JD:
Required Skills:
- Intermediate to Expert level hands-on programming using one of programming language- Java or Python or Pyspark or Scala.
- Strong practical knowledge of SQL.
Hands on experience on Spark/SparkSQL - Data Structure and Algorithms
- Hands-on experience as an individual contributor in Design, Development, Testing and Deployment of Big Data technologies based applications
- Experience in Big Data application tools, such as Hadoop, MapReduce, Spark, etc
- Experience on NoSQL Databases like HBase, etc
- Experience with Linux OS environment (Shell script, AWK, SED)
- Intermediate RDBMS skill, able to write SQL query with complex relation on top of big RDMS (100+ table)

About Cemtics
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Build smart energy solutions combining IoT sensors, edge computing, and real-time analytics.
What you'll do:
- Develop solar panel monitoring systems (Raspberry Pi/ESP32)
- Implement MQTT brokers and time-series databases (InfluxDB)
- Create energy optimization algorithms (ML-based forecasting)
- Build dashboards (Grafana, custom React apps)
- Deploy edge AI models for predictive maintenance
- Integrate with smart grid protocols
What we need:
- Python, basic electronics
- Arduino/ESP32 projects
- Interest in renewable energy/IoT
- Cloud basics (MQTT, AWS IoT Core)
Impact:
- Systems deployed at 50+ solar installations
- Green tech portfolio for sustainability roles
- Patent publication opportunity
Key Responsibilities would include:
1. Design, develop, and maintain enterprise-level Java applications.
2. Collaborate with cross-functional teams to gather and analyze requirements, and implement solutions.
3. Develop & customize the application using HTML5, CSS, and jQuery to create dynamic and responsive user interfaces.
4. Integrate with relational databases (RDBMS) to manage and retrieve data efficiently.
5. Write clean, maintainable, and efficient code following best practices and coding standards.
6. Participate in code reviews, debugging, and testing to ensure high-quality deliverables.
7. Troubleshoot and resolve issues in existing applications and systems.
Qualification requirement -
1. 4 years of hands-on experience in Java / J2ee development, preferably with enterprise-level projects.
2. Spring Framework including - SOA, AoP and Spring security
3. Proficiency in web technologies including HTML5, CSS, jQuery, and JavaScript.
4. Experience with RESTful APIs and web services.
5. Knowledge of build tools like Maven or Gradle
6. Strong knowledge of relational databases (e.g., MySQL, PostgreSQL, Oracle) and experience with SQL.
7. Experience with version control systems like Git.
8. Understanding of software development lifecycle (SDLC)
9. Strong problem-solving skills and attention to details.
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!*
Role Summary: Back-end Developer who would contribute towards building a highly flexible and scalable Back- end by bringing deep core technology expertise.
Job Description:
- Develop modules keeping micro services architecture philosophies in check. - Implement and/or oversee implementation of different modules as part of an integrated development team. - Drive evolution of application performance. - Ensure project scalability by having good project architecture
Skill Requirements:
- Strong Node.js. - Strong database technology skillsets, namely MongoDB, MySQL
- Should have experience of using Rabbit MQ.
- Python (Django) skills are a plus. - A skilled and pragmatic approach.
- Experience with user-centred design, test-driven development, iterative/incremental and agile practices. - Experience with AWS deployment a definite plus.
Individual applying to the role should ideally have the following attributes.
-Passionate about back-end Development and continually follow the platform & innovations
-Strong and innovative approach to problem solving and finding solutions
- Excellent communicator (written and verbal, formal and informal)
- Flexible and proactive/self-motivated working style with strong personal ownership of problem resolution
- Ability to multi-task under pressure and work independently with minimal supervision.
- Ability to prioritize when under pressure.
• Developing eCommerce sites on Shopify platform
• Migrating websites from other eCommerce platforms to Shopify
• Extending Shopify’s functionalities to next level using storefront APIs, liquid programming, meta fields, etc
• Integrating third-party and platform supported apps in the sites
• Setting up payment integration, shipping methods and taxes in Shopify platform
• Page speed optimization of Shopify sites
• Implementing SEO/CRO best practices in Shopify sites
• Transforming complex layout PSDs into pixel-perfect presentation-layer HTML5/CSS3 templates
• Creating responsive website designs
• Working under tight deadlines
• Handling multiple projects at the same time
• Producing high quality of work with a strong focus on detail
• Thoroughly QA work prior to submission
- Understanding of cross-platform design principles.
