Senior Python Developer

Job Title: Python Backend Engineer (Full-time)

Location: Gurgaon, Onsite

Working Days: 5 days

Experience Required: 4+ Years

Interview: Screening and Face-to-face Interview

Job Summary

We are looking for a Python Backend Engineer with strong experience in FastAPI/Django and hands-on exposure to MLOps and LLMOps. You will work on building APIs, deploying ML/LLM models, and enabling intelligent systems using modern AI tools and frameworks.

Responsibilities

• Build and maintain scalable backend systems using Python, FastAPI, or Django
• Deploy and manage ML models (e.g., OpenCV, scikit-learn) and LLMs in production
• Develop APIs for ML/LLM inference and support RAG pipelines
• Implement model versioning, CI/CD, and monitoring for production use
• Collaborate with AI teams to integrate models into applications

Skills Required

• Strong Python backend development (FastAPI/Django)
• Experience with ML libraries: scikit-learn, OpenCV, NumPy, Pandas
• MLOps tools: MLflow, DVC, Airflow, Docker, Kubernetes
• LLMOps tools: LangChain, LlamaIndex, RAG pipelines, FAISS, Pinecone
• Integration experience with OpenAI, Hugging Face, or other LLM APIs
• Familiarity with CI/CD tools (GitHub Actions, Jenkins)

Python with Fast API Developer:

4+ years development experience on Python engineering with Fast API.

Good hands on experience on Docker .

Experience on REST API, Flask API, Fast API is must

Experience on Writing on effective and scalable code

.Experience on Unit Testing using PyTest or equivalent framework

Experience on Multi threading & Authentication/authorization techniques.

Experience on Cloud AWS services.

Experience on Postgres.

Experience in working as python 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. 

We are seeking a highly skilled Backend Developer to join our team and contribute to the development and improvement of both our customer-centric SaaS platform and internal systems. As a Backend Developer, you will be responsible for designing, implementing, and maintaining the server-side logic of our application, ensuring high performance, scalability, and security.

As a Backend Developer with expertise in Java, and PostgreSQL, you will play a critical role in developing and maintaining the backend infrastructure of our SaaS and internal platforms, ensuring its reliability, scalability, and performance. Join our team and be a part of building cutting-edge software solutions that empower our customers and drive business growth.

Responsibilities:

• Collaborate with cross-functional teams, including front-end developers, product managers, and designers, to understand project requirements and translate them into technical specifications.
• Design and develop server-side logic, APIs, and database schema to support the functionality and performance requirements of our SaaS platform.
• Write clean, modular, and well-documented code using any relevant programming language preferably Java with SpringBoot.
• Optimize the backend systems for maximum speed and scalability, ensuring high performance and responsiveness of the application.
• Implement data storage solutions using PostgreSQL or other relational databases, ensuring data integrity and security.
• Conduct thorough testing and debugging to identify and resolve any issues or bugs in the backend code.
• Stay up-to-date with emerging technologies, industry trends, and best practices in backend development and contribute to the continuous improvement of our development processes.

Requirements:

• Proven work experience as a Backend Developer or similar role, with a focus on server-side development.
• Proficiency in working with relational databases, particularly PostgreSQL, and writing efficient SQL queries.
• Familiarity with SaaS concepts and architecture.
• Experience with API design and development, including RESTful APIs.
• Solid understanding of software development principles, including object-oriented programming, design patterns, and data structures.
• Experience with version control systems, such as Git.
• Strong problem-solving and analytical skills, with keen attention to detail.
• Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.
• Bachelor's degree in Computer Science, Engineering, or a related field is preferred, but not mandatory.

