
. Sound knowledge of NoSQL databases like mongo.
. Experience with replication , sharding and scaling.
. Design, install, maintain highly available systems (includes monitoring, security, backup, and performance tuning)
. Implement secure database and server installations (privilege access methodology / role based access)
. Help application team in Cyper query writing, performance tuning & other D2D issues
• Deploy automation techniques for d2d operations
. Must possess good analytical and problem solving skills
. Must be willing to work flexible hours as needed
. Scripting experience a plus
. Ability to work independently and as a member of a team
. Strong verbal and written communication skills

About Extramarks
About
Extramarks Education India Private Limited
Extramarks is leading the Education Technology sector in India by providing 360⁰ education support to learners through new age digital education solutions. These solutions are used by schools in class room for imparting education and by students at home to make learning easy and effective. Keeping pace with globalization and technology in education, Extramarks empowers young learners to step in with the latest technology and have anytime-anywhere access to quality learning. In a very short period, Extramarks has become extremely popular among schools and students. More than 8000 schools use digital learning and technology solutions of Extramarks across India, Singapore, Kuwait, UAE and South Africa.
Extramarks Learning App allows students to learn at home at their own pace and space and provides complete educational support eliminating the need of a tutor. The three pronged pedagogical approach of Learn, Practice and Test ensures better learning outcomes for students. All concepts are first explained in an easy to learn manner with the help of rich media then the students are allowed to practice the concept. Virtual Practicing modules and Q&A allow the retention of knowledge that is tested on a robust teaching platform to identify the learning gaps.
Extramarks is currently in the process of scaling up rapidly the entire technology workforce, by hiring experienced professionals with unique skill who stretches from strategy to execution. Extramarks is driving student learning through data driven techniques by providing personalized learning recommendations to the students. Apart from such customer facing innovations, we are also implementing internal operational excellence solutions through similar data driven approaches. It is a once in a lifetime opportunity to join Extramarks and help change the face of education in India.
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Backend - Software Development Engineer II
Experience - 4+ yrs
About Wekan Enterprise Solutions
Wekan Enterprise Solutions is a leading Technology Consulting company and a strategic investment partner of MongoDB. We help companies drive innovation in the cloud by adopting modern technology solutions that help them achieve their performance and availability requirements. With strong capabilities around Mobile, IOT and Cloud environments, we have an extensive track record helping Fortune 500 companies modernize their most critical legacy and on-premise applications, migrating them to the cloud and leveraging the most cutting-edge technologies.
Job Description
We are looking for passionate software engineers eager to be a part of our growth journey. The right candidate needs to be interested in working in high-paced and challenging environments. Interested in constantly upskilling, learning new technologies and expanding their domain knowledge to new industries. This candidate needs to be a team player and should be looking to help build a culture of excellence. Do you have what it takes?
You will be working on complex data migrations, modernizing legacy applications and building new applications on the cloud for large enterprise and/or growth stage startups. You will have the opportunity to contribute directly into mission critical projects directly interacting with business stakeholders, customer’s technical teams and MongoDB solutions Architects.
Location - Bangalore
Basic qualifications:
- Good problem solving skills
- Deep understanding of software development life cycle
- Excellent verbal and written communication skills
- Strong focus on quality of work delivered
- Relevant experience of 4+ years building high-performance backend applications with, at least 2 or more projects implemented using the required technologies
Required Technical Skills:
- Extensive hands-on experience building high-performance web back-ends using Node.Js. Having 3+ hands-on experience in Node.JS and Javascript/Typescript and minimum
- Hands-on project experience with Nest.Js
- Strong experience with Express.Js framework
- Hands-on experience in data modeling and schema design in MongoDB
- Experience integrating with any 3rd party services such as cloud SDKs, payments, push notifications, authentication etc…
- Exposure into unit testing with frameworks such as Mocha, Chai, Jest or others
- Strong experience writing and maintaining clear documentation
Good to have skills:
- Experience working with common services in any of the major cloud providers - AWS or GCP or Azure
- Experience with microservice architecture
- Experience working with other Relational and NoSQL Databases
- Experience with technologies such as Kafka and Redis
- Technical certifications in AWS / Azure / GCP / MongoDB or other relevant technologies

