
* Python (3 to 6 years): Strong expertise in data workflows and automation
* Spark (PySpark): Hands-on experience with large-scale data processing
* Pandas: For detailed data analysis and validation
* Delta Lake: Managing structured and semi-structured datasets at scale
* SQL: Querying and performing operations on Delta tables
* Azure Cloud: Compute and storage services
* Orchestrator: Good experience with either ADF or Airflow

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.
Connect with the team
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Job Title : Senior Python Scripting Engineer (Testing)
Experience : 7 to 8 Years
Location : Bangalore
Employment Type : Full-Time
Job Overview :
- We are looking for a Senior Python Scripting Engineer with 4 to 5 Years of advanced Python scripting experience and 2 years of testing experience.
- The ideal candidate will be responsible for developing robust automation scripts, ensuring software quality, and collaborating with cross-functional teams to enhance product reliability.
Key Responsibilities :
- Develop and maintain advanced Python scripts for automation and software development.
- Design, implement, and execute test cases, automation scripts, and testing frameworks to ensure software quality.
- Collaborate with developers and QA teams to identify and resolve software defects.
- Optimize existing scripts and test cases to improve efficiency and accuracy.
- Work on test automation, debugging, and continuous integration pipelines.
- Maintain clear documentation for scripts, test cases, and processes.
Required Skills & Qualifications :
- 7 to 8 Years of overall experience in software development/testing.
- 4 to 5 Years of strong hands-on experience in Python scripting (Advanced Level).
- 2 Years of experience in Software Testing (manual and automation).
- Experience with test automation frameworks like PyTest, Selenium, or Robot Framework.
- Proficiency in debugging, troubleshooting, and optimizing scripts.
- Knowledge of CI/CD pipelines, version control systems (Git), and Agile methodologies.
- Strong problem-solving skills and ability to work in a dynamic environment.
Preferred Skills :
- Experience with cloud platforms (AWS, Azure, or GCP).
- Exposure to performance testing and security testing.
- Familiarity with DevOps practices and containerization (Docker, Kubernetes).
**Company Overview**
We are a VC-backed fintech startup developing an innovative online trading platform. As we scale, we're seeking a skilled Backend Engineer with expertise in Python to join our growing team and help build a robust, scalable infrastructure for our cutting-edge trading application.
We're based out of the UK and have our engineering team in India.
**Job Description**
We are looking for a backend developer who specialises in Python. Your role will focus on developing and maintaining the server-side logic, optimising performance, and ensuring seamless integration with the frontend. You’ll work closely with the engineering and product teams to deliver a high-quality, secure, and scalable platform.
**Responsibilities**
1. Develop and maintain server-side logic using Python
2. Design and implement APIs for seamless integration with frontend components
3. Optimise backend performance and scalability for high traffic and large data loads
4. Build and maintain databases, ensuring security, data integrity, and optimal performance
5. Collaborate with frontend engineers to ensure smooth integration between backend and frontend systems
6. Troubleshoot, debug, and optimise backend infrastructure
7. Implement data protection, security protocols, and authentication mechanisms (e.g., JWT)
8. Maintain and enhance real-time communication systems using WebSockets or similar protocols
**Required Skills**
1. Strong proficiency in Python and related technologies, knowledge of databases and SQL, and experience with web frameworks like Django or FastAPI
2. Strong analytical and troubleshooting skills, and the ability to solve problems
3. Good understanding of OOPs, task broking services, Queues, Redis
4. Familiarity with RESTful API design and integration
5. Strong understanding of database management (e.g., PostgreSQL, Redis) and caching strategies
6. Familiarity with modern authentication and authorization mechanisms (e.g., JWT, OAuth)
7. Proficiency in working with cloud hosting services (AWS, Google Cloud, etc.)
8. Experience with containerization and orchestration tools (Docker, Kubernetes)
9. Knowledge of real-time communication protocols (e.g., WebSockets, TCP, SSE)
10. Strong understanding of security best practices for server-side applications
11. Experience with version control (Git) and CI/CD pipelines
12. Minimum of 2-3.5 years of experience building scalable backend systems
**Perks**
1. Work From Anywhere Flexibility
2. Unlimited Leaves policy*
3. Competitive salary and unlimited growth opportunities
4. Insights on how HFT is done using cutting edge technology
If you’re passionate about building scalable, high-performance backend systems and want to be part of a cutting-edge fintech startup, we’d love to hear from you!
