Senior Fullstack Developer

Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the 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. Required Skills: • Exp. - 4 to 7 years. • Experience in Core Java and Spring Boot. • Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns. • Should have the ability to analyze, design, develop and test complex, low-latency client facing applications. • Good development experience with RDBMS. • Good knowledge of multi-threading and high-performance server-side development. • Basic working knowledge of Unix/Linux. • Excellent problem solving and coding skills. • Strong interpersonal, communication and analytical skills. • Should have the ability 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 has successfully 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 of services including 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. 

Experienced Senior Full Stack Engineer to Build & Backend for Event Ticketing Platform Using Claude Code

Overview

We have the frontend already built in Replit for both user and admin experiences. We are looking for a very experienced software engineer to design, build, and scale a production ready backend for a high concurrency event ticketing platform.

This role is for a true senior engineer who actively uses Claude Code as part of their daily development workflow, understands how to review and harden AI assisted output, and can ship systems that hold up under real world load, QA, and security testing.

This is not a prototype or demo system. This backend must be reliable, scalable, secure, and extremely well documented.

What You Will Be Building

• Backend services for an event ticketing platform

• Multi tenant architecture supporting thousands of organizers and events

• High concurrency purchase and checkout flows

• Secure user, admin, and system level access controls

• Production deployments with secrets management, middleware, and security layers

• Observability, logging, and metrics suitable for QA and load testing

• A thoroughly documented backend that future engineers can onboard into quickly

Core Engineering Requirements

• 10 plus years of professional software engineering experience

• Expert level experience using Claude Code or equivalent AI coding agents in real production workflows

• Deep experience building backends with Node.js

• Strong experience with Supabase and PostgreSQL

• Experience deploying and scaling applications on Vercel

• Proven experience extending existing codebases safely

• Strong API design and database performance fundamentals

• Ability to reason clearly about concurrency, transactions, and failure modes

Scalability and Performance Expectations

The backend must be designed to support:

• Hundreds of thousands of ticket purchases

• Thousands of concurrent users and tenants

• Large traffic spikes during on sale windows

• Load testing across all major latency percentiles including p90, p95, and p99

• Extremely low tail latency under high concurrency

• Graceful degradation and recovery under stress

You should be comfortable designing and implementing caching strategies, queue based workflows, idempotent operations, locking mechanisms, and transactional safety.

Security and Production Readiness

You must be able to:

• Set up production environments with proper secrets management

• Implement middleware for authentication, authorization, and rate limiting

• Design secure communication between frontend and backend

• Apply industry best practices for security hardening

• Prepare the system to pass penetration testing

• Maintain clean separation of concerns and least privilege access

Documentation and Developer Experience Requirements

High quality documentation is a hard requirement for this role.

You must have experience:

• Using AI powered documentation tools to generate and maintain technical documentation

• Producing clear architectural overviews and system diagrams

• Writing detailed README files and onboarding guides

• Documenting APIs, data models, and critical flows

• Keeping documentation in sync with code changes over time

We expect the backend to be easy to understand, easy to extend, and well explained for future engineers.

How We Evaluate Candidates

We are looking for engineers who can demonstrate:

• Real production systems they have built or scaled

• Clear judgment in how they use Claude Code and validate AI generated output

• Strong opinions on production readiness backed by experience

• The ability to move fast without sacrificing quality or safety

A short paid technical task may be used that involves real backend work with production quality code and documentation.

We are looking for a Node.js Lead Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.

As a MERN Stack Developer / Software Architect, you will play a crucial role in the architecture, development, and leadership of our digital products. You will collaborate closely with cross-functional teams to create exceptional user experiences, while also ensuring the scalability, security, and performance of our applications.

Responsibilities:

• Architecture and Technical Leadership: Design and develop the architectural roadmap for the website and mobile app. Lead and mentor a team of 8-9 MERN Stack developers, providing technical guidance, code reviews, and best practices to ensure high-quality solutions.
• Full Stack Development: Hands-on contribution to the development of complex features and functionalities using the MERN (MongoDB, Express.js, React, Node.js ) stack. Implement robust and maintainable code that aligns with industry standards.
• Scalability and Performance: Collaborate with the team to optimize application performance, ensuring that the platform can handle increased traffic and usage while maintaining a seamless user experience.
• Code Quality and Best Practices: Enforce coding standards, conduct regular code reviews, and implement best practices for software development. Ensure that the team follows coding, testing, and documentation standards consistently.
• Technical Evaluation: Evaluate and adopt new technologies, tools, and frameworks that can enhance the development process and overall product quality.
• Collaboration: Work closely with Product Managers, Designers, and other stakeholders to translate business requirements into technical solutions. Collaborate effectively with cross-functional teams to deliver on time and within scope.
• Problem Solving: Troubleshoot complex technical issues and provide innovative solutions to challenges that may arise during the development lifecycle.
• Continuous Learning: Stay updated with the latest trends, technologies, and best practices in the MERN stack and software architecture domain. Share knowledge and promote a culture of learning within the team.

