility and responsiveness across multiple devices and screen sizes
• Debug and resolve complex performance issues, particularly in real-time data processing and rendering
• Maintain high-quality code through reviews, testing, and comprehensive documentation

Required Skills & Experience

React & JavaScript Mastery

• 5+ years of professional React.js development with deep understanding of React internals, hooks, and advanced patterns
• Expert-level JavaScript (ES6+) with strong proficiency in asynchronous programming, closures, and memory management
• Advanced HTML5 & CSS3 skills with focus on performance and cross-browser compatibility

Real-time & Performance Expertise

• Proven experience with WebSockets and real-time data streaming protocols
• Strong DOM manipulation skills - direct DOM access, virtual scrolling, efficient updates, and performance optimization
• RESTful API integration with experience in handling high-frequency data feeds
• Browser performance optimization - understanding of rendering pipeline, memory management, and profiling tools

Development Tools & Practices

• Proficiency with modern build tools: Webpack, Babel, Vite, or similar
• Experience with Git version control and collaborative development workflows
• Agile/Scrum development environment experience
• Understanding of testing frameworks (Jest, React Testing Library)

Financial Data Visualization

• Experience with financial charting libraries: Chartjs, TradingView, D3.js, or custom visualization solutions
• Understanding of market data structures, order books, and trading terminology
• Knowledge of data streaming optimization techniques for financial applications

Nice-to-Have Skills

Domain Expertise

• Prior experience in stock market, trading, or financial services - understanding of trading workflows, order management, risk systems
• Algorithmic trading knowledge or exposure to quantitative trading systems
• Financial market understanding - equities, derivatives, commodities

Technical Plus Points

• Backend development experience with GoLang, Python, or Node.js
• Database knowledge: SQL, NoSQL, time-series databases (InfluxDB, TimescaleDB)
• Cloud platform experience: AWS, Azure, GCP for deploying scalable applications
• Message queue systems: Redis, RabbitMQ, Kafka, NATS for real-time data processing
• Microservices architecture understanding and API design principles

Advanced Skills

• Service Worker implementation for offline-first applications
• Progressive Web App (PWA) development
• Mobile-first responsive design expertise

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field (or equivalent professional experience)
• 5+ years of professional React.js development with demonstrable experience in performance-critical applications
• Portfolio or examples of complex real-time applications you've built
• Financial services experience strongly preferred

Why You'll Love Working Here

We're a team that hustles—plain and simple. But we also believe life outside work matters. No cubicles, no suits—just great people doing great work in a space built for comfort and creativity.

What We Offer

💰 Competitive salary – Get paid what you're worth

🌴 Generous paid time off – Recharge and come back sharper

🌍 Work with the best – Collaborate with top-tier global talent

✈️ Adventure together – Annual offsites (mostly outside India) and regular team outings

🎯 Performance rewards – Multiple bonuses for those who go above and beyond

🏥 Health covered – Comprehensive insurance so you're always protected

⚡ Fun, not just work – On-site sports, games, and a lively workspace

🧠 Learn and lead – Regular knowledge-sharing sessions led by your peers

📚 Annual Education Stipend – Take any external course, bootcamp, or certification that makes you better at your craft

🏋️ Stay fit – Gym memberships with equal employer contribution to keep you at your best

🚚 Relocation support – Smooth move? We've got your back

🏆 Friendly competition – Work challenges and extracurricular contests to keep things exciting

We work hard, play hard, and grow together. Join us.

At Thrillophilia, we have set sail on a mission to redefine the way people explore the world, one byte at a time. We are driven by a shared passion for excellence and a relentless pursuit of innovation. We have established ourselves as industry leaders in delivering cutting-edge solutions that have transformed the way the travel industry operates. Our commitment to pushing boundaries and creating groundbreaking technology sets us apart from the rest.

We are seeking a highly skilled and passionate Senior Software Developer with expertise in Frontend Frameworks like React.js or Next.js to join our dynamic and innovative tech team. As a Senior Software Engineer, you will play a crucial role in designing, developing, and implementing high-quality software solutions that drive the success of our travel platform. You will work closely with cross-functional teams, including product development, UI/UX design, and quality assurance, to ensure seamless integration of features and deliver exceptional user experiences. 