Job Description:

Engage in code design, testing, integration, deployment, and enhancements

Write high-quality code and take responsibility for tasks

Solve performance bottlenecks

Communicate and collaborate with product manager, QA, and UI/UX teams

Deliver with quality, on-time in a fast-paced start-up environment

Have a strong sense of code quality

Candidate Profile:

Bachelor’s/Master’s degree in Engineering, Computer Science (or equivalent experience)

At least 5+ years of relevant experience as a back-end engineer

Excellent Java and object-oriented development skills

Experience in building and scaling microservices

Strong problem-solving skills, technical troubleshooting, and diagnosing

Solid knowledge of RDBMS and NoSQL technologies

Experience in developing back-ends for enterprise systems

Knowledge of debugging performance and optimization techniques

Experience in Java, Mongo, MySQL, AWS technologies, ELK stack, Spring boot, Kafka

Good knowledge of cloud technologies eg. AWS

Demonstrated ability to deliver in a fast-paced environment

Job Description:

Candidate must have 2 to 5-years of experience in various phase of development of a python-based application or API development.

Requirements:

Must Have:  Strong expertise in PYTHON and its built-in data structures, developing API using flask or fastapi, data wrangling using standard python frameworks like pandas, NumPy etc., integration of various applications (third party or inhouse) with python.

Good to Have: Deployment using Nginx, GUnicorn, IIS, docker and Kubernetes etc. Good understanding of optimization solutions like differential evolution. Hands on experience with python packages like Scipy.  Tkinter to make python-based applications.

Roles and Responsibilities:

• Understanding/gathering the requirements from stakeholder, formulating the problem, and leveraging AI/ML to solve the business problems.
• Integration of third party or in house application with python solution.
• Working on Deployment and optimization of various engineering problems using Numerical/Constraint optimization frameworks such as Differential Evolution and deploy a web-based API using Flask and Nginx/IIS.
• Unit testing of various python modules developed and testing of the API.

YOUR RESPONSIBILITIES

• Development and unit testing of web applications including back-end (microservices), maintenance & level 3 support of the same
• Assist Project Managers, Business Analysts, and Tech Lead in project planning (provide estimates, risk analysis, requirements analysis, technical options)
• Software Architecture
• Involvement in full life cycle of projects (including requirement analysis and system design, development and support if required)
• Support and work collaboratively with teams across areas of design, development, quality assurance and operations
• Commit your knowledge and experience into team success
• A small amount of travel (when needed) to work with other offices
• Attend meetings to discuss and demonstrate solutions at both technical and business level

 REQUIRED SKILLS AND EXPERIENCE                                                                                                           

• 5+ years web application development experience
• 3+ years developing with Python
• 3+ years developing with C# and .NET Framework 4.x
• Experience with ASP.NET MVC, ASP.NET WebAPI 2, LINQ, and WCF
• Dependency Injection and other common ASP.NET MVC design patterns
• Experience with API design and development using REST
• Experience with performance optimization
• Experience integrating security best practices into the SDLC
• Experience with object-oriented programming (OOP) and OOP patterns
• Experience with Git
• 1+ years of Agile development experience
• Experience manipulating and working with data in a variety of forms: csv, xml, json, structured and unstructured                                                                                                
• Experience with SQL database schema design and querying. Microsoft SQL Server and PostGreSQL are used and preferred.

DESIRABLE SKILLS AND EXPERIENCE                                           

• Knowledge of JIRA, Bamboo, Confluence, or BitBucket is a plus.
• Experience with a JavaScript MVVM library such as Web Components, knockout.js, Angular, React, etc. is a plus (Web Components and knockout.js are used and preferred)
• Experience with HTML5/CSS3/JavaScript/ and AJAX is a plus
• SPA (Single Page Application) design and implementation is a plus
• Experience with any ORM such as Entity Framework or NHibernate is a plus (NHibernate is preferred)
• Experience with TypeScript is a plus
• Experience with MS Build is a plus
• Experience with CI/CD is a plus
• Experience with Object Mapping Frameworks (AutoMapper, etc) is a plus
• Understanding of OOD, DDD and TDD is a plus
• AWS-based development is a plus
• Knowledge of Flask is a plus.

PERSONAL SKILLS

• Clever personality
• Strong spirit skills set: conflict resistant, self -motivated, result-oriented, responsible, honest, “open”, courageous