NodeJS (Node.js)
MongoDB
RustContext for the Candidates:
Blockchain engineers are tasked with building secure, scalable, and high-performance decentralized applications. This discussion focuses on how to utilize key technologies—Node.js, Rust, Go, TypeScript, Ethers.js, viem, and Hardhat—in smart contract and blockchain system development, while addressing the practical challenges that arise in such projects.
Key Discussion Points:
• How do you integrate Node.js, Rust, Go, and TypeScript in blockchain-backed applications?
• Discuss the trade-offs between using Rust or Go for performance-critical blockchain services.
• What are the key challenges in ensuring the security and scalability of smart contracts using tools like Ethers.js, viem, and Hardhat?
• How do you approach testing, debugging, and deploying smart contracts in a decentralized environment?
• Share best practices for gas optimization, contract upgradability, and backend scalability.
Evaluation Criteria:
1. Technical Knowledge:
• Strong knowledge of Node.js, Rust, Go, and TypeScript with practical experience in blockchain development.
• Proficiency in Ethers.js, viem, Hardhat, and smart contract lifecycle (development, testing, deployment).
• Understanding of security best practices, performance optimizations, and scalability in decentralized systems.
2. Problem-Solving and Integration Skills:
• How candidates approach integrating smart contract solutions with backend services using Node.js, Rust, Go, and TypeScript.
• Solutions proposed for common challenges in blockchain projects such as gas fees, security vulnerabilities, and system bottlenecks.
3. Experience and Expertise:
• Minimum of 2 years of IT experience, including hands-on development with the specified technologies.
• Practical knowledge of blockchain architecture, consensus mechanisms, and decentralized application deployment.
4. Innovation and Critical Thinking:
• Candidates’ ability to think creatively about system architecture, proposing scalable and secure solutions for blockchain-based applications.
• Discussion on the future potential of blockchain technology and how the tech stack can evolve.
5. Communication and Team Collaboration:
• Clear articulation of technical challenges and how to address them in a team setting.
• Ability to lead or contribute to discussions in a way that encourages collaboration and team-driven problem-solving.
Shubham Vishwakarma
Full Stack Developer - Averlon
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Flask
DjangoPython Software Engineer (3–5 Years Experience)
Location: [Pune]
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We are seeking skilled Python engineers to join our core product team. You will work on backend services, API development, and system integrations, contributing to a codebase of over 250,000 Python lines and collaborating with frontend, DevOps, and native code teams.
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· Design, develop, and maintain scalable Python backend services and APIs
· Optimize performance and reliability of large, distributed systems
· Collaborate with frontend (JS/HTML/CSS) and native (C/C++/C#) teams
· Write unit/integration tests and participate in code reviews
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· 3–5 years of professional Python development experience
· Strong understanding of OOP, design patterns, and modular code structure
· Experience with MongoDB (PyMongo), Mako, RESTful APIs, and asynchronous programming
· Familiarity with code quality tools (flake8, pylint) and test frameworks (pytest, unittest)
· Experience with Git and collaborative development workflows
· Ability to read and refactor large, multi-module codebases
Nice to Have
· Experience with web frameworks (web.py, Flask, Django)
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· Familiarity with CI/CD, Docker, and cloud deployment
· Exposure to security, encryption, or enterprise SaaS products
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· Opportunity to work on a mission-critical, enterprise-scale product
· Collaborative, growth-oriented engineering culture
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NodeJS (Node.js)MongoDB
ExpressBACKEND DEVELOPER JOB DESCRIPTION
Job Title: Backend Developer - Node.js & MongoDB
Location: Hyderabad
Employment Type: Full-Time
Experience Required: 3–5 Years
About Us
Inncircles – THE INNGINEERING COMPANY
We are a forward-thinking construction-tech innovator building CRM solutions that manage crores of records with precision and speed. Our mission is to revolutionize the construction domain through scalable engineering and robust backend systems. Join us to solve complex challenges and shape the future of data-driven construction tech!
