Java full stack developer

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.

Java Fullstack Developer – Job Description

We are solving complex technical problems in the financial industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting.

Experience: 5+ years

Location: Bangalore

Job Description:



• Experience in Core Java, Spring Boot.

• Experience in microservices.

• Extensive experience in developing enterprise-scale systems for global organization. Should possess good architectural knowledge and be aware of enterprise application design patterns.

• Should be able to analyze, design, develop and test complex, low-latency client-facing applications.

• Good development experience with RDBMS in SQL Server, Postgres, Oracle or DB2

• Good knowledge of multi-threading

• Basic working knowledge of Unix/Linux

• Excellent problem solving and coding skills in Java

• Strong interpersonal, communication and analytical skills.

• Should be able to express their design ideas and thoughts.

About Wissen Technology:

Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen hassuccessfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers an array ofservicesincluding Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.

Job Title: Java Tech Lead & Solution Architect

Location: Ahmedabad

Experience: 8+ years in Java technologies with 2–3 years in solution architecture.

Key Skills:

• Expertise in Java, Spring Boot, Microservices, Angular, and PostgreSQL
• Strong background in SOA and enterprise-level solutions
• Hands-on experience in leading development teams and projects
• Proficiency in creating technical documentation and solution designs
• Skilled in client interaction, technical demos, and requirement analysis

Roles & Responsibilities:

• Lead end-to-end technical delivery and ensure timely, quality output
• Design software architecture, high/low-level design, and integration plans
• Mentor team members and manage task assignments
• Conduct code reviews, manage repositories, and ensure deployment readiness
• Collaborate with stakeholders for requirement gathering and solution finalization
• Maintain project documentation and participate in audits and reviews
• Drive technical strategy, innovation, and productization of solutions

Job Requirements:

• Good with React ,Node, Express & MongoDB/Firebase
• Node JS API (Backend) Development or Firebase Cloud Function, Runtime Environment
• Express JS & Express Routing
• Mongo DB/Firebase & its Operations
• Developing Applications With React

Required Candidate profile

• Good communication skills.
• Expert knowledge of MERN technologies.
• Resolves and/or escalates issues in a timely fashion.
• Able to work in a fast-paced working environment.

1. Develop high performance mobile and web applications in Artificial Intelligence, Machine
Learning, Android, iOS and various frontend and backend technologies.

2. Create requirements, design documentation and test plans for above, adhering to
standard templates provided by the organization.

3. Write clean, maintainable, efficient code that confirms to software development
standards.

4. Well versed with multiple front end and backend technologies such as Angular, BootStrap,
Node, PHP, Spring, ReactJS, etc.

5. Understand full stack development process and is familiar with REST.

6. Can interact with client directly on requirement gathering, delivery planning and
implementation

Job Location: Thane

MUST HAVE

• Design and implementation of the overall web architecture using React.js, Node.js, Mongo DB and AWS Lambda and Python
• Must have good knowledge of API
• Deployment and maintenance of AWS infrastructure -- Kubernetes, EC2, S3, Lambda
• Ensuring the entire stack is designed and built for speed and scalability
• Integrating our front-end UI with the constructed API
• Design and implementation of continuous integration
• Working knowledge of web-based application architectures and frameworks (including React) and the way it integrates with services.

Key Skillsets

• Node.js
• React.JS
• AWS
• MongoDB