Senior Python Engineer Job at Devsinc | Backend Developer

Devsinc; Lahore; On-site; PKR 2,678,000 - 5,022,000; Full time

Job summary

Devsinc in Lahore is seeking a Senior Python Engineer to lead backend development, API integrations, and system design for scalable, high‑performance applications. You will work with international clients in a fast-paced services environment.

The role requires 3+ years in Python backend development, strong English communication, and hands-on experience with Django/Flask/FastAPI, cloud platforms, containers, and CI/CD. You will design, implement, review code, and mentor juniors.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• 3+ years of professional Python backend development experience.
• Proficiency in Python, OOP, data structures, and algorithms.
• Experience with Django, Flask, or FastAPI and RESTful APIs.
• Strong understanding of system design, architecture, and scalable apps.
• Experience with relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) databases, caching.
• Cloud platforms and container tech (AWS/Azure/GCP, Docker, CI/CD).
• Excellent English communication, and ability to lead technical discussions with clients.

Responsibilities

• Design, develop, and maintain scalable Python backend applications.
• Develop and integrate RESTful APIs, microservices, and backend services using Django, Flask, or FastAPI.
• Collaborate directly with international clients to understand requirements and lead technical discussions.
• Translate business requirements into scalable, maintainable technical solutions.
• Contribute to system architecture, design decisions, and development planning.
• Design and optimize relational and NoSQL databases for performance and reliability.
• Integrate third-party APIs, cloud services, and external systems.
• Write clean, reusable, and testable code; conduct code reviews and enforce best practices.
• Take ownership of complex technical challenges, troubleshoot, and ensure timely delivery.
• Collaborate with cross-functional teams, mentor juniors, and participate in Agile processes.

Skills

Python

OOP

Data structures

Algorithms

Problem solving

English communication

Stakeholder management

Agile development

Education

Bachelor's degree in Computer Science or related field

Tools

Django

Flask

FastAPI

RESTful APIs

Microservices

AWS / Azure / GCP

Docker

Git

CI/CD

PostgreSQL

MySQL

MongoDB

Redis

Celery

RabbitMQ

Kafka

Kubernetes

Job description

Devsinc is looking for a skilled Senior Python Engineer with strong expertise in backend development, API integrations, system design, and building scalable, high-performance applications, along with a minimum of 3 years of professional experience in Python backend development, preferably post-graduation.

The ideal candidate should possess strong technical and problem-solving skills, excellent English communication abilities, and experience working directly with international clients. This is a client-facing role requiring technical ownership, effective stakeholder collaboration, and the ability to deliver quality solutions in a fast-paced, services-based environment.

Responsibilities

• Design, develop, and maintain scalable, secure, and high-performance backend applications using Python.
• Develop and integrate RESTful APIs, microservices, and backend services using Django, Flask, or FastAPI.
• Collaborate directly with international clients to understand business requirements, lead technical discussions, propose solutions, and provide project updates.
• Translate complex business requirements into scalable, maintainable, and efficient technical solutions.
• Contribute to system architecture, technical design, development planning, and technical decision-making.
• Design and optimize relational and NoSQL databases to ensure application performance, scalability, and reliability.
• Integrate third-party APIs, cloud services, and external systems to support business and application requirements.
• Write clean, reusable, and testable code, conduct code reviews, and enforce software engineering best practices.
• Take ownership of complex technical challenges, troubleshoot issues, optimize application performance, and ensure timely delivery of high-quality solutions.
• Collaborate with cross-functional teams, mentor junior developers, and actively participate in Agile development processes.

Requirements

• Bachelor's degree in Computer Science, Software Engineering, or a related field, with a minimum of 3 years of professional experience in Python backend development, preferably post-graduation.
• Strong proficiency in Python, object-oriented programming (OOP), data structures, algorithms, and problem-solving.
• Hands-on experience with Django, Flask, or FastAPI, including RESTful API development and microservices architecture.
• Solid understanding of system design, software architecture, design patterns, and scalable application development.
• Experience with relational databases (PostgreSQL, MySQL) and familiarity with NoSQL databases and caching technologies (MongoDB, Redis).
• Hands-on experience with cloud platforms (AWS, Azure, or GCP), Git, Docker, and CI/CD pipelines.
• Understanding of asynchronous programming, background task processing, and message queues.
• Experience with unit testing, debugging, application security, and performance optimization.
• Strong English communication skills, with the ability to independently lead technical discussions with international clients.
• Strong analytical, logical reasoning, and real-world problem-solving skills, with the ability to take ownership of complex technical challenges.
• Experience in client-facing development, requirement gathering, stakeholder management, and delivering technical solutions in a services-based environment.

Preferred Qualifications

• Previous experience working with US-based or international clients in a software services or IT consulting company.
• Experience with distributed systems, event-driven architecture, and high-level or low-level system design.
• Familiarity with Celery, RabbitMQ, Kafka, or Kubernetes.
• Exposure to Generative AI, LLM integrations, RAG pipelines, or AI-powered applications.
• Experience mentoring junior developers, conducting code reviews, and contributing to technical decisions.