
About the Role
We are looking for a skilled Backend Engineer with strong experience in building scalable microservices, integrating with distributed data systems, and deploying web APIs that serve UI applications in the cloud. You’ll work on high-performance systems involving Kafka, DynamoDB, Redis, and other modern backend technologies.
Responsibilities
- Design, develop, and deploy backend microservices and APIs that power UI applications.
- Implement event-driven architectures using Apache Kafka or similar messaging platforms.
- Build scalable and highly available systems using NoSQL databases (e.g., DynamoDB, MongoDB).
- Optimize backend systems using caching layers like Redis to enhance performance.
- Ensure seamless deployment and operation of services in cloud environments (AWS, GCP, or Azure).
- Write clean, maintainable, and well-tested code; contribute to code reviews and architecture discussions.
- Collaborate closely with frontend, DevOps, and product teams to deliver integrated solutions.
- Monitor and troubleshoot production issues and participate in on-call rotations as needed.
Required Qualifications
- 3–7 years of professional experience in backend development.
- Strong programming skills in one or more languages: Java, Python, Go, Node.js.
- Hands-on experience with microservices architecture and API design (REST/gRPC).
- Practical experience with Kafka, RabbitMQ, or other event streaming/message queue systems.
- Solid knowledge of NoSQL databases, especially DynamoDB or equivalents.
- Experience using Redis or Memcached for caching or pub/sub mechanisms.
- Proficiency with cloud platforms (preferably AWS – e.g., Lambda, ECS, EKS, API Gateway).
- Familiarity with Docker, Kubernetes, and CI/CD pipelines.

About Zenius IT Services Pvt Ltd
About
At Zenius IT Services, we specialize in delivering top-tier Professional Services for industry-leading platforms such as Avaya, Cisco, Genesys, Amazon Connect, Five9, and NICE inContact.
Our expertise extends to Digital Engineering Solutions powered by AI and Machine Learning, helping businesses drive innovation and achieve excellence.
Candid answers by the company
we specialize in delivering top-tier Professional Services for industry-leading platforms such as Avaya, Cisco, Genesys, Amazon Connect, Five9, and NICE inContact.
Our expertise extends to Digital Engineering Solutions powered by AI and Machine Learning, helping businesses drive innovation and achieve excellence.
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Job Details:
As a Software engineer you will be able to challenge the idea of “impossible”, producing results that are elegant, simple and don’t require a team of experts to decode. You are driven by innovation, fresh ideas and new ways to produce high quality solutions.
Job Description:
Position Summary:
We are looking for a Cloud developer responsible for the development and maintenance of cloud applications deployed in AWS environment. Your primary focus will be the development of such applications and their integration with other services. A commitment to open mind, problem solving, ability to learn, and creating quality products is essential.
Responsibilities:
- Ensure the performance, quality, and responsiveness of services
- Collaborate with a team to define, design, and ship new features
- Innovative thinking of finding solutions to needs
- Identify and correct bottlenecks and fix bugs
- Help maintain code quality, automatization and documentation
- Use Agile Scrum Methodology for software development
- Develop unit tests for all new code
- Provide code reviews for all new code and participate to code reviews of other people
- Diagnose and resolve complex level issues of application
- Participate in interactions with all levels of personnel with different teams
- Design and build services on top of AWS
Skills:
- Strong knowledge of Python
- Strong knowledge of Web Services (Rest or SOAP APIs)
- Strong knowledge of React JS or any other JavaScript
- Solid understanding of object-oriented programming
- Knowledge of Java and Spring Boot is good to have
- Knowledge of AWS is good to have
- Knowledge of TypeScript is good to have
- Knowledge of Linux is good to have
- Knowledge of HTML and CSS is good to have
- Knowledge of AWS CloudFormation is good to have
- Knowledge of Elasticsearch is good to have
- Familiarity with continuous integration
- Any authorized Java, AWS, Linux, or Python certifications will be value added
- Min 2 years of work experience in relevant technologies
- Excellent interpersonal and written communication skills
Rejolut is one of the award-winning fastest-growing emerging tech company which is working on leading technology like Blockchain, ML & AI, Complex mobile & web apps, IoT, etc.
The ideal candidate will be responsible for developing a highly scalable and secure code.
Responsibilities:-
- Able to take the Extreme Ownership of modules/product/projects
- Able to learn & implement new technology/framework/library at God Speed
- Able to come with an optimal solution for the business problem
- Can handle calls with the client & customer to know their feedback
- Writing clean code & able to dig into other's code or open-source code.
Desired Candidate Profile:-
- Good problem-solving skills are a must
- Expertise in Node.js development, Javascript (hands-on Experience )
- Exposure to developing APIs with Node JS
- Knowledge of Node.js and frameworks available for it such as Express, sails.js, StrongLoop, etc
- Knowledge of SQL and NoSQL database
- Knowledge of tools like Docker, Git, Postman, JSdocs, etc.
- Basic understanding of front-end technologies, such as HTML5, and CSS3
- Added advantage (Python or Ruby or Golang)
- Self-motivated and able to drive the team
- Good communication and interpersonal skills
- Experience in working in fintech is a plus
How we are different
-We are a young and dynamic team who are obsessed with solving the business problem at scale.
-We are a technology agnostic company that focuses more on finding the optimal solution to the business problem rather than technology.
Why join us
- We provide a huge learning curve. Spending 1.5-2 years with us will put you 3 years ahead in the career.
- We work only on cutting edge technology like React, React Native, Flutter, NodeJS, Python, Go, Svelte, ELM
- There are two technology Co-founder in the company who are pretty much hands-on and have earlier bult the Consumer application which is downloaded millions of times and are in leadership position in copanies like Samsung, Purplle, Loylty Rewardz.
- Get mentored by the best in the industry
- Flexible working hours
- Perks best in the industry

