Sr. Software Engineer- Full stack

Job Title: Full Stack Developer (Java + React)

Location: Bangalore

Experience Level: 6–10 Years

Employment Type: Full-time

Job Summary-

Wissen Technology is looking for a skilled Full Stack Developer with strong experience in Java (backend) and React (frontend) to join our engineering team. You will be responsible for designing, developing, and maintaining scalable web applications, collaborating with cross-functional teams, and delivering high-quality software solutions.

Key Responsibilities

• Design, develop, and maintain robust, scalable, and secure web applications
• Build RESTful APIs using Java-based frameworks
• Develop responsive and dynamic user interfaces using React
• Collaborate with product managers, designers, and other developers to define and deliver features
• Write clean, maintainable, and efficient code following best practices
• Perform code reviews and mentor junior developers
• Troubleshoot, debug, and upgrade existing applications
• Ensure application performance, quality, and responsiveness
• Participate in Agile/Scrum development processes

Required Skills & Qualifications

• Strong proficiency in Java (8 or above) and backend frameworks such as Spring Boot
• Solid experience with React.js, including hooks, state management, and component lifecycle
• Experience building and consuming REST APIs
• Familiarity with frontend technologies: HTML5, CSS3, JavaScript (ES6+)
• Knowledge of databases such as MySQL, PostgreSQL, or MongoDB
• Experience with version control systems like Git
• Understanding of software development principles, design patterns, and data structures
• Familiarity with build tools like Maven or Gradle
• Basic understanding of cloud platforms (AWS, Azure, or GCP) is a plus

Job Description:

• 2 – 4 years of hands-on experience as a Developer in financial services
• Experience with C#/.NET
• Experience with JavaScript/TypeScript, ReactJS, and AWS Cloud technologies is a plus
• Experience with databases such as MSSQL and MongoDB is a plus
• Familiarity with concepts such as microservices, API, TDD, unit testing, and SDLC
• Knowledge of Stock Loan, Collateral margining, Swaps would be a great advantage
• Strong analytical and problem-solving skills, with the ability to think critically
• Strong written and verbal communication skills
• Experience in stakeholder management across both IT and business sectors

Key Responsibilities would include: 

1. Design, develop, and maintain enterprise-level Java applications. 

2. Collaborate with cross-functional teams to gather and analyze requirements, and implement solutions. 

3. Develop & customize the application using HTML5, CSS, and jQuery to create dynamic and responsive user interfaces. 

4. Integrate with relational databases (RDBMS) to manage and retrieve data efficiently. 

5. Write clean, maintainable, and efficient code following best practices and coding standards. 

6. Participate in code reviews, debugging, and testing to ensure high-quality deliverables. 

7. Troubleshoot and resolve issues in existing applications and systems. 

Qualification requirement - 

1. 4 years of hands-on experience in Java / J2ee development, preferably with enterprise-level projects.

2. Spring Framework including - SOA, AoP and Spring security 

3. Proficiency in web technologies including HTML5, CSS, jQuery, and JavaScript.

4. Experience with RESTful APIs and web services.

5. Knowledge of build tools like Maven or Gradle

6. Strong knowledge of relational databases (e.g., MySQL, PostgreSQL, Oracle) and experience with SQL.

7. Experience with version control systems like Git.

8. Understanding of software development lifecycle (SDLC) 

9. Strong problem-solving skills and attention to details.

AI/ML Development: Build models using open-source frameworks (e.g., PyTorch, TensorFlow). ● Zero-Cost Full-Stack Engineering: Build across the stack using cost-free tools and infrastructure. ● Security & Auth: Implement secure authentication/authorization systems using free solutions. ● AI-Augmented Coding: Utilize tools like GitHub Copilot, Cody, and Workik to 10x productivity. ● UI/UX Focus: Build clean, engaging, and fast interfaces. ● Rapid Iteration: Ship MVPs, test quickly, and improve constantly. ● Lean Infrastructure: Avoid paid services; build with open-source and free-tier tools. 

Experience: 2-3 years of experience in Python, NodeJS, MySQL, ReactJS, NextJS technologies.

