Senior Backend Developer

About Potentiam

Potentiam helps SME companies build world-class offshore teams. Our model is our locations and your dedicated staff under your control. Potentiam have offices in Iasi in Romania, Bangalore and Cape Town, home to large liquid pools of offshore talent working for international companies. Potentiam's management team have had over 15 years' experience in building offshore teams, and have specialist functional expertise to support the transition offshore in technology, finance, operations, engineering, digital marketing, technology and analytics. For decades corporations' scale has enabled them to benefit from the cost and skills advantage of offshore operations. Now SME companies can enjoy a similar benefit through Potentiam without any upfront investment.

Location : Bangalore ( Hybrid)

Experience - 6+ Years

Professional Experience:

• Experience using a Python backend web framework (like Django, Flask or FastAPI)
• In particular, experience building performant and reliable APIs and integrations
• Competency using SQL and ORMs
• Some experience with frontend web development would be a bonus using a JavaScript framework (such as Vue.js or React)
• Understanding of some of the following: Django Rest Framework, PostgreSQL, Celery, Docker, nginx, AWS

Benefits and Perks

• Health Insurance
• Referral Bonus
• Performance Bonus
• Flexible Working options

Job Types: Full-time, Permanent

Job description

Key Responsibilities

• Design, develop, and maintain serverless applications using AWS services such as Lambda, API Gateway, DynamoDB, and S3.
• Collaborate with front-end developers to integrate user-facing elements with server-side logic.
• Build and maintain RESTful APIs to support web and mobile applications.
• Implement security best practices for AWS services and manage IAM roles and policies.
• Optimize application performance, scalability, and reliability through monitoring and testing.
• Write clean, maintainable, and efficient code following best practices and design patterns.
• Participate in code reviews, providing constructive feedback to peers.
• Troubleshoot and debug applications, identifying performance bottlenecks and areas for improvement.
• Stay updated with emerging technologies and industry trends related to serverless architectures and Python development.

Qualifications

• Bachelors degree in Computer Science, Engineering, or related field, or equivalent experience.
• Proven experience as a Python backend developer, with a strong portfolio of serverless applications.
• Proficiency in AWS services, particularly in serverless architectures (Lambda, API Gateway, DynamoDB, etc.).
• Solid understanding of RESTful API design principles and best practices.
• Familiarity with CI/CD practices and tools (e.g., AWS CodePipeline, Jenkins).
• Experience with containerization technologies (Docker, Kubernetes) is a plus.
• Strong problem-solving skills and the ability to work independently and collaboratively.
• Excellent communication skills, both verbal and written.

Preferred Skills

• Experience with frontend technologies (JavaScript, React, Angular) is a plus.
• Knowledge of data storage solutions (SQL and NoSQL databases).
• AWS certifications (e.g., AWS Certified Developer Associate) are a plus.

Job Summary
- Expand the product to suit the needs of all kinds of travellers. From family travellers to hardcore backpackers and from free independent travellers to those who need a more guided approach to planning their trip. 
- Launch across more countries. This means adding support for more geographies, things to do, weather, currencies and payments, transport and accommodation. 
- Scale it up to serve millions of users a year, from across the globe. We are seeing decent growth, but it is time to up the game.

Responsibilities and Duties
How you'll add value: 
- Own the architecture and design decisions that go into shaping our backend microservices 
- Build and ship robust features. 
- Work with web and mobile engineers to design and build APIs to power the traveler and influencer applications. 
- Help us scale out to multiple geographies and serve millions of travelers
Required Experience, Skills and Qualifications
- An innate desire to grow. Both personally and with respect to the value you add to other people's lives. 
- 4+ years industry experience working with golang/Django
- Sound understanding of CS fundamentals. We don't expect you to remember every algorithm by heart. But if you know how to find the most appropriate one for any given problem, let's talk. 
- Personal projects that show an aptitude for technical excellence and product sense. 
- Interest in contributing to open source projects 
- Bonus points if you have an interest in the philosophy behind technologies. - You are intrigued by why did people develop certain technologies the way they did.
Benefits
- Work with a bunch of amazing people on a challenging problem. 
- 1 backpacking trip each year to travel outside India. We don't allow you to travel, we WANT you to travel. 
- Stock. 
- We don't mind work from home/cafe/some random city in the world as long as your work and your team is not disrupted. 
- We don't have a leave policy (there is a guideline for legal reasons) but you are free to take as much personal time as you need as long as you get your job done.