Job Description
We are hiring a Backend Developer with 3–5 years of hands-on experience in Node.js and MongoDB to design, optimize, and maintain high-performance backend systems. You will work on large-scale data processing, external integrations, and scalable architectures while ensuring best coding practices and efficient database design.
Key Responsibilities
Backend Development & Optimization
- Develop and maintain RESTful/GraphQL APIs using Node.js, adhering to best coding practices and reusable code structures.
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- Design MongoDB collections, implement indexing strategies, and optimize replica sets for performance and reliability.
- Scalability & Performance
- Implement horizontal and vertical scaling strategies to handle growing data and traffic.
- Optimize database performance through indexing, aggregation pipelines, and query tuning.
- External Integrations & Debugging
- Integrate third-party APIs (payment gateways, analytics tools, etc.) and SDKs seamlessly into backend systems.
- Debug and resolve complex issues in production environments with a systematic, data-driven approach.
AWS & Cloud Services
Work with AWS services like Lambda (serverless), SQS (message queuing), S3 (storage), and EC2 (compute) to build resilient and scalable solutions.
Collaboration & Best Practices
Collaborate with frontend teams to ensure smooth API integrations and data flow.
Document code, write unit/integration tests, and enforce coding standards.
Mandatory Requirements
3–5 years of professional experience in Node.js and MongoDB.
Expertise in:
- MongoDB: Collection design, indexing, aggregation pipelines, replica sets, and sharding.
- Node.js: Asynchronous programming, middleware, and API development (Express.js/Fastify).
- Query Optimization: Writing efficient queries for large datasets (crores of records).
- Strong debugging skills and experience in resolving production issues.
- Hands-on experience with external integrations (APIs, SDKs, webhooks).
- Knowledge of horizontal/vertical scaling techniques and performance tuning.
- Familiarity with AWS services (Lambda, SQS, S3, EC2).
Preferred Skills
- Experience with microservices architecture.
- Knowledge of CI/CD pipelines (GitLab CI, Jenkins).
- Understanding of Docker, Kubernetes, or serverless frameworks.
- Exposure to monitoring tools like Prometheus, Grafana, or New Relic.
Why Join Inncircles?
Solve large-scale data challenges in the construction domain.
Work on cutting-edge cloud-native backend systems.
Competitive salary, flexible work culture, and growth opportunities.
Apply Now:
If you’re passionate about building scalable backend systems and thrive in a data-heavy environment, share your resume and a GitHub/portfolio link showcasing projects with Node.js, MongoDB, and AWS integrations.
Inncircles – THE INNGINEERING COMPANY
📍 Hyderabad | 🚀 Building Tomorrow’s Tech Today
Ruby
Ruby on Rails (ROR)
JavascriptWe seek a highly skilled and experienced Ruby on Rails Development Team Lead/Architect to join our dynamic team at Uphance. The ideal candidate will have proven expertise in leading and architecting RoR projects, focusing on building scalable, high-quality applications. This role requires a combination of technical leadership, mentorship, and a strong commitment to best practices in software development.
Job Type: Contract/Remote/Full-Time/Long-term
Responsibilities:
- Develop and maintain high-quality Ruby on Rails applications that meet our high-quality standards.
- Design, build, and maintain efficient, reusable, and reliable Ruby code.
- Utilise your expertise in Ruby on Rails to enhance the performance and reliability of our platform.
- Set the technical direction for the existing RoR project, including system architecture and technology stack decisions.
- Guide and mentor team members to enhance their technical skills and understanding of RoR best practices.
- Conduct code reviews to maintain high coding standards and ensure adherence to best practices.
- Optimise application performance, focusing on ActiveRecord queries and overall architecture.
- Tackle complex technical challenges and provide efficient solutions, particularly when specifications are unclear or incomplete.
- Establish and enforce testing protocols; write and guide the team in writing effective tests.
- Define and ensure consistent adherence to best practices, particularly in the context of large applications.
