Backend Engineer

Requirements

• Extensive and expert programming experience in at least one general programming language (e. g.

Java, C, C++) & tech stack to write maintainable, scalable, unit-tested code.

• Experience with multi-threading and concurrency programming.

• Extensive experience in object oriented design skills, knowledge of design patterns, and a huge passion

and ability to design intuitive modules and class-level interfaces.

• Excellent coding skills - should be able to convert design into code fluently.

• Knowledge of Test Driven Development.

• Good understanding of databases (e. g. MySQL) and NoSQL (e. g. HBase, Elasticsearch, Aerospike etc).

• Strong desire to solve complex and interesting real world problems.

• Experience with full life cycle development in any programming language on a Linux platform.

• Go-getter attitude that reflects in energy and intent behind assigned tasks.

• Worked in a startup-like environment with high levels of ownership and commitment.

• BTech, MTech or Ph. D. in Computer Science or related technical discipline (or equivalent).

• Experience in building highly scalable business applications, which involve implementing large complex

business flows and dealing with huge amounts of data.

• 3+ years of experience in the art of writing code and solving problems on a large scale.

• Open communicator who shares thoughts and opinions frequently, listens intently, and takes

constructive feedback.

• Proficiency in Java, with a good understanding of its ecosystems
• Sound knowledge of Object-Oriented Programming (OOP) Patterns and Concepts
• Familiarity with different design and architectural patterns
• Skill for writing reusable Java libraries 
• Knowhow of Java concurrency patterns
• Basic Understanding of the concepts of MVC (Model-View-Controller) Pattern, JDBC (Java Database Connectivity), and RESTful web services
• Experience in working with popular web application frameworks like Play and Spark

• Design & build a highly scalable, robust backend architecture for our cloud services
• You will be part of a software development team for developing and enhancing SaaS applications.
• Take responsibility of entire module/feature set and develop, test, debug and maintain the application software throughout the product lifecycle
• Working with the Product Management Team to validate and plan new features
• Working with cross-functional teams to deliver stellar end user experience
• Research new technologies and tools that help in building the next generation of our services
• Test, debug and maintain the application software throughout the product lifecycle

• Must have experience with web development in Java 8+, Spring/J2EE or similar frameworks and technologies. (Mandatory)
• Must have worked on REST API (Mandatory)
• Should be an enthusiast for writing clean, reusable code, willing to learn new things as a self-starter person
• 2+ years of strong relevant experience in developing Object-oriented technologies.
• Strong working experience with any of the following DBs - Postgres / MySQL / Oracle or MSSQL
  

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.

A highly motivated, skilled, and 3-8 years experienced JAVA Software Engineer to implement innovative solutions with a proven track record developing end-to-end scientific or business applications in JAVA with emphasis on browser-based applications.

You have oodles of experience designing and developing and documenting Enterprise applications using J2EE technologies. You have worked extensively on the new breed of Enterprise applications utilizing cutting edge technologies such as Java, JavaScript, JPA, Hibernate, spring Batch and web services.

 You bring to the table…

• Object oriented skills, including an understanding of common object and web application design patterns.
• Strong in Core Java Concepts, JavaScript, JPA, Hibernate, spring, Batch, web services.
• Hands on experience with SQL
• Should possess hands of experience on Linux.

• Strong Java software development experience – with a focus on Java 8 & 9
• Experience with NoSql databases – ideally with MongoDB
• Experience implementing REST apis – ideally with JAX-RS
• Experience with Reactive Programming – ideally with RxJava
• Experience implementing unit tests

• Experience developing applications in fintech or established financial institutions
• Experience with microservice architectures
• Experience developing systems that can scale to large amounts of data
• Experience working in Agile Scrum
• Experience working on a globally distributed team