Staff Backend Engineer

Emumba Inc.; Islamabad; On-site; PKR 1,200,000 - 1,800,000; Full time

Job summary

Emumba Inc., Islamabad, Pakistan, seeks a Staff Backend Engineer to design and build robust, scalable distributed systems in Python. You will develop cloud-native services in an AWS environment, focusing on backend fundamentals, performance, and security.

Responsibilities include implementing event-driven components with queues and pub/sub, building data pipelines, RESTful APIs with Flask or FastAPI, and applying IAM, encryption and authentication (OAuth/JWT).

Qualifications

• 5+ years of Python backend development experience
• Experience with distributed systems and event-driven architectures
• Experience with asynchronous/concurrent programming
• Strong testing and debugging skills across distributed architectures

Responsibilities

• Build backend logic for event-driven systems using message queues and pub/sub
• Manage concurrent tasks in distributed environments using asynchronous programming
• Design data processing pipelines across cloud storage, compute, and databases
• Optimize applications for performance and scalability through caching, async calls, and latency reduction
• Design and develop serverless applications and RESTful APIs using Flask or FastAPI
• Follow cloud security best practices (IAM, encryption, network isolation), and implement authentication mechanisms (OAuth, JWT, or managed identity services)

Skills

Python backend development

Distributed systems

Asynchronous programming

Cloud/AWS

REST APIs

Testing & debugging

Security practices

Communication

Tools

Flask

FastAPI

Job description

Staff Backend Engineer

Department: Backend

Employment Type: Full Time

Location: Islamabad, Pak

Description

We're looking for a highly skilled Staff Backend Engineer to design and build robust, scalable, and secure distributed systems. As a critical member of our engineering team, you'll use your expertise in Python to build cloud-native applications that power our core services. We currently operate in an AWS environment, and the core need is strong distributed systems and backend fundamentals.

Key Responsibilities

• Build backend logic for event-driven systems using message queues and pub/sub services, with strong data processing and file-handling logic.
• Manage concurrent tasks efficiently in distributed environments using asynchronous programming techniques.
• Design and implement data processing pipelines across cloud storage, compute, and database services.
• Optimize applications for performance and scalability through caching, async calls, and latency reduction.
• Design and develop serverless applications and RESTful APIs using Flask or FastAPI.
• Follow cloud security best practices (IAM, encryption, network isolation), and implement authentication mechanisms (OAuth, JWT, or managed identity services).

Skills, Knowledge and Expertise

• 5+ years of hands-on Python backend development experience, with solid exposure to cloud-native or serverless solutions (AWS preferred).
• Proven experience with distributed systems concepts — event-driven architecture, message queues, and scalable data pipelines.
• Hands-on experience with asynchronous and concurrent programming.
• Strong testing and debugging skills across distributed architectures.

• Exposure to GenAI tooling or LLM-based systems, particularly RAG or agentic RAG architectures, is a plus.
• Experience integrating LLM APIs into backend services or workflows.
• Familiarity with vector databases and embedding-based search.

• Builder mindset: thrives on writing, debugging, and improving production code.
• Collaborative, humble, and open to feedback.
• Strong communicator who explains design decisions clearly.
• Influences through contribution, not hierarchy.