Senior Python Engineer

Full stack Developer (Ref.ID: VRPL-FSD-Chn-0326)

No. of Positions: 2 Nos. Senior 1 No. Junior 1 No.

API Development & Architecture:

Design and develop scalable RESTful APIs using Node.js & TypeScript

Build modular, reusable, and clean backend architecture

Implement authentication & authorization (JWT / OAuth / Role-based access)

Ensure API security best practices

Write well-structured documentation (Swagger / Postman)

Real-Time Communication (Sockets):

Develop real-time features using WebSockets / Socket.io

Implement:

Live tracking

Real-time notifications

Status updates

Chat systems

Optimize socket performance and reconnection handling

Ensure scalability under concurrent user load

Database & Data Layer (PostgreSQL):

Design scalable and optimized database schemas

Write complex SQL queries & joins

Implement indexing & query optimization

Handle transactions and concurrency control

Work with ORMs like Prisma / TypeORM (preferred)

Maintain database security and backup strategies

Ensure data security and backups

Performance & Scalability:

Optimize API response times

Implement caching strategies (Redis preferred)

Design rate limiting and throttling mechanisms

Ensure system reliability & fault tolerance

Handle background jobs & queues

Deployment & DevOps Collaboration:

Deploy applications on AWS / GCP

Work with Docker containers

Implement CI/CD pipelines

Monitor logs & performance metrics

WhatsApp Business Integration:

Integrate WhatsApp Business API (Cloud / On-Premise)

Work with providers like Exotel / Twilio (preferred)

Implement Template messaging

OTP authentication

Notifications & alerts

Two-way communication

Manage webhook events and delivery tracking

Ensure compliance with WhatsApp policies

Required Skills:

Strong proficiency in Node.js

Hands-on experience with TypeScript

Strong experience in PostgreSQL

Experience building RESTful APIs

Experience with WebSockets / Socket.io

Good understanding of system design & architecture

Git version control

Knowledge of API security best practices

Preferred Skills:

Experience in real-time platforms (ride-hailing, delivery, chat systems)

Redis for caching

Message queues (Kafka / RabbitMQ / BullMQ)

Microservices architecture

Payment gateway integration

Cloud infrastructure knowledge

Soft Skills:

Strong analytical, problem-solving skills, and debugging skills

Startup mindset & ownership attitude

Ability to work in fast-paced startup environment and work independently

Good communication skills in all aspects

Role: Technical Co-Founder

Experience: 3+ years (Mandatory)

Compensation: Equity Only (No Salary)

Requirements:

Strong full-stack development skills

Experience building web applications from scratch

Able to manage complete tech independently

Startup mindset & owne

rship attitude

bout the Role

We are seeking an experienced Python Data Engineer with a strong foundation in API and basic UI development. This role is essential for advancing our analytics capabilities for AI products, helping us gain deeper insights into product performance and driving data-backed improvements. If you have a background in AI/ML, familiarity with large language models (LLMs), and a solid grasp of Python libraries for AI, we’d like to connect!

Key Responsibilities

•   Develop Analytics Framework: Build a comprehensive analytics framework to evaluate and monitor AI product performance and business value.

•   Define KPIs with Stakeholders: Collaborate with key stakeholders to establish and measure KPIs that gauge AI product maturity and impact.

•   Data Analysis for Actionable Insights: Dive into complex data sets to identify patterns and provide actionable insights to support product improvements.

•   Data Collection & Processing: Lead data collection, cleaning, and processing to ensure high-quality, actionable data for analysis.

•   Clear Reporting of Findings: Present findings to stakeholders in a clear, concise manner, emphasizing actionable insights.

Required Skills

•   Technical Skills:

o   Proficiency in Python, including experience with key AI/ML libraries.

o   Basic knowledge of UI and API development.

o   Understanding of large language models (LLMs) and experience using them effectively.

•   Analytical & Communication Skills:

o   Strong problem-solving skills to address complex, ambiguous challenges.

o   Ability to translate data insights into understandable reports for non-technical stakeholders.

o   Knowledge of machine learning algorithms and frameworks to assess AI product effectiveness.

o   Experience in statistical methods to interpret data and build metrics frameworks.

o   Skilled in quantitative analysis to drive actionable insights.

• Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement
• Collaborating with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience
• Developing ideas for new programs, products, or features by monitoring industry developments and trends
• Recording data and reporting it to proper parties, such as clients or

  • leadership

• Participating in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members
• Taking lead on projects, as

About KAFQA

At Kafqa, we are building the next generation performing arts platform. Our mission is to transform how India learns, performs & watches performing arts. Our launch services consist of technology-enabled dance classes in our proprietary studios, production facilities, and social media broadcasting & competitions.

Founder & Team

The founder is Shariq Plasticwala. He is a graduate of IIT Bombay & Stanford GSB. He was part of the founding team of Amazon India where he played a key role for over 8 years. Among his roles at Amazon, he was the CEO of Amazon’s first joint venture in India and a Board Member of Amazon’s payments business. The other members of the founding team consisted of senior executives from Shiamak Davar & Byju’s.

Background

•   At least 6+ years experience in back-end development in a fast-paced environment, working in Python & Django Framework
• Should Have experience leading a team.
•   Deep understanding of technologies used in web products, including Rest APIs
•   Sound understanding of SQL/NoSQL databases such as PostgreSQL and MongoDB.
•   Deep familiarity with UNIX, major cloud platforms (AWS, Azure), DevOps.
•   Understanding of databases, and related tools, paradigms.

