Fullstack Developer

Job Title : Full Stack Developer (Crypto Exchange)

Experience : 4+ Years

Location : Gurugram & Vadodara (On-site)

Role Overview :

We are looking for a Full Stack Developer with strong expertise in both backend and frontend development, along with exposure to crypto exchange systems or fintech platforms.

In this role, you will work on building high-performance, real-time trading applications, contributing to core systems like order execution, pricing engines, and wallet integrations.

Key Responsibilities :

• Design, develop, and maintain scalable backend services and APIs.
• Build and optimize responsive frontend applications for trading interfaces.
• Work on real-time systems such as order books, pricing engines, and trade execution.
• Integrate with blockchain networks, wallets, and third-party APIs.
• Ensure platform security, performance, and reliability.
• Collaborate with product, design, and DevOps teams for end-to-end delivery.
• Participate in system design, architecture discussions, and code reviews.

Required Skills & Qualifications :

• 4+ years of experience in Full Stack Development.
• Strong expertise in :
• Backend : Node.js and/or Python
• Frontend : React.js and/or Next.js
• Experience with REST APIs and microservices architecture.
• Strong understanding of databases (MongoDB, PostgreSQL, MySQL, etc.).
• Hands-on experience with Docker and cloud platforms (AWS preferred).
• Solid understanding of system design, scalability, and performance optimization.

Preferred (Good to Have) :

• Experience working with a crypto exchange or trading platform.
• Understanding of blockchain fundamentals (Ethereum, Bitcoin, etc.).
• Experience with wallet integrations and on-chain transactions.
• Familiarity with WebSockets and real-time data streaming.
• Knowledge of security best practices in fintech/crypto systems.

Why Join Us ?

• Opportunity to work on a high-impact, real-world crypto exchange.
• Build and scale systems from early-stage to production.
• Work in a fast-paced, ownership-driven environment.
• Exposure to cutting-edge blockchain and trading technologies.

Key Responsibilities

Develop and maintain scalable fullstack applications.

Collaborate with cross-functional teams to deliver innovative solutions.

Ensure performance optimization and adherence to best practices.

Provide technical leadership and mentorship to junior developers.

Required Skills

Proficiency in: Java, Spring Boot, MySQL, Hibernate, ReactJS

Knowledge of: NoSQL databases

Strong analytical and problem-solving skills

Location: Bangalore

Experience: 5 to 10 years

Joiners: Immediate / Notice Period < 30 days

Company: Wissen Technology

🔍 Job Overview:

We are looking for a passionate and skilled Fullstack Developer with strong backend expertise in Java and advanced frontend proficiency in React, JavaScript, and TypeScript. The ideal candidate will have a deep understanding of core computer science concepts like Multithreading, Collections, and Immutability, and should be highly proficient in building scalable, maintainable systems.

🛠️ Key Responsibilities:

• Design and develop robust, scalable backend systems using Java (preferably Java 8 or higher).
• Build interactive, high-performance UIs using React.js, JavaScript, and TypeScript.
• Implement complex business logic with clean and maintainable code.
• Write efficient, thread-safe code utilizing Multithreading, HashMaps, HashSets, and Collections.
• Work with iterators and immutability principles to build reliable data flows.
• Collaborate with product managers, designers, and QA teams in an Agile environment.
• Troubleshoot and debug production issues as needed.

✅ Must-Have Skills:

• Strong programming experience in Core Java, Multithreading, and Java Collections Framework.
• Solid knowledge of React.js, JavaScript (ES6+), and TypeScript.
• Hands-on with HashMap, HashSet, Iterators, and Immutable Data Structures.
• Experience working with REST APIs, Spring Boot, and microservice architectures.
• Familiarity with version control systems like Git and CI/CD pipelines.
• Strong problem-solving and analytical skills.

💼 Good to Have:

• Exposure to cloud platforms (AWS, GCP, Azure).
• Experience with state management tools like Redux or Context API.
• Knowledge of performance optimization and memory management in JavaScript.

We have multiple open positions for full-stack engineers to work with us on a cutting-edge eCommerce trade analysis platform.

Must have experience with:

• NodeJS
• Mern Stack
• AWS
• Experience working on SaaS applications with a large codebase

Nice to have

• Tailwind
• DynamoDB
• Chart libraries such as ChartJS

• 2-4 years of experience working with web platforms (at a corporate, startup, or digital agency)

Work Ethic & Requirements

• Experience with the development of large-scale websites and a strong understanding of web development technologies, third-party applications and platforms, and social media.
• You should be able to handle multiple projects at the same time.
• You should have the ability to motivate, support, and understand teams and easily work with everyone from our UX/visual designers to tech developers to content strategists.
• You should be motivated and organized. A proactive attitude is most important.
• Ability to effectively manage time, prioritize tasks and work within deadlines with little or no supervision
• The ability to work both autonomously and as part of a team 

Tech Skills

• Python/Django
• React JS
• Node JS

• Minimum 3+ years' experience as a software developer.
• Proficiency in JavaScript, Angular.js, HTML 5, CSS.
• Familiarity with Git.
• Linux and/or OS X experience.
• Experience consuming API endpoints.
• Good to have - Kafka/queuing system
• Should be well-versed in using multiple Databases - SQL/NO SQL,
• Should have experience using in- memory Data Bases-Redis
• Experience with Unit-Testing.
• Experience building web applications with responsive design.
• Experience with Node.js and/or other server-side JavaScript technologies and tools.
• Strong knowledge of design principles, user interfaces, web standards and usability.
• ES6, React JS/JSX, Redux, Web pack, Immutable.js.