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Coding challenge Backend Exercise - Python

Hello! If you are going through this document, we're likely chatting with you about a technical role at Pectus Finance. If so, congratulations 🎉 !

TIMEBOX:    2-3 hours max. We mean it! Set at timer and hard-stop at 3 hours ⏱
LANGUAGES:  Python
FRAMEWORKS: Flask, FastApi, Serverless Frameworks, AWS Lambda Functions, API Gateway
TESTS:      nice to have, but not mandatory
DOCS:       nice to have, but not mandatory

Overview

This exercise is to implement the best possible solution as per your knowledge in the time alloted. We're evaluating your ability to take a set of requirements and spike a holistic solution that demonstrates craftsmanship, thoughtfulness and good architectural design. This is NOT a test of how well you know Python/Flask/FastApi, nor should you try to impress us with overly clever and obtuse solutions. If you want to impress us, build something that is beautiful, intuitive and easy to debug/test/extend 😃 .

Notes: Ideally your solution should have some way to run locally and test the results so we can fully analyze your efforts.

Please use expanses.csv datasets.

Exercise A: Expose an API for querying expanses data

The goal of this exercise is to design a read-only API (REST) that returns one or more records from static set of expanses (Please use expanses.csv datasets) data.

User Story: As a developer I want to

  • list expanses data via API GET request
    • Filter by one or more fields/attributes (e.g. /expanses_data?amount[gte]=1400&member_name=Sam )
    • Sort by one or more fields/attributes (e.g. /expanses_data?sort=departments&order=desc)
  • fetch a single record via GET request
    • return a sparse fieldset (e.g. /expanses_data?fields=departments,member_name,amount)
  • get total sum of expanses by departments, project_name, date and by member_name (e.g. /aggregates?by=departments or /aggregates?by=project_name or /aggregates?by=member_name ..etc)

A few quick notes on submitting Exercise A

  • Don't worry about any web application concerns other than serializing JSON and returning via a GET request.
  • The example above (/expanses_data...) is not a contract. Feel free to design the URL structure and JSON schema that you believe creates the best client/consumer experience

Submitting your exercise

  • Please send your task solutions GitHub repository link to [email protected].
  • If you have any questions related to this coding challenge, please write to Nishant /He/Him ([email protected])