We are looking for individuals who are not only technically proficient but also deeply passionate about building scalable products that make a meaningful impact.

Are you ready to embark on an exciting journey where we're building the most incredible travel platform in the world?

Why Choose Thrillophilia?

A Culture of Excellence: We have cultivated a culture that nurtures creativity, celebrates diversity, and fosters collaboration. Our team is comprised of brilliant minds who thrive on challenges, embrace change, and consistently deliver exceptional results.

Impactful Projects: As a Senior Software Engineer, you will have the opportunity to work on exciting and impactful projects that shape the future of our industry. Your expertise and contributions will directly influence the success of our groundbreaking solutions and drive our mission forward.

Growth and Development: We believe in investing in our team members' growth and development. Through continuous learning and our mentorship, we empower you to expand your skill set, broaden your horizons, and reach new heights of professional excellence.

Cutting-Edge Technology: At Thrillophilia, we pride ourselves on staying at the forefront of technological advancements. As a member of our team, you will have access to state-of-the-art tools, cutting-edge frameworks, and a supportive environment that encourages exploration and experimentation.

Responsibilities:

• Develop and maintain robust, scalable, and efficient web applications using React.js / Next.js.
• Collaborate with product managers, UI/UX designers, and fellow developers to understand requirements, translate them into technical solutions, and deliver high-quality software products.
• Write clean, maintainable, and well-documented code following industry best practices and coding standards.
• Conduct thorough code reviews, provide constructive feedback, and mentor junior developers to enhance team productivity and code quality.
• Optimize application performance and ensure efficient resource utilization by conducting performance testing, monitoring, and troubleshooting.
• Stay updated with the latest industry trends, tools, and technologies related to JS and JS frameworks like React.js / Next.js, and share knowledge with the team.
• Collaborate with the DevOps team to deploy and maintain applications in cloud-based environments.
• Contribute to the continuous improvement of development processes, tools, and methodologies.

Requirements:

• Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience).
• At least 4+ years of relevant experience as a front-end developer
• Strong expertise in React.js / Next.js with a solid understanding of their core principles and ecosystem.
• Proficient in front-end development technologies such as HTML5/CSS, JavaScript and Typescript.
• Deep understanding of the DOM, Browser Events, JavaScript APIs, Canvas rendering etc.
• Proficiency in creating mobile websites and putting responsive design strategies into practice
• Extensive knowledge of contemporary web development tools such as Babel, PostCSS, and Webpack
• Regard for optimizations that focus on delivering content to the user as quickly as possible.
• Familiarity with version control systems, such as Git.
• In-depth SEO optimization knowledge is seen as a plus.
• Ability to write efficient, maintainable, and testable code, with a strong emphasis on software quality and best practices.
• Strong problem-solving and analytical skills, with the ability to tackle complex technical challenges and provide innovative solutions.
• Excellent communication and collaboration skills, with the ability to work effectively in a team-oriented environment.
• Self-motivated and detail-oriented, with a passion for continuous learning and staying updated with emerging technologies.

If you are passionate about building revolutionary travel products, thrive in a collaborative and innovative environment, and are ready to take on exciting challenges, we would love to hear from you. 

Apply now and embark on a transformative journey to redefine the future of travel!

Core responsibilities

•      Collaborate with product teams to more accurately define new features

•      Collaborate with UX in the building of a design system/component library

•      Ensure high performance of all systems developed

•      Aware of the relationship between development and business with a strong sense of ownership

•      Employ the latest techniques such as agile software development

•      Good knowledge of highly scalable server-side development

•      Basic working knowledge of Unix/Linux

•      Excellent problem solving and coding skills in Javascript (Angular/React)

•      Strong interpersonal, communication and analytical skills

•      Should have the ability to express their design ideas and thoughts

Job Brief

•      JavaScript and Typescript expertise with Angular Framework

.    Must have Monorepo experience with Nx from initial setup to CI/CD and maintenance. 

