
Company Name – Wissen Technology
Group of companies in India – Wissen Technology & Wissen Infotech
Work Location – Pune
While you may already know about Wissen and the company history, here is a quick rundown for you.
About Wissen Technology:
· 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. We help clients build world class products.
· Our workforce has 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 has grown its revenues by 400% in these five years without any external funding or investments.
· Globally present with offices 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.
· Wissen Technology has been certified as a Great Place to Work®.
· Wissen Technology has been voted as the Top 20 AI/ML vendor by CIO Insider in 2020.
· Over the years, Wissen Group has successfully delivered $650 million worth of projects for more than 20 of the Fortune 500 companies.
· We have served client across sectors like Banking, Telecom, Healthcare, Manufacturing, and Energy. They include likes of Morgan Stanley, Goldman Sachs, MSCI, StateStreet, Flipkart, Swiggy, Trafigura, GE to name a few.
Job Description:
Experience Required: 3–5years
Job Title: Application Development Engineer (Python – Backtesting & Index Platforms)
Role Overview
We are seeking a strong Python Application Engineer to help build a next-generation Index Backtesting and Rebalance Platform.
In this role, you will design and develop deterministic, scalable calculation engines that convert financial methodologies into production-grade software.
You will work on portfolio construction, rebalancing logic, and historical simulations while consuming reference and market data from Snowflake using python as your core processing tool.
Key Responsibilities
Engine Development: Design and implement modular, reusable Python components for index construction, rebalancing, and backtesting.
Large-Scale Simulation: Use Pandas, NumPy, and PySpark to run historical calculations across long time horizons and multiple index variants.
Workflow Integration: Integrate engines with orchestrators such as Airflow or Temporal using parameterized, config-driven execution.
Reference Data Consumption: Query and utilize pricing, security master, and corporate action data from Snowflake.
Quality & Reconciliation: Build automated test harnesses to validate outputs, compare against benchmarks, and guarantee reproducibility.
Performance Optimization: Improve runtime efficiency through vectorization, caching, and distributed computing patterns.
Cross-Team Collaboration: Partner with Business, Index Ops, and Platform teams to accelerate research-to-production onboarding.
Required Technical Capabilities
Python Expertise: Strong proficiency in Python application development with emphasis on clean architecture and maintainable design.
Data & Numerical Libraries: Deep experience with Pandas and NumPy; working knowledge of PySpark for distributed workloads.
Financial Computation: Ability to implement portfolio mathematics, weighting algorithms, and time-series transformations.
Config-Driven Systems: Experience building rule-based or metadata-driven processing frameworks.
Database Skills: Strong SQL and experience consuming structured data from Snowflake.
Testing Discipline: Expertise in unit testing, regression testing, and deterministic replay of calculations.
Orchestration Integration: Familiarity with Airflow, Temporal, or similar workflow engines.
Cloud Infrastructure: Solid understanding of AWS ecosystem services (S3, Lambda, IAM).
Technical Skills:
- Technical Skills:
- Python, PySpark, Pandas, NumPy, AWS (S3, Lambda), Apache Airflow, SQL, Financial Services Domain Knowledge, Strong Communication Skills.

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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We are looking for a skilled Backend Developer with strong experience in building, scaling, and optimizing server-side systems. The ideal candidate is proficient in Node.js, FastAPI (Python), and database design, with hands-on experience in cloud infrastructure on AWS or GCP.
Responsibilities:
Design, develop, and maintain scalable backend services and APIs using Node.js and FastAPI
Build robust data models and optimize performance for SQL and NoSQL databases
Architect and deploy backend services on GCP/AWS, leveraging managed cloud services.