Job Type: Full-time

Salary: ₹2,000,000.00 to ₹3,000,000.00 /year

DUKAAN - Create Your Online Store in 30 Seconds

Dukaan is an app that allows offline businesses to sell their products and services online. On our app, the users can make beautiful product catalogues (catalogs) right from a smartphone and share with their customers easily on different social media apps such as Whatsapp Business, Whatsapp, Facebook, Instagram etc. Praised by users all over India, this app has saved declining businesses by helping them transfer their shop online. The journey has just begun and we are on a mission to make India truly Digital.

Dukaan is currently powering over 5M ecommerce stores built by indian small businesses and growing at a crazy rate.  

We are looking for a Backend Engineer to join our team who will be part of our new innovations team.

Requirements:

1. Strong knowledge of Django, Django Rest Framework and their design principles.
2. Strong knowledge of Django ORM, should be able to leverage it to write complex and optimized queries (E.x Q queries, Case, When, Select related, prefetch related, Subqueries, Annotations, Aggregations, Filtering, etc.) .
3. Should be able to override DRF serializers, filters and viewsets completely according to needs.
4. Should have good experience in Class Based Views to write the backend API’s.
5. Sound knowledge of database design patterns and modelling them to Django models.
6. Sound knowledge of how to write test cases for the APIs.
7. Should be able to write optimized pythonic code adhering to python PEP standards.
8. Strong knowledge of python packaging and how to architect a code base that should be easily scalable and not get cluttered.
9. Strong knowledge of REST API design patterns.
10. Ability to write RAW sql queries and further database level coding will be a plus.
11. Good Understanding of python’s asyncio, threading and multiprocessing library, their benefits and limitations along with their appropriate use cases.
12. Hands on knowledge of celery and its corresponding message broker such as RabbitMQ, Redis, etc.
13. Experience with building a CDC(Change Data Capture) pipeline will be a plus.
14. Experience with Apache Kafka, Kafka connect and Debezium will be a plus.
15. Experience with open source will be a plus.
16. Good knowledge of Algorithms and data structures.

Responsibilities:

1. Understand the ins and out of existing codebase and have a good grasp over it.
2. Write clean, stable and scalable code.
3. Write unit test cases for the APIs.
4. Do whitebox and blackbox testing for your own code and as well as others if required.
5. Understand and implement fast prototype solutions for the business needs.

About Us:
Three Wheels United works in the exciting fintech domain by developing novel solutions to improve financial inclusion and reduce pollution. Our solutions are backed by cutting edge technology which helps streamline complex financial instruments and improve operational efficiency between various partners. Three Wheels United has won several awards for its efforts in driving sustainable use of resources and promoting clean technology and not surprisingly is backed by multiple international and national venture funds.

Being a start-up, Three Wheels United offers a challenging fast-paced environment to learn and grow by providing you opportunities to step out of comfort zone and tinker with your creative and innovative side and host various responsibilities.

In collaboration with Microsoft Research, we are developing a data-driven lending platform catered towards the needs of “emerging markets” users. The complete platform has various components, all working in tandem to provide a “comfortable” loan journey for our borrowers by working on increasing their ability to earn more as well as improving their willingness to repay. As someone joining the technology team, you’ll have the chance to experience and lead efforts into scaling the existing systems to thousands of users across India and outside. You’ll also get a chance to learn the various nuances of working in the domain of finance and sustainable technology development.

We are looking for outstanding engineers to assist building up the core components as well as designing new components. Knowledge of existing technologies is preferred, but ultimately, we are looking for individuals with a growth mindset, willing to learn and contribute to their growth and the growth of their peers.

Our lending model has been identified as one of the most innovative in global south by the Climate Finance Lab and we have raised seed funds from global Angel investors to scale our operations. We work closely with Microsoft Research India and Mahindra Electric as our technology partners. The technology team is being incubated at Microsoft Research’s Center of AI and Societal Impact and will work closely with Researchers to iron out the platform. https://hashedin.com/blog/acm-sigchis-1st-bangalore-chapter-user-research-in-action/">HashedIn and Diode cover in brief our partnership with Microsoft Research’s TEM group and the work around financial inclusion and sustainable technology development.