•      Experience with libraries such as bootstrap, Ag-grid, formly, observables, and ngrx

•      You enjoy working with new technologies, and are curious and energetic

•      Experience working with REST APIs

•       Good understanding about authentication and security

•      Create and maintain various unit and integration tests

•      You enjoy working in a creative and agile environment that moves fast

•      Ability and interest in providing mentorship to junior members of the team

•      Write high quality code and Conduct code reviews

•      Being resourceful and detail-oriented, along with being an outside the box thinker!

•      Experience being a great team player, who work collaborative, and brings a positive attitude

Headquartered in Ahmedabad, Appitsimple is better known for its innovative "Digital Products" - SoftwareSuggest and CallHippo. It is an IT company that has been revolutionizing & simplifying the way organizations do business since Jan 2014.

We are a growing team of 160+ professional experts coming from diverse backgrounds who have keen expertise in dealing with Digital Products. A flexible work environment, a high level of empowerment, involvement in the company's business decisions, leadership development through mentoring, and skills development initiatives are the big takeaways at Appitsimple Infotek.  

URL:  https://appitsimple.com/about">https://appitsimple.com/about

Product: CallHippo.

URL: https://callhippo.com/

CallHippo was launched in 2017. It is an intelligent VoIP (voice over Internet protocol) service provider for business organizations and call centers. The main objective behind launching CallHippo was to provide easy-to-adopt, cost-effective, scalable, and accessible phone systems to businesses. Customized pricing plans, 24/7 available support, and innovative top-of-the-line features make CallHippo stand out from market competitors. With 2000+ customers across 25+ countries, the company is just getting started and is sure to scale greater heights in the future.

Appitsimple prides itself on a flexible work environment that empowers employees to be key decision-makers to grow personally and professionally. The company strives to develop leaders through an active mentoring program and skill development initiatives. An inclusive workplace, Appitsimple encourages freedom, and independent thinking and aims to create thought leaders in the business ecosystem.

Experience -2+ Years

Responsibilities:

• Design, implement and manage websites using WordPress
• Manage front-end and back-end website development
• Customize WordPress plug-ins and themes
• Optimize website for maximum speed
• Maintain well-documented, reusable, and transferrable code
  
  

Requirements: 

• Proficiency using WordPress
• Be proficient in coding languages such as HTML, CSS, JavaScript, React and jQuery
• Experience using debugging tools such as Firebug and Chrome Inspector
• Strong understanding of front-end and back-end website development

We are looking for programmers with a keen eye for design for the position of Front End Developer. Front end Developers are responsible for ensuring the alignment of web design and user experience requirements, optimizing web pages for maximum efficiency and maintaining brand consistency across all web pages, among other duties.

Front End Developers are required to 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.

• Determining the structure and design of web pages.
• Ensuring user experience determines design choices.
• Developing features to enhance the user experience.
• Striking a balance between functional and aesthetic design.
• Ensuring web design is optimized for smartphones.
• Building reusable code for future use.
• Optimizing web pages for maximum speed and scalability.
• Utilizing a variety of markup languages to write web pages.
• Maintaining brand consistency throughout the design.

• Degree in Computer Science or related field.
• Understanding of key design principles.
• Proficiency with HTML, CSS, JavaScript and jQuery.
• Understanding of server-side CSS.
• Experience with graphic design applications such as Adobe Illustrator.
• Experience with responsive and adaptive design.
• Understanding of SEO principles.
• Good problem-solving skills.
• Excellent verbal communication skills.
• Good interpersonal skills.

Responsibilities

• A complete ownership of the feature.
• Find innovative ways to increase efficiency/Application performance.
• Implement Visual Designs in standards compliant.
• Build efficient and reusable front-end systems and abstractions.
• Suggest and implement improvements to existing product interfaces.
• Ensure that all the assigned systems are performing to scale.
• Work closely with product management team to define and refine feature.

Requirements

• At least 2 years of product development experience with expertise in designing and implementing high-performance web applications.
• Strong hands-on experience in developing web applications using JavaScript.
• Strong experience and knowledge in single page frameworks using ReactJS and ability to design the architecture of single page applications.