Website sales job- Telecaller required in kolkata

Senior Full Stack Developer

Location: India, Remote

Employment Type: Contract

Department: Engineering

About Us

OpenAssets is building open standards for the next generation of capital markets, providing the trusted foundation for real-world asset tokenization and digital currencies.

We design regulatory-conscious solutions for alternative asset digitization and loyalty programs, enabling organizations to create secure, scalable digital assets and personalized engagement experiences.

Join OpenAssets and help shape the future of digital finance!

Overview

OpenAssets is seeking a Senior Full-Stack Developer to own end-to-end delivery across our multi-tenant platform. This is a hands-on engineering role spanning the full MERN stack: MongoDB schemas, Node.js services, and React.js operator and investor interfaces with working knowledge of EVM-based blockchain systems to support on-chain integrations.

The ideal candidate brings deep experience designing and shipping production systems end-to-end, optimizing backend and frontend performance, integrating with EVM blockchains, and mentoring engineers in a distributed, fast-moving environment.

What You'll Do

• Design, develop, and maintain full-stack web applications across the MERN stack: MongoDB, Express.js, React.js, and Node.js using TypeScript on both client and server
• Build and maintain RESTful APIs with consistent error handling, pagination, versioning, and authentication
• Model, index, and optimize MongoDB schemas using compound indexes, aggregation pipelines, and transactions on replica sets
• Develop responsive React.js user interfaces using modern patterns including hooks, state management, and component-level testing
• Implement authentication and authorization using JWT and role-based access control with secure middleware patterns and OWASP-aligned input validation
• Integrate with EVM-based blockchain systems (Ethereum, Polygon, Arbitrum, Base), including wallet interactions, transaction lifecycle handling, and on-chain/off-chain reconciliation
• Deploy and operate services on AWS using Docker and CI/CD pipelines, with structured logging, monitoring, and on-call participation
• Write automated tests (unit, integration, end-to-end) using Jest, Mocha, Supertest, or similar frameworks
• Conduct code reviews, mentor mid-level engineers, and contribute to engineering documentation and best practices
• Collaborate with product, design, and engineering leadership across time zones to scope features, define API contracts, and deliver end-to-end

Qualifications & Experience

• 8+ years of full-stack development experience
• Strong expertise in MongoDB, Express.js, React.js, Node.js, and TypeScript across both client and server
• Experience designing and operating RESTful APIs and frontend integrations at scale
• Hands-on experience with MongoDB data modeling, compound indexes, aggregation pipelines, and replica-set transactions
• Proficiency in:
• JWT/OAuth-based authentication and role-based access control
• Secure middleware patterns and OWASP-aligned input validation
• Pagination, query optimization, and performance tuning
• Experience integrating with EVM-based blockchain systems (Ethereum, Polygon, Arbitrum, Base), including wallet interactions, transaction lifecycle handling, and on-chain/off-chain reconciliation
• Hands-on experience with AWS infrastructure (EC2, ECS, Lambda, S3, CloudWatch, IAM)
• Familiarity with Docker, GitHub Actions, and modern CI/CD workflows
• Experience writing automated tests across unit, integration, and end-to-end layers using Jest, Mocha, Supertest, Playwright, or Cypress
• Solid understanding of backend and frontend security practices
• Strong ownership mindset and accountability
• Ability to drive technical execution independently and mentor mid-level engineers
• English fluency

Nice to Have

• Fintech, capital markets, or payments experience 
• MongoDB Atlas certification or replica-set tuning expertise
• EVM developer tooling (ethers.js, Hardhat, Foundry)
• Tokenized securities or on-chain asset issuance
• Multi-tenant SaaS architecture
• Event-driven systems (Kafka, SQS, BullMQ)
• GraphQL
• Performance engineering (keyset pagination, caching, Redis) 
• Distributed tracing (OpenTelemetry)
• Infrastructure as code (Terraform, Pulumi, CDK)
• Open-source contributions or technical writing
• CS-related Bachelor's degree
• AWS certifications
• Prior remote-first startup experience.

We are committed to providing equal opportunity for qualified applicants to contract positions, regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status. This is a contract opportunity, not a direct employment role.

We are seeking an experienced MERN Stack Trainer with a strong passion for teaching and hands-on industry exposure. The ideal candidate will have a minimum of 2 years of training experience and deep expertise in JavaScript, React.js, Node.js, and MySQL, with the ability to train learners through real-world projects and practical assignments.

Require solid understanding of:

• RESTful APIs
• MVC / modular architecture
• Authentication & authorization (JWT, sessions)
• Git and version control workflows

Strong State / Regional Business Leadership Profile (Solar / Energy D2C)

Mandatory (Experience 1): Must have 8+ years of experience in business development, with strong D2C exposure

Mandatory (Experience 2): Must have experience managing multi-branch or district-level operations with ownership of revenue growth and execution

Mandatory (D2C Exposure): Must have at least 2 years of experience in D2C sales industry, candidates purely from EPC, project-only or channel-only roles should be avoided

Mandatory (Business Ownership): Must have exposure to branch-level revenue ownership, P&L and market expansion responsibilities

Mandatory (Knowledge): Understanding of PM Surya Ghar Yojana, subsidy mechanisms, and DISCOM regulations

Mandatory (Language): Fluency in Odiya is mandatory

Mandatory (Location): Candidate must be comfortable operating from Balangir, Sambalpur, Jharsuguda, or anywhere in Western Odisha

Mandatory (Company): D2C product companies

Mandatory (Note): This role will be an equal mix of IC and team management responsibilities

We are looking for a highly skilled Backend Developer with expertise in Core Java, Java 8, and Data Structures. The ideal candidate should have experience in Spring Boot, JPA/Hibernate, and Microservices architecture. If you are passionate about backend development and want to work in a dynamic environment, we’d love to hear from you!