- 2+ years of mobile software development experience. 1+ years of iOS and Android development experience with React Native.
- Good Experience in JavaScript, Typescript and React Native, strong familiarity with native mobile application development either Android or iOS.
- Solid understanding of mobile development concepts; APIs consumption, power optimization, user interaction design, application security.
- Coding for the mobile environment, experience integrating third-party SDKs into apps.
- Application lifecycle management with both Apple App Store and Google Play store.
- Superior critical thinking, analytical, evaluation, and problem-solving skills.
- Self-directed and proactive, work collaboratively with team members and independently; thinks beyond the immediate problem.
- Experience using mobile testing frameworks and methodologies
- Familiarity with Material UI (or similar)
- Familiarity with UX testing and user research
What you'll do
Your job responsibilities include
- Planning and coordinating with internal and external stakeholders to ensure project execution as per technical and functional specifications.
- Reviewing technical requirements and adapting those into a Force.com application.
- Communicating with end-users to fully understand client expectations.
- Participating in and leading code-review sessions to identify potential project bottlenecks and suggest solutions.
- Requirement analysis, database design, coding, testing, implementation and maintenance of Salesforce and associated software applications.
- Managing technical delivery of integrations and custom extensions.
- Providing hands-on support in software/application architecture, development, design, independent analysis and problem resolution.
- Overseeing development, design, UI and technology integration efforts for effective completion of a project.
- Salesforce.com setup, configuration, customization, data Migration and deployment of applications to Force.com platform
- Providing guidance to clients over technology, processes and applications while updating them on regular project related developments.
Who you are
- 3+ years of experience in Force.com applications design, development, integration, AppExchange launch and support and minimum 6 months to 1 year of hands on experience in Salesforce Lightning development.
- Fluent in Salesforce Lightning. Extensive experience developing Lightning Components – both within the Salesforce Lightning Design System and by writing custom Lightning Components in Java Script within the Aura framework.
- Solid experience of Lightning component development and Salesforce customization.
- Convert business requirements into well-architected solutions that best leverage the Salesforce.com platform. Develop the technical Design, custom solution and system design based on lightning platform
- Minimum of 6 months Lightning Component development experience.
- Minimum of 6 months experience with Salesforce platform programming languages – Apex, Visualforce, Lightning Component framework.
- Minimum of 6 months experience with Lightning Design System framework.
- JavaScript, Remote Objects or JavaScript Remoting/events, JQuery, CSS
- Salesforce Static Resources Setup and usage of lightning apps and embedding in VF pages.
- Implementing REST integration (Salesforce.com web services API, REST API, JSON, Apex, HTML)
- Being a Certified Force.com Developer is a must, an Advanced Developer is highly desirable
- Strong knowledge of Agile methodology
- Proficiency in Apex, Visualforce, Web Services, SOQL, AJAX, XML, Javascript, HTML
- Experience in SFDC customization, integration and administration
- The ability to lead workshops and provide direction to your team members
- Excellent communication and presentation skills
• Developing new user-facing features using React.js
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers
Skills - Must have
• Expertise in React JS ecosystem and ES6
• Ability to design and architect Enterprise JavaScript applications using React JS
• Well-versed with web mark up (HTML5 and CSS3), JSX, and templating technologies
• Good understanding of responsive and adaptive development
• Understanding of cross browser development and making sure application works seamlessly in different
browsers
• Experience in writing unit tests using JavaScript testing frameworks
• Demonstrated understanding of asynchronous request handling, partial page updates, and AJAX
• Ability to review specifications documents and provide technical inputs on successfully implementing
business solutions
• Ability to work independently as well as in a team and lead a project to completion
• Self-motivated with outstanding interpersonal skills, strong work ethic, and excellent communication and
presentation skills
• Experience in popular React.js workflows (such as Redux or MobX)
• Experience in common front-end development tools such as Babel, Webpack, and NPM among others