About: Fletch is a U.S. based technology firm building an open insurance ecosystem

connecting consumer apps to insurance providers. The team has previously built global

payment infrastructure at scale (processing $billions in transactions) and founded enterprise

technology companies with solutions in commercial use by over 100 corporates. 

Fletch has seen rapid traction (existing partnerships with leading U.S. insurance providers)

and is backed by top global fintech VCs and angels. The team is now looking to scale

further hiring & expansion.

Location:  Remote 

Responsibilities:

-Developing complex web application features using Python, NodeJS, ReactJS, JS, MySQL, TypeScript, NextJS.

-Writing reusable, testable, and efficient code

-Implementation of low-latency, high-availability, and performant applications

-Integration of user-facing elements developed by front-end developers with server side logic

-Translating designs and wireframes into high quality code

-Optimising components for maximum performance across a vast array of web-capable devices and browsers.

Skills:

-Very strong in programming, DataStructures, Algos and complex tech concepts

-Strong in developing no-code platforms and configurable applications.

-Strong experience in developing apps using React hooks, state, DOM manipulation etc.,

-Strong experience in developing BE code using Python, Node, MySQL.

-Strong expertise working with RESTful APIs

-Strong experience in NextJS

​​ChiefEx Technologies Pvt Ltd is an early stage SAAS application startup providing an integrated technology platform to small businesses for most of their day to day activities for all of their business cycle with complete control on activities.

Our application is very flexible and its minimalistic design is loved by many customers.

The company is looking at further expanding the solution and rolling across geographies in the coming future.

Our MVP is ready and we started early traction. We are looking for passionate developers with an entrepreneurship mindset to join our team as Team Lead - MEAN Stack.

Joining as a founding team member will come with lots of benefits and opportunities to grow.

There won't be any cash benefits for at least 3 months or till we achieve revenue goals or funding. A very attractive indicative compensation will be offered with equity for the right candidate.

Right candidate will be inducted as Co-founder  / CTO.

You will be getting freedom and autonomy to perform tasks, manage and build your team and engage in cross functional activities.

This is a high growth career opportunity is only best for those who have the capability to fast grow the organisation as a High growth driver and with an Entrepreneur Mindset.

Note: DO NOT APPLY if you are looking for a traditionally paid employee safe mode opportunity. 

Responsibilities:

• Own the product development from scratch.
• Design and implementation of low-latency, high-availability, and performant applications.
• Architect scalable software solutions and mentor a team of high performing developers.
• Participate in code reviews, design reviews and troubleshooting to ensure uptime for live systems etc.

Requirements:

• Bachelor's degree in a technology-related field.
• Prior 5+ years of experience in leading full stack development (MEAN Stack) in a start-up or a dynamic work environment.
• Strong knowledge of JavaScript/Typescript and technologies like NodeJS (with Express) / Angular / MongoDb etc.
• Good understanding of System Design, Microservice Architecture, DSA, etc.
• Good understanding of CI/CD, AWS, cloud deployment, Git, etc.
• Customer oriented, responsive to changes, and able to multi-task in a fast-paced environment.

If you are a potential candidate and have some questions, please feel free to talk with us.

• Cross-platform mobile applications for Android & iOS
• Web service integration (SOAP, REST/JSON, GraphQL)
• Identification of application issues when deploying the apps
• Timely App deployment to Play Store & ios app store

Skills & Requirement:

• Minimum 2 years Experience required.
• Previous mobile app development experience using Flutter framework and DART programming is essential
• Experience with Material Design and Android UI design principles, patterns and best practices
• Experience with third party libraries and API integration experience is essential.
• Strong knowledge of Design patterns and good UI design ability
• Dynamic form building experience is essential
• Diagnose performance issues, fix bugs (including crashes) to increase the functionality of the application
• Performance optimization is required.
• Previous experience on IOT Projects will be added advantage

Work Location: 1st Sector, HSR Layout, Bengaluru - 560102

Office Timings : Monday to Saturday – 9:00AM to 6:00PM

Work From Office Only

equirements:

• Should have 3.6 - 5 Years work experience.
• Should have experience in Node. JS.
• Should have experience in HTML, CSS.
• Should have experience in JavaScript.