Key Responsibilities:
Develop and maintain backend applications using FastAPI, Django, Flask.
Design and implement RESTful APIs with API Gateway, rate limiting, and documentation.
Work with databases such as SQLite, SQL, MySQL, Redis for efficient data management.
Integrate and manage third-party APIs, including payment gateways.
Deploy and manage applications using Docker, Git, Nginx, Celery, Linux, and Windows environments.
Ensure security best practices including JWT, OAuth, API security, input validation, and reverse proxy configuration.
Monitor, troubleshoot, and optimize application performance.
Implement AI/ML models and WASM technology for specialized use cases.
Work collaboratively with frontend developers (JavaScript, HTML5, CSS3, Bootstrap).
Required Skills & Qualifications:
Strong proficiency in Python, with expertise in FastAPI, Django, and Flask.
Experience in RESTful API design, API security, and third-party integrations.
Hands-on experience with databases (SQLite, SQL, MySQL, Redis) and data processing.
Proficiency in Docker, Git, Nginx, Celery, and system administration (Linux/Windows).
Strong understanding of JWT, OAuth, API security, and reverse proxy configurations.
Experience with video compression, AI/ML implementation, and WASM technology is a plus.
Knowledge of JavaScript, HTML5, CSS3, Bootstrap for seamless backend integration.
Strong problem-solving skills and ability to debug complex issues.
Bachelor's/Master’s degree in Computer Science, IT, or a related field (or equivalent experience).

Senior Backend Developer /Backend Developer
Hiring for the position of Backend Developer responsible for managing back-end services and the interchange of data between the server and the users.
Your primary focus will be the development of all server side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end.
Role
● Create and consume restful APIs
● Design, develop, and maintain internal and external applications
● Build efficient, testable, and reusable modules
● Write high quality, structured application/interface code and documentation
● Identify solutions through research and collaboration that resolves the root of problems as they arise
● Define functional and technical requirements for application software to develop skills and knowledge
● Troubleshoot, test and maintain the core product software and databases to ensure strong optimization and functionality
● Contribute in all phases of the development lifecycle
Requirement
∙ Proficient in Node.JS
∙ 2+ years’ experience designing, querying, and updating databases in MySQL/nosql
∙ Passion for best design and coding practices and a desire to develop new bold ideas
∙ Good to have knowledge of AWS, Redis, ElasticSearch
Education: Min. Graduate in related discipline
Work experience: 2 years relevant experience


We are looking for experts in multiple .Net technologies such as Angular, MVC, JQuery, JavaScript, C#, Web Services, Web API, .NET Core, HTML, CSS, Bootstrap, JSON across software engineering, security and data management.



- Mandatory skills -PHP Experience.
- Experience in web application development and web developer.
- Good Knowledge of PHP, MySQL, jQuery, Javascript, HTML5, CSS3, XML
- Good debugging skills .
- Expertise in MVC Frameworks and good technology exposure of CI/Larvel frameworks added advantage.

- Designing scalable systems for high load.
- Defining and improving the development processes which includes implementation and Quality Assurance as well
- Architecting complex scalable systems with a keen eye towards performance, security and availability while also taking on a super hands-on role towards implementation
- Spearheading all inbound and outbound API integrations to build the most robust and scalable integration platform in the B2B Retail space.
- Working on interesting technical challenges in a product centric and open-source driven environment.
- Using open source as much as possible, and blogging about cool things that you learnt and built.
What you need to have:
- B.Tech /B.E.; Any Graduation
- Strong relational DB experience preferred
- Must be very much in touch with backend coding and want to do it everyday
- Our stack is primarily built around Node (Loopback), Mongo and ElasticSearch.
- Deep familiarity with Git and basic working knowledge of DevOps (Server and DB config, Docker, Kubernetes etc) is strongly preferred.
- Deep knowledge of NodeJS, PHP, MongoDB and MySQL.
- The role requires a good knowledge of Algorithmic Design and Architecture, Data structures, OOPS Concepts, serverless architectures and complex problem solving skills.
- You will help set a very high bar on code quality.
- We have started the transition towards micro services, one of your core responsibilities is ensure micro services are used wherever it makes sense