Opportunity

Here are some of the things you might have to do on any given day:

•   Developing APIs and endpoints for deployments of our product.
•   Infrastructure Development such as building databases, creating and maintaining automated jobs.
•   Build out the back-end to deploy and scale our product.

About Us

Welthungerhilfe (WHH) is an international aid agency headquartered in Germany with its vision for “Zero Hunger by 2030”, the second sustainable development goal set by the UN. It has thousands of programs fighting hunger in more than 30 countries. (https://www.welthungerhilfe.org/">https://www.welthungerhilfe.org)  (https://www.childgrowthmonitor.org/">https://www.childgrowthmonitor.org).

Child Growth Monitor (CGM) is Welthungerhilfe’s digital innovation project leveraging AI to fight child malnutrition. Around 200 million children around the world are suffering from malnutrition. Malnutrition contributes to one-third of deaths of children under the age of five. In the fight against malnutrition, detection is the first important step, but this is not an easy task: Measuring children with traditional methods is still a complex, slow, and expensive task, frequently resulting in poor data and wrong assessments of the child’s health. Early detection of malnutrition becomes the key to initiating treatment, minimizing the risk of complications,

and saving lives by reducing the chances of death to a great extent.

Our solution to measure children replaces hardware (bulky measuring boards and physical scales) with off-the-shelf cell phones and AI. CGM uses augmented reality-enabled smartphones to record 3D scans of children. Artificial Intelligence is used to predict their height, weight, and middle upper-arm circumference needed to know the nutritional status of the children.

What you would do to help us save millions of children's lives

We are looking for you as an experienced Sr Software Engineer who works collaboratively with the dedicated team of tech specialists (AI, ML & Data Scientists) distributed globally have a shared responsibility for ensuring high quality and

Scalable health care product in an agile approach.

This posting concerns a full-time assignment working for Welthungerhilfe’s CGM in a freelance capacity but Full-time employment (payroll) is scheduled for the end of 2022 latest. We are in the process of setting up CGM as a registered social business from mostly January 2023 and moving all the consultants on CGM payrolls.

Responsibilities

• Designing, developing features, refinement/improving and implementing the CGM product in a secure, well-tested, and performant way.
• De-bugging of the current issues
• Collaborate with Product Management and other stakeholders within Engineering (Frontend, UX, etc.) to maintain a high bar for quality in a fast-paced, iterative environment.
• Advocate for improvements to product quality, security, and performance.
• Solve technical problems of moderate scope and complexity.
• Craft code that meets our internal standards for style, maintainability, and best practices for a high-scale Mobile app environment. Maintain and advocate for these standards through code review.
• Provide mentorship for Junior and Intermediate Engineers on your team to help them grow in their technical responsibilities and remove blockers to their autonomy.

 Requirements and skills

• Comfort working in a highly agile, intensely iterative software development process.
• Demonstrated capacity to clearly and concisely communicate about complex technical, architectural, and/or organizational problems and propose thorough iterative solutions.
• Experience with performance and optimization problems and a demonstrated ability to both diagnose and prevent these problems.
• Extensive experience in core Python (3-7yrs)
• Should have worked on Azure or any Cloud and Azure data factory or any similar data platforms
• Experience using Flask/Flutter framework
• Experience working on mobile applications/Web applications (writing flask framework)
• Knowledge of DevOps Pipeline
• Good experience in SQL database
• Working knowledge in Data engineering (ETL pipelines Result Generation Module)
• Basic understanding of front-end technologies such as Vue JS
• Working knowledge in creating predictive models for AI and ML-based features
• Tech /BE in Computer Science with a total of 7 years of software development/Programming experience.

Desired skills

• Good to have an experience in Kubernetes (opensource system)
• Good to have experience working on healthcare mobile apps (predictive analytics and image diagnostics)
• Experience owning a project from concept to production, including proposal, discussion, and execution.
• Proficient understanding of code versioning tools

Soft/Human Skills

• Positive and solution-oriented mindset.
• Excellent communication & interpersonal skills
• Self-motivated and self-managing, with excellent organizational skills.
• Ability to thrive in a fully remote organization

• Deliver features in an end-to-end manner: technical design, development, testing, deployment, and maintenance.
• Provide technical leadership and own specific areas of the platform.
• Work closely with Product Managers to translate product requirements to engineering specifications.
• Lead code review efforts and quality efforts in your area of ownership.
• Participate in product discussions, taking ownership and initiative.
• Work independently in a fast-paced environment.
• Mentored and guide junior engineers.

Must Haves:

• Minimum 2 years of working experience in Ruby on Rails/ Python/ Node.JS.
• Strong problem-solving skills, data structures, and algorithms.
• Excellent experience on databases like MySQL, PostgreSQL, etc.
• Familiarity with tools for code reviews, version control (GIT).
• A knack for writing clean, readable Ruby/ Python/Node.JS code.
• Experience in application server hosting and monitoring.
• Understanding of fundamental design principles behind a scalable application.

Nice to Have:

• Hands-on with search platforms (Solr, Elasticsearch, etc).
• Prior experience with microservices-based architecture/SOA/distributed systems.
• Able to implement automated testing platforms and unit tests.
• Experience with common AWS service EC2, RDS, S3, SES, etc.

Key Competencies:

• Building Effective Team
• Solving Problems Creatively
• Learning Agility
• Drive For Result

• 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

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