Hiring For SDE II - Python (Remote)
The Impact you will create:
-
Build campaign generation services which can send app notifications at a speed of 10 million a minute
-
Dashboards to show Real time key performance indicators to clients
-
Develop complex user segmentation engines which creates segments on Terabytes of data within few seconds
-
Building highly available & horizontally scalable platform services for ever growing data
-
Use cloud based services like AWS Lambda for blazing fast throughput & auto scalability
-
Work on complex analytics on terabytes of data like building Cohorts, Funnels, User path analysis, Recency Frequency & Monetary analysis at blazing speed
-
You will build backend services and APIs to create scalable engineering systems.
-
As an individual contributor, you will tackle some of our broadest technical challenges that requires deep technical knowledge, hands-on software development and seamless collaboration with all functions.
-
You will envision and develop features that are highly reliable and fault tolerant to deliver a superior customer experience.
-
Collaborating various highly-functional teams in the company to meet deliverables throughout the software development lifecycle.
-
Identify and improvise areas of improvement through data insights and research.
Primary Responsibilities
-
End-to-end ownership of product development, from design, through implementation, testing, deployment, and maintenance
-
Translating high-level requirements and end-user use cases into design proposals, decomposing complex features into smaller, short-term deliverable tasks
-
Maintaining constant focus on scalability, performance and robustness of architecture
-
Designing and implementing logging, monitoring and alerting systems for existing and new infrastructure
-
Documenting API's and architecture design
-
Mentor and guide juniors on their path to become solid developers
What we look for?
-
4+ of industry experience in technical leadership roles
-
Solid knowledge of Python, SQL, NoSQL, shell scripting and Linux operating environment
-
End-to-end experience in design and development of highly scalable enterprise and cloud data products
-
Ability to challenge and redefine existing architecture to create robust, scalable and reliable products
-
Hands-on experience with design and troubleshooting of scalable web services, queue based systems, distributed databases and streaming services
-
Experience with modern DevOps technologies such as kOps, Kubernetes and Docker, CI/CD, monitoring and autoscaling

Mandatory Criteria :
- Candidate must have Strong hands-on experience with Kubernetes of atleast 2 years in production environments.
- Candidate should have Expertise in at least one public cloud platform [GCP (Preferred), AWS, Azure, or OCI).
- Proficient in backend programming with Python, Java, or Kotlin (at least one is required).
- Candidate should have strong Backend experience.
- Hands-on experience with BigQuery or Snowflake for data analytics and integration.
About the Role
We are looking for a highly skilled and motivated Cloud Backend Engineer with 4–7 years of experience, who has worked extensively on at least one major cloud platform (GCP, AWS, Azure, or OCI). Experience with multiple cloud providers is a strong plus. As a Senior Development Engineer, you will play a key role in designing, building, and scaling backend services and infrastructure on cloud-native platforms.
# Experience with Kubernetes is mandatory.
Key Responsibilities
- Design and develop scalable, reliable backend services and cloud-native applications.
- Build and manage RESTful APIs, microservices, and asynchronous data processing systems.
- Deploy and operate workloads on Kubernetes with best practices in availability, monitoring, and cost-efficiency.
- Implement and manage CI/CD pipelines and infrastructure automation.
- Collaborate with frontend, DevOps, and product teams in an agile environment.
- Ensure high code quality through testing, reviews, and documentation.
Required Skills
- Strong hands-on experience with Kubernetes of atleast 2 years in production environments (mandatory).
- Expertise in at least one public cloud platform [GCP (Preferred), AWS, Azure, or OCI].
- Proficient in backend programming with Python, Java, or Kotlin (at least one is required).
- Solid understanding of distributed systems, microservices, and cloud-native architecture.
- Experience with containerization using Docker and Kubernetes-native deployment workflows.
- Working knowledge of SQL and relational databases.
Preferred Qualifications
- Experience working across multiple cloud platforms.
- Familiarity with infrastructure-as-code tools like Terraform or CloudFormation.
- Exposure to monitoring, logging, and observability stacks (e.g., Prometheus, Grafana, Cloud Monitoring).