Key Responsibilities:

• Develop and maintain backend applications using Core Java and Java 8.
• Design and implement RESTful and SOAP web services.
• Work with Spring Framework, Spring Boot, and JPA/Hibernate for backend development.
• Build and optimize microservices-based architectures.
• Manage databases such as PostgreSQL, MySQL, or Oracle.
• Collaborate with cross-functional teams to deliver high-quality software solutions.
• Write clean, efficient, and scalable code while following best practices.
• 
  

Requirements:

✅ Strong hands-on experience in Java (Core Java, Java 8) and Data Structures.

✅ Proficiency in Spring, Spring Boot, JPA/Hibernate.

✅ Experience in developing and consuming RESTful & SOAP APIs.

✅ Knowledge of Microservices architecture and best practices.

✅ Database expertise in PostgreSQL, MySQL, or Oracle.

✅ Excellent verbal and written communication skills.

Nice to Have:

• Experience with Docker/Kubernetes.
• Knowledge of CI/CD pipelines and DevOps practices.
• Exposure to cloud platforms (AWS, GCP, or Azure).

About Us

Divami Design Labs is ranked as the #1 UX UI Design Agency in India on "Clutch.co". We have worked with 200+ clients across the globe and touched more than 50M+ people. We have been recently honored with the Web Excellence Award and the CII Design Excellence Award for our platform designs. With a passion for creating user experiences, we get our high by solving complex problems and hearing you utter 'WOW,' especially across verticals like Data Integration, FinTech, HealthTech, EduTech, HRMS, DevOps, Transportation, Supply Chain, Logistics, Travel, IoT, AR/VR, AI/ML, BPM/RPA, Low Code No Code platforms and more.

About This Role

We are looking for a dynamic architect-level MERN/MEAN Stack developer with leadership skills to motivate, inspire, bring the best out of the team and at the same time individually contribute himself/herself towards project delivery. 

 If you are :

• A tech enthusiast, if the opportunity to run a project excites you, 
• Revels in supportive work culture and
• Looking for an opportunity of working on multiple projects excites you then

THIS IS the job for YOU !!

Roles And Responsibilities

• 5 years of hands-on experience in working with MERN / MEANstack
• At Least 3 years of experience in leading a team size of minimum 3-4 members
• Excellent communication, client handling and crisis management skills
• Great debugging and problem-solving skills

Location

Gachibowli, Hyderabad

Our client has a B2C startup in the Fintech space building the payment system for the

subscription economy. We have raised pre-seed funding from some of the leading

investors in the country. A small brief about their product - To build the payment

system for the subscription economy and make it easier to discover and manage

subscription payments in India and abroad. To give subscription merchants the

power to increase their offering by providing user subscription data, multiple login

authentication, distribution and one click subscription checkouts. To enable users to

participate in the subscription economy & increase adoption of new subscriptions.

The core team come from strong backgrounds having been alumni of IIT Madras,

IIM Calcutta as well as having worked with some of the top startups in the

ecosystem including Swiggy, Mckinsey, Barclays, etc..

What we're looking for

We are looking for an experienced Python developer to join our engineering team

and help us develop our mobile application. In this role, you will be responsible for

writing and testing scalable code, developing back-end components, and integrating

user-facing elements in collaboration with front-end developers.

To be successful as a Python developer, you should possess in-depth knowledge of

object-relational mapping, experience with server-side logic, and above-average

knowledge of Python programming.

As one of the earliest members in engineering, you will have the flexibility to design

the application and systems from ground up. As any early-stage start-up, we expect

you to be comfortable wearing various hats, and be proactive contributor in building

something truly remarkable.

Responsibilities

Coordinating with development teams to determine application requirements.Python Backend Developer

2

Writing scalable code using Python programming language.

Developing back-end components.

Implement business logic in the backend

Integrating user-facing elements using server-side logic.

Create restful APIs for a seamless integration with our mobile front end

Testing and debugging applications.

Assessing and prioritizing client feature requests.

Integrating data storage solutions.

Coordinating with front-end developers.

Reprogramming existing databases to improve functionality.

Developing digital tools to monitor online traffic.

Qualifications

4+ years of experience in Python, Django, Mongo, Express, MySQL, etc

Have built applications capable of serving high volume with low latency in

production

Following practices of agile development with continuous integration/deployment

A deep understanding and multi-process architecture and the threading

limitations of Python.

Experience in deploying applications in AWS cloud

Ability to collaborate on projects and work independently when required.

Knowledge in building applications for Fintech/payments domain is a bonus

Bachelor's or Master's degree in CS or equivalent from a reputed institution

1. Create Exclusive Distributors (minimum 4 in 4 months) in your respective areas of operation

1. To work directly with the distributor and the sales executives in designing and implementing key marketing campaigns.

1. To actively engage yourself to collect inventory, stocks and work reports of the distributor in a

daily/weekly basis.

1. To look after smooth functioning and supply chain of the authorized distributor under your

periphery.

1. To oversee sales executive schedule and plan them accordingly.

1. To facilitate cross-functional communications among project stakeholders.

1. To actively engage yourself with core marketing policies required for business development.

1. To look after the grievances and claims arising from time to time maintaining proper

coordination with the company.

1. To actively follow other marketing strategies and instructions as and when instructed by the company.