Backend Developer

Obs Digital Services
Amdanga, North Twenty Four Parganas
₹20,000 - ₹40,000 monthly

Fixed

₹20,000 - ₹40,000

Earning Potential

₹40,000

Work from OfficeWork from Office
Full TimeFull Time
Min. 3 yearsMin. 3 years
Good (Intermediate / Advanced) EnglishGood (Intermediate / Advanced) English

Job highlights

1 applicants

1 applicants

Benefits include:  Overtime Pay

Benefits include: Overtime Pay

Job Description

# Backend Engineer


We are looking for a skilled and motivated **Backend Engineer** to join our growing technology team. You will work on the backend systems powering our upcoming products, including a **food-ordering platform** and an **AI-powered video processing and clipping platform**.


The ideal candidate should be comfortable building scalable APIs, working with databases and background processing systems, integrating third-party services, and developing reliable production-ready software.


## Role & Responsibilities


* Design, develop, and maintain scalable backend applications using **Python and FastAPI**.

* Build and maintain REST APIs for web and mobile applications.

* Design and manage **PostgreSQL databases**, including schemas, relationships, indexes, and queries.

* Implement authentication, authorization, user roles, and secure API access.

* Develop asynchronous background-processing systems using **Celery, Redis, or similar technologies**.

* Build reliable job queues for long-running tasks such as AI processing, video processing, notifications, and other automated workflows.

* Integrate third-party APIs, webhooks, payment gateways, and external services.

* Develop backend infrastructure for multi-user SaaS applications.

* Work with large file and video-processing workflows where required.

* Build APIs and services that communicate with AI/ML and video-processing workers.

* Implement proper error handling, logging, retries, validation, and monitoring.

* Optimize backend performance, database queries, and API response times.

* Implement secure file uploads, storage, and access systems.

* Work with cloud storage and services such as S3-compatible object storage.

* Write clean, maintainable, modular, and well-documented code.

* Write unit and integration tests using **Pytest**.

* Participate in code reviews and maintain development standards using Git.

* Work closely with **AI/ML engineers, frontend developers, Flutter developers, DevOps engineers, and QA engineers**.

* Troubleshoot and resolve production issues.

* Help design the technical architecture as the products scale.


## Preferred Candidate Profile


* 3+ years of professional backend development experience.

* Strong knowledge of **Python**.

* Strong experience with **FastAPI**, Django, or similar backend frameworks.

* Strong understanding of REST APIs and backend architecture.

* Good knowledge of **PostgreSQL and SQL**.

* Experience with **Redis** and asynchronous processing.

* Experience with **Celery, RabbitMQ, Kafka, or similar queue systems**.

* Good understanding of authentication, authorization, JWT, OAuth, and API security.

* Experience with Docker and Linux.

* Strong Git/GitHub or GitLab experience.

* Experience building and integrating third-party APIs and webhooks.

* Understanding of database optimization, indexing, transactions, and query optimization.

* Experience writing automated tests with Pytest or similar frameworks.

* Understanding of cloud platforms such as AWS, Azure, or Google Cloud.

* Ability to design modular and scalable backend systems.

* Strong debugging and problem-solving abilities.

* Good communication and teamwork skills.

* Ability to work independently and take ownership of assigned features.


### Additional Advantages


Candidates with experience in any of the following will have an advantage:


* SaaS application development

* Multi-tenant architecture

* AI/ML application backends

* PyTorch inference systems

* GPU processing workflows

* FFmpeg/video-processing systems

* Large file/video uploads

* S3 or S3-compatible storage

* YouTube, Twitch, Kick, or other media APIs

* WebSockets

* Payment gateway integrations

* Subscription and billing systems

* Kubernetes

* CI/CD

* Prometheus, Grafana, or Sentry

* Distributed systems

* Event-driven architecture


## Perks & Benefits


* **Competitive salary** based on skills and experience.

* **6-day working week**.

* **Paid overtime** for additional working hours.

* Clear compensation for extra work beyond regular working hours.

* Healthy and professional **work-life balance**.

* Friendly, respectful, and collaborative working environment.

* Opportunity to work on **real-world AI, SaaS, automation, and marketplace products**.

* Opportunity to work with modern technologies including **Python, FastAPI, PostgreSQL, Redis, Docker, AI/ML, cloud infrastructure, and video-processing systems**.

* Opportunity to take ownership of major technical components of the products.

* Career growth opportunities as the company and engineering team expand.

* Learning and development opportunities.

* Performance-based growth and salary reviews.

* Supportive team culture where engineers can contribute ideas and technical decisions.

* Opportunity to work on products designed for users in international markets.


### What We Value


We value **ownership, reliability, clean engineering, continuous learning, teamwork, and problem-solving**.


We are looking for someone who doesn't simply complete assigned tickets, but understands **why the feature is being built, how it should scale, and how it should work reliably in production**.

Job role

Work location
Work locationMondouri Bazaar, JN HouseNear, Mondouri Bazaar, Palashi, Majhi Para, West Bengal, India
Department
DepartmentSoftware Engineering
Role / Category
Role / CategorySoftware Backend Development
Employment type
Employment typeFull Time
Shift
ShiftDay Shift

Job requirements

Experience
ExperienceMin. 3 years
Education
EducationGraduate
English level
English levelGood (Intermediate / Advanced) English
Gender
GenderAny gender

About company

Name
NameObs Digital Services
Address
AddressMondouri Bazaar, JN HouseNear, Mondouri Bazaar, Palashi, Majhi Para, West Bengal, India
Job posted by Obs Digital Services

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You can expect a minimum salary of 20,000 INR and can go up to 40,000 INR. The salary offered will depend on your skills, experience and performance in the interview.

The candidate should have completed Graduate degree and people who have 3 to 31 years are eligible to apply for this job. You can apply for more jobs in Kolkata to get hired quickly.

The candidate should have Good (Intermediate / Advanced) English skills and sound communication skills for this job.

Both Male and Female candidates can apply for this job.

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