Job Description:-
Design, develop IoT/Cloud-based Typescript/ JavaScript/ Node.JS applications using
Amazon Cloud Computing Services.
Work closely with onsite, offshore, and cross functional teams, Product Management, UI/UX developers, Web and Mobile developers, SQA teams to effectively use technologies to build and deliver high quality and on-time delivery of IoT applications
Bug and issue resolution
Proactively Identify risks and failure modes early in the development lifecycle and develop.
POCs to mitigate the risks early in the program.
Assertive communication and team skills
Primary Skills:
Hands on experience (3+ years) in AWS cloud native environment with work experience in
AWS Lambda, Kinesis, DynamoDB
3+ years’ experience in working with NodeJS, Python, Unit Testing and Git
3+ years in work experience with document, relational or timeseries databases
2+ years in work experience with typescript.
1+ years in IaaS framework like Serverless or CDK with CloudFormation knowledge

We are seeking a skilled Node.js + Python Developer to join our team. The successful candidate will be responsible for developing and maintaining web applications using Node.js and Python. The ideal candidate will have a strong understanding of both Node.js and Python, as well as web application development. Responsibilities:
Developing and maintaining web applications using Node.js and Python
Write clean and efficient code that adheres to Node.js and Python coding standards
Collaborate with other developers and team members to design and implement new features
Troubleshoot and debug issues in existing code
Create and maintain technical documentation
Requirements:
Strong knowledge of Node.js and Python
Familiarity with front-end technologies such as HTML, CSS, and JavaScript
Experience with MySQL/Mongo and database design
Good understanding of object-oriented programming and design patterns
Strong problem-solving skills and attention to detail
Good communication skills and ability to work in a team environment
Preferred Qualifications:
Experience with popular Node.js frameworks such as Express or Koa
Experience with OpenAi APIs
Knowledge of machine learning and data science libraries in Python such as TensorFlow, Scikit-learn, and Pandas
Experience with RESTful API development
Experience with payment gateway integrations



Responsibilities:
- Design and create services and system architecture for your projects, while working.
- Closely with the product, design and engineering team.
- Participate in brainstorming sessions and contribute ideas to our technology, algorithms and products.
- Dive into difficult problems and successfully deliver results on schedule.
- Own services related to OkCredit features in active development.
- Develop and deploy required services responsible for evolution of the overall product.
- Do server side development in golang/python preferably (or any other language).
- Deploying stuff in production in docker containers.
- Write tests.
- Invent awesome stuff to make your job easier
- Motivation to design and build reliable, elegant backend services.
- At least 2 - 5 years of backend development experience.
- Proficiency in GoLang is MANDATORY.
- Familiarity with infrastructure concepts related to docker, kubernetes is preferred.
- Familiarity with Protocol buffers. Protocol buffers are now OkCredit's lingua franca for data.
- Familiarity with message-oriented middleware like rabbitmq, google pubsub.
- Familiarity with cloud platforms like gcp, aws etc.
Role: Java developer
Experience: 4+ years
Job description
○ Working experience on JAVA,Spring Boot. (on building web services?)
○ NOSQL DynamoDB knowledge is plus
○ Working experience in building micro services and distributed systems
○ Working experience on using messaging queues RabbitMQ/Kafka is plus

