Golang+Python Developer

Calsoft; Pune District; Hybrid; INR 1,200,000 - 2,400,000; Full time

Job summary

Calsoft is seeking a hands-on Backend Developer with strong Go and Python expertise to design and build scalable backend systems. You will work on production-grade services, APIs, and system architecture, delivering reliable and efficient code.

The role emphasizes performance, clean testing, and collaboration with cross-functional teams. 5-8 years of backend experience and solid understanding of RESTful APIs, databases, and security are required.

Qualifications

• 5-8 years of backend development experience
• Hands-on coding with Go and Python
• Strong API design and system architecture understanding
• Experience building scalable backend services/microservices
• Knowledge of SQL/NoSQL databases and security principles

Responsibilities

• Design, develop, and maintain robust backend services and APIs
• Write high-quality, production-ready code in Go and Python
• Build scalable and reliable systems focusing on performance and efficiency
• Collaborate with cross-functional teams to deliver end-to-end solutions
• Debug, optimize, and improve existing systems; ensure best practices in code quality, testing, and maintainability

Skills

Go programming

Python

REST API design

Concurrency

Goroutines

Tools

Docker

Kubernetes

Django

Django REST Framework

Flask

FastAPI

gRPC

Prometheus

Job description

Description- Job Title: Backend Developer (Golang + Python)

Interview Process:

1. Online Assessment
2. L1 Technical
3. Client Interview (F2F in Calsoft Office Mandatory)
4. Manager Discussion
5. HR Discussion

Role Overview: We are looking for a highly hands-on Backend Developer with 58 years of experience in Golang and Python to design and build scalable backend systems. This role requires strong coding expertise, problem-solving skills, and the ability to work on production-grade systems. You will be actively involved in writing clean, efficient code, designing APIs, and contributing to system architecture for high-performance applications.

Key Responsibilities

• Design, develop, and maintain robust backend services and APIs
• Write high-quality, production-ready code in Golang and Python
• Build scalable and reliable systems with a focus on performance and efficiency
• Collaborate with cross-functional teams to deliver end-to-end solutions
• Debug, optimize, and improve existing systemsEnsure best practices in code quality, testing, and maintainability

Core Technical Requirements - Golang (Primary Focus)

• Strong hands-on experience in Go programming
• Deep understanding of: Goroutines and concurrency patterns Channels and synchronization (mutexes, wait groups, etc.)
• Proven experience in building backend services or microservices using Go
• Strong coding skills with emphasis on: Performance optimization
• Error handling Writing clean, maintainable code
• Good understanding of REST API design
• Familiarity with gRPC and Prometheus (good to have, not mandatory)
• Python Strong experience in backend development using Python
• Hands-on experience with frameworks such as: Django / Django REST Framework Flask FastAPI
• Experience building and maintaining RESTful APIs
• Strong understanding of: Database design (SQL/NoSQL) API security, authentication, and authorization
• Ability to write efficient, scalable backend logic

Additional Skills (Preferred)

• Experience with Docker and Kubernetes
• Exposure to cloud platforms (AWS / Azure / GCP) Understanding of CI/CD pipelines
• Experience with distributed systems and messaging queues
• Familiarity with observability tools (logging, monitoring tracing)

What Were Looking:

• For Strong emphasis on hands-on coding and problem solving
• Ability to work in a fast-paced, product-driven environment
• Solid understanding of system design and backend architecture
• Ownership mindset and attention to detail
• Experience 5-8 years of relevant backend development experience
• Demonstrated experience in building and scaling real-world systems