Requirements:

• Bachelor's degree in Computer Science, Engineering, or related field. Master's degree is a plus.
• 7-10 years of professional experience in software development, with a strong focus on MERN stack development.
• Proven experience in designing and implementing scalable, high-performance web applications and mobile apps.
• Solid understanding of software architecture principles and design patterns.
• Previous experience in a leadership or technical mentorship role.
• Strong proficiency in MongoDB, Express.js, React, and Node.js .
• Experience with cloud platforms (e. g., AWS, Azure) and DevOps practices.
• Excellent problem-solving skills and a proactive attitude towards addressing challenges.
• Effective communication and collaboration skills.
• Prior experience in the health and wellness industry is a plus.

• Coding Complex Modules
• Code review and enforcing best practices
• Improve application architecture
• Constantly improve his/her own skill set
• Customisation to existing open souce and custom built applications
• Building a knowledge base of the latest programming trends, best practices and methodologies.

• B.Tech/BCA/MCA or M.Tech
• Experience into Javascript (Node.js, Angular.js/React.js)
• Experience representing work to a broader product team and other leaders, clearly and succintly articulating the goals and concepts

- Good understanding of NODE JS back-end development

- Strong understanding of Node.js and frameworks available for it

- Understanding of front-end technologies, such as React/Angular, HTML and CSS3
-Solid understanding of object-oriented development and design patterns.

- Good experience with AJAX, REST and JSON

- Experience with development practices such as Test-Driven Development and Continuous Integration
-Experience in Version Control Systems like GIT, Bitbucket
- Must have good problem solving and analytical skills.

- Must be a team player, having good communication skills, self-starter

- Ability to pick up new technology is needed.

Required Skills 

1) Good experience in React/Angular

2) Hand on Node.JS./Express JS 

3) Database : MYSQL/MongoDB 

4) Experience in Java Script, Typescript. 

5)Good experience in HTML5, CSS3, JavaScript, Jquery 

6) Experience working in an Agile environment. 

7) Good communication skills.

Stalwart Themius is currently seeking a highly motivated and experienced Project Manager to join our client's team in Mumbai. This role will involve providing virtual support to production processes in various areas of the food industry. Our client, with over 70 years of research and development experience, is known for their innovative high-tech solutions. Their intelligent sensor systems enable businesses to achieve optimal quality and efficiency in their production processes.

• Role: Project Manager:
• Experience: 10+ years overall and at least 5+ years of experience as a Project Manager
• Location: Airoli, Navi Mumbai (Hybrid)

If you have a passion for the world of intelligent machines, this exclusive opportunity is perfect for you. As a key member of the team, you will work closely with the Director of Engineering, participating in all aspects of the development cycle. Your primary focus will be fostering effective communication between different teams across locations and ensuring the delivery of a world-class product. This role is crucial and responsible for the entire Mumbai development team and delivery. The ideal candidate must have a strong background in Project Management and prior experience in team management.

Responsibilities:

• Establish and implement training processes and strategies for all technical personnel
• Analyze, plan, and develop requirements and standards for scheduled projects
• Assign and oversee daily tasks of technical personnel, ensuring active progress toward established milestones
• Conduct regular technical team meetings to assess progress
• Define clear deliverables, roles, and responsibilities for staff members involved in specific projects or initiatives
• Recruit and train exceptional employees to fill technical department positions
• Take ownership of projects and solutions within the business initiative

Mandatory Skills:

• Hands-on experience with Deployment, Docker, Node.js, ReactJS, MongoDB, and web design principles
• Strong understanding of cloud computing
• Proficiency in systems development and lifecycle methodologies
• Solid technical background with the ability to address accessibility and compatibility issues
• Familiarity with industry-standard tools for assessing work quality and providing improvement suggestions
• Excellent written and verbal communication skills
• Strong problem-solving and critical-thinking abilities
• Ability to work calmly under pressure and meet deadlines
• A team player with the capacity to work independently when necessary
• Minimum 10+ years of experience with 5+ years of people management skills and 5+ years of technical skills
• Demonstrated leadership, interpersonal, organizational, and problem-solving skills

Preferred Skills:

• Master's degree in Project Management or a related technical field
• Professional Project Management Certification from an accredited institution
• Demonstrated understanding of Project Management processes, strategies, and methods
• Experience mentoring, coaching, and developing talent in the technology department
• Excellent time management and organizational skills, with expertise in establishing guidelines for others in these areas
• Managerial experience applying analytical thinking and problem-solving skills
• A proactive approach to identifying and addressing potential challenges