
Position Summary: Senior Software Engineer (Full Stack) We are seeking a highly skilled Senior Software Engineer to execute our strategy preferably experienced in Financial Services/Procurement domain, to build a modern SaaS platform using latest technologies like ReactJS, Angular, Django, Python with Postgres and AWS as the platform. Athena, Lambda, Python, Spark and PowerBI. As a Full Stack Engineer, you’ll be responsible for designing, developing, and maintaining key features of our cloud-based SaaS product. You’ll work across the stack — from building rich client-side applications in ReactJS to crafting performant and secure APIs in Django. You will also play a key role in architectural decisions, DevOps integration, and driving engineering best practices across the team.
Technical Skills: Must Have: Expert – ReactJS, Django, Python, Shell Script, AWS, S3, Lambda, Postgres Significant work Experience – Jenkins, Power BI
Responsibilities:
• Design and develop end-to-end web applications using ReactJS (frontend) and Python/Django (backend)
• Build and maintain RESTful APIs and integrate third-party services
• Work with PostgreSQL to model data and write efficient queries
• Implement scalable, secure, and maintainable backend services on AWS
• Collaborate with product managers, designers, and fellow engineers to deliver new features
• Write unit, integration, and end-to-end tests to ensure code quality and reliability
• Conduct code reviews, debug issues, and optimize performance across the stack
• Contribute to DevOps workflows including CI/CD pipelines, containerization, and monitoring Internal Use Only Qualifications/Experience:
Must have - 5–7 years of full stack development experience, preferably in a SaaS or product-first environment
- Strong proficiency with JavaScript, ReactJS, and component-based architecture
- Hands-on experience with Python and the Django web framework
- Solid understanding of PostgreSQL (or similar relational databases)
- Practical knowledge of AWS services (EC2, S3, RDS, Lambda, etc.)
- Familiarity with Git, CI/CD pipelines, Docker, and Linux-based environments
- Clear communication skills and a collaborative mindset
Good to have
- Experience with performance tuning in Django or PostgreSQL - Exposure to Infrastructure-as-Code (e.g., Terraform, CloudFormation) Nice to have
- Understanding of frontend testing tools (Jest, Cypress) and backend testing strategies - Knowledge of security best practices for SaaS apps
Location: Bangalore

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer 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.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
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Key Responsibilities:
- Develop, test, and maintain dynamic web applications using React.js and related front-end technologies.
- Build responsive and interactive user interfaces with reusable components.
- Collaborate closely with UI/UX designers, backend developers, and project managers to deliver robust and scalable solutions.
- Integrate RESTful APIs and manage data flow effectively using Redux or other state management libraries.
- Optimize web applications for maximum performance, scalability, and cross-browser compatibility.
- Debug and troubleshoot issues to ensure high-quality deliverables.
- Write clean, maintainable, and well-documented code following best practices.
- Use Git for version control and participate in code reviews.
Skills Required:
- Minimum 2 years of professional experience in front-end web development.
- Strong proficiency in React.js, JavaScript (ES6+), HTML5, and CSS3.
- Experience with Redux / Context API or other state management tools.
- Good understanding of component lifecycle, hooks, and functional programming concepts.
- Familiarity with REST APIs, JSON, and asynchronous data handling.
- Knowledge of responsive design, cross-browser compatibility, and performance optimization.
- Familiarity with version control systems (Git).
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.
Role: Senior Full Stack Java Developer
Company: Feuji Software Solutions Pvt Ltd.
Mode of Hire: Permanent Position
Experience: 5 – 8 years
Work Location: Hyderabad, India
About Feuji
Feuji, established in 2014 and headquartered in Dallas, Texas, is a rapidly growing global technology services provider. With strategic locations including a Nearshore facility in San Jose, Costa Rica, and Offshore Delivery Centers in Hyderabad, and Bangalore, we cater to a diverse clientele.
Our team of 400+ talented engineers specialize in delivering cutting-edge solutions in managed cloud services, cybersecurity, product and quality engineering, and data-driven insights. Collaborating with industry leaders such as Microsoft, HP, GSK, and DXC Technologies, we empower organizations to achieve their business goals.
At Feuji, we prioritize creating 'Happy Teams' and fostering a culture of innovation, growth, and excellence.
Position Summary
The Senior Software Engineer is responsible for the design, development, quality, and release of our organization's web and mobile applications.
Essential Functions
• The Senior Software Engineer is responsible for the design, development, and release of our organization's web and mobile applications.
• Working closely with Product owners and other stakeholders to understand the business need and design software solutions to meet the product requirements
• Develops applications using Application programming interfaces (APIs) and service-oriented architecture
• Develops unit and automation test scripts under the test-driven development lifecycle
• Contributes to the coding best practices by participating in code reviews and supporting code merges and releases.
Education
• Bachelor's Degree Computer Science, Engineering, or related field preferred
Work Experience
• Typically 5+ years Hands-on object-oriented programming in Java and Javascript (UI) frameworks
Skills
• Understanding of all phases of Software development life cycle
• Software Development Experience with Java
• Experience with UI modern framework like AngularJS or ReactJS
• Experience with microservice architecture, end-to-end UI/API integration, and knowledge of API protocols like REST, gRPC, and graphQL
• Familiar with coding and testing best practices as well as ability to understand complex business problems and design high quality technical solutions.
