LogoLanguage
TELCOTECH SOLUTIONS HUB (P) Ltd

Plot No. 5, Amstor House, Technopark Phase 1, Kazhakuttom, THIRUVANANTHAPURAM, KERALA , 695581

Senior Full Stack Python Developer (FastAPI + React) 5–8 Years Experienced

Closing Date:04,Sept 2026
Job Published: 18,Aug 2026

Brief Description

We are looking for a highly skilled Senior Full Stack Python Developer to design, develop, and maintain enterprise-grade web applications and API integration platforms. The ideal candidate will be responsible for developing modern web applications, designing REST APIs, integrating multiple third-party telecom vendor APIs, implementing business logic, and maintaining secure, scalable backend services. 

The role involves building and maintaining an Integration Layer (Middleware Platform) that communicates with multiple telecom providers such as Zayo, Colt, and others while exposing standardized APIs to internal business applications. 

Key Responsibilities:
Frontend Development 
Develop responsive web applications using modern JavaScript frameworks. 
Build user-friendly dashboards and quotation portals. 

Implement: 
Search, Filters, Maps, Location Search, Service Availability, Vendor Comparison
Quote Results, Price Display, Address Verification  
Integrate frontend with backend REST APIs. 
Build reusable UI components. 
Handle authentication and session management. 

Backend Development:
Develop scalable backend applications using Python. 
Develop REST APIs using FastAPI. 

Implement: 
Authentication, Authorization, Business Logic, Data Validation, Logging, Exception Handling, Rate Limiting  

Build middleware services:
Normalize vendor responses. 
Transform XML/JSON responses into common internal formats. 
Develop reusable API connectors. 

API Integration:
Integrate with external telecom APIs. 

Examples include: 
Zayo, Colt, Lumen, BT, Verizon, AT&T, Orange, NTT  

Implement: 
REST APIs, SOAP APIs, OAuth, Basic Authentication, API Keys, XML Parsing, JSON Parsing Retry Logic, Timeout Handling, API Error Handling, Pagination, Rate Limits 

Middleware Platform (Nexus) 
Develop and maintain the Nexus Integration Platform. 

Preferred Skills

Connecting with multiple external vendor APIs. 
Converting different response formats into one standard model. 
Implementing routing logic. 
Managing API credentials securely. 
Maintaining audit logs. 
Caching frequently requested data. 
Monitoring API health. 

Application Architecture 
Design scalable enterprise applications. 
Maintain loose coupling between: 
UI 
Business Logic 
Vendor APIs 
Ensure modular architecture. 
Support future vendor onboarding. 

Database 
Design relational databases. 
Write optimized SQL queries. 
Develop ORM models. 
Handle migrations. 

Security 
Implement secure coding practices. 
OAuth 2.0 
HTTPS

DevOps Work with 
Git 
GitLab 
Docker 
Linux 
CI/CD Pipelines 
Application Deployment 
Container Management 
Version Control 

Documentation and Preparation 
API Documentation, Swagger/OpenAPI, Technical Documentation, Deployment Guides, Integration Documents, Developer Documentation 

Required Skills 
Programming Languages, Python (Expert), JavaScript / TypeScript, HTML5, CSS3, SQL 

Backend 
FastAPI, Pydantic, SQLAlchemy, REST APIs, Async Programming, OpenAPI, Swagger, JWT, OAuth 
Celery (preferred) 

Frontend 
React.js, Next.js (preferred), Redux, Material UI, Tailwind CSS, Bootstrap, Axios, Responsive UI 

API Integration 
REST, SOAP, OpenAPI, JSON, XML, OAuth2, Basic Authentication, Webhook Integration, API Testing 

Database 
PostgreSQL, MySQL, SQLite, Redis 

DevOps 
Docker, Docker Compose, Git, GitLab, Linux, Nginx, Reverse Proxy, CI/CD 

Cloud (Preferred) 
AWS, Azure, Google Cloud, DigitalOcean, Hetzner

Security 
OWASP Top 10, JWT, OAuth, HTTPS, TLS, Secrets Management, Input Validation, Encryption 

Tools 
VS Code, PyCharm, Postman, Swagger, GitLab, Docker Desktop, Figma (basic)  
Telecom Experience (Preferred) 
Experience working with, Telecommunication APIs, ISP Platforms, Carrier Ethernet, Fiber Connectivity, MPLS, Internet Services, Address Validation, Connectivity Qualification 
Price Quotation APIs, Service Availability APIs 

Experience 
5–8 years of experience in Full Stack Development
Minimum 3 years of Python development. 
Minimum 2 years of FastAPI. 
Experience integrating third-party APIs. 
Experience with React. 
Experience with enterprise applications. 

Nice to Have 
Knowledge of GIS and Maps 
Google Maps API 
Geolocation APIs 
Address Verification
Azure AD 
Microsoft 365 
Graph API
MS 365 Power APPS
MS Power Automate
MS 365 Intune

Application Details:

Total Years of Experience: 
Relevant Experience: 
Current CTC: 
Expected CTC: 
Highest Qualification: 
Contact Number: 
Notice Period:

Application Instructions: For those interested in this position, please send your resume to career@telcotechsolutionshub.com with the subject "Senior Full Stack Python Developer". Resumes without the correct subject might be put on hold or rejected.