Implement clean, modular, and testable code with proper CI/CD and observability (logs, metrics, alerts)
Ensure system reliability, security, and high availability for production environments
Requirements:
2–5 years of backend development experience
Strong proficiency in Node.js, FastAPI, REST APIs, and microservice architecture
Solid understanding of PostgreSQL/MySQL, MongoDB/Redis or similar NoSQL systems
Hands-on experience with AWS or GCP, Docker, and modern DevOps workflows
Experience with caching, queueing, authentication, and API performance optimization
Good to Have:
Experience with event-driven architecture, WebSockets, or serverless functions
Familiarity with Kubernetes or Terraform
Job Location: Gurugram, Haryana, India
Industry: Artificial Intelligence
1. Develop backend for applications in ecommerce/insurance/wealth management businesses
2. Design technically sound systems and deliver results in a fast manner
3. Building highly performant applications setting top standards in respective industries
Basic qualifications :
1. 5-7 years experience building highly performant applications in Python
2. Expertise in Python frameworks like Django
3. Familiarity with Rest of API
4. Good team handling Experience
5. Good grasp on data structures and proficiency in problem-solving
6. Knowledge of design patterns
Anyone interested send me the resume.
Worked in Python Flask framework / or similarhttps://anuntatech.turbohire.co/jobdescription/3a6dd0d3-75f4-49b7-9378-0b2b336cec36?utm_source=CareerPage">Django building REST APIs.
Worked in Linux Environment.
Would be an advantage if they have Domain knowledge in Virtualization Or Cloud platformshttps://anuntatech.turbohire.co/jobdescription/3a6dd0d3-75f4-49b7-9378-0b2b336cec36?utm_source=CareerPage">Azure, AWS, or Computer networking.
It is added advantage to have C++ Application programming.
Roles and Responsibilities
- Develop data analysis and processing engines using Python
- Develop server-side applications
- Develop and deploy applications on AWS
- Individually manage multiple projects with end-to-end oversight
- Undertake POCs on new tech stacks and integrate them in applications on a functional level
- Design small and large applications on an enterprise level
- Understand business requirements and translate them into applications
- Plan projects with complete details such as efforts, timelines, and wireframes
- Work under tight timelines
- Assist in project management of micro-innovation projects
- Create tools, templates, SOPs / training manuals, process documents etc
- Work with cross-functional / domain teams
- Work in a fast-paced and agile development environment
Desired Candidate Profile
- 3+ years of relevant experience with Object Oriented Programming.
- Expertise in Web frameworks: Django, Flask.
- Should have working knowledge in Programming: Python Advanced.
- Hands on knowledge on Source Control: GIT.
- And RESTFul Services.
- Strong knowledge of MVC / MVT framework, Apache Web Server/IIS/nginx, Docker, etc
- Proficiency in writing Web APIs / Rest APIs
- Ability to develop client server architecture applications
- Excellent understanding of relational databases such MySQL, MS SQL, and NoSQL(Mongodb)
- Strong understanding of how to connect a database with a chosen back-end language, with adequate grip over architecture
- Understanding of security-related concepts / within a server-side application
- Adequate knowledge on SDLC
and the entire internet. Our switches and routers are the backbone of large data centers that host Microsoft
Azure, Google Cloud, Facebook etc. High Frequency Traders rely on Arista to provide ultra-low latency network.
In India Arista powers the Flipkart’s Big Billion Day Sale event which has over billion transactions happening in
real time. Besides, we also provide the last mile connectivity for campus wide networking (both wired and
wireless) through our Cognitive Cloud Networking solutions. Arista disrupted the traditional infrastructure
technology by pioneering the move from hardware to Software Defined Networks, Cloud and now to greater
network visibility through telemetry and data analytics solutions. All this is possible because of the strong
product engineering innovation that is the core of Arista’s DNA. At Arista we take pride in our engineering
prowess. We hire the best engineers and give them the most complex infrastructure problems to solve. We
push for quality and not quantity. As our CTO/EVP(Engineering) Ken Duda puts it "It’s in our culture, quality is
the most important thing. Getting it right is more important than feature velocity, ship dates and new
platforms".
