Sr.-Backend Developer

Letitbex AI; Hyderabad; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

Letitbex AI in Hyderabad is seeking a senior backend engineer to join our fast-growing, AI-driven technology team. You will architect and implement scalable Python services, REST APIs with FastAPI, and robust microservices, shaping production-grade software across cloud and data layers.

The ideal candidate has 8+ years in software development, strong OOP, SOLID, CI/CD, Git workflows, and security best practices (OAuth2/JWT).

Qualifications

• Bachelor’s or master’s degree in computer science, software engineering, or related discipline.
• 8+ years of software development experience with Python backend.
• Strong experience building REST APIs with FastAPI and Uvicorn.
• Experience with microservices, distributed systems, and API-first design.
• Proficiency in OOP, SOLID, design patterns, and clean code.
• Experience with asynchronous programming, DI, API validation, error handling.
• Security knowledge including OAuth2, JWT, OIDC; OWASP principles.
• Observability, logging, monitoring, performance tuning, and root-cause analysis.
• Git, PRs, branching strategies, collaborative workflows.
• CI/CD and automated release processes; PyTest testing mindset.
• Experience with SQL/NoSQL databases, data modeling, and query optimization.
• Ability to lead technical initiatives and collaborate in Agile teams.

Responsibilities

• Architect and implement scalable Python backend services.
• Develop REST APIs using FastAPI, ensure API-first design.
• Lead microservices and distributed system initiatives with BFF principles.
• Ensure security best practices and perform vulnerability remediation.
• Implement CI/CD pipelines and automate testing with PyTest.
• Collaborate in cross-functional Agile teams to deliver production-grade software.

Skills

Python backend

REST APIs

OOP

SOLID principles

Asynchronous programming

Design patterns

OAuth2/JWT

Security best practices

Git workflows

CI/CD

Agile teams

Education

Bachelor's degree in computer science

Master's degree in computer science

Tools

FastAPI

Uvicorn

SQL / NoSQL databases

Testing with PyTest

CI/CD pipelines

Job description

Letitbex AI is a fast-growing AI-driven technology company focused on building intelligent, scalable, and enterprise-grade solutions. We work at the intersection of AI, data engineering, cloud, and business transformation, helping organizations unlock real value from artificial intelligence.

Experience: 8+ Years

Notice Period: Can be considered up 15 Days

Qualification/s

Bachelor’s/master’s degree in computer science, Software Engineering, Information Technology, or a related discipline.

Technical Expertise

• Strong hands-on software development experience in Python backend development.
• Extensive experience developing REST APIs using FastAPI, Uvicorn, and modern Python ecosystem frameworks.
• Strong understanding of microservices, distributed systems, API-first design, and Backend-for-Frontend (BFF) architecture.
• Proficiency in Object-Oriented Programming (OOP), SOLID principles, design patterns, and clean code practices.
• Solid experience in asynchronous programming, dependency injection, API validation, exception handling, and performance optimization.
• Strong knowledge of web application security including OAuth2, JWT, OpenID Connect, SSO, secure coding practices, OWASP principles, and vulnerability remediation.
• Strong knowledge in Logging, Monitoring & Troubleshooting – Production support, observability, performance tuning, and root-cause analysis.
• Hands-on experience with Git, branch management strategies, pull requests, and collaborative development workflows.
• Experience building and maintaining CI/CD pipelines using modern DevOps tools and automated release processes.
• Hands-on experience in testing frameworks such as PyTest and automation of units, integration, API, and regression testing.
• Experience with SQL /NoSQL databases, data modeling, query optimization, and backend data management.
• Strong debugging, analytical, and problem-solving skills with the ability to diagnose issues across applications, infrastructure, and deployment layers.
• Experience independently leading technical initiatives and delivering production grade software solutions
• Excellent collaboration and communication skills within cross-functional Agile teams.