• Knowledge about the Caching technologies and DBMS technologies like Oracle or MySQL, Postgres, MongoDB
• Strong Problem-solving, communication and organizational skills

Requisites
- Experience with software development in one or more programming languages with data structures/algorithms.
- 1-year experience in software architecture/design.
- 2 years of experience developing large-scale infrastructure, distributed systems and/or data management/storage technologies.
Key Responsibilities:
- Write and test production systems, with a broader understanding of the product.
- Review code and provide feedback. Mentor engineers to take on bigger responsibilities.
- Review and lead design discussions/reviews, with a long-term vision.
- Set high-level engineering direction, and best practices and document educational content to save engineering hours.
- Triage product or system issues. Mitigate and resolve production inefficiencies.
- Experience range – 8 to 12 years
- Good understanding of software engineering practices, SDLC.
- Ability to provide elegant and efficient design solutions
- Strong knowledge on design patterns
- Effective interpersonal skills and collaborative management style to include teamwork and team building ability
- Should have knowledge on API integration mulesoft, Apache Camel tools
- Strong knowledge on providing microservices architecture
ROLES & RESPONSIBILITIES:
- Research, programs, plans, designs, and administers building projects for clients by applying knowledge of architectural design and building materials.
- Produces conceptual plans, renderings, and documents.
- Assists in research and coordination of materials and products for project specifications
Skills Required:
Primary Skills:
- Java, Spring Boot/ Node.js- Backend
- HTML, CSS, JS, React/ Angular- Frontend
- SQL
- Mobile Application Development
Secondary Skills:
- Microservices, Design Patterns
- Cloud- AWS, Azure, GCP
- DevOps tools- Jenkins, GIT Pipeline, etc.- Anyone should be fine
- Maven
Technical Leader reporting to the CTO/CEO. Your responsibilities include the following, but are not limited to:
- Architecting, Designing and Developing Software Programmes based on requirements provided
- Designing and Developing with a high quality of code that is modular, scalable and re-usable at all times
- Promote SRE (Site Reliability Engineering) to ensure all of the services are Highly-Available and Fault Tolerant at all times
- Communicate effectively the system requirements to other software development teams
- Involve pro-actively with client and their requirements
- Evaluate and select appropriate software or hardware and suggest integration methods
- Oversee assigned programs (e.g. conduct code review) and provide guidance to team members
- Assist with solving technical problems when they arise
- Ensure the implementation of agreed architecture and infrastructure
- Address technical concerns, ideas and suggestions
- Monitor systems to ensure they meet both user needs and business goals
Introduction
At Samaaro you will be building the future of events. Our mission is to help brands reach out to their global audience in the most efficient and cost-effective way. We want to break the geographical barriers of communication and networking. As a Samaaro Web front-end developer, you'll use the latest tools and technologies available to deliver state-of-the-art software and web applications. You'll have an opportunity to drive the choice of technologies used as we transform our applications and experiment with the best new tools for the job based on upcoming industry trends. You will be able to learn new technical skills and absorb professional knowledge quickly. You'll be responsible for the complete lifecycle of software development, including designing, prototyping, implementation, testing, maintenance, and technical support, creating a productive environment for Samaarotans and our Business Partners.
Responsibilities
At Samaaro we embrace diversity and value what individuals add to our culture. We believe highly empowered teams create the best products -so we take a group of designers, developers, and business analysts, and give them free rein on how to address problems, in a "We give you a problem, you decide how to solve it" environment.
Above all, we value curiosity, teamwork, and a desire to learn. We are confident that if you
possess the right attitude, work ethic, and skillset that you could succeed in the role, even if you do not have all of the required skills.
Required Technical and Professional Expertise
• Front End Skills (min. 2 years experience) - React/Angular (React is preferable), HTML,
CSS, JavaScript.
• Back End Skills (min. 2 years experience) - Node.js
• Solid knowledge of modeling, design patterns, refactoring, unit test.
• Strong software engineering, project management knowledge & experience.
• Bachelor or master’s degree in computer science or equivalent experience.
• Excellent written/spoken communication skills in English.
• Strong communication skills.
Preferred Technical and Professional Expertise
• Experience with design thinking methods to understand personas and develop great user
design
• Demonstrated ability to operate within short release cycles
• Experience using modern collaboration tools in a highly responsive environment
• Great planning and organizational skills, good time management, with the ability to
manage and prioritize own workload and to deal with urgent deadlines and changes to
requirements
• Close teamwork and collaboration across both global and local team environments
• The ability to communicate across organizational boundaries and manage stakeholders
• A passion for creative solutions to real user needs and business problems
• Driven to achieve high levels of customer satisfaction, addressing the underlying problem
and questioning any assumptions Logical approach to problem-solving
• Meticulous attention to detail
• Highly motivated and productive, an entrepreneurial self-starter
• Demonstrable experience coaching junior members of your teams about Business Uni
- Bachelor’s degree in Computer Science, Information Technology, or a similar field.
- Previous experience working as a React.js Developer.(2-8 years)
- In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
- Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
- Experience with user interface design.
- Knowledge of performance testing frameworks including Mocha and Jest.
- Experience with browser-based debugging and performance testing software.
- should have hands-on experience in backend software development using Java.
- should have proven expertise in Spring Boot REST/Microservices.
- should have working experience with relational and NoSQL databases.








