Backend Developer

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.
• 
  

Job Title: Senior Backend Developer – Ecommerce Marketplace

Company: Bharat Agrolink

Location: Bhopal, Madhya Pradesh (On-site)

Job Type: Full-time

Experience Required: 3+ Years

About Bharat Agrolink

Bharat Agrolink is a fast-growing agri-tech ecommerce marketplace focused on connecting farmers, vendors, and distributors across India. Our platform is built to simplify agricultural commerce and bring quality agri-products closer to farmers through technology-driven solutions.

We are looking for a Senior Backend Developer who can take ownership of backend architecture, scalability, and performance of our ecommerce marketplace platform.

Key Responsibilities

Develop, maintain, and optimize backend applications for ecommerce and multi-vendor marketplace platforms.

Design and build secure and scalable REST APIs for web applications, mobile apps, and third-party integrations.

Architect and maintain clean, modular, and scalable backend systems.

Integrate and maintain payment gateways, shipping APIs, and external services.

Design, manage, and optimize MySQL and MongoDB databases.

Ensure backend performance, scalability, and security best practices.

Debug, troubleshoot, and resolve complex backend issues.

Collaborate with frontend, SEO, and operations teams to ensure smooth platform performance.

Implement automation workflows and backend improvements.

Manage deployments and server configurations.

Required Skills and Qualifications

Strong experience in PHP frameworks such as Laravel or CodeIgniter.

Hands-on experience with Node.js.

Strong command over MySQL, SQL, and MongoDB.

Solid experience in REST API development and third-party integrations.

Experience working on ecommerce or multi-vendor marketplace platforms.

Understanding of server management and deployment processes.

Knowledge of SEO-friendly backend architecture.

Strong analytical thinking and problem-solving skills.

Ability to work in a fast-paced and deadline-driven environment.

Good to Have

Experience building scalable ecommerce marketplace systems.

Experience with Docker-based deployments.

Knowledge of caching mechanisms and performance optimization.

Familiarity with Git or other version control systems.

Why Join Bharat Agrolink

Opportunity to work on a rapidly growing ecommerce marketplace.

Take ownership of backend architecture and core platform systems.

Be part of a performance-driven and growth-oriented startup culture.

Strong career growth opportunities while working on real-world scalable products.

Responsibilities:

• Setup and integrate various APIs
• Dealing with scripts written in different languages (PHP, Node.js, Python, PhantomJS, Ruby)
• Must be an R & D specialist
• Keep up-to-date with advanced concepts
• Adaptable to learn new technologies
• Knowledge on Linux and its commands
• Fast in debugging the code
• Should be a quick learner
• Good at communication

Requirements

• Minimum 3 Years of experience in PHP7
• 1 Year experience in Node.js/Python
• Good work experience in PHP7 
• Strong knowledge in OOPS.
• Proven knowledge on REST and SOAP API integrations 
• Experience in composer installations
• Strong in Javascript and Node.js concepts.
• Good knowledge of MongoDB and MySql
• Knowledge of versioning tools (SVN/GIT)
• Having knowledge on Amazon AWS and Google Cloud Platform is an added advantage
• Having knowledge of elastic search is an added advantage
• Good to have knowledge on p threads

• As a Senior Software Engineer you will work closely with the Tech Lead, and the rest of the engineering team to build and scale a data-driven platform. This role will act as a great springboard to accelerate career growth & transition into a Tech Lead level role.
• Your primary focus will be the development of server-side logic, building new services and APIs, developing UI components, supporting the maintenance of current APIs, reviewing work, and improving the performance and reliability of our systems as we rapidly scale our product and organization.
• An effective Senior Software Engineer will be a self-motivated learner; a highly creative engineer having obsessive attention towards detail and thoroughness.

Must Haves

• You’ve been building web applications professionally for 5+ years
• You’re proficient in NodeJS, TypeScript, PostgreSQL, and MongoDB
• You possess strong OOP and design pattern knowledge
• Familiar with modern engineering practices: Code Reviews, Continuous Deployment, Automated Testing, etc
• You write understandable, testable code with an eye towards maintainability and experienced with TDD (Test Driven Development)
• You’ve the ability to build RESTful APIs
• Explaining complex technical concepts to designers, support team, and fellow engineers is not a problem for you
• Well versed with the fundamentals of computer science and distributed systems

Nice-to-haves

• FrontEnd experience; have built applications in either: React, Vue, Angular, or Svelte
• Startup experience, preferably a tech startup
• Open Source contributor
• You have experience with other programming languages -- e.g. Python, Ruby, PHP, Go, C, etc.
• Passionate about/experienced with open source and developer tools
• You have a bachelor's degree in Computer Science, Engineering or related field, or equivalent training, fellowship, or work experience

Benefits

• Feel good factor / impact driven work- Be part of the journey that is creating an impact in people’s lives after retirement. The work we do has a direct impact on the size of someone’s retirement pot
• Ownership driven work- you own problems within the organisation and not an implementer of someone else’s idea. You have the ability to design solutions and work with multiple stakeholders to implement them
• Job stability- ClearGlass is very well funded by top tier VCs and can provide job stability in the COVID world
• Stock Options- we would love every employee of ClearGlass to have stock options
• Top-of-the-line gear- to help you be super-productive while working. No one likes a slow laptop
• Flexible work environment- we are working from home currently but will slowly move to a hybrid set-up; we offer support (incl. financial) to set-up your home office