software engineer

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.

• Strong Software Development & DSA Profile
• Mandatory (Experience): Must have 2+ YOE in Software Development (preferably in product-based companies)
• Mandatory (Skills 1): Must have proficiency in programming languages such as C++, Java, or Python
• Mandatory (Skills 2): Must have strong expertise in scalable systems and applied DSA in practice
• Mandatory (Skills 3): Must have strong understanding of System Design (liek HLD, LLD, microservices, caching, database scaling)

• - Contribute to a full development life cycle, including: requirements analysis, functional design, technical design, programming, testing, documentation, implementation, and on-going technical support.
• - Work closely with the existing team to learn the current application architecture, design and understand its functionalities and complexities.
• - Bridge the gap between graphic design and backend technical implementation
• - Build modular, responsive templates using modern CSS techniques
• - Translate UI/UX design wireframes to actual code
• Testing cross-browser, cross-platform, and/or cross-device compatibility for inconsistencies.

• - 2+ years of industry experience as a Front End Developer Engineer
• - Degree in Computer Science or related field
• - Experience with developing web and mobile applications
• - Extensive knowledge HTML5 / CSS3 / JavaScript / jQuery / Bootstrap / ReactJS, AngularJS
• - Strong experience in JSON/XML and REST/SOAP based Web Service based integration.
• - Experience (mandatory) with working Web Framework versions with exposure to creating components and handling AJAX calls.
• - Good to have knowledge in JIRA, GIT.
• - Strong knowledge of Client-Server Architecture.
• - Basic Proficiency with Python or relevant back-end scripting language
• - Ability to think critically and creatively in a dynamic environment, while picking up new tools and domain knowledge along the way

• - A positive attitude, and a growth mindset
• - Great attention to details

• - Experience with API testing software (e.g. Postman)
• - Good Humor

About NetElixir: 

NetElixir is a global digital marketing firm headquartered in Princeton, NJ. With a common goal of helping our customers and challenging ourselves to think differently, we face challenges and tackle them together as a team. We are a close-knit group of imaginative and friendly industry experts who bring our unique passions and personalities together to find creative solutions that drive results.

With offices in the US and India, NetElixir works persistently gathering, evaluating, computing, and formulating raw data and turning it into actionable insights for our customers. We work consistently to develop new technology that will improve and facilitate digital marketing efforts across the globe.

Role: React JS

Experience: 2 -5 Years

Company Website: http://www.netelixir.com/">www.netelixir.com 

Job Description:

To be part of Netelixir's Engineering Development Team in Digital Marketing, Consumer Insights, Analytics and Ecommerce Domains which caters to about 100 Ecommerce clients in USA & European Geographies

• Should have implemented at least 2-3 projects using React Interface (ReactJS, React Native).
• Experience with standard libraries for routing, state managers like Redux, knowledge of ES6 and Lodash.
• Familiarity with one of the design systems such as Material UI.
• Strong hands on exposure to convert visual designs to React based web interfaces
• Integration of the React with backend services.
• Exposure to building and integration of web interface with the backend service APIs implemented on Restful, SOAP etc.
• Proficiency in one or more of Java, Tomcat, MySql, MongoDB, Python, Angular, Bootstrap, JQuery, JS Frameworks, JSP, HTML5 CSS Frameworks will be added advantage. 

• Bachelor’s degree in Computer Science, Information Technology, or a similar field.
• At least 5-10 years' experience working as a React.js Developer.
• In-depth knowledge of JavaScript, CSS, HTML and front-end languages. Knowledge of REACT tools including React.js, Web pack, Enzyme, Redux, and Flux, Vuejs, Angular++, Python and latest technology skills.
• Experience with user interface design. Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software. Excellent troubleshooting skills. Good project management skills.

Key Qualifications:

5 + years of experience in Software development in multithreaded Java/Python applications

3+ years of UI/UX stack experience (Angular JS/PHP/Javascript)

Extensive experience in coding and debugging Java applications and deployment

Should have experience/exposure to Apache Tomcat, JBOSS, SOAP, REST, Maven, Spring framework, hibernate, Kafka, Zookeeper, DHCP, DNS, SNMP

Extensive experience with MySQL and various NoSQL Databases like MongoDB, Elasticsearch

Modelling languages like Netconf, Restconf, Yang,Tosca, Yaml, XML

Skilled in data center, networking, Linux and cloud technologies especially IaaS

Understanding of the ETSI NFV architecture stack

2+ experience with SDN technologies

2+ experience with OpenStack, Kubernetes or other container orchestration platform

Agile programming methodologies

DevOps - CI/ CD experience with Git, Gerritt, Jenkins

Experience contributing to and working with open source communities like ONAP, ONF