- Hands-on experience with BigQuery or Snowflake for data analytics and integration.
Nice to Have
- Knowledge of NoSQL databases or event-driven/message-based architectures.
- Experience with serverless services, managed data pipelines, or data lake platforms.
About the job
The Role:
We are looking for an enthusiastic Technology Lead (Python or Node), who adopts a hands-on approach and loves to build scalable, distributed and large web / mobile products. You would be responsible for designing the architecture, reviewing the code, building the technology and deploying web/mobile applications.
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, SCRUM ceremonies, and troubleshoot to ensure uptime for live systems etc.
Requirements:
- Bachelor's degree in a technology-related field from a premier college.
- Prior 4+ years of experience in back-end development (Python/ Golang) in a start-up or a dynamic work environment.
- Good exposure in writing and optimizing SQL for high-performance systems.
- Understanding of asyncio and eventloop/ uvloop concepts. Knowledge of frameworks such as Quart/ Fastapi/ Starlette is preferred.
- Knowledge of AWS; Caching technologies like Redis, Memcache; ELK; mySQL Databases, etc.
- Strong understanding of System Design, Microservice Architecture, Kafka, Pub/Sub, Message queues, and in-memory data stores etc.
- Customer oriented, responsive to changes, and able to multi-task in a fast-paced environment.
We offer an innovative, fast paced, and entrepreneurial work environment where you’ll be at the centre of leading change by leveraging technology and creating boundless impact in the FinTech ecosystem.
- Writing efficient, reusable, testable, and scalable code
- Understanding, analyzing, and implementing – Business needs, feature modification requests, conversion into software components
- Integration of user-oriented elements into different applications, data storage solutions
- Developing – Backend components to enhance performance and receptiveness, server-side logic, and platform, statistical learning models, highly responsive web applications
- Designing and implementing – High availability and low latency applications, data protection and security features
- Performance tuning and automation of application
- Working with Python libraries like Pandas, NumPy, etc.
- Creating predictive models for AI and ML-based features
- Keeping abreast with the latest technology and trends
- Fine-tune and develop AI/ML-based algorithms based on results
Technical Skills-
Good proficiency in,
- Python frameworks like Django, etc.
- Web frameworks and RESTful APIs
- Core Python fundamentals and programming
- Code packaging, release, and deployment
- Database knowledge
- Circles, conditional and control statements
- Object-relational mapping
- Code versioning tools like Git, Bitbucket
Fundamental understanding of,
- Front-end technologies like JS, CSS3 and HTML5
- AI, ML, Deep Learning, Version Control, Neural networking
- Data visualization, statistics, data analytics
- Design principles that are executable for a scalable app
- Creating predictive models
- Libraries like Tensorflow, Scikit-learn, etc
- Multi-process architecture
- Basic knowledge about Object Relational Mapper libraries
- Ability to integrate databases and various data sources into a unified system
- Basic knowledge about Object Relational Mapper libraries
- Ability to integrate databases and various data sources into a unified system
Position : Backend Developer – SDE3 : Java/Nodejs
As part of the engineering team, you would be expected to have deep technology expertise with a passion for building highly scalable products. This is a unique opportunity where you can impact the lives of people across 150+ countries!
Responsibilities
● Own architecture, design, development, and implementation of different modules/features of the services
● Design, develop, deploy and support web applications.
● Bring in industry best practices
● Discover opportunities for performance improvements
● Recommend ways to improve reliability, efficiency and code quality
● Focus on continuous delivery and reducing complexity
● Carry out code reviews and manage pull requests within the mobile application development team
● Build applications based on micro-services architecture
Requirements
● Overall 5+ years of experience in Backend development (Java or Nodejs).
● B.E/B.Tech in CS or equivalent streams from institute of repute (IITs, NITs, BITs, IIITs or equivalent)
● Strong object oriented design skills & knowledge of design patterns
● Experience in working with data platform & data lake pipeline building is preferred.
● Experience designing & developing distributed systems involving multiple web services, databases (both SQL and NoSQL), caches, queues, etc. taking into consideration scalability, availability, fault tolerance, consistency, etc. of the overall system
● Well-aware of and enforces development best practices: Unit Tests, Code Reviews, Integration Tests, CI/CD, Monitoring, Alerting, etc