- Manage the development process using Agile methodologies, possibly acting as a Scrum Master if required.
- Work closely with product managers, designers, and other stakeholders to meet project requirements and timelines.
Technical Requirements and Qualifications:
- Bachelor's or Master's degree in Computer Science, Engineering, or a related field
- Proven experience with Ruby on Rails, MySQL, HTML, and JavaScript (6+ years)
- Extensive experience with Ruby on Rails and familiarity with its best practices
- Proven track record of technical leadership and team management
- Strong problem-solving skills and the ability to address issues with incomplete specifications
- Proficiency in performance optimisation and software testing
- Experience with Agile development and Scrum practices
- Excellent mentoring and communication skills
- Experience with large-scale application development
- Application performance monitoring/tuning
General Requirements:
- Availability to work during the IST working hours.
- High-speed Internet and the ability to join technical video meetings during business hours.
- Strong analytical and problem-solving skills and ability to work as part of multi-functional teams.
- Ability to collaborate and be a team player.
Why Uphance?
- Engage in Innovative Projects: Immerse yourself in cutting-edge projects that not only test your skills but also encourage the exploration of new design realms.
- AI-Integrated Challenges: Take on projects infused with AI, pushing the boundaries of your abilities and allowing for exploration in uncharted territories of software design and development.
- Flexible Work Environment: Whether you embrace the digital nomad lifestyle or prefer the comfort of your own space, Uphance provides the freedom to design and create from any corner of the globe.
- Inclusive Team Environment: Join a dynamic, international, and inclusive team that values and celebrates diverse ideas.
- Collaborative Team Dynamics: Become a part of a supportive and motivated team that shares in the celebration of collective successes.
- Recognition and Appreciation: Your accomplishments will be acknowledged and applauded regularly in our Recognition Rally.
Compensation:
Salary Range: INR 24 LPA to INR 32 LPA (Salary is not a constraint for the right candidate)
At Uphance, we value innovation, collaboration, and continuous learning. As part of our team, you'll have the opportunity to lead a group of talented RoR developers, contribute to exciting projects, and play a key role in our company's success. If you are passionate about Ruby on Rails and thrive in a leadership role, we would love to hear from you. Apply today and follow us on LinkedIn - https://www.linkedin.com/company/uphance !
NodeJS (Node.js)
NodeJS (Node.js)MongoDBExpressJavascriptDB Design and Development.
Developing and Designing in Node.js, HTML5, CSS3, MySQL.
The developer will review requirements and design documents to produce estimates and task lists based on those requirements.
Applying SDLC principles when working with or leading a team of developers.
Needs to create mobile and web applications
Responsible for the creation and implementation of a wide variety of mobile and Web-based
Products using Node.js, JavaScript, MySQL, and AJAX.
Troubleshoot, test, and maintain the core product software and databases to ensure strong
optimization and functionality
KNOWLEDGE AND EXPERIENCE
Good Knowledge in Developing Applications using CMS.
Should have knowledge of angularJS
Integrating Payment Gateways, Facebook APIs, Secure login (with social networking accounts).
Experience in developing Web applications using OOPS with Node.js, MySQL, HTML5, JQuery, and Ajax.
Good knowledge of front end technologies such as HTML, CSS, query
NodeJS (Node.js)MongoDBExpressJavascriptBachelor's or Master's degree in Computer Science, Information Systems,
or equivalent.
EXPERIENCE – 2 to 5 years
CTC - UPTO 5.4L P.A.
JOB DESCRIPTION
We are looking for a backend developer who will be responsible for designing,
implementing, and supporting a distributed blockchain-based network. Your primary
responsibility will be analysing requirements, designing Blockchain technology around
a certain business model, and the building and launching of a blockchain network. You
will be asked to work on various blockchain technologies like Ethereum (Layer 1 & 2,
i.e Binance Smart Chain ).
● Analytical, results-driven Back-end Developer who will work with team members
to troubleshoot and improve current back-end applications and processes.
Focused on building a better, more efficient program and creating a better
end-user experience.
