Python Fullstack developer at Wissen Technology · Bengaluru (Bangalore) · 5 - 7 years · Profitable · Posted 23 Sep 2025

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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- Design and develop modern web applications using Python and React.
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- 9–11 years of experience building and maintaining production-grade web applications, with strong expertise in Python (backend) and hands-on experience with React (frontend).
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- Experience with AWS.
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- Freedom to modernize and innovate
- A flexible, learning-oriented team culture
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- Develop and maintain web applications using Python and Django.
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- Develop and maintain web applications using Python and Django.
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- Collaborate with cross-functional teams to deliver high-quality solutions.
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We are looking for a skilled Full Stack Developer with 3+ years of experience in Python and React.js to join our engineering team. The ideal candidate should have strong experience building scalable web applications, developing backend APIs, and creating responsive frontend interfaces.
Key Responsibilities
- Develop and maintain full-stack web applications using Python and React.js.
- Build scalable and secure RESTful APIs using Django, Flask, or FastAPI.
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- 3+ years of professional experience in Full Stack Development
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Bachelor’s degree in Computer Science, IT, Engineering, or a related field.
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Required Experience: 4-7 years
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We are looking for Software Engineers with deep experience in building highly scalable and reliable enterprise applications. We are looking for engineers who have experience building cloud based/cloud native solutions from scratch. This includes demonstrable expertise in an enterprise friendly backend framework. We expect the engineer to work in a team consisting of Project Managers, Designers, Data Scientists and Software Architects. This is an exciting opportunity to work in a fast paced and innovative environment along with a group of world class and entrepreneurial professionals.
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• Design and develop user-friendly web interfaces using HTML, CSS, and JavaScript.
• Utilize modern frontend frameworks and libraries such as React, Angular, or Vue.js to build dynamic and responsive web applications.
• Develop and maintain server-side logic using programming languages such as Java, Python, Ruby, Node.js, or PHP.
• Build and manage APIs for seamless communication between the frontend and backend systems.
• Integrate third-party services and APIs to enhance application functionality.
• Implement CI/CD pipelines to automate testing, integration, and deployment processes.
• Monitor and optimize the performance of web applications to ensure a high-quality user experience.
• Stay up-to-date with emerging technologies and industry trends to continuously improve development processes and application performance.
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• Bachelors/Masters in Computer Science or related subjects or hands-on experience demonstrating working understanding of software applications.
• Knowledge of building applications that can be deployed in a cloud environment or are cloud native applications.
• Strong expertise in building backend applications using Java/C#/Python with demonstrable experience in using frameworks such as Spring/Vertx/.Net/FastAPI.
• Deep understanding of enterprise design patterns, API development and integration and Test-Driven Development (TDD)
• Working knowledge in building applications that leverage databases such as PostgreSQL, MySQL, MongoDB, Neo4J or storage technologies such as AWS S3, Azure Blob Storage.
• Hands-on experience in building enterprise applications adhering to their needs of security and reliability.
• Hands-on experience building applications using one of the major cloud providers, preferably GCP.
• Working knowledge of CI/CD tools for application integration and deployment.
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Experience: 4–6 Years | Function: Engineering — Product | Location: On-site
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We’re building the next generation of AI-powered business software, and we’re looking for people who want to shape that future with us. With Lumen, we’re reimagining how users interact with CRM — moving beyond screens, menus and dashboards to an intelligent interface where users can simply ask AI to take actions, retrieve knowledge, generate insights and get work done. With Agent Studio, we’re enabling businesses to build, test and deploy their own AI agents for real-world workflows. And with Invorto, we’re bringing AI to voice, allowing businesses to create intelligent voice agents tailored to their customer and operational use cases.
What makes this especially exciting is the stage and scale of the opportunity. You’ll get to work on genuinely hard problems across LLMs, agents, reasoning, orchestration, voice AI, evaluation, reliability and enterprise security — not as isolated experiments, but as products used in real business workflows. You’ll have the opportunity to build zero-to-one, own meaningful parts of the product end-to-end, work closely with customers, experiment rapidly, and see your work reach production at scale.
Why join now? Because the playbook for enterprise AI is still being written. You won’t just be implementing someone else’s roadmap — you’ll help define the product, architecture and experiences that become that playbook. Expect high ownership, fast iteration, hard technical and product problems, direct customer impact, and the chance to build AI systems that have to work reliably in the real world — not just in a demo.