• Core knowledge of PHP and Laravel frameworks
• Fundamental understanding of front-end technologies like HTML5, CSS3, and JavaScript. Check if the CSS, HTML, and JavaScript are accurate and consistent across different apps
• Basic knowledge in SQL and NoSQL databases is a plus.
• Build and maintain innovative web applications and websites using modern development tools.
• Document and continuously update the development process, project components, and task progress based on Organization requirements
• Solid experience working with PHP, the latest Laravel version.
• Design and maintain databases.
• Optimize performance by performing UI and back-end tests
• Scale, expand and improve our websites and applications, Perform debugging and troubleshooting on apps.
• Effectively communicate with clients and other teams when needed
• Update on current industry trends and emerging technologies and apply them to the development process


About Us
DataWeave provides Retailers and Brands with “Competitive Intelligence as a Service” that enables them to take
key decisions that impact their revenue. Powered by AI, we provide easily consumable and actionable
competitive intelligence by aggregating and analyzing billions of publicly available data points on the Web to
help businesses develop data-driven strategies and make smarter decisions.
Products@DataWeave
We, the Products team at DataWeave, build data products that provide timely insights that are readily
consumable and actionable, at scale. Our underpinnings are: scale, impact, engagement, and visibility. We help
businesses take data driven decisions everyday. We also give them insights for long term strategy. We are
focussed on creating value for our customers and help them succeed.
How we work
It's hard to tell what we love more, problems or solutions! Every day, we choose to address some of the hardest
data problems that there are. We are in the business of making sense of messy public data on the web. At
serious scale! Read more on Become a DataWeaver
What do we offer?
● Opportunity to work on some of the most compelling data products that we are building for online
retailers and brands.
● Ability to see the impact of your work and the value you are adding to our customers almost immediately.
● Opportunity to work on a variety of challenging problems and technologies to figure out what really
excites you.
● A culture of openness. Fun work environment. A flat hierarchy. Organization wide visibility. Flexible
working hours.
● Learning opportunities with courses, trainings, and tech conferences. Mentorship from seniors in the
team.
● Last but not the least, competitive salary packages and fast paced growth opportunities.
Role and Responsibilities
● Build a low latency serving layer that powers DataWeave's Dashboards, Reports, and Analytics
functionality
● Build robust RESTful APIs that serve data and insights to DataWeave and other products
● Design user interaction workflows on our products and integrating them with data APIs
● Help stabilize and scale our existing systems. Help design the next generation systems.
● Scale our back end data and analytics pipeline to handle increasingly large amounts of data.
● Work closely with the Head of Products and UX designers to understand the product vision and design
philosophy
● Lead/be a part of all major tech decisions. Bring in best practices. Mentor younger team members and
interns.
● Constantly think scale, think automation. Measure everything. Optimize proactively.
● Be a tech thought leader. Add passion and vibrance to the team. Push the envelope.
Skills and Requirements
● 4-7 years of experience building and scaling APIs and web applications.
● Experience building and managing large scale data/analytics systems.
● Have a strong grasp of CS fundamentals and excellent problem solving abilities. Have a good
understanding of software design principles and architectural best practices.
● Be passionate about writing code and have experience coding in multiple languages, including at least
one scripting language, preferably Python.
● Be able to argue convincingly why feature X of language Y rocks/sucks, or why a certain design decision
is right/wrong, and so on.
● Be a self-starter—someone who thrives in fast paced environments with minimal ‘management’.
● Have experience working with multiple storage and indexing technologies such as MySQL, Redis,
MongoDB, Cassandra, Elastic.
● Good knowledge (including internals) of messaging systems such as Kafka and RabbitMQ.
● Use the command line like a pro. Be proficient in Git and other essential software development tools.
● Working knowledge of large-scale computational models such as MapReduce and Spark is a bonus.
● Exposure to one or more centralized logging, monitoring, and instrumentation tools, such as Kibana,
Graylog, StatsD, Datadog etc.
● Working knowledge of building websites and apps. Good understanding of integration complexities and
dependencies.
● Working knowledge linux server administration as well as the AWS ecosystem is desirable.
● It's a huge bonus if you have some personal projects (including open source contributions) that you work
on during your spare time. Show off some of your projects you have hosted on GitHub.