The B2B manufacturing industry has a lack of digitisation globally. NowPurchase is building layers of technology to help improve the productivity and profits of the manufacturer. For this we are building the OS (Operating System) that will seamlessly connect factory equipment such as furnaces and spectrometers to our software systems that provide real time optimisations.
The end-game is to use this interconnected system to do great production planning and autonomous procurement of their raw materials. The Heart of NowPurchase will be a marketplace consisting of these smart factories and raw material suppliers.
Here a video that explains our product journey:
https://www.loom.com/share/ccd0ed9e7bc349d7bba851d762253c21">https://www.loom.com/share/ccd0ed9e7bc349d7bba851d762253c21
This is fully a remote role, but the employer needs to fly down to the office in Kolkata for 5–6 days every month. Plane tickets and accommodation will be reimbursed by the company.
Role Description
NowPurchase is looking to add an immensely talented Senior Backend Engineer that will help us invent, design, refine and deliver products that will meet the above vision.
- Expect to build a lot of services and APIs in the cloud and stand-alone IoT devices to serve both the browser as well as native IoT enabled terminals that will be placed at the manufacturers' premises.
- Expect designing algorithms that model the metallurgy of the manufacturing processes as well as using tools such as linear programming, machine learning etc.
- You need to lead the backend team to make sure they are delivering high quality code and is constantly inspired to experiment with tools to push out MVPs.
What are the expectations from this role?
- Deliver high quality modular code deployed to serve web, mobile and native IoT enabled terminals that leverage REST-based services and real time sockets. This would include algorithms for real time optimizations that are critical for the manufacturing process.
- You are empowered to work directly with leadership and the product team to make decisions about your code and future of the product.
- Have a strong emphasis on shipping features quickly without sacrificing code quality. Be ready to build a lot of MVPs that will go through iteration or be completely scrapped depending on the outcome at the customer end.
- Own your Agile projects and lead the team from software design to implementation and deployment. Maintain sprints, delivery timelines and contribute to better managing the engineering team.
- Collaborate on the end to end design and implementation of the platform, including data modeling, systems architecture, data security, access controls, architecture, user experience, deployment, automation, and monitoring.
- Maintain a high level of data integrity, quality and security checks.
- Develop data pipelines and RESTful services that are distributed, robust and highly performant.
- Build a culture of simplicity and pragmatism, which is reflected in your elegant code that other developers emulate and you ensure through thorough code reviews and processes.
Qualifications and Experience
- 4+ years of demonstrated software engineering experience in an agile environment designing, architecting and implementing robust scalable systems preferably for modern SaaS application
- 1+ years of technical leadership experience
- Experience with modern server-side programming languages such as Python, Scala, Go. Experience with web frameworks such as Django Rest Framework, Flask.
- Experience with architecting asynchronous services with design patters leveraging PostgreSQL, MongoDB, Redis, Celery for storage and multi-tenant servers over AWS Elastic BeanStalk.
Compensation & Benefits
- **Cash Compensation:** As per industry standards & pedigree of candidate
- **ESOPs:** 10% of NowPurchase is dedicated to current & future team members. Your package would entail some ESOPs so that you own a part of the company and grow along with it.
- **Medical Insurance:** Benefits of group insurance of 3 lakhs for family including parents, spouse, children
- **Generous leave structure and WFHs** including Marriage, Maternity & Paternity leaves
- **Complete Relocation Expenses:** We are building a unicorn out of the city of Joy (Kolkata). We will pay for everything you spend to relocate here.
**Possible Growth path**
Senior Backend End Engineer > Engineering Manager > VP of Engineering
**Tech Stack**
- React/Redux
- Python/Django/Celery
- Git, AWS, ELB (Elastic Beanstalk), Netlify
- PostgreSQL/Redis/S3
## **Hiring Process**
1. Screening of applicants & initial telephonic call with Manager -HR
2. F2F/Video Interview with Engineering Manager and Cofounder CTO
3. Take home written assessment
4. F2F/Video Interview with Cofounder CEO
5. Email communication on final feedback
The end to end process shall take less than 10 days. We pride ourselves on being transparent & moving fast.
*Candidates who accept an offer may join within 1 hour, 1 week or up to 45days of signing - though, we have a preference for as short a gap period between signing and joining since we're at the most exciting part of our journey - laying the foundation for the NowPurchase platform!*

Responsibilities:
- Ability to work in an existing codebase and collaborate with a diverse team
- Experience in building enterprise-scale backend REST APIs with frameworks such as Nest.js & Express.js using an API-first paradigm
- Intimate knowledge of crafting highly performant database queries
- Hands-on experience implementing relational database structures, including tables, indexes, views, etc.
- A mindset towards building systems for the cloud and DevOps fundamentals
- Working knowledge of cloud infrastructure services is good to have. If not then willingness to learn should be there.
- Focus towards building security, performance, and scalability into services from the beginning
- Experience with debugging code and troubleshooting technical issues in order to craft appropriate solutions