About the Role
We are looking for a Full-Stack Engineer with a strong backend bias to help build end-to-end product experiences across Lumen and Agent Studio. You will own features from database and API design through to the front-end experience, working closely with product and design to ship AI-powered experiences that real business users depend on every day.
What You’ll Do
Design and build backend services and APIs in Python that power core product and AI-agent features.
Build front-end interfaces and experiences that let users interact naturally with AI agents, insights and CRM workflows.
Own features end-to-end — from data modeling and backend logic to UI implementation, testing and release.
Work with product managers and designers to translate requirements into well-architected, scalable systems.
Integrate with LLM-based and agentic backend systems built by the AI/ML engineering team.
Optimize application performance, reliability and code quality across the stack.
Engage directly with customers and customer success teams to understand workflows, triage issues and inform roadmap decisions.
What We’re Looking For
4–6 years of professional full-stack engineering experience, with a clear backend-heavy skill set in Python.
Strong experience designing and building REST/GraphQL APIs, data models and scalable backend services.
Working proficiency with modern front-end frameworks (e.g., React) to build and integrate user-facing features.
Experience with relational/NoSQL databases, caching and cloud infrastructure.
Ability to move fast in a zero-to-one environment while maintaining code quality and system reliability.
Strong communication skills — this is a customer-facing role, and you will be expected to clearly articulate technical concepts, decisions and trade-offs to both technical and non-technical stakeholders, including customers.
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Experience building features on top of LLM or AI-agent backends.
Prior experience in CRM, SaaS or enterprise business applications.
Exposure to real-time or voice-based product interfaces.
- 6+ years of professional full-stack software engineering experience, with demonstrated ownership of production systems end-to-end (not just feature contribution within a large team).
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- Asynchronous & batch processing: Real experience with job queues (Celery, SQS, or equivalent) and designing systems that process work in parallel with proper failure isolation.
- Multi-tenant architecture: Direct experience building and securing systems that serve multiple isolated clients/tenants from shared infrastructure.
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We are hiring a Senior Full-Stack Engineer to design and scale high-performance web applications. You will drive technical decisions using React, Node.js, and TypeScript while building event-driven cloud architectures.
Key Responsibilities
- Develop scalable frontend features using React and robust backend APIs with Node.js/TypeScript.
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- 6+ years in full-stack software development.
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Mandatory (Experience 1) – Must have 3+ years of experience in Full Stack Development with hands-on experience building and deploying production-grade web applications.
2
Mandatory (Skills 1) – Must have strong hands-on experience in Python or Node.js for backend development.
3
Mandatory (Skills 2) – Must have experience developing REST APIs using frameworks such as FastAPI, Flask, Express.js or similar.
4
Mandatory (Skills 3) – Must have hands-on experience with at least one modern frontend framework such as React.js or Angular, along with JavaScript/TypeScript.
5
Mandatory (Skills 4) – Must have hands-on experience with SQL databases such as PostgreSQL, MySQL or similar.
6
Mandatory (Skills 5) – Must have experience integrating frontend applications with backend APIs and third-party services.
7
Mandatory (Skills 6) – Must have good understanding of OOP, data structures, software engineering practices and clean/testable code.
8
Mandatory (Skills 7) – Must have experience with Git/GitHub and standard development practices including code reviews and version control.
9
Mandatory (Skills 8) – Must have experience with cloud platforms such as Azure or AWS and exposure to application deployment.
10
Mandatory (Skills 9) – Must have hands-on experience with Docker/containerized applications and understanding of scalable application development.
11
Preferred (Experience 1) – Experience with Kubernetes, CI/CD pipelines and cloud-native deployments.
12
Preferred (Experience 2) – Experience with Redis/caching, asynchronous programming, microservices or distributed systems.
13
Preferred (Experience 3) – Exposure to AI/ML, Generative AI, LLM applications or RAG-based applications.
14
Mandatory (Age) - Candidate's Age should be below 28
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Mandatory ( Location ) - Candidates Only From Pune & Mumbai.
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Mandatory (Education) - Must be a B.E / B.Tech from Tier 1 Colleges (IIT, NIT, IIIT, BITS, DTU, NSUT)