• Develop, modify, and maintain code base of various applications.
• Coordinating with a remote team and applying appropriate branching, labelling using GIT.
• Adding features to the existing web dashboard for monitoring and supporting field operations.
• Implementing application testability and diagnostics and fixing bug with REDUX architecture.

• 2+ years’ experience with development of Restful APIs.
• Knowledge of MVC architecture.
• Strong Knowledge of Database management and OOP.
• Any prior experience of using CD/CI pipelines and experience with azure web services.

• Contributions to Opensource projects.
• Contributions to developer community through Stack Overflow, TopCoder, CodeChef, Google Developer Groups etc.
• Relevant personal or public technical blogs

• Solid experience in RoR, Golang, NodeJS or Python. Good to have exposure to ML.
• Should have experience in cloud computing
• Has an ability to quickly learn and contribute in multiple codebase
• Overcomes roadblocks and requires minimal oversight
• Takes initiatives to fix issues/tech debts before assigned to him/her
• Able to deep dive into codebase and advise QA of possible regression impact
• Communicates tech decisions through design docs and tech talks
• Has delivered projects with end-to-end accountability
• Keeps track of industry trends and introduces right tech/tools for a given job
• Excellent understanding of software engineering practices, Design Patterns, Data Structures, Algorithms

We are looking for 2-3 years experienced Django Developer to join immediately in Delhi.

Responsibilities

As a Backend Developer,  you will be responsible for -

•  Building the Complete Backend of our web application and Mobile App from scratch.
• Work closely with the Frontend Engineer to integrate the algorithmic input from the Frontend Framework.
• Work closely with the product owners to create dynamic infographics with intuitive user controls.
• Participate in UAT, troubleshoot, bugs and application integration issues
• Optimize applications for best user experience
• Create and maintain documentation related to the developed processes and applications

Qualification & Experience

• 2-3 years of demonstrable experience designing, building, and working as a Django Developer for enterprise web application
• Ideally, this would include the following:
• Expert-level proficiency with Python, Django, and Django Rest Framework.
• Understanding of REST concepts and interacting with REST APIs
• Understanding of  Postgresql 
• Basic Understanding of Frontend Framework like React.js
• Deep understanding of a few Backend concepts:
• Familiarity with Elastic Search and AWS Technology
• Familiarity with Apache and Ngnix etc.
• Understanding of Python coding Standards
• In addition, the ideal candidate would have great problem-solving skills and familiarity with code versioning tools such as Github

Location:- Delhi

This person MUST have:

• B.E Computer Science or equivalent
• 5 years experience with the Django framework
• Experience with building APIs (REST or GraphQL) 
• Strong Troubleshooting and debugging skills
• React.js knowledge would be an added bonus 
• Understanding on how to use a database like Postgres (prefered choice), SQLite, MongoDB, MySQL.
• Sound knowledge of object-oriented design and analysis.
• A strong passion for writing simple, clean and efficient code.
• Proficient understanding of code versioning tools Git.
• Strong communication skills.

Experience:

• Min 5 year experience
• Startup experience is a must. 

Location:

• Remote developer

Timings:

• 40 hours a week but with 4 hours a day overlapping with client timezone.  Typically clients are in California PST Timezone.

Position:

• Full time/Direct
• We have great benefits such as PF, medical insurance, 12 annual company holidays, 12 PTO leaves per year, annual increments, Diwali bonus, spot bonuses and other incentives etc.
• We dont believe in locking in people with large notice periods.  You will stay here because you love the company.  We have only a 15 days notice period.

The key aspects of this role include:

• Design, build, and maintain scalable applications using Python.
• Contribute to the entire implementation process including driving the definition of improvements
based on business need and architectural improvements.
• Act as a subject matter expert for Application Software developers and Engineers.
• Handle server-side code for a production platform and contribute to new features.

To be the right fit, you'll need:
• More than 4+ years of experience as a software developer in Python, with knowledge of at least one
Python web framework such as Django, Flask, etc.
• Good understanding of common design patterns and architecture principles to design reliable and
Scalable applications
• Strong communication skills
• Knowledge of databases line NoSQL or MongoDB
• Good to have AWS and Docker or Web services
• Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3