Lead Backend Engineer

Job Description: Senior Python Developer (Document Automation)

Experience: 5+ Years

Location: Pune (Work from Office)

Employment Type: Contract (6 Months + Renewable)

Compensation: Market Standards / Open

Professional Summary

We are looking for a Senior Python Developer with 5+ years of experience for a contract-based role in Pune. The ideal candidate will have deep expertise in backend systems and specialized experience in document generation and manipulation using Python libraries.

Key Responsibilities

• Develop and maintain backend services using Python.
• Implement automated document generation workflows (DOCX, PDF, etc.).
• Design and optimize data extraction and document manipulation modules.
• Ensure high performance and responsiveness of backend applications.
• Collaborate with the team to define and implement API integrations.

Technical Requirements

• Minimum 5 years of professional experience in Python development.
• Hands-on experience with Python-docx for creating and updating .docx files.
• Proficiency in document processing libraries (e.g., PyPDF2, ReportLab, or Pandas for data export).
• Strong knowledge of Python web frameworks (Django, Flask, or FastAPI).
• Experience with XML and template-based document generation.
• Solid understanding of SQL/NoSQL databases.
• Experience with version control (Git) and CI/CD pipelines.

About the Role

We are looking for a strong software engineer who actively uses AI to build better software faster. This is a backend-heavy engineering role where LLMs and AI systems are integrated into real production applications.

You will design, build, deploy, and maintain AI-enabled systems, while maintaining strong engineering discipline and code quality.

Key Responsibilities

• Architect and build scalable backend systems (Python / FastAPI preferred)
• Integrate LLM APIs, RAG pipelines, and AI workflows into production applications
• Deploy and maintain containerized applications on AWS/Azure
• Use AI coding assistants and agents to accelerate development, without compromising code quality
• Convert ambiguous requirements into production-ready systems

Must-Have Skills

• 7+ years of professional software engineering experience
• Strong Python backend experience
• Experience building REST APIs and production systems
• Solid understanding of system design and clean architecture
• Hands-on experience with Docker and Linux
• Experience deploying to AWS or Azure
• Experience integrating LLM APIs into applications
• Experience with embeddings / vector databases / RAG pipelines
• Strong Git and collaborative development workflows
• Ability to operate independently in ambiguous environments

Most importantly:

• Strong engineering fundamentals
• High ownership mindset
• Comfort using AI tools to move fast
• Discipline to maintain structure and quality

Good-to-Have

• Experience with real-time streaming or WebSockets
• Kubernetes deployment experience
• Experience in a fast-paced startup or consulting environment
• Familiarity with agent frameworks or voice/multimodal systems

Screening Requirement

Please include:

• A portfolio of systems you’ve built (especially AI-enabled systems), and
• A short note explaining how you use AI tools in your development workflow.

We are specifically looking for engineers who lean into AI agents and coding assistants, but still understand architecture, performance, and clean code.

Experience: 6+ Years

Location: Chennai & Pune

Work Model: Hybrid

Notice Period: Immediate Joiners Preferred

Role Overview

We are looking for a highly skilled Senior Python Engineer to design, develop, and scale robust backend systems and data-driven applications. The ideal candidate should have strong problem-solving skills, experience with modern Python frameworks, and exposure to cloud and emerging technologies like Generative AI and LLMs.

Key Responsibilities

• Design, develop, and maintain scalable applications using Python
• Build and optimize RESTful APIs using Flask or FastAPI
• Work on data manipulation, processing, and transformation using Python libraries
• Collaborate with cross-functional teams to define and deliver high-quality solutions
• Develop efficient, reusable, and reliable code with strong attention to performance
• Implement containerization and orchestration using Docker and Kubernetes
• Ensure application security, data protection, and compliance best practices
• Manage code versioning using Git and follow CI/CD best practices
• Contribute to cloud-based deployments and infrastructure
• Explore and implement solutions using Generative AI and Large Language Models (LLMs)

Required Skills & Qualifications

• 6+ years of hands-on experience in Python development
• Strong understanding of Python fundamentals and problem-solving skills
• Experience with data manipulation libraries (e.g., Pandas, NumPy)
• Expertise in building REST APIs using Flask or FastAPI
• Solid understanding of ORM frameworks (e.g., SQLAlchemy, Django ORM)
• Experience with cloud platforms (AWS, Azure, or GCP)
• Hands-on experience with Docker and Kubernetes
• Strong knowledge of application security principles
• Proficiency in Git and version control practices
• Exposure to Generative AI concepts and working with LLMs

What We’re Looking For:

• Strong experience in Python (5+ years).
• Hands-on experience with any database (SQL or NoSQL).
• Experience with frameworks like Flask, FastAPI, or Django.
• Knowledge of ORMs, API development, and unit testing

You have 3 to 14 yrs of software engineering & product delivery experience with strong

background in datastructures & algorithms

• You’ve proven software development credentials having successfully built complex

products

• You are experienced with one or more general programming languages (e.g. Java, C/C++,

Go). Ability to learn other coding languages as needed.