● Work closely with Frontend developers to integrate new web features into
our application
● Strong understanding of the web development cycle and programming
techniques and tools.
● Strong communication and presentation skills
● Ability to work in a fast-paced environment.
SKILLSET
● Experience with Smart contract development tools
● Strong background in Javascript, Python & Node JS, SQL
● Build new features and products using modern backend tools (Node.js, Mongo,
SQL, GraphQL)
● Hands-on technical exposure in implementing Blockchain technologies
(Ethereum and Hyperledger Familiarity with Hyperledger Fabric and Solidity )
Understanding of Distributed Ledger technology, Blockchain ecosystem and
structure.
● Experience working in an Agile and DevOps environment.
● Knowledge on Mining, Hashing, Elliptic Curve Cryptography(ECC) and P2P
networking Extensive experience with progression of major projects from the
planning stage through to implementation and completion Effective
communicator to all stakeholders and management during project consulting
and analysis. Strong Software development background.
● Experience on Smart contract and Solidity, development tools for Ethereum
(testrpc, geth, Web3, eth_lightwallet, etc.
● Experience in writing smart contracts.
● Good understanding of NFTs and tokens.
● Experience in wallet integration like MetaMask and Coinbase Wallet.
Experience working with decentralized application protocols like DeFi..
Working knowledge of at least one of the Blockchain frameworks such
as Hyperledger Fabric, R3 Corda, Ethereum (Solidity).
● Experience working with large code-bases.
● Proficiency in one or more of the following languages: C++, Go, Solidity,
Rust, Node.js, React.js.
● Strong knowledge of Algorithms and Data Structures.
● Familiarity with Cryptography.
● Familiarity with P2P networks
● Strong knowledge of bitcoin-like blockchains.
● Strong knowledge of concurrency and writing efficient and safe multithreaded
code
● Familiarity with code versioning tools such as Git
NodeJS (Node.js)JavascriptMongoDBExpressWork remotely / Work From Home with BigStep Technologies throughout your tenure.
Desired candidates must have 3-6 years experience as NodeJs Developer.
Roles and responsibilities:
- Responsible for understanding functional and business requirements and translate them into effective code
- Provide support till deployment of code into production.
- Ownership for ensuring code optimization, problem diagnosis, and on-time delivery
- Implement solutions as per the pre-defined framework /guidelines and adherence to processes
- Finding an optimal solution for the problem statement
- Conduct peer code review.
Skills:
- Excellent hands-on experience with Node.Js, Express.Js, JavaScript
- Understanding the nature of asynchronous programming and its quirks and workarounds
- Excellent hands-on experience with MongoDB, Mongo aggregation, MySQL
- Ability to build REST services, Authentications, MVC applications
- Excellent Object Oriented Programming skills and ability to write modular, secure, scalable, and maintainable code
- Experience with Elastic Search, Redis.
- Knowledge about AWS components (S3, EC2, Cloudfront, Redis Clusters, etc.)
- Self-learning abilities are required
- Familiarity with upcoming new technologies is a strong plus
NodeJS (Node.js)PythonJavascriptMongoDBExpress
NodeJS (Node.js)JavascriptMongoDBExpress
Amazon Web Services (AWS)• 3+ years of hands-on software engineering experience in Node.js and Typescript (including
Express, Feathers.js or similar)
• Proficient at programming and interacting with APIs
• Strong understanding of production systems, especially in AWS
• Deep understanding of mobile backend infrastructure including service-oriented or microservice architecture
• Customer-focused, reacts well to changes, work with teams and able to multitask
• Must be a self-starter who can work well with minimal guidance and in fluid environment
Bonus if you have the following:
• Experience in React and/or React Native
• Active contributor to developer communities like Stackoverflow, Topcoder, Github etc.
• Worked with Linux
• Prior startup experience
JavascriptPython
PHPRuby on Rails (ROR)
Follow CutshortShubham Vishwakarma
Full Stack Developer - Averlon