Backend Python Developer
VectorStack
About the role
Job Title: Backend Python Developer
Location: Bangalore
Employment Type: Full-Time
Experience Required: 5 – 7 years (Mid-Level)
About VectorStack
VectorStack is a tech-innovation company driving digital transformation and business performance through cloud, AI/ML, software development, and consulting. We partner with clients across Retail, FinTech, EdTech, AdTech, and more to build scalable, secure, and future-ready technology stacks.
Key Responsibilities
Architect, build, and maintain backend services, APIs, and microservices using Python (Flask / FastAPI).
Design and optimize CRUD operations across relational and non-relational databases (MongoDB, SQL, PostgreSQL, MySQL).
Model and maintain data schemas, indexes, constraints, and relationships.
Ensure robust error handling, logging, and API validation.
Optimize backend endpoints for performance, scalability, and latency.
Integrate services with authentication, rate limiting, caching, and versioning.
Deploy, manage, and monitor backend services on AWS (EC2, Lambda, S3, RDS, IAM, CloudWatch).
Write unit tests, integration tests, and conduct code reviews.
Maintain API specs, data models, and architecture documentation.
Collaborate with frontend, DevOps, QA, and product teams for end-to-end delivery.
Stay updated with technology trends and mentor junior engineers.
Required Skills & Qualifications
4–6 years of backend software development experience.
Strong proficiency in Python with hands-on experience in RESTful APIs and microservices.
Proficiency with Flask and FastAPI frameworks.
Strong database knowledge: MongoDB and at least one relational DB (PostgreSQL/MySQL).
Deep understanding of CRUD operations, data modeling, and query optimization.
Experience deploying and managing services on AWS.
Familiarity with Docker and containerization.
Understanding of concurrency and asynchronous programming (asyncio, background tasks).
Strong debugging, troubleshooting, and performance tuning skills.
Solid experience with Git, CI/CD pipelines, and coding best practices.
Strong communication and collaboration skills.
Preferred / Nice-to-Have
Kubernetes / container orchestration.
Messaging and streaming systems (RabbitMQ, Kafka).
Caching systems (Redis, Memcached).
Authentication/authorization frameworks (JWT, OAuth2).
Experience with event-driven architectures.
Domain experience in e-commerce, fintech, or SaaS platforms.
Logs and monitoring tools (Prometheus, Grafana, ELK stack).
Why Join VectorStack?
Be part of a core engineering team solving real-world, large-scale problems.
Work on cutting-edge cloud and AI/ML-powered solutions.
Collaborative, growth-oriented environment.
Competitive compensation and opportunities for career advancement
Eligibility & process
Who can apply
Seniority: Mid-Senior level. Employment type: Full-time
Skills & stack
Selection process
Details are shared by the recruiter after shortlisting.
Prep kit
20 resourcesStudy material 4
Company-specific guides 4
Likely coding questions 4
Round-wise strategy 4
Technical questions 5
What is the difference between WHERE and HAVING clauses in SQL? Answer
Explain SQL Window functions: ROW_NUMBER(), RANK(), and DENSE_RANK(). Answer
How do you handle NULL and missing values during data cleaning in Python/Pandas? Answer
What is the difference between Star Schema and Snowflake Schema in Data Warehousing? Answer
How do you calculate MoM (Month-over-Month) growth in SQL? Answer
Behavioural & HR questions 3
Highlight VectorStack's market reputation, recent tech innovations, and how your skills in Python directly solve their team's objectives.
Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
Competitive Package
Bengaluru, India
Seniority: Mid-Senior level. Employment t…