With over 400+ engineers in Bangalore and Pune are a big part of Arista’s technology leadership. With new
products in the offering, we are planning to strengthen the India team. If you are looking for an authentic
software engineering job where you can make a fundamental impact at the core infrastructure level, you
should be talking to us - we are looking for aptitude and attitude ; you need not have worked in wireless or
networking domains to work at Arista.
What will you get to do as a Software Engineer at Arista?
At Arista software engineers are the real deal - they do a lot more than simply writing code. You will work on
the whole development process, including:
• Suggesting and deciding what features to build
• Driving the design and architecture
• Pushing, testing, documenting the feature
• Working alongside customers in the field if needed
You will get to work with the best in your field and learn how to write amazingly reliable software - At
Arista everyone is hands-on including our managers, directors, VP’s and of course our CTO!
Are you right for this role?
Do you like coding? Does your adrenaline go up when you have difficult problems to solve? For success at
Arista all you need is:
• Strong engineering and Computer Science fundamentals
• Extensive background in algorithms and strong software architecture skills
• Fluency in one or more of these programming languages: C, C++, Python, Go, Java, JavaScript
• Hands-on experience with design and implementation in a strong product-engineering environment
• Self-driven and self-motivated - At Arista we empower engineers to work on their own with very little
supervision and management.
Why Arista?
As a great software engineer we know that you have multiple options to choose from. So why Arista? It is
because:
• Learning - A hands-on job like Arista’s is the best learning experience you can hope to get especially
when you work with peers who are equally good or better.
• Flexibility - Our engineers enjoy the utmost flexibility as we believe in judging by the output and not
by the hours worked. Our performance review process is designed to reflect this - we believe that
our best engineers know how to work and do not need to be told what to do.
• Truly global work - What we do in India is exactly the same as what we do in San Jose, Nashua,
Vancouver, Dublin, and other worldwide locations. You don’t have to move out of India to do
cutting edge software - at Arista you can do it right here.
• Large company with a start-up mind-set - We work like a start-up - less management, cost
conscious, innovating and disrupting our own products and we can go on. A mind-set that is hard to
get in $15b+ market cap public company.
We are seeking a lead Python Developer to lead the backend efforts and, in the process design, develop, and deploy its customer centric applications.
The person will have the opportunity to design and build an early stage, rapidly evolving platform from scratch and carry out these primary responsibilities -
Optimize components for maximum performance across multiple devices and browsers
Write performant REST APIs for both internal and external consumption
Build micro services and their deployment process
Work with problems of scale, leveraging technologies that are distributed in nature.
Perform code reviews
Required qualifications and must have skills
Excellent analytical and problem-solving skills
Proven-deep-expertise with Python programming (4+ years of hands-on experience in Python and backend development)
Building performant and scalable applications from scratch
Experience in working with frameworks like Django, Flask, etc.
Experience with building APIs and services using REST, SOAP, etc.
Experience with any RDBMS and strong SQL knowledge
Comfortable with Unix / Linux command line
Object-oriented concepts & design patterns
Sytem and database desinging skills
Nice to have Skills
Knowledge of other programming languages beyond Python
Familiarity with managing infrastructure on AWS/GCloud
Experience with working with/building data analytics pipleline
Familiarity with NoSQL databases
Good understanding of Docker and container platforms like Mesos and Kubernetes
Security-first architecture approach
Application benchmarking and optimization
Interpersonal Attributes
You are driven by the impact your work creates
You can answer the why behind any technological choice you make
You can work independently as well as part of a team
- At least 2-5 years of working experience in web services, preferably in Python
- Should have built and released APIs in production
- Experience working with RDBMS and NoSQL databases
- Designing thoughtful, extensible data models
- Knowledge of identifying, defining and building micro-services
- Working knowledge of GCS, AWS, Azure or any other cloud provider
- Aggressive problem diagnosis and creative problem-solving skills
- Good communication skills - written and spoken