• You’ve proven software development credentials having successfully built complex

products

• You have a strong foundation in the fundamentals of computer science, with familiarity in

data structures, algorithms and a strong command of object-oriented principles.

• You have experience in one or more of the following areas: Server Backend, Distributed

and Parallel Systems, Full Stack Development (frontend and backend), Scalable Enterprise

Platforms and Applications, Application Security and Incident Management, Android,

iOS, and Machine Learning.

• You have a spark that separates you from the crowd and ability to think out of the box and

on your feet

• You possess multi-dimensional skills that make you a valuable co-worker in a fast,

changing and ambiguous environment

• You have the ability to learn other coding languages as needed real quick

• You are comfortable in working with a team that deals with ambiguity every day

Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.

As a senior software engineer, you will work on our python based ORM and applications that scales to handle millions of transactions every hour. This is mission critical software and your primary focus will be building robust and scalable solutions that are easy to maintain.

In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product are important.

What You’ll Do:

• Own definition and implementation of API interfaces (REST and GraphQL). We take pride in our 100% open API with over 600 endpoints.
• Implement simple solutions to complex business logic that enables our merchants to manage financials, orders and shipments across millions of transactions.
• Build reusable components and packages for future use.
• Translate specs and user stories into reviewable, test covered patches.
• Peer review code and refactor existing code.
• Integrate with our eCommerce partners (Shopify, BigCommerce, Amazon), shipping partners (UPS, USPS, FedEx, DHL) and EDI.
• Manage Kubernetes and Docker based global deployment of our infrastructure.

Requirements We’re Looking for Someone With:

• Experience working with ORMs like SQLAlchemy or Django (2-3 years)
• Experience with SQL and databases (Postgres preferred)
• Experience in developing large server side applications and microservices
• Ability to create high quality code
• Experience with python testing tools (pytest) and test automation
• Familiarity with code versioning tools like GIT
• Strong sense of ownership and leadership quality
• Experienced in the tools of our web stack- Python, Celery, Postgres, Redis, RabbitMQ

Nice to Haves:

• Prior experience at a growth stage Internet/Software company
• Experience with ReactJS, Google Cloud, Heroku
• Cloud deployment and scaling experience

Responsibilities

Write effective, scalable code

Develop back-end components to improve responsiveness and overall performance

Integrate user-facing elements into applications

Test and debug programs

Improve functionality of existing systems

Implement security and data protection solutions

Assess and prioritize feature requests

Coordinate with internal teams to understand user requirements and provide technical solutions

Requirements

Work experience as a Python Developer

Expertise in at least one popular Python framework (experience in Flask preferred)

Knowledge of object-relational mapping (ORM)

Familiarity with front-end technologies (like JavaScript and HTML5)

Team spirit

Good problem-solving skills

BSc in Computer Science, Engineering or relevant field

Basic Qualifications

Candidates for this role must have:

• Bachelor’s degree in computer science or a related field
• At least three years of experience writing production code of increasing complexity
• Strong understanding of computer science fundamentals, including algorithms, complexity analysis, data structures, problem solving, and object-oriented analysis and design
• Proficiency in at least one of the following: Java, C, C++, C#, Ruby, Scala, Python
• Experience refactoring code and evolving architectures
• Experience crafting unit, integration, functional and regression tests

 Preferred Qualifications

• Master’s degree in computer science or a related field
• Experience developing in a Linux environment
• Experience applying service-oriented architecture techniques to production use cases
• Experience in developing secure, multi-platform mobile applications

• Expert knowledge of computer science, with strong competencies in data structures, algorithms,

  and software design.

• Strong understanding of end-to-end architectures and development frameworks; knowledge

  across tiers in a multi-tier cloud environment including load balancers, web servers, application

  containers, data stores, and distributed caches.

• Minimum 6 years of experience with deep technical knowledge and hands on skills in Java.

• Has worked extensively on caching technologies such as Redis, memcache.

• Should be strong with Data Strcutures, Algorithms & OOPs concepts.

• Worked on NoSQL databases such as MongoDb.

• Designed and developed highly scalable multi-threaded large scale distributed systems.

• Well versed with services and micro-services architecture.

• • Usage of containers, virtual machine systems, cloud computing.

   

Why join the navy when you can be the pirate?

Get onboard this ship & let's make KYC and onboarding easier than ever!

We want to ensure that our tech is successfully consumed by end users easily.

We are looking forward to work with you.

We would love to have you for the following reasons :

• Strong hold in python based backends such as Flask & Django
• Knowledge of backend principles, patterns, and best practices
• Aware of the open-source ecosystem and the libraries available.
• Proficient understanding of Git
• Must have written Unit, Integration and UI Test Cases
• Understanding of Cloud hosting (AWS,Azure) principles and interface guidelines
• Experience in working with distrubuted data using REST APIs, JSON and other technologies
• Potential interns with experience in containers will hold an advantage.
• Experience in Kafka & ELK will be an advantage.
• Experience of 1-2 years.